Converting empty strings to Null

Posted on 2003-12-08
Last Modified: 2010-08-05
Is there a pre-existing function in VB.NET that converts an empty string to Null, or do you have to write it for yourself.
Question by:tyy8
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LVL 41

Expert Comment

ID: 9898562
An empty string is not the same as a null (in practically any language).  Tell us what you're trying to do (perhaps there is a better way to accomplish the goal).

Accepted Solution

bhagyesht earned 50 total points
ID: 9902057
this is a small function in vb just convert it to

function getnull(str as string) as string
   if str="" then
   end if
end function
LVL 30

Expert Comment

by:Mayank S
ID: 9902293
Converting that to VB.NET, you can use: Return vbnull and Return str instead of getnull = vbnull and getnull = str.

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Expert Comment

ID: 10061903
Public Function ConvertStr(ByVal str As String) As String
        If IsNothing(str) Then
            ConvertStr = str
        ElseIf str.Length = 0 Then
            ConvertStr = Nothing
            ConvertStr = str
        End If
    End Function
LVL 30

Expert Comment

by:Mayank S
ID: 10319072
Accept bhagyesht's comment as answer.

Expert Comment

ID: 10319692
Thanks mayankeagle      

Bhagyesh Trivedi

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