UBound behaviour

[Adam Honek]

I have the following code below.

The thing is, even if txtCCEmailAddre ss.Text is empty (no text), CCRecipeant
will return a Ubound() higher than 0 and still go in the loop.

If there's nothing to split how can CCRecipeant be a positive UBound value?
'Get the number of specified CC recipeants

CCRecipeant = txtCCEmailAddre ss.Text.Split(" ;")

'Now we need to add each one

For intCounter = 0 To CCRecipeant.Get UpperBound(0)

If CCRecipeant.Get UpperBound(0) >= 0 Then

..........some code here

End If

Next

Thanks,

Adam

[Fred]

Hi,

From .NET documentation.

Function Split(
ByVal Expression As String,
Optional ByVal Delimiter As String = " ",
Optional ByVal Limit As Integer = -1,
Optional ByVal Compare As CompareMethod = CompareMethod.B inary
) As String()
If Expression is a zero-length string (""), the Split function returns
an array of length one, containing an empty string.

Can you test txtCCEmailAddre ss.Text for length first?

Fred

[Göran Andersson]

Adam Honek wrote:

I have the following code below.

The thing is, even if txtCCEmailAddre ss.Text is empty (no text), CCRecipeant
will return a Ubound() higher than 0 and still go in the loop.
No, it wont. If the string is empty, the array will contain one item, so
UBound will return the value zero. That will make the loop iterate once.
If there's nothing to split how can CCRecipeant be a positive UBound value?
'Get the number of specified CC recipeants
There is always something to split. A string that doesn't contain a
separator contains one item. It doesn't matter if the string is empty or
not.

"asdf;asdf" -> two items: "asdf", "asdf"
"asdf;a" -> two items: "asdf", "a"
"asdf;" -> two items: "asdf", ""

"asdf" -> one item: "asdf"
"a" -> one item: "a"
"" -> one item: ""
CCRecipeant = txtCCEmailAddre ss.Text.Split(" ;")

'Now we need to add each one

For intCounter = 0 To CCRecipeant.Get UpperBound(0)

If CCRecipeant.Get UpperBound(0) >= 0 Then

.........some code here

End If

Next