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
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void DropDownList5_SelectedIndexChanged(object sender, EventArgs e)
{
}
protected void Clear_Click(object sender, EventArgs e)
{
TextBox1.Text = "";
TextBox2.Text = "";
TextBox3.Text = "";
TextBox4.Text = "";
TextBox5.Text = "";
TextBox6.Text = "";
TextBox7.Text = "";
TextBox8.Text = "";
TextBox9.Text = "";
TextBox10.Text = "";
TextBox11.Text = "";
RadioButtonList1.SelectedValue = null;
TextBox12.Text = "";
DropDownList4.SelectedValue = null;
DropDownList5.SelectedValue = null;
CheckBox1.Checked = false;
Label21.Text = "";
}
protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
{
}
protected void RadioButton1_CheckedChanged(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
SqlDataReader dr;
SqlConnection con = new SqlConnection("Data Source=SARANYA-TS02\\SQLEXPRESS;Initial Catalog=ss;Integrated Security=True");
SqlCommand cmd = new SqlCommand("insert into RegistrationForm values('" + TextBox1.Text + "','" + TextBox2.Text + "','" + TextBox3.Text + "','" + TextBox4.Text
+ "','" + TextBox5.Text + "','" + TextBox6.Text + "','" + TextBox7.Text + "','" + TextBox8.Text + "','" + RadioButtonList1.SelectedValue
+ "','" + TextBox12.Text + "','" + TextBox9.Text + "','" + TextBox10.Text
+ "','" + TextBox11.Text + "','" + DropDownList4.SelectedValue + "','" + DropDownList5.SelectedValue + "')", con);
con.Open();
cmd.ExecuteNonQuery();
SqlCommand cc = new SqlCommand("select from RegistrionForm where e-mail Address");
cc.ExecuteNonQuery();
}
protected void RadioButton2_CheckedChanged(object sender, EventArgs e)
{
}
protected void TextBox7_TextChanged(object sender, EventArgs e)
{
}
protected void TextBox2_TextChanged(object sender, EventArgs e)
{
}
protected void TextBox3_TextChanged(object sender, EventArgs e)
{
}
protected void TextBox9_TextChanged(object sender, EventArgs e)
{
}
}
this is my code i want to modify n email id... after i click submit button if that email id is already exists means i ve to throw exception.... plz help me