在ASP.NET UserControls中捕获未处理的异常

protected void Application_Error(object sender, EventArgs e)
{
    Exception ex = Server.GetLastError();
    // 处理异常
}

protected void Application_Error(object sender, EventArgs e)
{
    Exception ex = Server.GetLastError();
    HttpException httpEx = ex as HttpException;
    if (httpEx != null && httpEx.ErrorCode == -2147467259)
    {
        // 来自UserControl的异常
    }
    // 处理异常
}

protected void Application_Error(object sender, EventArgs e)
{
    Exception ex = Server.GetLastError();
    HttpException httpEx = ex as HttpException;
    if (httpEx != null && httpEx.ErrorCode == -2147467259)
    {
        // 来自UserControl的异常
        Server.ClearError();
        Response.Redirect("ErrorPage.aspx");
    }
    // 处理异常
}

protected void Application_Error(object sender, EventArgs e)
{
    Exception ex = Server.GetLastError();
    HttpException httpEx = ex as HttpException;
    if (httpEx != null && httpEx.ErrorCode == -2147467259)
    {
        // 来自UserControl的异常
        Elmah.ErrorSignal.FromCurrentContext().Raise(ex);
        Server.ClearError();
        Response.Redirect("ErrorPage.aspx");
    }
    // 处理异常
}