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I tried my level best to adopt a required field validator for my FileUpload. It is not working. Can anyone guide me please.
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Posted 12-May-13 6:19am
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Solution 1

Input (File) is an HTML control, so you will need to run it as a server control and then validate it on the code-behind. If you don't want to set it a server control, you can validate it using JavaScript/jQuery in the client-side.
For instance,
var fileUpload = $("*[id$='fileUpload ']").val();
if(fileUpload == ""){
//Do your validation here
}
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Solution 2

Hi...
see this may helpful to u.
 
             if (!fileupload.HasFile)
            {
                lbl.Visible = true;
                lbl.ForeColor = Color.Red;
                lbl.Text = "Please Select file";    //checking if file uploader has no file selected
            }
            else
            {
                //Continue
                // if file is selected. 
            }
 
thank u.
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Solution 3

Required filed validator wont work
check whether it has file or not using
FileUpload1.HasFile
or
!(FileUpload1.PostedFile.ContentLength>0)
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