MemberForgotPass.aspx.cs

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;

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

    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        if (txtmobile.Text == "")
        {
            ClientScript.RegisterStartupScript(Page.GetType(), "validation", "<script language='javascript'>alert('Enter MobileNo')</script>");
        }
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["db"].ConnectionString);
        con.Open();
        SqlCommand cmd = new SqlCommand("select * from MemberInfo where MobileNo =@username ", con);
        cmd.Parameters.AddWithValue("@username", txtmobile.Text);

        SqlDataAdapter da = new SqlDataAdapter(cmd);
        DataTable dt = new DataTable();

        da.Fill(dt);

        if (dt.Rows.Count > 0)
        {
            Session["MN"] = txtmobile.Text;
            Response.Redirect("MemberResetPass.aspx");
        }
        else
        {
            ClientScript.RegisterStartupScript(Page.GetType(), "validation", "<script language='javascript'>alert('Invalid MobileNo>");
        }

       


    }

    protected void Button2_Click(object sender, EventArgs e)
    {
        Response.Redirect("MemberLogin.aspx");
    }
}