substring

[danyeungw]

When I used "me.Textbox1.Text.Subtring" I got an error "Overload resolution failed because no accessible 'Substring' accepts this member of arguments." What did I miss?

Thanks.
DanYeung

 

[gmacek]

Well, you have to tell the substring method what part of the string you want. You do thins like so:

me.txtbox1.text = "abcdefgh"
dim StartPosition as int32 = 1
dim StringLength as int32 = 3
dim mySubString as string
mySubString = me.txtbox1.text.substring(StartPosition, StringLength)
 
'now you shoud have "bcd" in the mySubString variable.

I hope this answers your question.

Have fun
G.
If you are happy with my answer, please add a few point to my reputation.

 

[danyeungw]

Here is my code. What was wrong? I got error on Me.TextBoxIn.Text.Substring.

Dim idx AsInteger
Dim textOut As stringbuilder = New Stringbuilder
For idx = 0 To Len(Me.TextBoxIn.Text) - 1
SelectCase idx
Case 1, 3, 4, 5, 7, 9, 11
textOut.Append(Me.TextBoxIn.Text.Substring, idx, 1)
CaseElse
...
EndSelect
Next

Thanks.
DanYeung

 

[gmacek]

You are missing a parenthesis after Substring and you have to remove the comma.

textOut.Append(Me.TextBoxIn.Text.Substring, idx, 1)

textOut.Append(Me.TextBoxIn.Text.Substring( idx, 1))

G.

 

[danyeungw]

Thanks.
DanYeung