problem in gridview data-bind .

Question

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Hi .
I have a SqlDataSource in my aspx page and it had a default Select query . i used a Gridview for show the data in SqlDataSource and enabled paging . everything is OK .

But when i change Select query of datasource from code-behind and then Bind gridview , data doesn't change in all page . only current page data change and when navigate between other pages OLD query data seen again.

Where is problem ?

ASP.Net Code :

ASP.NET

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

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:test1ConnectionString %>" OnSelecting="SqlDataSource1_Selecting" SelectCommand="SELECT        quran_simple.text, trjm_fa_ayati.tr AS Expr5
FROM            trjm_fa_ayati INNER JOIN
                         quran_simple ON trjm_fa_ayati.ID = quran_simple.id"></asp:SqlDataSource>
    
    </div>
        <br />
        <asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False" DataSourceID="SqlDataSource1">
            <Columns>
                <asp:BoundField DataField="text" HeaderText="text" SortExpression="text" />
                <asp:BoundField DataField="Expr5" HeaderText="Expr5" SortExpression="Expr5" />
            </Columns>
        </asp:GridView>
        <br />
        <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">
            <asp:ListItem>Test1</asp:ListItem>
            <asp:ListItem>Test2</asp:ListItem>
            <asp:ListItem>Test3</asp:ListItem>
        </asp:DropDownList>
        <br />
        <br />
    </form>
</body>
</html>

C# Code :

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Query;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        

    }

    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        switch (DropDownList1.SelectedIndex)
        {
            case 0:
                SqlDataSource1.SelectCommand = "SELECT quran_simple.text, trjm_fa_moezzi.tr AS Expr5 FROM  trjm_fa_moezzi INNER JOIN quran_simple ON trjm_fa_moezzi.ID = quran_simple.id";
                GridView1.DataBind();
                break;

            case 1:
                SqlDataSource1.SelectCommand = "SELECT quran_othmani.text, trjm_fa_makarem.tr AS Expr5 FROM  trjm_fa_makarem INNER JOIN quran_othmani ON trjm_fa_makarem.ID = quran_othmani.id";
                GridView1.DataBind();
                break;

            case 2:
                SqlDataSource1.SelectCommand = "SELECT quran_othmani.text, trjm_fa_moezzi.tr AS Expr5 FROM  trjm_fa_moezzi INNER JOIN quran_othmani ON trjm_fa_moezzi.ID = quran_othmani.id";
                GridView1.DataBind();
                break;

            default:
                break;
        }
    }
}

Posted 3-Aug-13 9:56am

unforgiven.1791

Updated 3-Aug-13 11:01am

v2

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Comments

Srinivas Kalabarigi 3-Aug-13 16:06pm

Can you show us the code?

[no name] 3-Aug-13 16:07pm

You expect someone to tell you what is wrong with your code without seeing it?

unforgiven.1791 3-Aug-13 17:01pm

Sorry for That - code's added .

1 solution

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Zafar A khan · Accepted Answer · 2013-08-03T23:27:00

Solution 1

implement the page_indexchanging Event of gridview
and call selectedchanged of dropdownlist

C#

protected void GridView1_PagIndexchangin(object sender, GridViewPageEventArgs e)
{
DropDownList1_SelectedIndexChanged(null,null)
}

Posted 3-Aug-13 23:27pm

Zafar A khan

Comments

unforgiven.1791 4-Aug-13 12:58pm

Thank's. It work . Can say what this code do ?