How to check your password and id match or not in Database
- source :
<%@ 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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
id
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<br />
<br />
password
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<br />
<br />
<br />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="login" />
</div>
</form>
</body>
</html>
default.aspx.cs
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 _Default : System.Web.UI.Page
{
SqlConnection con;
SqlCommand com;
SqlDataAdapter da;
DataTable dt;
string str;
protected void Page_Load(object sender, EventArgs e)
{
str = @"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\alex\Documents\Visual Studio 2010\WebSites\passandid\App_Data\Database.mdf;Integrated Security=True;User Instance=True";
con = new SqlConnection(str);
con.Open();
}
protected void Button1_Click(object sender, EventArgs e)
{
com = new SqlCommand("select * from data where id='"+TextBox1.Text+"' and password='"+TextBox2.Text+"'",con);
com.ExecuteNonQuery();
da = new SqlDataAdapter(com);
dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count == 1)
{
Response.Write("id and password match");
}
else
{
Response.Write("id and password not match");
}
}
}
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