Required Fileupload validation using javascript

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Hi Friends,

I have a webpage with controls in it. This is a registration form.

Here, i want to validate Upload control using javascript.

I want to upload only PDF Files not other than these.

This is my Javascript code.

XML

<script type="text/javascript">
        function Validate() {
            var txt1 = document.getElementById('TxtName');
            var txt2 = document.getElementById('DDLReason');
            var txt3 = document.getElementById('DDLCondition');
            var uploadfile = document.getElementById('FileUploadTurnInRequest');

            if(txt1.value == '')
            {
                alert('Please enter Name');
                return false;
            }

             if(uploadfile.value == '')
            {
                alert('Please upload the attachment');
                return false;
            }


if(document.getElementById('<%=DDLReason.ClientID%>').selectedIndex == 0)
{
alert("Please Select Reason");
return false;
}

if(document.getElementById('<%=DDLcondition.ClientID%>').selectedIndex == 0)
{
alert("Please Select Condition");
return false;
}
 else
  {
  return confirm('Are you Sure, you want to Submit ?')
  }
    }
    </script>

Button
------

SQL

<asp:ImageButton ID="btnUpdate" runat="server" CausesValidation="true"
                                                                   ImageUrl="~/User/Images/Submit1.png" Width="180px" 
                                                                    Height="40px" OnClientClick="javascript:return Validate()"
                                                                   onclick="btnUpdate_Click"/>

Here, Just i need Validation using Javascript, Only to Upload PDF Files.

Please help

Posted 16-Dec-13 19:20pm

Member239258

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sankarsan parida · Answer 1 · 2013-12-16T19:28:00

C#

function validation(thisform)
{
   with(thisform)
   {
      if(validateFileExtension(file, "valid_msg", "pdf files are only allowed!",
      new Array("pdf")) == false)
      {
         return false;
      }
      if(validateFileSize(file,1048576, "valid_msg", "Document size should be less than 1MB !")==false)
      {
         return false;
      }
   }
}

how-to-validate-upload-file-size-and-file-extension-using-javascript/[^]
how-do-i-validate-the-file-type-of-a-file-upload[^]

TrushnaK · Answer 2 · 2013-12-16T19:53:00

try this:-

C#

var uploadfile = document.getElementById('FileUploadTurnInRequest');

if (uploadfile .value.match(/pdf$/) || uploadfile .value.match(/PDF$/))
{
    return true;
}
else{return false;}

refer below links:-
http://stackoverflow.com/questions/71944/how-do-i-validate-the-file-type-of-a-file-upload[^]
http://stackoverflow.com/questions/190852/how-can-i-get-file-extensions-with-javascript[^]

**Nirav Prabtani** · Answer 3 · 2013-12-16T20:37:00

try this..:)

XML

<asp:FileUpload ID="flUpld" runat="server" />

                <asp:RegularExpressionValidator
                    id="RegularExpressionValidator1" runat="server"
                    ErrorMessage="Only PDF files are allowed!"
                    ValidationExpression="^(([a-zA-Z]:)|(\\{2}\w+)\$?)(\\(\w[\w].*))(.pdf|.PDF)$"
                    ControlToValidate="flUpld" CssClass="text-red"></asp:RegularExpressionValidator>

or

http://codingboys.blogspot.co.nz/2012/04/to-upload-pdf-files-only-using-aspnet.html[^]

http://www.aspdotnet-suresh.com/2010/12/how-to-validate-file-type-in-file.html[^]

Required Fileupload validation using javascript

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