Count Number of Click in C#

protected void Button_Click(object sender, EventArgs e)
    {
        Button btn = (Button)sender;
        btn.Text = (Int32.Parse(btn.Text) + 1).ToString();
    }

First ScreenShot:

Second ScreenShot:

Third ScreenShot:

<div>
    This is a demonstration of button counter. every time we click the button it is incremented.<br />
     First Counter:
    <asp:Button
        id="Button1"
        Text="0"
        OnClick="Button_Click"
        Runat="server" />       
    <br /><br />    

    Second Counter:   

    <asp:Button
        id="Button2"
        Text="0"
        OnClick="Button_Click"
        Runat="server" />       
    </div>