how to show the database values in textbox

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I have one dropdownlist and one textbox.
I have two fields viz accno and cust_name in my table. I show the acc no in dropdownlist.Now i have to select value from dropdownlist as accno and show the cust_name of the selected acc no in the textbox.how to show?
Plz help me

Posted 7-Apr-13 1:39am

amu jamdade

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3 solutions

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Deependra Khangarot · Answer 1 · 2013-04-07T04:05:00

Just bind the dropdownlst with the datasource having the both columns.

C#

dropdownlistName.DataTextField = "accno";
dropdownlistName.DataValueField = "cust_name";
dropdownlistName.DataSource = yourDataSource;
dropdownlistName.DataBind();

Use dropdownlist's selectedindex changed method to get cust_name in textbox.

Don't forget to set autopostback property of dropdownlist to true.

3796068 · Answer 2 · 2013-04-07T18:55:00

XML

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

<!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:DropDownList ID="DropDownList1" runat="server">
        </asp:DropDownList><br />
        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label><br />
        <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>

    </div>

    <asp:Button ID="btn_search" runat="server" onclick="btn_search_Click"
        Text="Search" />

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

using System;
using System.Collections;
using System.Configuration;
using System.Data;
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;
using System.Data.SqlClient;
namespace Dropdownlist_click_data_in_textbox
{
public partial class _Default : System.Web.UI.Page
{
string strConnString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
string str;
SqlCommand com;

protected void Page_Load(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(strConnString);
if (!IsPostBack)
{
DropDownList1.Items.Add("Choose name");
con.Open();
str = "select * from employee";
com = new SqlCommand(str, con);
SqlDataReader reader = com.ExecuteReader();
while (reader.Read())
{
DropDownList1.Items.Add(reader["empname"].ToString());
}
reader.Close();
con.Close();
}

}

private void clear()
{
Label1.Text = "";
Label2.Text = "";
}

protected void btn_search_Click(object sender, EventArgs e)
{
clear();
SqlConnection con = new SqlConnection(strConnString);
con.Open();
str = "select * from employee where empname='" + DropDownList1.SelectedItem.Text + "'";
com = new SqlCommand(str, con);
SqlDataReader reader = com.ExecuteReader();
while (reader.Read())
{
Label1.Text = reader["empaddress"].ToString();
Label2.Text = reader["sal"].ToString();
}
reader.Close();
con.Close();
}
}
}

3796068 · Answer 3 · 2013-04-07T19:01:00

using System;
using System.Collections;
using System.Configuration;
using System.Data;
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;
using System.Data.SqlClient;
namespace Dropdownlist_click_data_in_textbox
{
public partial class _Default : System.Web.UI.Page
{
string strConnString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
string str;
SqlCommand com;
protected void Page_Load(object sender, EventArgs e)
{
DropDownList1.AutoPostBack = true;
SqlConnection con = new SqlConnection(strConnString);

if (!IsPostBack)
{
DropDownList1.Items.Add("Choose id");
con.Open();
str = "select * from test";
com = new SqlCommand(str, con);
SqlDataReader reader = com.ExecuteReader();
while (reader.Read())
{
DropDownList1.Items.Add(reader["id"].ToString());
}
reader.Close();
con.Close();
}
}

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(strConnString);
con.Open();
str = "select * from test where id='" + DropDownList1.SelectedItem.Text + "'";
com = new SqlCommand(str, con);
SqlDataReader reader = com.ExecuteReader();
while (reader.Read())
{
TextBox1.Text = reader["name"].ToString();

}
reader.Close();
con.Close();
}
}
}

how to show the database values in textbox

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