function validatefileupload(Source, args) { var fuData = document.getElementById('<%= FileUpload1.ClientID %>'); var FileUploadPath = fuData.value; if(FileUploadPath =='') { // There is no file selected args.IsValid = false; } else { var Extension = FileUploadPath.substring(FileUploadPath.lastIndexOf('.') + 1).toLowerCase(); if (Extension == "jpg" || Extension == "gif" || Extension=="png" || Extension=="jpeg") { args.IsValid = true; // Valid file type } else { args.IsValid = false; // Not valid file type } } }
debugger;
var
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