How to display the message after redirecting the page

Why you are re-directing to same page, though you are saving the data in the same page..?? I think No need of redirecting to same page.

by the way, you can display the message either of the two ways.

Method I: using message box.

string strJscript = "<script language='javascript'> alert('Details are saved successfully');</script>";

Page.CLientScript.RegisterClientScriptBlock(this,this.GetType(),"Myscript",strJscript,false);

method II:
keep one Label and display message as Label Text.

Label1.Text="Details are saved sucessfully";

hope this helps..

protected void Page_Load(object sender, EventArgs e)
{
    // First time logic
    if (!IsPostBack)
    {
        Response.Write("U r success message");
    }
}

Try this,

Pass querystring while redirecting..

Response.Redirect("Default.aspx?mess=true");

In Default.aspx.cs page load

Then check it in page load event of that page.

protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.QueryString["mess"] != null)
        {
            Response.Write("<script>alert('Message savedsuccessfully');</script>");
        }
    }

use scriptmanager to call javascript

ScriptManager.RegisterStartupScript(this, this.GetType(), "*&^%", "alert('Invoice has been submitted successfully');", true);

if you have any queries then tell me.

To make your web application efficient you can add one class named MessageBox in your AppCode folder.
please cheak this link
www.codeproject.com/KB/webforms/AspNetMsgBox.aspx[^]

Hello,

When you save details and redirect to same page then you just write code like this,

if (SaveDetails())
        {
            Session["sucmsg"] = "msg";
            Response.Redirect("~/MypagePath.aspx");
        }

You can use javascript at loadtime here with session. The secure way here is use session whenever you redirect to page. After at load time you just put code like this,

if (!IsPostBack)
{
    if (Session["sucmsg"] != null)
    {
         ScriptManager.RegisterStartupScript(this, this.GetType(), "msg", "alert('Invoice has been submitted successfully');", true);
         Session.Remove("sucmsg");
     }
}

In this way you can show msg and also remove session. You can also pass any secure message to session. But make sure to remove session variable.

I will be back if any query.