Validate Textbox using javascript while register

Satyapriyanayak
Posted by Satyapriyanayak under ASP.NET category on | Points: 40 | Views : 963
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Validate_Textbox_using_javascript.WebForm1" %>

<!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>
<script language="javascript" type="text/javascript">
function validate()
{
if (document.getElementById("<%=txt_name.ClientID%>").value=="")
{
alert("Name Feild can not be blank");
document.getElementById("<%=txt_name.ClientID%>").focus();
return false;
}
return true;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="txt_name" runat="server"></asp:TextBox>
<asp:Button ID="btn_register" runat="server" OnClientClick ="javascript:validate()"
Text="Register" onclick="btn_register_Click"/>
<asp:Label ID="lblmsg" runat="server" Text="Label"></asp:Label>
</div>
</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 Validate_Textbox_using_javascript
{
public partial class WebForm1 : System.Web.UI.Page
{
string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
SqlCommand com;

protected void btn_register_Click(object sender, EventArgs e)
{
if (txt_name.Text == "")
{
txt_name.Focus();
}

else
{
SqlConnection con = new SqlConnection(connStr);
com = new SqlCommand();
com.Connection = con;
com.CommandType = CommandType.Text;
com.CommandText = "insert into test values(@name)";
com.Parameters.Clear();
com.Parameters.AddWithValue("@name", txt_name.Text);

if (con.State == ConnectionState.Closed)
con.Open();
com.ExecuteNonQuery();
con.Close();
lblmsg.Text = "Data entered successfully!!!";
}
}
}
}

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