<script type="text/javascript"> // var validFilesTypes = ["bmp", "gif", "png", "jpg", "jpeg", "doc", "xls"]; var validFilesTypes = ["xls", "xlsx"]; function ValidateFile() { var file = document.getElementById("<%=FileUpload2.ClientID%>"); var label = document.getElementById("<%=Label1.ClientID%>"); var path = file.value; var ext = path.substring(path.lastIndexOf(".") + 1, path.length).toLowerCase(); var isValidFile = false; for (var i = 0; i < validFilesTypes.length; i++) { if (ext == validFilesTypes[i]) { isValidFile = true; break; } } if (!isValidFile) { $(function ShowPopup(message) { $(function () { var message = "Invalid File. Please upload a File with" + " extension:\n\n" + validFilesTypes.join(", "); $("#dialog").html(message); $("#dialog").dialog({ title: "Error", buttons: { Close: function () { $(this).dialog('close'); } }, modal: true }); }); }); label.style.color = "red"; label.innerHTML = "Invalid File. Please upload a File with" + " extension:\n\n" + validFilesTypes.join(", "); } return isValidFile; } </script> <script type="text/javascript"> $(function ValidatePg() { var ToEmail = document.getElementById('<%=TxtTO.ClientID %>').value; var Subject = document.getElementById('<%=TxtSubject.ClientID %>').value; if (TxtTO == "") { alert("No Email id Choosen, Please Enter Email ID"); document.getElementById('<%=TxtTO.ClientID %>').focus(); return false; } if (TxtSubject == "") { var message = "EnterSubject"; ShowPopup(message); alert("EnterSubject"); document.getElementById('<%=TxtSubject.ClientID %>').focus(); return false; } label.style.color = "red"; label.innerHTML = "Invalid File. Please upload a File with"; }); </script> <asp:Button ID="Btn_Send" CssClass="myButton" runat="server" Text="Send" OnClick="Btn_Send_Click" OnClientClick="return ValidatePg()"/>