We can use the Java Script to check whether the file uploaded is of 2003 or 2007 word format. Hence we can handle the validation in the client side.
Java Script
<script type="text/javascript" language="javascript">
function FileFormatValidate()
{
var uploadControl = document.getElementById('<%=FileUpload1.ClientID%>').value;
//Regular Expression for the fileupload control.
var reg = /^(([a-zA-Z]:)|(file://%7b2%7d/w )/$?)(//(/w[/w].*)) (.doc|.docx|.DOC|.DOCX)$/;
//Checking if the file is empty or not
if (uploadControl.length > 0)
{
//Checks with the control value.
if (reg.test(uploadControl))
{
return true;
}
else
{
//If the condition not satisfied shows error message.
alert("Only .doc, docx files are allowed!");
return false;
}
}
else
{
//If the File is Empty or No File is selected to upload shows this
error message.
alert("Please select a file to Upload");
return false;
}
} //End of function FileFormatValidate.
</script>
Design
<p style="height: 28px; width: 216px">
<asp:Button ID="btn_Upload" runat="server" Height="25px"
onclick="btn_Upload_Click" OnClientClick="return FileFormatValidate();" Text="Upload" Width="128px" />
</p>Hence you can validate and check the file being uploaded at the client side using this code. This can be re-used for any file formats by changing the Regular Expression.
Happy Coding!!!
Happy Coding!!!
