Validation for FileUpload control

10y1.8k.NET

I need to make validation message for file upload when a user click on the button without uploading file the error message appears

This the code I have tried but it is not working

ID="RequiredFieldValidator11" ForeColor="Red" ControlToValidate="FileUpload1"

runat="server" ValidationGroup="click" SetFocusOnError="true" />

Please help

3 Replies

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Rajeesh Menoth10y ago
Accepted answer
Hi,

Try this..
<asp:FileUpload ID="FileUpload1" runat="server" />
<br />
<asp:RequiredFieldValidator ErrorMessage="Required" ControlToValidate="FileUpload1"
    runat="server" Display="Dynamic" ForeColor="Red" />
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" ValidationExpression="([a-zA-Z0-9\s_\\.\-:])+(.doc|.docx|.pdf)$"
    ControlToValidate="FileUpload1" runat="server" ForeColor="Red" ErrorMessage="Please select a valid Word or PDF File file."
    Display="Dynamic" />
<br />
<asp:Button Text="Submit" runat="server" />
Reference :

http://www.aspsnippets.com/Articles/Validate-FileUpload-Control-using-Regular-Expression-and-RegularExpression-Validator-in-ASPNet.aspx

http://www.c-sharpcorner.com/UploadFile/99bb20/validation-for-file-upload-control-in-Asp-Net/
10y ago
Thanks guys
It works fine with display dymanic and star sing but not on the same line with file upload icon I tried to use style display inline but still not working I need to to display error message in front of the incon like with textbox
Vasanth Natarajan10y ago
Hi.,
Just remove the and include the ^* its working Fine i check it
OnLoad="FileUpload1_Load"/>

^*

ID="RequiredFieldValidator11" ForeColor="Red" ControlToValidate="FileUpload1"

runat="server" SetFocusOnError="true" />