<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Gridview_DDL.WebForm1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false"
OnRowDataBound="OnRowDataBound">
<Columns>
<asp:BoundField HeaderText="Name" DataField="ContactName" />
<asp:TemplateField HeaderText = "Country">
<ItemTemplate>
<asp:Label ID="lblCountry" runat="server"
Text='<%# Eval("Country") %>' Visible = "false" />
<asp:DropDownList ID="ddlCountries" runat="server"></asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace Gridview_DDL
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
GridView1.DataSource =
GetData("SELECT
ContactName, Country FROM Customers");
GridView1.DataBind();
}
}
private DataSet GetData(string query)
{
string conString =
ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
SqlCommand cmd = new SqlCommand(query);
using (SqlConnection con = new
SqlConnection(conString))
{
using (SqlDataAdapter sda = new SqlDataAdapter())
{
cmd.Connection = con;
sda.SelectCommand = cmd;
using (DataSet ds = new DataSet())
{
sda.Fill(ds);
return ds;
}
}
}
}
protected void OnRowDataBound(object sender,
GridViewRowEventArgs e)
{
if (e.Row.RowType ==
DataControlRowType.DataRow)
{
//Find the DropDownList in the Row
DropDownList ddlCountries =
(e.Row.FindControl("ddlCountries") as DropDownList);
ddlCountries.DataSource =
GetData("SELECT
DISTINCT Country FROM Customers");
ddlCountries.DataTextField = "Country";
ddlCountries.DataValueField = "Country";
ddlCountries.DataBind();
// Add Default Item in the DropDownList
ddlCountries.Items.Insert(0, new ListItem("Please
select"));
// Select the Country of Customer in
DropDownList
string country = (e.Row.FindControl("lblCountry") as Label).Text;
ddlCountries.Items.FindByValue(country).Selected = true;
}
}
}
}
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