Microsoft.VisualBasic.Replace bug

[Harry F. Harrison]

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.Visua lBasic.Replace( "", "AND", "And", , ,
CompareMethod.B inary)

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

[Herfried K. Wagner [MVP]]

Re: Microsoft.Visua lBasic.Replace bug

"Harry F. Harrison" <harryh66@hotma il.comschrieb:

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.Visua lBasic.Replace( "", "AND", "And", , ,
CompareMethod.B inary)
>
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.

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.d e/group/microsoft.publi c.dotnet.langua ges.vb/browse_frm/thread/41cbc41c1c2331a c>

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://dotnet.mvps.org/dotnet/faqs/>