Is there a way to check Fileupload has file or not in client side.If It has i want to enable button

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Home >> .Net >> VB.Net >> Is there a way to check Fileupload has file or not in client side.If It has i want to enable button

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Post

Nattapong Unaregul

Total Post: 3
Member Since: 7/20/2012
Points: 17

Is there a way to check Fileupload has file or not in client side.If It has i want to enable button

Posted On: 7/21/2012 12:02:35 AM

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Here is my code in default.aspx .The default.aspx is in the content place

<%@ Page Language="VB" MasterPageFile="~/MasterPage.master" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" title="Untitled Page" %>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

<table>

<td> <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="Task cannot be blank"

InitialValue="" ControlToValidate="FileUpload1"> </asp:RequiredFieldValidator></td></tr>

</table>

</asp:Content>

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Post

Arun Singh

Total Post: 48
Member Since: 7/1/2011
Points: 331

Re: Is there a way to check Fileupload has file or not in client side.If It has i want to enable button

Posted On: 7/21/2012 12:58:39 AM

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Hi Nattapong Unaregul,
Check out the following link it might be resolve your problem.....

http://www.mindstick.com/Articles/7d72a758-52bc-4242-922f-6b3914895d92/?Validating%20FileUpload%20control

http://mindstick.com/Articles/c323d0d8-495e-46c6-a12d-024908aa7a29/

Author

Post

Nattapong Unaregul

Total Post: 3
Member Since: 7/20/2012
Points: 17

Re: Is there a way to check Fileupload has file or not in client side.If It has i want to enable button

Posted On: 7/22/2012 8:19:13 PM

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Thank for your advice.Here is my solution

^{<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">}

^{<asp:FileUpload ID="FileUpload1" runat="server" onchange="FileUpload_OnChange(this,event);" />      }

^<table>

^{<tr> <td> <input type="button" value = "Preview" /></td> </tr>}

^</table>

^{<script language="javascript" type ="text/javascript" >}

^{function Alert(myButton) {}

^{alert(myButton)}

^{function changeColor(myButton) {}

^{myButton.value = "OK";}

^{function FileUpload_OnChange(sender, e) {}

^{document.getElementById('<%=Button1.ClientID %>').disabled = false;}

^</script>

^{</asp:Content>}

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