Question

I have a C# visual studio 2005 form …

On the form I need to programatically allow buttons to be available to be available.

e.g.
a.) available for usage if a file is open
b.) unavailable for usage if a file is not open.

Ideally I want to do something like word does — like word, where the buttons are greyed out if you they can not be used.

–>edit
In a windows C# GUI (not web based).

Answer 1

You can do something like this (I figured you needed some code):

if(//the document is open)
{
  btnYourButton.Enabled = true; //to make it available
  btnYourButton.Visible = true; //to show the button
}
else
{
  btnYourButton.Enabled = false; //to make it unavailable
  btnYourButton.Visible = false; //to hide the button
}

Enabled determines the usability of the button.
Visible hides or shows the button.