Question

protected void Application_BeginRequest(object sender, EventArgs e)
    {


        const int maxFileSizeKBytes = 10240; //10 MB
        const int maxRequestSizeKBytes = 305200; //~298 MB

        if (Request.ContentLength > (maxRequestSizeKBytes * 1024))
        {
            Response.Redirect(".aspx?requestSize=" + Request.ContentLength.ToString());
        }


        for (int i = 0; i < Request.Files.Count; i++)
        {
            if (Request.Files[i].ContentLength > (maxFileSizeKBytes * 1024))
            {
                Response.Redirect(".aspx?fileSize=" + Request.Files[i].ContentLength.ToString());
            }
        }

    }

This code is in Global.asax.cs page.
I need to redirect to the page that triggered this check. And I need to know the ticketId or projectId parameter. For example I create new ticket at the View Project page /Project/ViewProject.aspx?projectId=1 I need to redirect to this page with a meaningful message to the user, because I think that redirecting to another page to display the error message is not a good idea.

Answer 1

Why don’t you put these checks in the Load handler of a base Page class that ViewProject (and anything else needing the checks) derives from? Then you can just make an error Label visible if the check fails. Untested code:

public class BasePage : Page{
  protected virtual Label ErrorLabel { get; set; };
  protected override OnLoad(object sender, EventArgs e) {
    base.OnLoad(sender, e);

    const int maxFileSizeKBytes = 10240; //10 MB
    const int maxRequestSizeKBytes = 305200; //~298 MB

    if (Request.ContentLength > (maxRequestSizeKBytes * 1024))
    {
        ErrorLabel.Text = "Request length "+Request.ContentLength+" was too long."
        ErrorLabel.Visible = true;
    }


    for (int i = 0; i < Request.Files.Count; i++)
    {
        if (Request.Files[i].ContentLength > (maxFileSizeKBytes * 1024))
        {
            ErrorLabel.Text = "File length "+ Request.Files[i].ContentLength +" was too long."
            ErrorLabel.Visible = true;
        }
    }
  }
}

public class ViewProject : BasePage {
  protected override Label ErrorLabel {
    get { return LocalErrorLabel; } // something defined in HTML template
    set { throw new NotSupportedException(); }
  }
}

This way you stay on the same page and you already have ticketId and projectId.