Develop Reference

underline cell value when specific characters appear in grid view

I have to check a condition if the value of QUALITY is D or E then underline it in grid view. How can I do that in ItemTemplate?
<asp:TemplateField HeaderText="TOTAL QUALITY">
<ItemTemplate>
<%# Eval("QUALITY").ToString() == "D" %>
</ItemTemplate>
</asp:TemplateField>

change Your Design in .aspx file like
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnRowDataBound="GridView1_RowDataBound">
<Columns>
<asp:TemplateField HeaderText="TOTAL QUALITY">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("QUALITY")%>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
in .cs file
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Label Label1 = (Label)e.Row.FindControl("Label1");
if (DataBinder.Eval(e.Row.DataItem, "QUALITY").ToString().ToUpper() == "D" || DataBinder.Eval(e.Row.DataItem, "QUALITY").ToString().ToUpper() == "E")
{
Label1.Style.Add("text-decoration", "underline");
}
}
}
you can add some more css style to beautify label.

Find header value for a cell in a grid

I have gridview, I want to do a foreach on it's rows and get the value from column's header where there's a Label for one cell from this row.
foreach (GridViewRow mainRow in grid1.Rows)
{
var header = mainRow.Cells[2].Parent.FindControl("LabelID");//is null
}
How do I find it ?

If you want the value in RowDataBound event then you can check RowType like this
if(e.Row.RowType == DataControlRowType.Header)
{
Label header = (Label)e.Row.FindControl("LabelID");
}

I would access the headerRow and enumerate through the according cells (on buttonClick or on RowDataBound ...)
default.aspx
<asp:GridView AutoGenerateColumns="false" ID="GridView1" runat="server">
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:Label ID="headerLabel1" runat="server" Text="Headercolumn1"></asp:Label>
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="itemLabel1" runat="server" Text='<%# Eval("name") %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Button ID="btnGetHeader" runat="server" Text="GetHeader" OnClick="btnGetHeader_Click" />
default.aspx.cs
protected void btnGetHeader_Click(object sender, EventArgs e)
{
foreach (TableCell headerCell in GridView1.HeaderRow.Cells)
{
// or access Controls with index
// headerCell.Controls[INDEX]
Label lblHeader = headerCell.FindControl("headerLabel1") as Label;
if (lblHeader != null)
Debug.WriteLine("lblHeader: " + lblHeader.Text);
}
}

C# getting selected value from dropdownlist in gridview asp net

How can I change the value of a textbox whenever a dropdownlist within a gridview has its value changed?
On page load, the textbox shows the selected value, but when I change the selection of the dropdownlist, the textbox value doesn't change.
The code is below.
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns = "false">
<Columns>
<asp:TemplateField HeaderText="Entry">
<ItemTemplate>
<%# Container.DataItemIndex + 1 %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Duty">
<ItemTemplate>
<asp:DropDownList ID="duty" runat="server" OnLoad = "ddl1_load" OnSelectedIndexChanged="duty_SelectedIndexChanged" autopostback="true" EnableViewState="true"></asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
The code behind is below.
protected void ddl1_load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DataTable dt = new DataTable();
Duty dy = new Duty();
dt = dy.getdutyid(Convert.ToInt32(dropcontractid.SelectedValue));
DropDownList ddl = (DropDownList)sender;
ddl.DataSource = dt;
ddl.DataTextField = "dutyid";
ddl.DataValueField = "dutyid";
ddl.DataBind();
TextBox1.Text = ddl.SelectedValue;
}
}

You need to use SelectedIndexChanged handler to show selected value:
Markup:
<asp:DropDownList ID="duty" runat="server" OnLoad="ddl1_load" OnSelectedIndexChanged="duty_SelectedIndexChanged"></asp:DropDownList>
Code-behind:
protected void duty_SelectedIndexChanged(object sender, EventArgs e)
{
GridViewRow gvr = (GridViewRow)(((Control)sender).NamingContainer);
DropDownList duty= (DropDownList) gvr.FindControl("duty");
TextBox1.Text = duty.SelectedItem.Value;
}

I had a similar problem using the DropDownLists in GridView. My solution was to adjust the onLoad for the dropdown so that it wouldn't re-write the DropDownList on every post back. This way if there's something there then it won't re-populate it.
protected void dropDownLoad(object sender, EventArgs e)
{
DropDownList dropDown = sender as DropDownList;
if (dropDown.SelectedValue == null || dropDown.SelectedValue == "")
{
// Your Code to populate table
}
}

You should look into using data binding instead. You can bind the textbox.Text to the selecteditem.value, this will ensure that proper updating takes place

this happens to me once then i code like this... but i didnt use the onLoad attribute, tell me if this works,
<asp:TemplateField HeaderText="duty" SortExpression="duty">
<EditItemTemplate>
<asp:TextBox ID="duty" runat="server" Text='<%# Bind("duty_Name") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblduty" runat="server" Text='<%# Eval("duty_Name") %>' />
<asp:DropDownList ID="ddlduty" runat="server" CssClass="dropdownlist"
OnLoad = "ddl1_load" OnSelectedIndexChanged="duty_SelectedIndexChanged" Visible = "false"
>
</asp:DropDownList>
</ItemTemplate>
<HeaderStyle Width="5%" />
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>

How can I select all data from GridView's current row

How can I select all data from GridViews current row..
I have a column for edit link in GridView. When "Edit" link button is clicked, I want to use that selected row's data. I am trying the following code, but it's returning me with an empty value
protected void gv_RowEditing(object sender, GridViewEditEventArgs e)
{
gv.EditIndex = -1;
GridViewRow gvRow = gv.Rows[ e.NewEditIndex];
string selectedID = gvRow.Cells[3].Text;
}
<asp:GridView runat = "server" ID="gvRange0" SkinID="gridView" AutoGenerateColumns="False"
AllowSorting="True" OnRowCancelingEdit="gvRange_RowCancelingEdit" OnRowDeleting="gvRange_RowDeleting"
OnRowEditing="gvRange_RowEditing" OnRowUpdating="gvRange_RowUpdating"
Width="684px" OnRowDataBound="gvRange_RowDataBound"
DataMember="DefaultView" OnPageIndexChanged="gvRange_PageIndexChanged"
OnPageIndexChanging="gvRange_PageIndexChanging" OnSorting="gvRange_Sorting" DataKeyNames = "RANGE_ID"
OnSelectedIndexChanged="gvRange_SelectedIndexChanged" Height="65px" >
<Columns>
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<ControlStyle Width="2px" />
<asp:LinkButton ID="lnkDelete0" runat="server" CssClass="lnk"
CausesValidation="False" CommandName="Delete"
Text="Delete" Visible="false"></asp:LinkButton>
<asp:CheckBox runat="server" ID="chkSelect" CssClass="lbl" Text="" AutoPostBack="False" OnCheckedChanged="chkSelect_CheckedChanged" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<controlStyle width="2px" />
<asp:LinkButton ID="lnkEdit" runat="server" CssClass="lnk" CausesValidation="False" CommandName="Edit"
Text="Edit" ></asp:LinkButton>
</ItemTemplate>
<ItemStyle Width="5px" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Ranges" SortExpression="Sort_Ranges">
<ControlStyle Width="5px" />
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem,"Min_Age") %>
<%# CheckNull(DataBinder.Eval(Container.DataItem,"Max_Age")) %>
</ItemTemplate>
<%-- <ItemTemplate>--%>
<%--<asp:Label ID="lblStageName" CssClass="lbl" runat="server" Text='<%# Bind("Age_Range") %>' Width="1px"></asp:Label>--%>
<%-- </ItemTemplate>--%>
</asp:TemplateField>
<asp:TemplateField HeaderText="Range ID">
<ItemTemplate><%#DataBinder.Eval(Container.DataItem,"RANGE_ID") %></ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
There are 4 columns in the GridView. One contains check box, second is link button for edit, third databound with some value, fourth is the column which I want to use to get some values from database(that is primary key there) and this column is hidden.

sometime in gridview cell create child controls.
you can try this code. may be solve it.
protected void gv_RowEditing(object sender, GridViewEditEventArgs e)
{
gv.EditIndex = -1;
GridViewRow gvRow= (GridViewRow)(((Button)e.CommandSource).NamingContainer);
foreach (TableCell Tc in gvRow.Cells)
{
//if you are not getting value than find childcontrol of TabelCell.
string sss = c.Text;
foreach (Control ctl in Tc.Controls)
{
//Child controls
Label lb = ctl as Label;
string s = lb.Text;
sb.Append(s + ',');
}
}
}

I've noticed that you say you need to access the 4th column but you're using gvRow.Cells[3].Text;
The indexing in the Cell object is done from 1, so if you need to access the 4th row in the grid view try this:
string selectedID = gvRow.Cells[4].Text;
EDIT:
Could you please confirm two things for me
1)When you click on lnkEdit is the GridView1_RowEditing event being raised?
2)If yes, is the e.NewEditIndex value always showing up as '0'?
Attempt clicking the edit link on different rows, is the result always '0'?

bind data to repeater inside a gridview

Hi have a repeater which is inside a gridview. when i bind the data to gridview the data is binding to the controles inside the gridview but repeater is not binding.
<asp:GridView ID="gvMain" runat="server" AllowPaging="false" AutoGenerateColumns="false"
Width="200px" Height="200px"
onrowdatabound="gvMain_RowDataBound">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="lbtnDptName" runat="server" Text='<%# Eval("deptName")%>'></asp:LinkButton>
<asp:Label ID="lblDptDesc" runat="server" Text = "sdfsdfsdfdsf"></asp:Label>
<asp:Repeater ID="rtFunctions" runat="server" OnItemDataBound="rtFunctions_ItemDataBound" >
<HeaderTemplate>
<table>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
<asp:LinkButton ID="lbtnFunctions" runat="server" ></asp:LinkButton>
<asp:Label ID="lbltemp" Style="border:1px solid blue;width:20px;height:20px;background:green" runat="server" Text="TempLabel" ></asp:Label>
</td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
in Page load:
gvMain.DataSource = objDeptColl;
gvMain.DataBind();
Codebehind for repeater:
protected void gvMain_RowDataBound(object sender, GridViewRowEventArgs e)
{
FunctionCollection objTempFuncColl = new FunctionCollection();
objTempFuncColl = (FunctionCollection)Cache["objFuncColl"];
Repeater rt = (Repeater)e.Row.FindControl("rtFunctions");
if (e.Row.RowType == DataControlRowType.DataRow && objTempFuncColl.Count !=0 )
{
rt.DataSource = objTempFuncColl;
rt.DataBind();
}
}
protected void rtFunctions_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
FunctionCollection objTempFuncColl = new FunctionCollection();
objTempFuncColl = (FunctionCollection)Cache["objFuncColl"];
Repeater rt = (Repeater)e.Item.FindControl("rtFunctions");
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
foreach (Functions f in objTempFuncColl)
{
LinkButton lnk = (LinkButton)e.Item.FindControl("lbtnFunctions");
lnk.Text = f.funcName;
}
}
}
linkbutton in gridview is binding but the linkbutton in repeater is not binding.

The problem appears to be with your repeater ondatabound function.
FunctionCollection objTempFuncColl = new FunctionCollection();
objTempFuncColl = (FunctionCollection)Cache["objFuncColl"];
The first line is not needed as you then replace it with the contents of the cache, which might be null if it's expired or purged or an instance.
For each row in your repeater, the link will be set to the last value in the objtempfunccoll.
you don't really need any of the function apart from lnk.Text = f.funcName; (you'll need to cast f from dataitem)
When you databind to the gridview, ondatabound is called for each row. you've got that wired-up. For each row you now need to find the repeater, set its datasource (we'll call this inner collection) & call databind on the repeater. this will cause ondatabound on the repeater to be called but the container.dataitem now points to each item in the inner collection. We can use that directly, casting container.dataitem to whatever type the inner collection is a list of.
protected void gvMain_RowDataBound(object sender, GridViewRowEventArgs e)
{
FunctionCollection objTempFuncColl = (FunctionCollection)Cache["objFuncColl"];
Repeater rt = (Repeater)e.Row.FindControl("rtFunctions");
if (e.Row.RowType == DataControlRowType.DataRow && objTempFuncColl.Count !=0 )
{
rt.DataSource = objTempFuncColl;
rt.DataBind();
}
}
protected void rtFunctions_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
lnk.Text = ((Functions)e.Item.DataItem).funcName;
}
Simon

You do not appear to be binding the repeater within any of this code. You may have some code to bind data to the GridView control, but this will not automatically bind anything to the repeater within the ItemTemplate.

Why don't databind in the aspx, leaving empty the code behind:
<asp:GridView ID="gvMain" runat="server" AllowPaging="false" AutoGenerateColumns="false"
Width="200px" Height="200px">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="lbtnDptName" runat="server" Text='<%# Eval("deptName")%>'></asp:LinkButton>
<asp:Label ID="lblDptDesc" runat="server" Text = "sdfsdfsdfdsf"></asp:Label>
<asp:Repeater ID="rtFunctions" runat="server" DataSource='<%# Cache["objFuncColl"] %>' >
<HeaderTemplate>
<table>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
<asp:LinkButton ID="lbtnFunctions" runat="server" Text='<%# Eval("funcName") %>' ></asp:LinkButton>
<asp:Label ID="lbltemp" Style="border:1px solid blue;width:20px;height:20px;background:green" runat="server" Text="TempLabel" ></asp:Label>
</td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>