In VS 2003, If an empty string is passed into the 1st parameter, the Replace
function returns Nothing.

Example:

Dim strResults As String = ""
strResults = Microsoft.VisualBasic.Replace("", "AND", "And", , ,
CompareMethod.Binary)

looking at strResults in the debugger shows it having a value of nothing
after executing the Replace function.

The documentation specifically says that it should return an empty string.

Return Values
Replace returns the following values:

      If Replace returns
      Expression is zero-length Zero-length string ("")
      Find is zero-length Copy of Expression
      Replace is zero-length Copy of Expression with no occurrences of Find
      Start is greater than length of expression Zero-length string
      Count is 0 Copy of Expression

Show quote Hide quote Yes, this is a bug in the implementation.  Unfortunately Microsoft decided
to change the method specification instead of fixing the implementation in
VB 2005:

Check out this discussion:

<URL:http://groups.google.de/group/microsoft.public.dotnet.languages.vb/browse_frm/thread/41cbc41c1c2331ac>

You're good if you can answer this one.....
for each on multiple collections
Problem with access database, and VB .NET
Office application object problem
Microsoft Visual Studio 2005 Tools for Applications
Changing Printer's default paper
Extracting icon from file: most efficient method?
Q: GetChildRows
Parse bookmarks in a word document
Does a menu item lose dataset information?