ASP.NET file size validator not validating

Question

So I have a few ASP.NET file upload controls in my aspx file -

 <asp:FileUpload ID="fulNature" class="form-control summer" runat="server" /><asp:Labe ID="lblNature" runat="server" Text="Label" Visible="false"></asp:Label>
 <asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="fulNature" Display="Dynamic"
                        ErrorMessage="File size should not be greater than 1 MB." ForeColor="#FF3300" OnServerValidate="ValidateFileSize"></asp:CustomValidator>

<asp:FileUpload ID="fulIndustrial" class="form-control summer" runat="server" /><asp:Label ID="lblIndustrial" runat="server" Text="Label" Visible="false"></asp:Label>
<asp:CustomValidator ID="CustomValidator2" runat="server" ControlToValidate="fulIndustrial" Display="Dynamic"
                        ErrorMessage="File size should not be greater than 1 MB." ForeColor="#FF3300" OnServerValidate="ValidateFileSize"></asp:CustomValidator>

I'm trying to limit file size with one C# validator -

protected void ValidateFileSize(object source, ServerValidateEventArgs args)
{
    var validator = (source as CustomValidator);
    string controlToValidate = validator.ControlToValidate;
    FileUpload SubmittedUpload = validator.NamingContainer.FindControl(controlToValidate) as FileUpload;

    if (SubmittedUpload.FileBytes.Length > 1048576) //  A little padding added.
    {
        args.IsValid = false;
    }
    else
    {
        args.IsValid = true;
    }
}

The issue is that the validator never fires regardless of file size. I have to be missing something simple here, but I'm just not seeing it.

I should have mentioned - the file uploader validator is being used by multiple controls. I edited my question to reflect that. — user3756683
– user3756683, Commented Sep 9, 2014 at 13:12

James · Accepted Answer · 2014-09-09 12:54:35Z

1

you can directly get the size of uploaded file:

long size=fulNature.FileContent.Length;

answered Sep 9, 2014 at 12:54

James

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1 Comment

freefaller Over a year ago

How is this different from the answer submitted 6 minutes ago?

Tim Schmelter · Accepted Answer · 2014-09-09 22:27:16Z

0

Try:

long filesize = SubmittedUpload.FileContent.Length;

edited Sep 9, 2014 at 22:27

answered Sep 9, 2014 at 12:48

Tim Schmelter

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