Here's a simple ASP.NET Web Forms example for counting the number of times a webpage is submitted to the server using the OnClick event of a button.

ASPX Code (Counter.aspx)

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Counter.aspx.cs" Inherits="Counter" %>

<!DOCTYPE html>

<head>

<title>Page Submission Counter</title>

</head>

<body>

<div>

<asp:Button ID="CountButton" runat="server" Text="Submit" OnClick="CountButton_Click" />

<asp:Label ID="CountLabel" runat="server" Text="Page has been submitted 0 times."></asp:Label>

</div>

</form>

</body>

</html>

Code-Behind (Counter.aspx.cs)

using System;

public partial class Counter : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

// If this is the first time the page is loaded, initialize the counter

if (!IsPostBack)

{

ViewState["SubmitCount"] = 0;

}

}

protected void CountButton_Click(object sender, EventArgs e)

{

// Increment the count

int count = (int)ViewState["SubmitCount"];

count++;

ViewState["SubmitCount"] = count;

// Update the label text

CountLabel.Text = "Page has been submitted " + count + " times.";

}

}

Explanation:

1. ViewState is used to maintain the counter value across postbacks. It ensures the count is preserved between different button clicks.

2. Page_Load checks if the page is being loaded for the first time (!IsPostBack). If so, the counter is initialized to zero.

3. CountButton_Click increments the counter stored in ViewState and updates the label to reflect the current number of submissions.

This simple application demonstrates how to track the number of times a button click submits the page to the server.

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