Home > ASP.Net > Validate uploaded Image Hieght and Width

Validate uploaded Image Hieght and Width


Hi

try this example to Validate uploaded Image Hieght and Width using CustomValidator control

<asp:FileUpload ID="fuFile" runat="server" />

<asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="fuFile"
  ErrorMessage="File size should not be greater than 100X100." OnServerValidate="CustomValidator1_ServerValidate"></asp:CustomValidator>

<asp:Button ID="Button1" runat="server" Text="Button" />

and in code behind:

protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
    {
        Bitmap bmIP = new Bitmap(fuFile.PostedFile.InputStream);
        if (bmIP.Width > 100 | bmIP.Height > 100)
        {
            args.IsValid = false;
        }
        else
        {
            args.IsValid = true;
        }
    }

Good Luck

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Categories: ASP.Net
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