I have a Editable GridView that I'm attempting to add sorting functionalty to specified columns. Though I receive no errors, My sorting method does not work. Could I please get some help on what I'm missing here?
The Design:
<asp:GridView ID="gvLogNotice"
runat="server"
AutoGenerateColumns="false"
ShowFooter="false"
OnRowCancelingEdit="gvLogNotice_RowCancelingEdit"
OnRowEditing="gvLogNotice_RowEditing"
OnRowUpdating="gvLogNotice_RowUpdating"
EmptyDataText="There are no data records to display."
DataKeyNames="LogNoticeID"
AllowPaging="true"
AllowSorting="true"
OnSorting="gvLogNotice_sorting"
Width="700px">
<Columns>
<asp:TemplateField HeaderText="Log No." Visible="false">
<ItemTemplate>
<%#Eval("LogNoticeID")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtLogNoticeID" runat="server" Enabled="false" Text=' <%#Eval("LogNoticeID") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Log Date" SortExpression="DateLogged">
<ItemTemplate>
<%#Eval("DateLogged")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtDateLogged" runat="server" Text=' <%#Eval("DateLogged") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Log Description" HeaderStyle-Width="50px" sortexpression="LogNoticeDescript">
<ItemTemplate>
<%#Eval("LogNoticeDescript")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtLogNoticeDescript" runat="server" Text=' <%#Eval("LogNoticeDescript") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Responsible Party" sortexpression="ResponsibleParty">
<ItemTemplate>
<%#Eval("ResponsibleParty")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtResponsibleParty" runat="server" Text=' <%#Eval("ResponsibleParty") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Planned Date" SortExpression="PlannedDate" >
<ItemTemplate>
<%#Eval("PlannedDate")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtPlannedDate" runat="server" Text=' <%#Eval("PlannedDate") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Case Number" SortExpression="CaseNumber">
<ItemTemplate>
<%#Eval("CaseNumber")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtCaseNumber" runat="server" Text=' <%#Eval("CaseNumber") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Log Status" SortExpression="LogStatus">
<ItemTemplate>
<%#Eval("LogStatus")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtLogStatus" runat="server" Text=' <%#Eval("LogStatus") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Edit">
<ItemTemplate>
<asp:ImageButton ID="ImageButton1" runat="server" ImageUrl="images/edit.png" Width="25"
Height="25" CommandName="Edit" />
<%-- <asp:ImageButton ID="ImageButton2" runat="server" ImageUrl="~/img/delete.png" CommandName="Delete"
OnClientClick="return confirm('Are you sure want to delete record?')" />--%>
</ItemTemplate>
<EditItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CommandName="Update">Update</asp:LinkButton>
<asp:LinkButton ID="LinkButton2" runat="server" CommandName="Cancel">Cancel</asp:LinkButton>
</EditItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Code behind:
//Page Load Event:
protected void Page_Load(object sender, EventArgs e)
{
lblmsg.Text = "";
if (!Page.IsPostBack)
{
gvLogNotice.ShowFooter = false;
//Load grid data using common method
LoadGrid();
}
}
//bind data to GV and Load
void LoadGrid()
{
sqlcmd = new SqlCommand("selectActiveLogs", sqlcon);
sqlcmd.CommandType = CommandType.StoredProcedure;
try
{
sqlcon.Open();
da = new SqlDataAdapter(sqlcmd);
dt.Clear();
da.Fill(dt);
gvLogNotice.DataSource = dt;
gvLogNotice.DataBind();
}
catch (Exception ex)
{
}
finally
{
sqlcon.Close();
}
}
//sorting event
protected void gvLogNotice_sorting(object sender, GridViewSortEventArgs e)
{
switch (e.SortExpression)
{
case "DateLogged":
if (e.SortDirection == SortDirection.Ascending)
{
LoadGrid();
}
else
{
LoadGrid();
}
break;
}
}
The SortDirection property on the GridView is changed only when the GridView is bound to a DataSource control using the DataSourceID property. Otherwise, sort direction needs to be managed manually.
In this case when we provide Data to gridView using its DataSource property , e.SortDirection will always return Ascending. And therefore only your IF statement will always get executed.
Second Point:: You need to optimize actually is just make sure you define a function to return the Data only. e.g say LoadGrid() only returns the DataTable. This way you don't need to define overloads of your LoadGrid() method. Morover, with a proper way of implementation, overloading is really not needed at all.
Third point:: is that you aren't applying sorting at all, but just loading the GridView.When you databind manually by setting the DataSource property and calling DataBind(), you need to handle the sort operation manually.
So, start by storing your sortDirection in ViewState. Simply define a public property to Get/Set the same. [ NOTE we need to store the sortDirection value according to point 1 above ]
public SortDirection SortDirection
{
get {
if (ViewState["SortDirection"] == null)
{
ViewState["SortDirection"] = SortDirection.Ascending;
}
return (SortDirection)ViewState["SortDirection"];
}
set
{
ViewState["SortDirection"] = value;
}
}
In your OnSorting event, Set the sortDirection as well as firstly sort the table and then load it into gridView.
protected void SortRecords(object sender, GridViewSortEventArgs e)
{
string sortExpression = e.SortExpression;
string direction = string.Empty;
if (SortDirection == SortDirection.Ascending)
{
SortDirection = SortDirection.Descending;
direction = " DESC";
}
else
{
SortDirection = SortDirection.Ascending;
direction = " ASC";
}
DataTable table = this.LoadGrid(); // or this.GetDataTable(), to get only the DataTable
// Now apply Sorting to your source of Data
table.DefaultView.Sort = sortExpression + direction;
// Bind the GridView
gvLogNotice.DataSource = table;
gvLogNotice.DataBind();
}
And last, your LoadGrid is fine, only thing that just fill the table and return it
private DataTable LoadGrid()
{
DataTable dt = new DataTable();
sqlcmd = new SqlCommand("selectActiveLogs", sqlcon);
sqlcmd.CommandType = CommandType.StoredProcedure;
try
{
sqlcon.Open();
da = new SqlDataAdapter(sqlcmd);
dt.Clear();
da.Fill(dt);
return dt;
}
catch (Exception ex)
{}
}
Related
I'm updating the row in a grid view as well as the DataTable using the Rowcommand event but an exception occurs while assigning the values to the row in the DataTable.
protected void grduser_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Update")
{
DataTable dt = (DataTable)ViewState["dtable"];
Int32 index = Convert.ToInt32(e.CommandArgument);
GridViewRow row = grduser.Rows[index];
// after this statement the exception occurs!
dt.Rows[row.DataItemIndex]["userid"] = ((TextBox)(row.Cells[0].Controls[0])).Text;
dt.Rows[row.DataItemIndex]["username"] = ((TextBox)(row.Cells[1].FindControl("txtuname"))).Text;
dt.Rows[row.DataItemIndex]["usertype"] = ((TextBox)(row.Cells[2].Controls[0])).Text;
dt.Rows[row.DataItemIndex]["email"] = ((TextBox)(row.Cells[3].Controls[0])).Text;
dt.Rows[row.DataItemIndex]["salary"] = ((TextBox)(row.Cells[4].FindControl("txtsalary"))).Text;
grduser.EditIndex = -1;
ViewState["dtable"]=dt;
grduser.DataSource = (DataTable)(ViewState["dtable"]);
grduser.DataBind();
}
}
// The grid view source below.
<asp:GridView ID="grduser" runat="server" AutoGenerateColumns="False"
onrowediting="grduser_RowEditing" onrowupdating="grduser_updateRow"
>
<Columns>
<asp:BoundField HeaderText="Id" DataField="userid"/>
<asp:TemplateField HeaderText="Name">
<EditItemTemplate>
<asp:TextBox ID="txtuname" runat="server" Text='<%# Bind("username") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("username") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField HeaderText="User Type" DataField="usertype" />
<asp:BoundField HeaderText="Email" DataField="email" />
<asp:TemplateField HeaderText="Salary">
<EditItemTemplate>
<asp:TextBox ID="txtsalary" runat="server" Text='<%# Bind("salary") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("salary") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
Could you try this.
protected void grduser_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Update")
{
DataTable dt = (DataTable)ViewState["dtable"];
Int32 index = Convert.ToInt32(e.CommandArgument);
GridViewRow row = grduser.Rows[index];
dt.Rows[row.DataItemIndex]["userid"] = row.Cells[0].Text;
dt.Rows[row.DataItemIndex]["username"] = ((TextBox)(row.FindControl("txtuname"))).Text;
dt.Rows[row.DataItemIndex]["usertype"] = row.Cells[2].Text;
dt.Rows[row.DataItemIndex]["email"] = row.Cells[3].Text;
dt.Rows[row.DataItemIndex]["salary"] = ((TextBox)(row.FindControl("txtsalary"))).Text;
grduser.EditIndex = -1;
ViewState["dtable"]=dt;
grduser.DataSource = (DataTable)(ViewState["dtable"]);
grduser.DataBind();
}
}
You are getting that error because your e.CommandArgument is not a valid row number from your GridView. For instance, your grduser has 3 rows and your e.CommandArgument is set to 3. This will throw a System.ArgumentOutOfRangeException because the grduser.Rows is 0-based and you are most likely setting it starting with 1.
I have the following database design:
Employee Table: Username, Name, JobTitle, BadgeNo, IsActive, DivisionCode
Divisions Table: SapCode, DivisionShortcut
And I have a GridView that I am using it to add, delete and update/edit the employees information. This information is employee Username, Name, BadgeNo, JobTitle, IsActive and the DivisionShortcut. IsActive is a flag that indicates if the employee is available or in an assignment. I made it as a checkbox and the column should show two values; Active and Inactive. In the Edit mode, the Checkbox will be displayed. If it is checked, then it means the employee is avaiable, otherwise it is inactive.
I wrote the code and everything works fine, but now I am facing only one problem which is the following: when the checkbox is unchecked that means the employee is inactive, so I want the row that shows his information to be in a grey color (like disabled).
So how to do that?
ASP.NET code:
<%-- GridView for User Management Subsystem --%>
<asp:GridView ID="GridView1" runat="server" AllowSorting="True"
AutoGenerateColumns="False" DataKeyNames="Username"
DataSourceID="SqlDataSource1" OnRowDataBound="GridView1_RowDataBound" BorderWidth="1px" BackColor="#DEBA84"
CellPadding="3" CellSpacing="2" BorderStyle="None"
BorderColor="#DEBA84">
<FooterStyle ForeColor="#8C4510"
BackColor="#F7DFB5"></FooterStyle>
<PagerStyle ForeColor="#8C4510"
HorizontalAlign="Center"></PagerStyle>
<HeaderStyle ForeColor="White" Font-Bold="True"
BackColor="#A55129"></HeaderStyle>
<Columns>
<asp:CommandField ButtonType="Image" ShowEditButton="true" ShowCancelButton="true"
EditImageUrl="Images/icons/edit24.png" UpdateImageUrl="Images/icons/update24.png"
CancelImageUrl="Images/icons/cancel324.png" />
<asp:TemplateField HeaderText="Division">
<ItemTemplate>
<%# Eval("DivisionShortcut")%>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList ID="DivisionsList" runat="server" DataSourceID="DivisionsListDataSource"
DataTextField="DivisionShortcut" DataValueField="SapCode"
SelectedValue='<%# Bind("DivisionCode")%>'>
</asp:DropDownList>
</EditItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Username" HeaderText="Network ID" ReadOnly="True"
SortExpression="Username" />
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<%# Eval("Name")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEmployeeName" runat="server" Text='<%# Bind("Name")%>' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Job Title">
<ItemTemplate>
<%# Eval("JobTitle")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtJobTitle" runat="server" Text='<%# Bind("JobTitle")%>' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Badge No.">
<ItemTemplate>
<%# Eval("BadgeNo")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtBadgeNo" runat="server" Text='<%# Bind("BadgeNo")%>' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Is Active?">
<ItemTemplate>
<asp:Label ID="lblIsActive" runat="server" Text='<%# Eval("IsActive")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:CheckBox ID="isActive" runat="server"
AutoPostBack="true" OnCheckedChanged="isActive_OnCheckedChanged"
Checked='<%# Convert.ToBoolean(Eval("IsActive")) %>'
Text='<%# Eval("IsActive")%>'/>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Delete?">
<ItemTemplate>
<span onclick="return confirm('Are you sure to Delete the record?')">
<asp:ImageButton ID="lnkB" runat="server" ImageUrl="Images/icons/delete24.png" CommandName="Delete" />
</span>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Code-behind:
//for updating the (IsActive) column using checkbox inside the GridView
protected void isActive_OnCheckedChanged(object sender, EventArgs e)
{
CheckBox chkStatus = (CheckBox)sender;
GridViewRow gvrow = (GridViewRow)chkStatus.NamingContainer;
//Get the ID which is the NetworkID of the employee
string username = gvrow.Cells[2].Text;
bool status = chkStatus.Checked;
string connString = ConfigurationManager.ConnectionStrings["UsersInfoDBConnectionString"].ConnectionString;
SqlConnection conn = new SqlConnection(connString);
string updateIsActive = "UPDATE Employee SET IsActive = #IsActive WHERE Username = #Username";
SqlCommand cmd = new SqlCommand(updateIsActive, conn);
cmd.Parameters.AddWithValue("#IsActive", status);
cmd.Parameters.AddWithValue("#Username", username);
try
{
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
}
catch (SqlException se)
{
throw se;
}
finally
{
cmd.Dispose();
conn.Close();
conn.Dispose();
}
}
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
// First check Checkedbox is check or not, In Cells insert you IsActive column index
if( e.Row.Cells[1].Text == "False" )
GridView1.BackColor = Color.Gray;
}
}
in your method on unchecked status of the checkbox you will have set the BackColor of the GrdiViewRow like this gvrow.BackColor= Color.Gray;
One important think is on the first load you will need to repeat similar logic of the GridView's OnRowDataBound so move it in method and reuse
protected void isActive_OnCheckedChanged(object sender, EventArgs e)
{
CheckBox chkStatus = (CheckBox)sender;
GridViewRow gvrow = (GridViewRow)chkStatus.NamingContainer;
//Get the ID which is the NetworkID of the employee
string username = gvrow.Cells[2].Text;
bool status = chkStatus.Checked;
if(!status)//this is checkbox is unchecked then set backcolor to Gray
{
gvrow .BackColor = Color.Gray;
}
.......
I have the following database design:
Employee Table: Username, Name, JobTitle, BadgeNo, IsActive, DivisionCode
Divisions Table: SapCode, DivisionShortcut
And I have a GridView that I am using it to add, delete and update/edit the employees information. This information is employee Username, Name, BadgeNo, JobTitle, IsActive and the DivisionShortcut. IsActive is a flag that indicates if the employee is available or in an assignment. I made it as a checkbox and the column should show two values; Active and Inactive. In the Edit mode, the Checkbox will be displayed. If it is checked, then it means the employee is avaiable, otherwise it is inactive.
I wrote the code and everything works fine, but now I am facing two problems and I don't know how to make them work with my code.
The GridView shows True or False instead of Active and Inactive and
I don't know why.
In the Edit mode, the checkbox will be displayed and the values (Active or Inactive) will be displayed besides to it and it shouldn't be displayed. I just want the checkbox to be displayed.
So how to modify them?
ASP.NET code:
<%-- GridView for User Management Subsystem --%>
<asp:GridView ID="GridView1" runat="server" AllowSorting="True"
AutoGenerateColumns="False" DataKeyNames="Username"
DataSourceID="SqlDataSource1" BorderWidth="1px" BackColor="#DEBA84"
CellPadding="3" CellSpacing="2" BorderStyle="None"
BorderColor="#DEBA84">
<FooterStyle ForeColor="#8C4510"
BackColor="#F7DFB5"></FooterStyle>
<PagerStyle ForeColor="#8C4510"
HorizontalAlign="Center"></PagerStyle>
<HeaderStyle ForeColor="White" Font-Bold="True"
BackColor="#A55129"></HeaderStyle>
<Columns>
<asp:CommandField ButtonType="Image" ShowEditButton="true" ShowCancelButton="true"
EditImageUrl="Images/icons/edit24.png" UpdateImageUrl="Images/icons/update24.png"
CancelImageUrl="Images/icons/cancel324.png" />
<asp:TemplateField HeaderText="Division">
<ItemTemplate>
<%# Eval("DivisionShortcut")%>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList ID="DivisionsList" runat="server" DataSourceID="DivisionsListDataSource"
DataTextField="DivisionShortcut" DataValueField="SapCode"
SelectedValue='<%# Bind("DivisionCode")%>'>
</asp:DropDownList>
</EditItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Username" HeaderText="Network ID" ReadOnly="True"
SortExpression="Username" />
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<%# Eval("Name")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEmployeeName" runat="server" Text='<%# Bind("Name")%>' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Job Title">
<ItemTemplate>
<%# Eval("JobTitle")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtJobTitle" runat="server" Text='<%# Bind("JobTitle")%>' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Badge No.">
<ItemTemplate>
<%# Eval("BadgeNo")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtBadgeNo" runat="server" Text='<%# Bind("BadgeNo")%>' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Is Active?">
<ItemTemplate>
<%# Eval("IsActive")%>
</ItemTemplate>
<EditItemTemplate>
<asp:CheckBox ID="isActive" runat="server"
AutoPostBack="true" OnCheckedChanged="isActive_OnCheckedChanged"
Checked='<%# Convert.ToBoolean(Eval("IsActive")) %>'
Text='<%# Eval("IsActive").ToString().Equals("True") ? " Active " : " Inactive " %>'/>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Delete?">
<ItemTemplate>
<span onclick="return confirm('Are you sure to Delete the record?')">
<asp:ImageButton ID="lnkB" runat="server" ImageUrl="Images/icons/delete24.png" CommandName="Delete" />
</span>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Code-behind:
//for updating the (IsActive) column using checkbox inside the GridView
protected void isActive_OnCheckedChanged(object sender, EventArgs e)
{
CheckBox chkStatus = (CheckBox)sender;
GridViewRow gvrow = (GridViewRow)chkStatus.NamingContainer;
//Get the ID which is the NetworkID of the employee
string username = gvrow.Cells[2].Text;
bool status = chkStatus.Checked;
string connString = ConfigurationManager.ConnectionStrings["UsersInfoDBConnectionString"].ConnectionString;
SqlConnection conn = new SqlConnection(connString);
string updateIsActive = "UPDATE Employee SET IsActive = #IsActive WHERE Username = #Username";
SqlCommand cmd = new SqlCommand(updateIsActive, conn);
cmd.Parameters.AddWithValue("#IsActive", status);
cmd.Parameters.AddWithValue("#Username", username);
try
{
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
}
catch (SqlException se)
{
throw se;
}
finally
{
cmd.Dispose();
conn.Close();
conn.Dispose();
}
}
UPDATE:
I update my code as following:
ASP.NET Code:
<asp:GridView ID="GridView1" runat="server" AllowSorting="True"
AutoGenerateColumns="False" DataKeyNames="Username"
DataSourceID="SqlDataSource1" OnRowDataBound="GridView1_RowDataBound" BorderWidth="1px" BackColor="#DEBA84"
CellPadding="3" CellSpacing="2" BorderStyle="None"
BorderColor="#DEBA84">
<FooterStyle ForeColor="#8C4510"
BackColor="#F7DFB5"></FooterStyle>
<PagerStyle ForeColor="#8C4510"
HorizontalAlign="Center"></PagerStyle>
<HeaderStyle ForeColor="White" Font-Bold="True"
BackColor="#A55129"></HeaderStyle>
<Columns>
<asp:CommandField ButtonType="Image" ShowEditButton="true" ShowCancelButton="true"
EditImageUrl="Images/icons/edit24.png" UpdateImageUrl="Images/icons/update24.png"
CancelImageUrl="Images/icons/cancel324.png" />
<asp:TemplateField HeaderText="Division">
<ItemTemplate>
<%# Eval("DivisionShortcut")%>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList ID="DivisionsList" runat="server" DataSourceID="DivisionsListDataSource"
DataTextField="DivisionShortcut" DataValueField="SapCode"
SelectedValue='<%# Bind("DivisionCode")%>'>
</asp:DropDownList>
</EditItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Username" HeaderText="Network ID" ReadOnly="True"
SortExpression="Username" />
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<%# Eval("Name")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEmployeeName" runat="server" Text='<%# Bind("Name")%>' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Job Title">
<ItemTemplate>
<%# Eval("JobTitle")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtJobTitle" runat="server" Text='<%# Bind("JobTitle")%>' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Badge No.">
<ItemTemplate>
<%# Eval("BadgeNo")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtBadgeNo" runat="server" Text='<%# Bind("BadgeNo")%>' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Is Active?">
<ItemTemplate>
<asp:Label ID="lblIsActive" runat="server" Text='<%# Eval("IsActive")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:CheckBox ID="isActive" runat="server"
AutoPostBack="true" OnCheckedChanged="isActive_OnCheckedChanged"
Checked='<%# Convert.ToBoolean(Eval("IsActive")) %>'
Text='<%# Eval("IsActive")%>'/>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Delete?">
<ItemTemplate>
<span onclick="return confirm('Are you sure to Delete the record?')">
<asp:ImageButton ID="lnkB" runat="server" ImageUrl="Images/icons/delete24.png" CommandName="Delete" />
</span>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Code-Behind:
//For showing Active or Inactive in the IsActive column instead of True or False
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
//Here we will select the IsActive column and modify its text
Label isActive = new Label();
isActive = (Label)e.Row.FindControl("lblIsActive");
//Now, after getting the reference, we can set its text
isActive.Text = "Active or Inactive";
// First check Checkedbox is check or not, if not make it grey
//if (e.Row.Cells[6].Text == "False")
// GridView1.BackColor = Color.Gray;
}
}
And I am getting the following error and I don't know why:
For question no: 1
You have to add an Row_DataBound Event of your grid view, in which you select the IsActive column and replaced its text by Active and InActive. But before going to code behind make a little change to you aspx code: In your item template instead of direct binding place a label control and bind it as I does in the below code:
<asp:TemplateField HeaderText="Is Active?">
<ItemTemplate>
<asp:Label ID="lblIsActive" runat="server" Text='<%# Eval("IsActive") %>' ></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:CheckBox ID="isActive" runat="server"
AutoPostBack="true" OnCheckedChanged="isActive_OnCheckedChanged"
Checked='<%# Convert.ToBoolean(Eval("IsActive")) %>'
Text='<%# Eval("IsActive").ToString().Equals("True") ? " Active " : " Inactive " %>'/>
</EditItemTemplate>
</asp:TemplateField>
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
// here you will select the IsActive column and modify it's text
Label isActive=new Label();
isActive = (Label) e.row.FindControl("lblIsActive");
// after getting the reference set its text
isActive.Text="Active or InActive";
}
}
For question no 2:
Remove the condition form this
Eval("IsActive").ToString().Equals("True") ? " Active " : " Inactive " %>'
and replace it with
Eval("IsActive")
Now check boxes will be displayed.
Updated Answer:
You are receiving an object reference not found error, Please debug your site and check it why you are unable to get the exact reference. I saw you code and it looks that your code is fine.
To prove that my code is working,I created a gridview with a single column
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnRowDataBound="GridView1_RowDataBound">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("name") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
// and bind this grid view in the Page_Load of my Page
protected void Page_Load(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt.Columns.Add("name");
DataRow row = dt.NewRow();
row[0] = "Waqar Janjua";
dt.Rows.Add(row);
GridView1.DataSource = dt;
GridView1.DataBind();
}
// When I view this page in the browser it shows "Waqar Janjua"
// Now to update the columns text, I add the following code and it works.
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowState != DataControlRowState.Edit)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Label l = new Label();
l = (Label)e.Row.FindControl("Label1");
l.Text = "waqar";
}
}
}
// When I run this page now, it shows me "Waqar" not "Waqar Janjua" The code works for me.
It is returning "true" or "false" as it is expecting a boolean data type from IsActive. If you want to change that out put, I suspect you need to amend this conditionally on the ItemDataBound event of the grid.
i am binding the values to gridview like this
<asp:GridView ID="grdViewAttachment_Client" runat="server" Width="615px" AutoGenerateColumns="False" GridLines="None" CssClass="grid-view" OnRowCommand="grdViewAttachment_Client_RowCommand">
<Columns>
<asp:TemplateField HeaderText="Attachment" HeaderStyle-CssClass="hedding2">
<ItemTemplate>
<asp:LinkButton ID="lnkbtnAttachments" runat="server" Text="Delete" CommandName="Delete" CommandArgument='<%#Eval("AttachmentId") %>' ></asp:LinkButton>
</ItemTemplate>
<HeaderStyle/>
</asp:TemplateField>
<asp:TemplateField HeaderText="Attachment" HeaderStyle-CssClass="hedding2">
<ItemTemplate>
<%--<asp:LinkButton ID="lnkbtnAttachments" runat="server" Text='<%#Eval("AttachmentName") %>' CommandName='<%#Eval("AttachmentName")%>' CommandArgument='<%#Eval("AttachmentId") %>'></asp:LinkButton>--%>
<asp:LinkButton ID="LinkButton1" runat="server" Text='<%#Eval("AttachmentName") %>' CommandName='<%#Eval("AttachmentName")%>' ></asp:LinkButton>
</ItemTemplate>
<HeaderStyle/>
</asp:TemplateField>
<asp:TemplateField HeaderText="AssignedTo" HeaderStyle-CssClass="hedding2">
<ItemTemplate>
<asp:Label ID="lblAssignedTo" Text='<%#Eval("AssignedTo") %>' runat="server" CssClass="body-text"></asp:Label>
</ItemTemplate>
<HeaderStyle />
</asp:TemplateField>
<asp:TemplateField HeaderText="CreationDate" HeaderStyle-CssClass="hedding2">
<ItemTemplate>
<asp:Label ID="lblCreationDate" Text='<%#Eval("CreationDate") %>' runat="server" CssClass="body-text"></asp:Label>
</ItemTemplate>
<HeaderStyle />
</asp:TemplateField>
</Columns>
</asp:GridView>
In my row command event i write as follows code
protected void grdViewAttachment_Client_RowCommand(object sender, GridViewCommandEventArgs e)
{
SqlConnection m_Conn = new SqlConnection(Utilities.ConnectionString());
SqlCommand m_oCmd;
int iStID = int.Parse(e.CommandArgument.ToString());
int pk = 0;
int.TryParse(e.CommandArgument as string, out pk);
string strStoreProcName = null;
DataSet oDS1 = new DataSet();
if (e.CommandName == "Delete")
{
strStoreProcName = StoredProcNames.Attachments_uspDeleteAttachs;
m_oCmd = new SqlCommand(strStoreProcName, m_Conn);
m_oCmd.CommandType = CommandType.StoredProcedure;
m_oCmd.Parameters.Add("#AttachmentId", SqlDbType.Int).Value = Convert.ToInt32(e.CommandArgument.ToString());
m_Conn.Open();
m_oCmd.ExecuteNonQuery();
AttachmentDetails();
}
string fname = e.CommandName.ToString();
}
But i am not getting the value i am getting the exception as Input string was not in correct format can any one help me
es #Muhammad Akhtar was right .It should be like
int iStID = Convert.ToInt32(gridName.DataKeys[Convert.ToInt32(e.CommandArgument.ToString())].Value);
Specify Datakey property in your data grid . and you can access the data key value of the current row as above
add datakey name to your statement
ID_COLUMN should be a column from data table which you are binding to gridview
Write this code for row Created
protected void grdViewAttachment_Client_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
LinkButton lnkbtnAttachments=(LinkButton)e.Row.FindControl("lnkbtnAttachments");
lnkbtnAttachments.CommandArgument = e.Row.RowIndex.ToString();
// similarly write for other controls
}
}
Do not use Delete standard commandName otherwise you have to handle the "RowDeleting" event.
Take a look at this sample:
.aspx markup
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
onrowcommand="GridView1_RowCommand">
<Columns>
<asp:TemplateField>
<ItemTemplate>
Data :
<asp:Label ID="Label1" runat="server" Text='<%# Eval("Name") %>'></asp:Label>
<asp:LinkButton ID="btnDelete" runat="server"
CommandArgument='<%# Eval("No") %>' CommandName="Del">Delete</asp:LinkButton>
<asp:LinkButton ID="btnShow" runat="server" CommandArgument='<%# Eval("No") %>'
CommandName="Show">Show</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Code behind
public class Data
{
public int No { get; set; }
public string Name { get; set; }
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
List<Data> list = new List<Data>()
{
new Data(){ No=1, Name="A"},
new Data(){ No=2, Name="B"},
new Data(){ No=3, Name="C"}
};
GridView1.DataSource = list;
GridView1.DataBind();
}
}
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Del")
{
Response.Write("Delete : " + e.CommandArgument);
}
else
if (e.CommandName == "Show")
{
Response.Write("Show : " + e.CommandArgument);
}
}
As you are not passing command Argument this will always give null reference . Try this in your control where ever you required.
<asp:LinkButton ID="LinkButton1" runat="server" Text='<%#Eval("AttachmentName") %>' CommandName='<%#Eval("AttachmentName")%>' CommandArgument='<%#Eval("AttachmentId") %>'>
<ItemTemplate>
<asp:LinkButton ID="lnkDetails" runat="server" CommandName="Details" CommandArgument='<%#Eval("ID")%>'
ToolTip="View Details">View</asp:LinkButton>
</ItemTemplate>
protected void gvmain_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Details")
{
int id = Convert.ToInt32(e.CommandArgument);
Response.Redirect("~/MEMBER/UploadedDocList.aspx?id=" + id, false);
}
}
I have a GridView with an anonymous type. I need to check the value in a cell and highlight that cell if a condition is met. The problem is, I always get an empty string when I try to pull data out of the row's cells. I have successfully highlighted all the cells and I have checked in the Visual Studio 2010 debugger and confirmed that the Row has data (the row's DataItem has the values I need). This is happening on a PostBack, I'm not sure if that's a problem or not.
Here is the code and solutions I've tried:
protected void grvValidCourses_RowDataBound(Object sender, GridViewRowEventArgs e) {
if (e.Row.RowType == DataControlRowType.DataRow) {
String str = e.Row.Cells[6].Text.ToString(); // empty string
Label lbl = (Label) grvValidCourses.FindControl("lblEndDate"); // null
DataRowView rowView = (DataRowView)e.Row.DataItem; // exception about casting anonymous type
What's going on here? Why can't I get data from the cells?
Markup for GridView:
<asp:GridView ID="grvValidCourses" runat="server" Width="790px" OnRowCancelingEdit="grvValidCourses_RowCancelingEdit"
OnRowEditing="grvValidCourses_RowEditing" OnRowUpdating="grvValidCourses_RowUpdating" OnRowDeleting="grvValidCourses_RowDeleting"
AutoGenerateColumns="False" OnSelectedIndexChanged="grvValidCourses_SelectedIndexChanged"
OnRowDataBound="grvValidCourses_RowDataBound" >
<Columns>
<asp:CommandField ShowEditButton="True" EditText="Edit" UpdateText="Update |" />
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="lbnDelete" runat="server" CausesValidation="False" CommandName="Delete"
Text='<%# (Eval("active") == null ? "Delete" : ((Eval("active").ToString() == "0" ? "Restore" : "Delete"))) %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowSelectButton="True" SelectText="Details" />
<asp:TemplateField HeaderText="Training Name" SortExpression="coursename">
<EditItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("coursename") %>'></asp:Label>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("coursename") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="ttNo" HeaderText="#" SortExpression="ttNo" ReadOnly="True" />
<asp:TemplateField HeaderText="Course Date" SortExpression="startDate">
<EditItemTemplate>
<asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("startdate", "{0:M/d/yyyy}") %>'></asp:TextBox>
<asp:CalendarExtender ID="TextBox3_CalendarExtender" runat="server" Enabled="True"
TargetControlID="TextBox3" Format="M/d/yyyy">
</asp:CalendarExtender>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Bind("startdate", "{0:M/d/yyyy}") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Expiry Date" SortExpression="endDate">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("enddate", "{0:M/d/yyy}") %>'></asp:TextBox>
<asp:CalendarExtender ID="TextBox1_CalendarExtender" runat="server" Enabled="True"
TargetControlID="TextBox1" Format="M/d/yyyy">
</asp:CalendarExtender>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblEndDate" runat="server" Text='<%# Bind("enddate", "{0:M/d/yyyy}") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<EmptyDataTemplate>No valid courses found.</EmptyDataTemplate>
</asp:GridView>
UPDATE: I've been trying all your suggestions, but I get exceptions or nulls or empty strings. I've even re-created the problem in a simpler example and still can't figure it out! I'll keep trying though, and I appreciate any new suggestions.
Part 1 - Missing Text
You are probably getting blank values in the first part due to a need to access a child control:
String str = ((DataBoundLiteralControl)e.Row.Cells[6].Controls[0]).Text;
To see if your cells have any values in debug mode (check text in debug output window):
void grvValidCourses_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
System.Diagnostics.Trace.WriteLine(e.Row.Cells.Count);
foreach (TableCell c in e.Row.Cells)
{
System.Diagnostics.Trace.WriteLine(c.Text);
}
}
}
Part 2 - Missing Control
This is wrong:
Label lbl = (Label) grvValidCourses.FindControl("lblEndDate"); // null
You can't search the gridview for a row's control. You need to search the row.
Label lblProductOptionGrpName = (Label)e.Row.FindControl("lblProductOptionGrpName");
Part 3 - Accessing DataItem
DataBinder.Eval(e.Row.DataItem, "ColumnName")
Finally, I'm not sure what you're doing with your anonymous types, but you may need to check the contents before accessing properties:
if(MyControl.GetType() == typeof(HyperLink))
{
HyperLink TestLink = (HyperLink)MyControl;
TestLink .Visible = false;
}
Okay I finally figured out what is going on! I can only access the bound field through the row (e.g. e.Row.Cells[index].Text). So I used the bound field to get the ID of my item, then found the item in the database, got the date, compared it, and highlighted the row's cells. Not the most efficient way, but it works.
Code from simple sample:
Grid View Front End
<asp:GridView ID="gdv" runat="server" AutoGenerateColumns="True" OnSelectedIndexChanged="gdv_SelectedIndexChanged">
<Columns>
<asp:CommandField ShowSelectButton="True" SelectText="Select" />
<asp:BoundField DataField="id" HeaderText="#" ReadOnly="True" />
<asp:TemplateField HeaderText="CategoryName" >
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("name") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Description" >
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Bind("desc") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Label ID="lblSelected" runat="server" Text="No row selected"></asp:Label>
Code Behind Page
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) {
var qry = ctx.Categories
.Select(c => new {
id = c.CategoryID,
name = c.CategoryName,
desc = c.Description,
});
gdv.DataSource = qry;
gdv.DataBind();
}
}
protected void gdv_SelectedIndexChanged(object sender, EventArgs e) {
selectRow();
}
private void selectRow() {
GridViewRow row = gdv.SelectedRow;
String strId = row.Cells[1].Text; // Bound Field column
lblSelected.Text = strId;
// use ID to get object from database...
}
If you can post markup, then it will be possible to figure out your issue.
You are doing this in wrong way,
this DataRowView rowView = (DataRowView)e.Row.DataItem;
should be DataRow rowView = ((DataRowView)e.Row.DataItem).Row;
protected void gridPanne_RowDataBound(object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType==DataControlRowType.DataRow)
{
Label label = (Label)e.Row.FindControl("Label4");
lbl.Text += " ** / ** "+label.Text;
}
}