VB "Left"

[bungpeng]

VB "Left" and "Right" function is not available in VB.NET?

 

May I know what other functions in VB are not available in VB.NET? Any references?

[PlausiblyDamp]

Dim s as string = "test String"
MessageBox.Show (s.Substring(1,2))

 

would be the equivalent of Left$ - by using different parameters for the .SubString method you can acheive the same as Left$, Right$, mid$ etc.

[themster]

Imports

 

You need to import the namespace that includes the Left function.

Include this first in your code, before any declaration.

 

Imports Txt = Microsoft.VisualBasic.Strings

 

You can then use the following syntax to access the Left function.

 

Txt.Left("testing,2)

 

You can you the Object Browser to search for the function you are looking for and then include the required namespace using Imports.

[Robby]

Use SubString() as PlausiblyDamp pointed out, stay away from legacy VB specic code. If you ever need to port your VB code to C# wouldn't you like it to be as seamless as possible.

[bungpeng]

Thank you! currently I am using SubString to replace left and right. But "Mid" is still available right?

 

Just felt that "Right" is not so conveninet to replace with SubString...:)

[Robby]

SubString replaces Mid as well

[CattleRustler]

Mid() is still available, which you can use to do anything you could with left() or right() functions, also you can use substring like stated above, and you can still use instr() and instrrev()

 

so everything should be peachy!

[PlausiblyDamp]

Insttead of InStr and instrRev you could (in fact should) use string.IndexOf or string.LastIndexOf

[themster]

I might be me, but I can't use substring to replace chars within strings like I can with mid. I have tried to use Insert but it doesn't seem to replace, it only inserts new chars.

[dynamic_sysop]

you certainly can replace chars with SubString :) eg:

       Dim strString As String = "abc123"
       Dim strNewString As String = strString.Replace(strString.Substring(1, 1), "B")
       MessageBox.Show(strNewString) '/// b will be replaced with B