Save bitmap image code explanation

[Beginner]

Private Sub SaveImage_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveImage.Click
Dim sfd As New SaveFileDialog
sfd.Filter = "Bitmap Files|*.bmp"
sfd.ShowDialog()
If sfd.FileName <> "" Then


Regarding the <> what does it exactly mean ?

 

[JohnH]

Type "<>" in help and you get the "Comparison Operators" article that says it means "Not equal to".

 

[Beginner]

Thanx John but whats the logci behind that ?


so the code line is saying if sfd.filname not equals to then execute the following command; End if ??

Still not making sense why cant we skip the part.


When i put the mouse over the <> it says "Represents a Boolean Value"

Still dont understand.

 

[JohnH]

The expression compares the Filename string with an empty string. Obviously the code only wants to do something if the filename is not an empty string. A correct code would compare the result of the ShowDialog function to see if user clicked OK.