asp.net Gridview Boolean column from code-behind

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I using the same datatable that has a Boolean field to bind it to 2 different gridviews. One gridview is designed in aspx file and there is a template column for Boolean field
<asp:TemplateField>
<itemtemplate>
<asp:CheckBox ID="cb" runat="server" Width="100px"
Checked='<%# Convert.ToBoolean(Eval("boolField")) %>' />

<itemstyle horizontalalign="Center">

this works fine
but the second grid is built in the code behind

gr2.Columns.Clear();

for (int i = 0; i < dt.Rows.Count; i++)
{
BoundField dF = new BoundField();

dF.DataField = dt.Rows[i].ItemArray[0].ToString();
dF.HeaderText = dt.Rows[i].ItemArray[1].ToString();

gr2.Columns.Add(dF);
}

gr2.DataSource = dt;
gr2.DataBind();

this also works but shows bool column values as True/False.
I'd like it either to display Yes/No or check boxes. I know how to implement Checkbox via ItemTemplate in the code behind but can't figure out how to populate check boxes, in other words how to accomplish Checked='<%# Convert.ToBoolean(Eval("boolField")) %>' in the code behind.

Posted 14-Sep-15 8:16am

esb77

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Manas_Kumar · Answer 1 · 2015-09-14T08:48:00

In order to implement it through codebehind please find below steps:

Step1: Add OnRowDataBound property in griview.

ASP.NET

<asp:gridview id="GridView1" runat="server" autogeneratecolumns="False" onrowdatabound="GridView1_RowDataBound" cellpadding="4" forecolor="#333333" gridlines="None" xmlns:asp="#unknown">
	<columns>
		<asp:boundfield datafield="UserId" headertext="User Id" />
		<asp:templatefield headertext="Select">
		<itemtemplate>
			<asp:checkbox id="chkSelect" runat="server" />
		</itemtemplate>
	</asp:templatefield></columns>
</asp:gridview>

Step2: Add OnRowDataBound method in code behind.

C#

 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
        //Check for the row type, which should be data row
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            //Find the check boxes and assign the values from the data source
            ((CheckBox)e.Row.FindControl("chkSelect")).Checked = Convert.ToBoolean(((DataRowView)e.Row.DataItem)[1]);
        }
}

http://www.c-sharpcorner.com/uploadfile/MohanKumar.R/selecting-checkboxes-inside-the-gridview-control/[^]