In aspx put the grid in
the given way-:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<!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">
<div>
<asp:GridView ID="gvParent"
runat="server"
AutoGenerateColumns="False"
BackColor="White"
BorderColor="White"
BorderStyle="Ridge"
BorderWidth="2px"
CellPadding="3"
CellSpacing="1"
GridLines="None"
OnRowCommand="gvParent_RowCommand">
<Columns>
<asp:BoundField DataField="Grp_Id"
HeaderText="ID"
SortExpression="Grp_Id"
/>
<asp:BoundField DataField="GrpNm"
HeaderText="Name"
SortExpression="GrpNm"
/>
<asp:TemplateField HeaderText="Group">
<ItemTemplate>
<asp:Button ID="btnShowChild" runat="server" CommandArgument='<%# Bind("Grp_Id") %>'
CommandName="ShowChild"
Text="+"
/>
<asp:Button ID="btnHideChild" runat="server" CommandArgument='<%# Bind("Grp_Id") %>'
CommandName="HideChild"
Text="-"
Visible="false"
/>
<asp:GridView ID="gvChild" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:BoundField DataField="Acct_Id"
HeaderText="AcctId"
SortExpression="Acct_Id"
/>
<asp:BoundField DataField="PartyNm"
HeaderText="Party
Name" SortExpression="PartyNm" />
<asp:BoundField DataField="TempAdd"
HeaderText="Address"
SortExpression="TempAdd"
/>
</Columns>
</asp:GridView>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="#C6C3C6"
ForeColor="Black"
/>
<HeaderStyle BackColor="#4A3C8C"
Font-Bold="True"
ForeColor="#E7E7FF"
/>
<PagerStyle BackColor="#C6C3C6"
ForeColor="Black"
HorizontalAlign="Right"
/>
<RowStyle BackColor="#DEDFDE"
ForeColor="Black"
/>
<SelectedRowStyle
BackColor="#9471DE"
Font-Bold="True"
ForeColor="White"
/>
<SortedAscendingCellStyle
BackColor="#F1F1F1"
/>
<SortedAscendingHeaderStyle
BackColor="#594B9C"
/>
<SortedDescendingCellStyle
BackColor="#CAC9C9"
/>
<SortedDescendingHeaderStyle
BackColor="#33276A"
/>
</asp:GridView>
</div>
</form>
</body>
</html>
Code Behind File will be
like this--:
using System;
using System;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class _Default :
System.Web.UI.Page
{
SqlConnection con = new
SqlConnection(ConfigurationManager.ConnectionStrings["DbMandiConnectionString"].ConnectionString);
string query = null;
protected void
Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindParentGrid();
}
}
public void
BindParentGrid()
{
query
= "SELECT [Grp_Id] ,[GrpNm] FROM [dbo].[tbl_Group]";
SqlDataAdapter sdap = new
SqlDataAdapter(query, con);
DataSet ds = new DataSet();
sdap.Fill(ds);
gvParent.DataSource = ds;
gvParent.DataBind();
ds.Clear();
}
protected void
gvParent_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "ShowChild")
{
query = "SELECT * FROM [dbo].[tbl_AccountMaster] where
[Grp_Id]=" + e.CommandArgument.ToString() + "";
SqlDataAdapter sdap = new
SqlDataAdapter(query, con);
DataSet ds = new DataSet();
sdap.Fill(ds);
for (int i = 0; i
< gvParent.Rows.Count; i++)
{
if (e.CommandArgument.ToString() ==
(gvParent.Rows[i].Cells[0].Text))
{
((GridView)gvParent.Rows[i].FindControl("gvChild")).DataSource = ds;
((GridView)gvParent.Rows[i].FindControl("gvChild")).DataBind();
((Button)gvParent.Rows[i].FindControl("btnShowChild")).Visible = false;
((Button)gvParent.Rows[i].FindControl("btnHideChild")).Visible = true;
}
}
}
if (e.CommandName == "HideChild")
{
for (int i = 0; i
< gvParent.Rows.Count; i++)
{
if (e.CommandArgument.ToString() ==
(gvParent.Rows[i].Cells[0].Text))
{
((GridView)gvParent.Rows[i].FindControl("gvChild")).DataSource = null;
((GridView)gvParent.Rows[i].FindControl("gvChild")).DataBind();
((Button)gvParent.Rows[i].FindControl("btnShowChild")).Visible = true;
((Button)gvParent.Rows[i].FindControl("btnHideChild")).Visible = false;
}
}
}
}
}