Catch HttpException in time when file upload exceeds size

Question

so i am making a file upload. I have, in my web.config:
<httpRuntime executionTimeout="300" maxRequestLength="5120"/>
so the file can't exceed 5MB.
My server side code looks something like:

protected void button_Click(object sender, EventArgs e) {
try {

    if (fupCV.FileName != "") {
     DirectoryInfo di = new DirectoryInfo(Server.MapPath("CVs"));
     if (!di.Exists)
         di.Create();
     fupCV.SaveAs(di.FullName + "/" + fupCV.FileName);
     //afterwards code    
    }                    
}
catch (HttpException ex) {
    Response.Write(ex.Message);                
}

}

and i can't catch the exception, i still get "Server Error in '/' Application."

Thanx for the help

VdesmedT · Accepted Answer · 2010-12-20 13:05:56Z

1

That's because the request never reach your code, IIS never passes the request to your code because it is to big.

I guess the only thing you can do is to upload via ajax and control the error code returned from your server.

answered Dec 20, 2010 at 13:05

VdesmedT

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4 Comments

André Alçada Padez Over a year ago

that's what i thought, so how can i control that the user doesn't put a file bigger than 5MBs?

VdesmedT Over a year ago

You just can't ! I guess the only thing you can do is to upload via ajax and control the error code returned from your server.

André Alçada Padez Over a year ago

well, now that some time has passed, and a miraculous solution hasn't come, i will accept your answer. Thanx

VdesmedT Over a year ago

@André : I know why no miraculous solution has come up : ain't any ! Cheers

André Alçada Padez · Accepted Answer · 2010-12-25 04:27:38Z

0

well, after stopping thinking about this, the answer came to my mind. I can set a bigger maxRequestLength in the web.config, say like 20 MBs if i want a limit of 5 MBs. And then in the submit event, after testing if the file is in the server, i can test it's size with

fupCV.FileBytes.Length

and throw an exception if it exceeds 5.000.000 bytes or so.

answered Dec 25, 2010 at 4:27

André Alçada Padez

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