Limiting Required Field Validator to One Set of Controls (ASP.NET)

Question

I have a Required field validator attached to a fileupload control. When the user hits the insert button to insert the image into an html editor next to the control the validator fires off if nothing was in the fileupload text box. That works fine; however, when the save button at the bottom of the page is clicked it fires off the required validator if the fileupload control is empty. What i must I do so that validator can only fire off on the click of the insert button?

MORE POINTS IF THIS IS ANSWERED CORRECTLY:

What if I want a button to be apart of more than one validation group???

Answer 1

Is the ValidationGroup of the SaveButton the same as the validator? This would cause this error.

Answer 2

Most controls have a boolean property called "CausesValidation". If you set this to false for controls that you wish to interact with without them firing the validators, it should solve the problem.

Answer 3

You could specify a validation group.

For example:

In your RequiredFieldValidator set ValidationGroup="Upload"

In your insert button specify the ValidationGroup to be Upload but don't specify a ValidationGroup on the Save button.