how we get pop up message in .net

If ClientScript.RegisterStartupScript not working then try ClientScript.RegisterClientScriptBlock .

It should work!

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Alternatively you can use AJAX ModalPopupExtender to show PopUps in Web applications. Refer the following link to know the usage of ModalPopupExtender.
http://www.aspdotnet-suresh.com/2011/12/ajax-yesno-button-options-customized.html

By using ClientScript.RegisterOnSubmitStatement
-- On page load

protected void Page_Load(object sender, EventArgs e)

{

  string message = "Do you want to Submit?";

  System.Text.StringBuilder sb = new System.Text.StringBuilder();

  sb.Append("return confirm('"); 

  sb.Append(message);

  sb.Append("');");

  ClientScript.RegisterOnSubmitStatement(this.GetType(), "alert", sb.ToString());

}

Using ClientScript.RegisterClientScriptBlock
// on Button click

protected void Button1_Click(object sender, EventArgs e)

{

  string message = "Order Placed Successfully.";

  System.Text.StringBuilder sb = new System.Text.StringBuilder();

  sb.Append("<script type = 'text/javascript'>");

  sb.Append("window.onload=function(){");

  sb.Append("alert('");

  sb.Append(message);

  sb.Append("')};");

  sb.Append("</script>");

  ClientScript.RegisterClientScriptBlock(this.GetType(), "alert", sb.ToString());

}

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--
Chandu
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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;

namespace WebApplication16
{
public partial class WebForm9 : System.Web.UI.Page
{
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = TextBox1.Text;
ClientScriptManager csm = Page.ClientScript;
csm.RegisterStartupScript(this.GetType(), "showalert", "alert('Data Saved Successfully.')", true);
}
}
}

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Thanks

Manbkp, if this helps please login to Mark As Answer. | Alert Moderator

HI,
try this it might be helpful to you
Response.Write("<script>alert('your data dded successfully')</script>");

Mark as Answer if it helps you
Thanks&Regards
Aswini Aluri

Manbkp, if this helps please login to Mark As Answer. | Alert Moderator

The other way to show popup is as follows:-

protected void Page_Load(object sender, EventArgs e)
{
Button1.Attributes.Add("onclick", "javascript:alert('Data Saved Successfully.')");
}

Happy coding.

Manbkp, if this helps please login to Mark As Answer. | Alert Moderator

U need to understand how to call JavaScript functions from Code Behind.
http://www.encodedna.com/2012/11/call-javascript-codebehind.htm

Since pop up messages are fired at the client side, so you need to a client script which show the message.

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