I am implementing a gridRowLayout. Inside the gridRowLayout I am implementing a fileUpload field.
So that I can add a new row dynamically and for each row I can upload 1 document.
But the demand here is ... I cant upload same files again and again (i.e. I cant upload same files in different rows) . But I am not quite sure how to do the validation for it. Can anyone help me with this ?
This validation I have added for fileName. But as you see I could upload same files. I need validation to say that File Already Uploaded. Is there a way to do this validation ?
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