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Oct 06

Highlight a Row in GridView without a postback using ASP.NET and JavaScript

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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridViewSelect.aspx.cs"
Inherits="GridViewSelect" %>

<!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>Untitled Page</title>
</head>
<body>
  <form id="form1" runat="server">
  <div>
      <asp:GridView ID="GridView1" runat="server"
OnRowCreated="GridView1_RowCreated">
      </asp:GridView>

  </div>
  </form>
</body>
</html>


using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class GridViewSelect : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
      if (!IsPostBack)
      {
          if (Session["dtTemp"] != null)
          {
              GridView1.DataSource = Session["dtTemp"] as DataTable;

              GridView1.DataBind();
              this.DataBind();

          }
          else
          {
              GridView1.DataSource = GetCustomMadeDataTable();
              GridView1.DataSource = GetCustomMadeDataTable();
              this.DataBind();

          }
      }

  }
  protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
  {
      e.Row.Attributes.Add("onMouseOver", "this.style.background='#eeff00'");
      e.Row.Attributes.Add("onMouseOut", "this.style.background='#ffffff'");
  }

  public DataTable GetCustomMadeDataTable()
  {

      //Create a new DataTable object

      System.Data.DataTable objDataTable = new System.Data.DataTable();

      //Create three columns with string as their type

      objDataTable.Columns.Add("Id", typeof(string));
      objDataTable.Columns.Add("FirstName", typeof(string));
      objDataTable.Columns.Add("LastName", typeof(string));
      objDataTable.Columns.Add("Address", typeof(string));
      objDataTable.Columns.Add("Email", typeof(string));
      DataRow dr;
      //Adding some data in the rows of this DataTable
      for (int i = 0; i <= 50; i++)
      {
          dr = objDataTable.NewRow();
          dr[0] = i.ToString();
          dr[1] = "FirstName" + i.ToString();
          dr[2] = "LastName" + i.ToString();
          dr[3] = "Address" + i.ToString();
          dr[4] = "Email" + i.ToString();
          objDataTable.Rows.Add(dr);

      }

      DataColumn[] dcPk = new DataColumn[1];
      dcPk[0] = objDataTable.Columns["Id"];
      objDataTable.PrimaryKey = dcPk;
      Session["dtTemp"] = objDataTable;
      return objDataTable;
  }
}

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