Difference between Show() and .Visible = true

[Diesel]

I was just wondering what the difference is between calling the Show function on a control or setting visible equal to true?

[sjn78]

Show is what you use essentially to confirm and place your control.

 

Dim c as New control()

 

form1.controls.add© 'puts it on the form

c.Show() ' now shows it

 

------------

 

Dim c as New control()

 

form1.controls.add© 'puts it on the form

c.visible = false 'makes it invisible

c.Show() ' now shows it, but its invisible

 

------------

 

Dim c as New control()

 

form1.controls.add© 'puts it on the form

c.visible = true 'makes it visible but since there is no show, nothing will appear

[Joe Mamma]

t looks like "Show" calls

"Visible = true"

results in 6 more code lines

 

Il DASM for Control.show()

 

.method public hidebysig instance void Show() cil managed

{

// Code size 8 (0x8)

.maxstack 8

IL_0000: ldarg.0

IL_0001: ldc.i4.1

IL_0002: call instance void System.Windows.Forms.Control::set_Visible(bool)

IL_0007: ret

} // end of method Control::Show

Il DASM for Control.Visible()

.method public hidebysig specialname instance void

set_Visible(bool 'value') cil managed

{

// Code size 8 (0x8)

.maxstack 8

IL_0000: ldarg.0

IL_0001: ldarg.1

IL_0002: callvirt instance void System.Windows.Forms.Control::SetVisibleCore(bool)

IL_0007: ret

} // end of method Control::set_Visible

[wyrd]

Straight form MSDN docs;

 

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemwindowsformscontrolclassshowtopic.asp

 

Showing the control is equivalent to setting the Visible property to true. After the Show method is called, the Visible property returns a value of true until the Hide method is called.

 

In short, there is no difference.

[Diesel]

Thanks, thats exactly what I wanted