Develop Reference

Column sum of only visible row

I am trying to calculate the sum of the grand total column and showing it to the footer of the gridview, which I am able to achieve it. However I have a condition which makes some rows invisible from the gridview, but it is also summing the value of the rows which are invisible. How to sum the column value only for the rows which are visible?
Below is my gridview:
<asp:GridView ID="GridView9" runat="server" AllowPaging="false" AutoGenerateColumns="False"
ShowFooter="true" BackColor="White" DataKeyNames="ID" BorderColor="#999999" CssClass="tableUserInfo"
GridLines="Vertical" ShowHeaderWhenEmpty="True" PageSize="10" OnRowDataBound="GridView9_RowDataBound">
<AlternatingRowStyle BackColor="#CCCCCC" />
<Columns>
<asp:TemplateField HeaderText="SessionId" Visible="true">
<ItemTemplate>
<asp:TextBox ID="txt_GSessionId" runat="server" Text='<%# Eval("SessionId") %>' ReadOnly="true"
Visible="false"></asp:TextBox>
</ItemTemplate>
<HeaderStyle Width="10%" />
<ItemStyle Width="10%" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Customer" Visible="true">
<ItemTemplate>
<asp:Label ID="lblCustomerName" Font-Size="11px" runat="server" Text='<%# Eval("CustomerName") %>'></asp:Label>
</ItemTemplate>
<HeaderStyle Width="8%" />
<ItemStyle Width="8%" />
</asp:TemplateField>
<asp:TemplateField HeaderText="G_Total" Visible="true">
<ItemTemplate>
<asp:Label ID="lblGTotal" Font-Size="11px" runat="server" Text='<%# Eval("GTotal","{0:n}") %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<asp:Label ID="lblTotal" runat="server" Text="Label"></asp:Label>
</FooterTemplate>
<FooterStyle Width="30%" />
<HeaderStyle Width="8%" />
<ItemStyle Width="8%" />
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="Black" ForeColor="Red" Width="100%" Wrap="false" />
<HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />
</asp:GridView>
Here is my code behind:
decimal grdTotal;
protected void GridView9_RowDataBound(object sender, GridViewRowEventArgs e)
{
txt_SessionId.Text = ddlSession.SelectedValue;
foreach (GridViewRow row2 in GridView9.Rows)
{
TextBox sid = row2.FindControl("txt_GSessionId") as TextBox;
int a, b;
a = int.Parse(sid.Text);
b = int.Parse(txt_SessionId.Text);
if (a == b)
{
row2.Visible = true;
}
else
{
row2.Visible = false;
}
}
if (e.Row.Visible && e.Row.RowType == DataControlRowType.DataRow)
{
decimal rowTotal = Convert.ToDecimal(DataBinder.Eval(e.Row.DataItem, "GTotal"));
grdTotal = grdTotal + rowTotal;
}
if (e.Row.RowType == DataControlRowType.Footer)
{
Label lbl = (Label)e.Row.FindControl("lblTotal");
Label lbl1 = (Label)e.Row.FindControl("lblLabourTotal");
lbl.Font.Size = 12;
lbl.Text = "Rs. " + grdTotal.ToString("0");
lbl.ForeColor = System.Drawing.Color.White;
}
}

Edit Command in Gridview

I am extracting data from database in gridview, where I have given a link button "Edit" for editing the data of that row. However while editing , one of the columns(YEAR) of my gridview becomes a dropdown list. While fetching the data from database, the Column "Year" consists of label and in edit mode it gets changed to dropdownlist. Moreover I added a condition to make the link buttons appear/disappear based on the value of the Label "Year". When I edit the particular row it throws an error because as soon as edit command is called it converts the column into dropdownlist however the row_databound searches for label. It shows "Object not set to an instance....." PLease help
Aspx
<asp:GridView ID="gv1" runat="server" AutoGenerateColumns="False" BackColor="White" BorderColor="#3366CC" BorderStyle="None" BorderWidth="1px" CellPadding="4" DataSourceID="SqlDataSource2" OnRowDataBound="gv1_RowDataBound" OnRowUpdating="gv1_RowUpdating" DataKeyNames="tid" CssClass="auto-style1" Width="694px">
<Columns>
<asp:TemplateField HeaderText="Sr No">
<ItemTemplate>
<%#Container.DataItemIndex+1 %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="tid" SortExpression="tid" Visible="false">
<ItemTemplate>
<asp:Label ID="lblID" runat="server" Text='<%# Bind("tid") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Title" SortExpression="title">
<EditItemTemplate>
<asp:TextBox ID="txtTitle1" runat="server" Text='<%# Bind("title") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblTitle" runat="server" Text='<%# Bind("title") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Category" SortExpression="category">
<ItemTemplate>
<asp:Label ID="lblCategory" runat="server" Text='<%# Bind("category") %>'></asp:Label></ItemTemplate>
<EditItemTemplate>
<asp:RadioButtonList ID="rbtnlist" runat="server"><asp:ListItem Text="Soft Skills"></asp:ListItem><asp:ListItem Text="Technical Skills"></asp:ListItem></asp:RadioButtonList>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Announced at" SortExpression="dt">
<ItemTemplate>
<asp:Label ID="lblDt" runat="server" Text='<%# Bind("dt", "{0:dd/MMM/yyyy HH:mm tt}") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Year" SortExpression="year">
<EditItemTemplate>
<asp:DropDownList ID="ddlyr" runat="server"></asp:DropDownList>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblyr" runat="server" Text='<%# Bind("year") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="User Id" SortExpression="userid">
<ItemTemplate>
<asp:Label ID="lblUid" runat="server" Text='<%# Bind("userid") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="btndel" runat="server" CausesValidation="False" CommandName="Delete" Text="Delete" OnClientClick="return isConfirm()" Visible="false"></asp:LinkButton>
<%--<asp:LinkButton ID="btnmail" runat="server" CausesValidation="False" OnClientClick="return isConfirm()" Text="Send Mail" Visible="false"></asp:LinkButton>--%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="False">
<EditItemTemplate>
<asp:LinkButton ID="btnupdte" runat="server" CausesValidation="True" CommandName="Update" Text="Update"></asp:LinkButton>
<asp:LinkButton ID="btncncl" runat="server" CausesValidation="False" CommandName="Cancel" Text="Cancel"></asp:LinkButton>
</EditItemTemplate>
<ItemTemplate>
<asp:LinkButton ID="btnedit" runat="server" CausesValidation="False" CommandName="Edit" Text="Edit" Visible="false"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="false">
<ItemTemplate>
<asp:LinkButton ID="btnmail" runat="server" CausesValidation="False" OnClientClick="return isConfirm()" Text="Send Mail" Visible="false"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="#99CCCC" ForeColor="#003399" />
<HeaderStyle BackColor="#003399" Font-Bold="True" ForeColor="#CCCCFF" />
<PagerStyle ForeColor="#003399" HorizontalAlign="Left" BackColor="#99CCCC" />
<RowStyle BackColor="White" ForeColor="#003399" />
<SelectedRowStyle BackColor="#009999" Font-Bold="True" ForeColor="#CCFF99" />
<SortedAscendingCellStyle BackColor="#EDF6F6" />
<SortedAscendingHeaderStyle BackColor="#0D4AC4" />
<SortedDescendingCellStyle BackColor="#D6DFDF" />
<SortedDescendingHeaderStyle BackColor="#002876" />
</asp:GridView>
c#
protected void gv1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Label lbly = (Label)e.Row.FindControl("lblyr");
if (lbly.Text == DateTime.Now.Year.ToString() || lbly.Text == ((DateTime.Now.Year)-1).ToString())
{
LinkButton btedt = (LinkButton)e.Row.FindControl("btnedit");
LinkButton btdel = (LinkButton)e.Row.FindControl("btndel");
LinkButton btsm = (LinkButton)e.Row.FindControl("btnmail");
btdel.Visible = true;
btedt.Visible = true;
btsm.Visible = true;
}
if ((e.Row.RowState & DataControlRowState.Edit) > 0) {
RadioButtonList rbtnlist = (RadioButtonList)e.Row.FindControl("rbtnlist");
DropDownList ddlist = (DropDownList)e.Row.FindControl("ddlyr");
for (int i = (DateTime.Now.Year); i >= ((DateTime.Now.Year)-1) ; i--)
{
ddlist.Items.Add(new ListItem(i.ToString(), i.ToString()));
}
ddlist.DataBind();
rbtnlist.DataBind();
}
}
}

I am assuming that you are binding your grid with a DataTable with colum name "Year". Try below code where dt refers to your Datatable:
protected void gv1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
int rowno = e.Row.DataItemIndex;
//Suppose dt is DataTable to which you are binding your grid
//and year is the column name within this datatable
string year = Convert.ToString(dt.Rows[e.Row.DataItemIndex]["year"]);
if (year == DateTime.Now.Year.ToString() || year == ((DateTime.Now.Year) - 1).ToString())
{
LinkButton btedt = (LinkButton)e.Row.FindControl("btnedit");
LinkButton btdel = (LinkButton)e.Row.FindControl("btndel");
LinkButton btsm = (LinkButton)e.Row.FindControl("btnmail");
btdel.Visible = true;
btedt.Visible = true;
btsm.Visible = true;
}
if ((e.Row.RowState & DataControlRowState.Edit) > 0)
{
RadioButtonList rbtnlist = (RadioButtonList)e.Row.FindControl("rbtnlist");
DropDownList ddlist = (DropDownList)e.Row.FindControl("ddlyr");
for (int i = (DateTime.Now.Year); i >= ((DateTime.Now.Year) - 1); i--)
{
ddlist.Items.Add(new ListItem(i.ToString(), i.ToString()));
}
ddlist.DataBind();
rbtnlist.DataBind();
}
}

Onselect in Dropdown send mail to respective user

I have a gridview in which I have a column name "Selection". I want whenver a admin selects Not Selected option the respective user should get an email on his ID that he has been rejected. Please see the gridview code for your reference:
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" AllowPaging="true" Width="920"
PageSize="5" OnPageIndexChanging="gv_Applicants_PageIndexChanging" OnRowCommand="gv_Applicants_RowCommand"
EmptyDataText="No Applicants Found."
AllowSorting="true"
OnSorting="gv_Applicants_Sorting"
OnRowDataBound="gv_Applicants_RowDataBound" RowStyle-CssClass="a12" AlternatingRowStyle-CssClass="a22" ForeColor="#333333" GridLines="None" CssClass="table_box" HeaderStyle-Height="35px">
<AlternatingRowStyle BackColor="#F0F0F0" />
<Columns>
<asp:BoundField DataField="FirstName" HeaderText="First Name" HeaderStyle-Width="84" />
<asp:BoundField DataField="LastName" HeaderText="Last Name" HeaderStyle-Width="106" />
<asp:BoundField DataField="ContactNumber" HeaderText="Contact" HeaderStyle-Width="98" />
<asp:BoundField DataField="Email" HeaderText="Email" HeaderStyle-Width="150" />
<asp:TemplateField HeaderText="Position" SortExpression="Position" HeaderStyle-Width="107">
<ItemTemplate>
<%# Eval("Job.Position") %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Location" SortExpression="Location" HeaderStyle-Width="100">
<ItemTemplate>
<%# Eval("Job.Location") %>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="AppliedDate" DataFormatString="{0:MMMM dd, yyyy}" HeaderText="Date of Application" ReadOnly="true" HeaderStyle-Width="121" />
<asp:TemplateField HeaderText="Action" HeaderStyle-HorizontalAlign="Center">
<ItemTemplate>
<asp:LinkButton ID='lnkView' CommandName='v' Text='View' runat='server' CommandArgument='<%# Eval("ApplicantId") %>'></asp:LinkButton>
|
<asp:LinkButton ID='lnkdel' CommandName='d' Text='Delete' runat='server' CommandArgument='<%# Eval("ApplicantId") %>' OnClientClick="return confirm('Are you sure to delete?');"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Selection">
<ItemTemplate>
<asp:Label ID="lblCountry" runat="server" Visible="true" />
<asp:DropDownList ID="ddlCountries" runat="server">
<asp:ListItem Text="None" Value="1"></asp:ListItem>
<asp:ListItem Text="Selected" Value="2"></asp:ListItem>
<asp:ListItem Text="Not Selected" Value="3"></asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<EditRowStyle BackColor="#2461BF" />
<FooterStyle BackColor="#D8DADA" Font-Bold="True" />
<HeaderStyle BackColor="#D8DADA" Font-Bold="True" />
<PagerStyle BackColor="#D8DADA" HorizontalAlign="Center" />
<RowStyle BackColor="white" BorderStyle="Solid" BorderColor="#a8a8a8" BorderWidth="1px" Height="35" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
Eidted code:-
private void SendMail()
{
StringBuilder sbuilder = new StringBuilder();
sbuilder.Append("<div>");
sbuilder.Append("<p>Thanks for applying at RBL. You have been rejected</p>");
sbuilder.Append("</div>");
string str = sbuilder.ToString();
string ccEmail = "";
Common objCom = new Common();
string toId = ConfigurationManager.AppSettings["ddlEmail"].ToString();
objCom.SendEMail(toId, "Rejection Mail", sbuilder.ToString(), ccEmail, false, "");
}
protected void ddlSelection_SelectedIndexChanged(object sender, EventArgs e)
{
DropDownList ddl = (DropDownList)sender;
GridViewRow row = (GridViewRow)ddl.Parent.Parent;
if (ddl.SelectedValue == "Not Selected")
{
SendMail();
}
}

Try this,
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType == DataControlRowType.DataRow)
{
DropDownList ddl = e.Row.FindControl("ddlCountries") as DropDownList;
if(ddl != null)
{
ddl.SelectedIndexChanged += new EventHandler(ddlCountries_SelectedIndexChanged);
}
}
}
protected void ddlCountries_SelectedIndexChanged(object sender, EventArgs e)
{
string selectedValue = ((DropDownList)sender).SelectedValue;
if(selectedValue== "Not Selected")
{
// Write code here for sending mail
}
}

Add check box to gridview

I've a grid view with three columns Employee name Employee details and Employee age.
I want to add a check box at each row and after selection of each check box i want to fire a insert query associated to that employee.
Can you tell me how to add this dynamic functionality to the grid view.
also if we use <%# EVAL %> i don't know how to implement it with checkbox.

ASPX:
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="name" HeaderText="name" SortExpression="name" />
<asp:BoundField DataField="details" HeaderText="details"
SortExpression="details" />
<asp:BoundField DataField="age" HeaderText="age" SortExpression="age" />
</Columns>
</asp:GridView>
<br />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="OK" />
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:connApps %>"
SelectCommand="SELECT [name], [details], [age] FROM [tblA]">
</asp:SqlDataSource>
<br />
<asp:Label ID="Label1" runat="server"></asp:Label>
Code behind:
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = "Selected item name:<br>";
foreach (GridViewRow item in GridView1.Rows)
{
CheckBox chk = (CheckBox)item.FindControl("CheckBox1");
if (chk != null)
{
if (chk.Checked)
{
Label1.Text += item.Cells[1].Text + "<br>";
}
}
}
}
Output:

Here is an example ,
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
BackColor="White" BorderColor="#336699" BorderStyle="Solid" BorderWidth="1px"
CellPadding="0" CellSpacing="0" DataKeyNames="CategoryID" Font-Size="10"
Font-Names="Arial" GridLines="Vertical" Width="40%">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkStatus" runat="server"
AutoPostBack="true" OnCheckedChanged="chkStatus_OnCheckedChanged"
Checked='<%# Convert.ToBoolean(Eval("Approved")) %>'
Text='<%# Eval("Approved").ToString().Equals("True") ? " Approved " : " Not Approved " %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="CategoryID" HeaderText="CategoryID" />
<asp:BoundField DataField="CategoryName" HeaderText="CategoryName" />
</Columns>
<HeaderStyle BackColor="#336699" ForeColor="White" Height="20" />
For more information , check Here !

you can use TemplateFields for the GridView:
<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:TemplateField >
<ItemTemplate>
<asp:CheckBox ID="myCheckBox" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
and in code behind use below code:
ClusterName = GV.Rows(1).Cells(2).FindControl("myLabelinTheGridViewTemplateField")

Can't get gridview row once templatefield button is clicked

When a Button in the GridView is clicked I can't seem to get the row index or the row that is to be eliminated, I need the Id and the Complete route of the archive, both of them are on the bound fields of the GridView, here is the code I have:
Gridview Code:
<asp:GridView ID="gdvData"
AllowSorting="False"
AllowPaging="True"
AutoGenerateColumns="False"
AutoGenerateDeleteButton="False"
runat="server"
EmptyDataText="No existen archivos cargados."
Width="100%">
<AlternatingRowStyle CssClass="alternatingrowstyle" />
<Columns>
<asp:BoundField HeaderText="Id"
DataField="Id"
Visible="false" >
<HeaderStyle CssClass="left" />
<ItemStyle CssClass="left" />
</asp:BoundField>
<asp:BoundField HeaderText="RutaCompleta"
DataField="RutaCompleta"
Visible="false" >
<HeaderStyle CssClass="left" />
<ItemStyle CssClass="left" />
</asp:BoundField>
<asp:TemplateField HeaderText="Archivo">
<ItemTemplate>
<asp:HyperLink runat="server"
CssClass="left"
Target="_blank"
NavigateUrl='<%#Eval("RutaCompleta")%>'
Text='<%#Eval("Archivo")%>'>
</asp:HyperLink>
</ItemTemplate>
<HeaderStyle CssClass="left" />
<ItemStyle HorizontalAlign="left" />
</asp:TemplateField>
<asp:TemplateField HeaderImageUrl="~/Images/page_delete.ico"
HeaderText="Eliminar">
<ItemTemplate>
<asp:ImageButton ID="ImgDelete"
runat="server"
CommandArgument="Delete"
ImageUrl="~/Images/page_delete.ico"
OnClick="btnEliminar_Click"
OnClientClick="return confirm('¿Esta seguro de eliminar este archivo?');"
ToolTip="Borrar Documento"/>
</ItemTemplate>
<HeaderStyle CssClass="center" />
<ItemStyle CssClass="center"/>
</asp:TemplateField>
</Columns>
<HeaderStyle CssClass="headerstyle" />
<PagerStyle CssClass="pagerstyle" />
<PagerTemplate>
<asp:Label ID="Label1" runat="server" Text="Mostrar filas:" />
<asp:DropDownList ID="ddlPageSize"
runat="server"
AutoPostBack="true"
CssClass="CombosBox"
>
<asp:ListItem Value="10" />
<asp:ListItem Value="15" />
<asp:ListItem Value="20" />
</asp:DropDownList>
<asp:Label ID="lblDesde" runat="server" Text="Página" />
<asp:TextBox ID="txtGoToPage"
runat="server"
AutoPostBack="true"
CssClass="gotopage"
/>
<asp:Label ID="lblHasta" runat="server" Text="de " />
<asp:Label ID="lblTotalNumberOfPages" runat="server" />
<asp:Button ID="btnAnt"
runat="server"
CommandArgument="Prev"
CommandName="Page"
CssClass="previous"
ToolTip="ant. página" />
<asp:Button ID="btnProx"
runat="server"
CommandArgument="Next"
CommandName="Page"
CssClass="next"
ToolTip="prox. página" />
</PagerTemplate>
</asp:GridView>
Code Behind:
protected void btnEliminar_Click(object sender, EventArgs e)
{
try
{
Int64 intId = 0;
String strRutaCompleta = String.Empty;
GridViewRow row = (GridViewRow)(sender as Control).Parent.Parent;
Label lblId = (Label)row.FindControl("lblId");
Label lblRutaCompleta = (Label)row.FindControl("lblRutaCompleta");
intId = Convert.ToInt64(lblId.Text.ToString());
strRutaCompleta = lblRutaCompleta.Text.ToString();
/*Other part of the code*/
}
catch(Exception)
{
/*Other part of the code*/
}
}
I have tried various methods found here on StackOverflow, hope you guys can help me. Thanks.

Instead of using .Parent.Parent, I recommend using the CommandArgument property of the ImageButton and set the dataitem's Id.
Here is another post on StackOverflow that give a good bit of code: ASP.NET GridView RowIndex As CommandArgument
It appears to me that all you need is the Id of the data you want to delete. So instead of trying to use the row's index, just put the Id in the button's CommandArgument
Example:
<asp:ImageButton ID="ImgDelete"
runat="server"
CommandArgument="Delete"
ImageUrl="~/Images/page_delete.ico"
OnClick="btnEliminar_Click"
CommandArgument='<%#Eval("Id")%>'
OnClientClick="return confirm('¿Esta seguro de eliminar este archivo?');"
ToolTip="Borrar Documento"/>
Code Behind:
protected void btnEliminar_Click(object sender, EventArgs e)
{
try
{
Int64 intId = 0;
ImageButton btn = (sender as ImageButton)
if(btn != null)
{
Int64 tempId;
if(Int64.TryParse(btn.CommandArgument, out tempId))
{
intId = intId;
/*Other part of the code*/
}
}
}
catch(Exception)
{
/*Other part of the code*/
}
}