Find the index of a char in string

Question

I have a string that goes like  abcdefg      I would like to find the index where the letter d is at  so I can get the number 3   I managed to do it by looping through each letter in the string  but that doesn t sound very convenient  Is there another way

User · Answer

abcdefgh    IndexOf  d     returns 3  In general returns first occurrence index  if not present returns -1

User · Answer

Contanis occur if using the method of the present letter  and store the corresponding number using the IndexOf method  see example below       Private Sub Button1 Click sender As System Object  e As System EventArgs  Handles Button1 Click     Dim myString As String    abcdef      Dim numberString As String   String Empty      If myString Contains  d   Then         numberString   myString IndexOf  d       End If End Sub   Another sample with TextBox    Private Sub Button1 Click sender As System Object  e As System EventArgs  Handles Button1 Click     Dim myString As String    abcdef      Dim numberString As String   String Empty      If myString Contains me TextBox1 Text  Then         numberString   myString IndexOf Me TextBox1 Text      End If End Sub   Regards

User · Answer

The String class exposes some methods to enable this  such as IndexOf and LastIndexOf  so that you may do this   Dim myText    abcde  Dim dIndex   myText IndexOf  d   If  dIndex  gt  -1  Then  End If

[vb.net] Find the index of a char in string?

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