Below is the code for sorting on columns in dynamically bounded gridview
ExGridViewSorting .aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ExGridViewSorting.aspx.cs" Inherits="ExGridViewSorting" %>
<!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="GridView1" runat="server" onsorting="GridView1_Sorting" AllowSorting="true">
</asp:GridView>
</div>
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using System.Configuration;
public partial class ExGridViewSorting : System.Web.UI.Page
{
SqlConnection connObj = new SqlConnection();
DataSet ds = new DataSet();
SqlDataAdapter objAdapter;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
FillGrid();
}
}
private void FillGrid()
{
connObj.ConnectionString = ConfigurationManager.ConnectionStrings["DotNetTrainingConnectionString"].ToString();
connObj.Open();
SqlCommand objCommand = new SqlCommand("Select * from account", connObj);
objAdapter = new SqlDataAdapter(objCommand);
objAdapter.Fill(ds);
connObj.Close();
GridView1.DataSource = ds.Tables[0];
ViewState["dtbl"] = ds.Tables[0];
GridView1.DataBind();
}
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
{
DataTable dataTable = ViewState["dtbl"] as DataTable;
if(dataTable!=null)
{
DataView dvSortedView = new DataView(dataTable);
//string order=" asc";
dvSortedView.Sort = e.SortExpression + " " + getSortDirection(e.SortDirection);
GridView1.DataSource = dvSortedView;
GridView1.DataBind();
}
}
private string getSortDirection(SortDirection sortDirection)
{
string newSortDirection = String.Empty;
switch (sortDirection)
{
case SortDirection.Ascending:
newSortDirection = "ASC";
break;
case SortDirection.Descending:
newSortDirection = "DESC";
break;
}
return newSortDirection;
}
}
ExGridViewSorting .aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ExGridViewSorting.aspx.cs" Inherits="ExGridViewSorting" %>
<!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="GridView1" runat="server" onsorting="GridView1_Sorting" AllowSorting="true">
</asp:GridView>
</div>
</form>
</body>
</html>
ExGridViewSorting .aspx.cs
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using System.Configuration;
public partial class ExGridViewSorting : System.Web.UI.Page
{
SqlConnection connObj = new SqlConnection();
DataSet ds = new DataSet();
SqlDataAdapter objAdapter;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
FillGrid();
}
}
private void FillGrid()
{
connObj.ConnectionString = ConfigurationManager.ConnectionStrings["DotNetTrainingConnectionString"].ToString();
connObj.Open();
SqlCommand objCommand = new SqlCommand("Select * from account", connObj);
objAdapter = new SqlDataAdapter(objCommand);
objAdapter.Fill(ds);
connObj.Close();
GridView1.DataSource = ds.Tables[0];
ViewState["dtbl"] = ds.Tables[0];
GridView1.DataBind();
}
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
{
DataTable dataTable = ViewState["dtbl"] as DataTable;
if(dataTable!=null)
{
DataView dvSortedView = new DataView(dataTable);
//string order=" asc";
dvSortedView.Sort = e.SortExpression + " " + getSortDirection(e.SortDirection);
GridView1.DataSource = dvSortedView;
GridView1.DataBind();
}
}
private string getSortDirection(SortDirection sortDirection)
{
string newSortDirection = String.Empty;
switch (sortDirection)
{
case SortDirection.Ascending:
newSortDirection = "ASC";
break;
case SortDirection.Descending:
newSortDirection = "DESC";
break;
}
return newSortDirection;
}
}
