Checking file size in FileUpload

Question

Hello community,

Is this how to limit file size for two FileUpload controls?

if (FileUpload1.PostedFile.ContentLength < 102400 & Filedoc.PostedFile.ContentLength < 102400) 
{ 
string filePath = Path.GetFileName(FileUpload1.PostedFile.FileName);
string File = Path.GetFileName(Filedoc.PostedFile.FileName); 
Label1.Text = “Image Uploaded Successfully !!”; 
} 
else 
{ 
Label1.Text = “Image1 must be less than 600kb”; 
Label2.Text = "Image2 must be less than 400kb";
}

And how can I make it to accept file size of not more than 600kb for the first FileUpload control and accept size of not more than 300kb in the second fileupload?

Thank you

Answer 1

Hi @Donald Symmons,

Is this how to limit file size for two FileUpload controls?

Yes.

PostedFile.ContentLength is in bytes.

600kb=600000 Bytes

300kb=300000 Bytes

 if (FileUpload1.PostedFile.ContentLength < 600000 && Filedoc.PostedFile.ContentLength < 300000)
            {
                string filePath = Path.GetFileName(FileUpload1.PostedFile.FileName);
                string File = Path.GetFileName(Filedoc.PostedFile.FileName);
                Label1.Text = "Image Uploaded Successfully!!";
            }
            else if(FileUpload1.PostedFile.ContentLength >= 600000)
            {
                Label1.Text = "Image1 must be less than 600kb";
               
            }
            else if (Filedoc.PostedFile.ContentLength >= 300000)
            {
                Label2.Text = "Image2 must be less than 300kb";
            }

Best regards,
Lan Huang

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