In this blog we will know how to retrieve the related data
from database into textbox's when we provide one data in the textbox and press
submit button.
<%@ Page Language="C#" AutoEventWireup="true"
CodeFile="Default.aspx.cs"
Inherits="_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:Label ID="Label1" runat="server"
Text="REGDNO"
Width="100px"></asp:Label>
<asp:TextBox ID="TextBox1"
runat="server"></asp:TextBox><br />
<asp:Label ID="Label2" runat="server"
Text="NAME"
Width="100px"></asp:Label>
<asp:TextBox ID="TextBox2"
runat="server"></asp:TextBox><br />
<asp:Label ID="Label3" runat="server"
Text="BRANCH"
Width="100px"></asp:Label>
<asp:TextBox ID="TextBox3"
runat="server"></asp:TextBox><br />
<asp:Label ID="Label4" runat="server"
Text="ADDRESS"
Width="100px"></asp:Label>
<asp:TextBox ID="TextBox4"
runat="server"></asp:TextBox><br />
<asp:Label ID="Label5" runat="server"
Text="PHNO"
Width="100px"></asp:Label>
<asp:TextBox ID="TextBox5"
runat="server"></asp:TextBox><br />
<asp:Label ID="Label6" runat="server"
Text="STATE"
Width="100px"></asp:Label>
<asp:TextBox ID="TextBox6"
runat="server"></asp:TextBox><br />
<asp:Button ID="Button1"
runat="server"
Text="Retrive
data"
onclick="Button1_Click" />
<asp:Label ID="lbl1" runat="server"
BackColor="Black"
Font-Bold="True"
ForeColor="Red"></asp:Label>
</div>
</form>
</body>
</html>
using System;
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;
public partial
class _Default
: System.Web.UI.Page
{
string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
SqlCommand com;
string str;
protected void Button1_Click(object
sender, EventArgs e)
{
clear();
idcheck();
SqlConnection con = new SqlConnection(connStr);
con.Open();
str = "select * from std
where REGDNO='" + TextBox1.Text.Trim() + "'";
com = new SqlCommand(str, con);
SqlDataReader reader =
com.ExecuteReader();
if (reader.Read())
{
TextBox2.Text =reader["NAME"].ToString();
TextBox3.Text = reader["BRANCH"].ToString();
TextBox4.Text = reader["ADDRESS"].ToString();
TextBox5.Text = reader["PHNO"].ToString();
TextBox6.Text = reader["STATE"].ToString();
reader.Close();
con.Close();
}
}
public void
idcheck()
{
SqlConnection con = new SqlConnection(connStr);
con.Open();
str = "select count(*)from
std where REGDNO='" + TextBox1.Text + "'";
com = new SqlCommand(str, con);
int count = Convert.ToInt32(com.ExecuteScalar());
if (count > 0)
{
lbl1.Text = "Id
Exist";
}
else
{
lbl1.Text = "Id Does
not Exist";
}
}
void clear()
{
TextBox2.Text = "";
TextBox3.Text = "";
TextBox4.Text = "";
TextBox5.Text = "";
TextBox6.Text = "";
}
}