ASP .NET Button event handlers do not fire on the first click, but on the second click after a PostBack

Question

Background: I am customizing an existing ASP .NET / C# application. It has it\'s own little \"framework\" and conventions for developers to follow when exte

Answer 1

Even i had the same problem. the cause was "localhost:1656/secure/login.aspx?ReturnUrl=%2f". if the request contain %2f as query string, the first post will not be succeeded even though "%2f" is representing "/".

one way to avoid this by having a condition check in pageload

protected void Page_Load(object sender, EventArgs e)
{
    string queryString = Request.QueryString.ToString();
    if(queryString == "ReturnUrl=%2f")
    {
        Response.Redirect("/secure/login.aspx");
    }
}