how to bind the table information using a Dropdown List and a Grid View. The Dropdown List fills table names of the data base. If we select an item from Dropdown List the record of selected field...

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Hi Friends help me

In this code cannot bind the table information.
Thanks in Advance

ASP.NET

<%@ 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:DropDownList ID="DropDownList1" runat="server" 
            onselectedindexchanged="DropDownList1_SelectedIndexChanged">
            <asp:ListItem>--select table--</asp:ListItem>
            <asp:ListItem>Student</asp:ListItem>
            <asp:ListItem>category</asp:ListItem>
            <asp:ListItem>logindetails</asp:ListItem>
        </asp:DropDownList>
        <asp:GridView ID="GridView1" runat="server">
        </asp:GridView>
        <br />
    </div>
    </form>
</body>
</html>

C#

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

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
       
        SqlConnection con = new SqlConnection("Data Source=VICTORIN11-PC\\SQLEXPRESS;Initial Catalog=db;Integrated Security=True");
        SqlDataAdapter da;
        DataSet ds = new DataSet();
        con.Open();
        for (int i = 0; i < DropDownList1.Items.Count; i++)
        {

            string s = "select * from " + DropDownList1.Items[1].ToString();
            da = new SqlDataAdapter(s, con);
            da.Fill(ds, DropDownList1.Items[i].ToString());

        }
    }
    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        DataSet ds = new DataSet ();
        DropDownList1.DataSource = ds.Tables[DropDownList1.SelectedIndex];
    }
}

Posted 15-Jan-13 18:17pm

Shekar Raja

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Vipin kumar.P · Answer 1 · 2013-05-27T21:39:00

Please try the following

1. Create the SP(parameter @TableName) for Pulling the table records
Example:

SQL

CREATE  PROCEDURE [dbo].[GetTableData]
(
 @TableName VARCHAR(100)
)
AS

DECLARE @SQL VARCHAR(MAX)

--Always use column name, never use '*' in select.
--SET @SQL = 'SELECT * FROM ' + @TableName;
SET @SQL = 'SELECT [COLUMN NAME1],[COLUMN NAME2],.. FROM ' + @TableName;
PRINT(@SQL);
EXEC(@SQL);

2. Pass the Selected table Name As Parameter to the SP and pull the records bind it to gridview

Himanshu__Bisht · Answer 2 · 2013-05-29T00:39:00

Hello,

You can perform this activity into two steps

1. Use the Below Query to pull out the Table Names for a Database and bind the result set to the
DropDown.

USE YourDBName
GO
SELECT Table_Name FROM INFORMATION_SCHEMA.TABLES
GO

2. On Selection of the Table name in the Dropdown, write a piece of code which fetches record from the Table selected and Bind it to the Grid.

Note : The AutoPostBack for the Drop Down must be set to True and you can write the code in the selectedIndexchanged event of the DropDown.

Hope this helps.

Regards
Himanshu

how to bind the table information using a Dropdown List and a Grid View. The Dropdown List fills table names of the data base. If we select an item from Dropdown List the record of selected field...

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