How to make the other control visible

[cmrhema]

Hi
I have a fileupload control in asp.net and another normal button.

What I want to do is I want the Normal Button to be enabled only after the files has been chosen in the FileUpload control.

Can anyone help me please


regards
cmrhema

[shweta123]

Hi,

You can check if files has beed selected or not into FileUpload control using FileName property.
e.g.

''Check if file is selected for uploading

If FileUpload1.FileName <> "" Then
''Write code to enable button
End If

[Frinavale]

Hi
I have a fileupload control in asp.net and another normal button.

What I want to do is I want the Normal Button to be enabled only after the files has been chosen in the FileUpload control.

Can anyone help me please


regards
cmrhema

You are going to have to have a bit of JavaScript check to see if anything has been provided by the user.

I would create a function that would be executed on the FileUpload's "onchange" JavaScript event:

eg:

myPhotoUpload.Attributes.Add("onchange","EnableUploadButton('" + myUploadButton + "')")
 

Where the JavaScript function "EnableUploadButton" would resemble something like:

function EnableUploadButton(idOfButton)
{
    var button = document.getElementByID(idOfButton).disabled = false;
}
 

You will have to set your upload button to be initially rendered in the browser as "disabled".

Cheers!

-Frinny

[cmrhema]

You are going to have to have a bit of JavaScript check to see if anything has been provided by the user.

I would create a function that would be executed on the FileUpload's "onchange" JavaScript event:

eg:

myPhotoUpload.Attributes.Add("onchange","EnableUploadButton('" + myUploadButton + "')")
 

Where the JavaScript function "EnableUploadButton" would resemble something like:

function EnableUploadButton(idOfButton)
{
    var button = document.getElementByID(idOfButton).disabled = false;
}
 

You will have to set your upload button to be initially rendered in the browser as "disabled".

Cheers!

-Frinny

Many Thanks Frinnvale, it works now