[2003] General : What String Functions Are There?
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    [2003] General : What String Functions Are There?

    The following is a list of the most common string functions used. Attached is a working sample of these functions in action.

    Q: How do I extract the first number of characters of a string?

    A:
    Code:
          Dim DirectionString As String = "Left Center Right"
            DirectionString = DirectionString.Substring(0, 4) 'Get Left
            MessageBox.Show(DirectionString)
    Q: How do I extract a string from another string?

    A:
    Code:
          Dim DirectionString As String = "Left Center Right"
            DirectionString = DirectionString.Substring(5, 6) 'Extract Center
            MessageBox.Show(DirectionString)
    Q: How do I extract the last few characters of a string?

    A:
    Code:
          Dim DirectionString As String = "Left Center Right"
            DirectionString = DirectionString.Substring(12) 'Get Right
            MessageBox.Show(DirectionString)
    Q: How do I split a string into separate parts?

    A:
    Code:
          Dim SplitString As String = "Milk,Toast,Honey"
            Dim SplitArr(2) As String
            Dim i As Integer
    
            SplitArr = SplitString.Split(","c) 'Split at Each Comma
    
            For i = 0 To SplitArr.Length - 1
                MessageBox.Show(SplitArr(i))
            Next
    Q: How do I Join strings, with a specified delimiter?

    A:
    Code:
          Dim JoinArr(2) As String
            Dim JoinString As String
            JoinArr(0) = "Milk"
            JoinArr(1) = "Toast"
            JoinArr(2) = "Honey"
            JoinString = String.Join(",", JoinArr)
            MessageBox.Show(JoinString)
    Q: How do Insert characters into a string?

    A:
    Code:
          Dim IncompleteString As String = "This is My Stng"
            Dim FullString As String
            ' Results in a value of "This is My String".
            FullString = IncompleteString.Insert(13, "ri")
            MessageBox.Show(FullString)
    Q: How do I remove unwanted characters from a string?

    A:
    Code:
          Dim RemoveString As String = "This is My Str@o@o@ing"
            Dim NewString As String
    
            ' NewString = "This is My String"
            NewString = RemoveString.Remove(14, 5)
            MessageBox.Show(NewString)
    Q: How do I replace characters with other characters in a string?

    A:
    Code:
          Dim ReplaceString = "This is My String"
            Dim NewString As String
    
            ' NewString = "This is Another String"
            NewString = ReplaceString.Replace("My", "Another")
    
            MessageBox.Show(NewString)
    Q: How do I remove leading and trailing spaces?

    A:
    Code:
          'Trim Spcaes
            Dim SpaceString As String = "        This string will have the spaces removed        "
            MessageBox.Show(SpaceString)
            Dim TrimmedString As String
            TrimmedString = Trim(SpaceString)
            MessageBox.Show(TrimmedString)
    Q: How do I remove leading and trailing characters other than spaces?

    A:
    Code:
          Dim HashString As String = "#####Testing!######"
            Dim TrimmedString As String
            TrimmedString = HashString.Trim("#")
            MessageBox.Show(TrimmedString)
    Q: How do I remove only leading spaces?

    A:
    Code:
          Dim SpaceString As String = "        This string will have the leading spaces removed        "
            MessageBox.Show(SpaceString)
            Dim TrimmedString As String
            TrimmedString = SpaceString.TrimStart(" ")
            MessageBox.Show(TrimmedString)
    Q: How do I remove only trailing spaces?

    A:
    Code:
          Dim SpaceString As String = "        This string will have the trailing spaces removed        "
            MessageBox.Show(SpaceString)
            Dim TrimmedString As String
            TrimmedString = SpaceString.TrimEnd(" ")
            MessageBox.Show(TrimmedString)
    Q: How do I add characters to the beginning of a string?

    A:
    Code:
          Dim MainString As String = "This will be padded on the left"
            Dim PaddedString As String
    
            PaddedString = MainString.PadLeft(36, "@") '36 = new length of string with 5 new chars
            MessageBox.Show(PaddedString)
    Q: How do I add characters to the end of a string?

    A:
    Code:
          Dim MainString As String = "This will be padded on the right"
            Dim PaddedString As String
    
            PaddedString = MainString.PadRight(36, "@") '36 = new length of string with 5 new chars
            MessageBox.Show(PaddedString)
    Q: How do I convert a string to UPPER CASE?

    A:
    Code:
          Dim MixedString As String = "UpPeR oR LoWeR cAsE"
            Dim UPPERString As String
            ' UPPERString = "UPPER OR LOWER CASE"
            UPPERString = MixedString.ToUpper
            MessageBox.Show(UPPERString)
    Q: How do I convert a string to lower case?

    A:
    Code:
          Dim MixedString As String = "UpPeR oR LoWeR cAsE"
            Dim lowerString As String
            'lowerString = "upper or lower case"
            lowerString = MixedString.ToLower
            MessageBox.Show(lowerString)
    Q: How do I convert a string to Title Case?

    A:
    Code:
          Dim TitleString As String = "UPPER lower Title"
            TitleString = TitleString.ToLower()  ' mainly because of UPPER not changing to title
            TitleString = System.Globalization.CultureInfo.InstalledUICulture.TextInfo.ToTitleCase(TitleString)
            MessageBox.Show(TitleString)
    Q: How do I use the Format function?

    A:
    Code:
          Dim UnFormattedDateTime As Date = #1/27/2001 5:04:23 PM#
            Dim FormatString As String
            ' Returns current system time in the system-defined long time format.
            FormatString = Format(Now(), "Long Time")
            ' Returns current system date in the system-defined long date format.
            MessageBox.Show(FormatString)
            FormatString = Format(Now(), "Long Date")
            MessageBox.Show(FormatString)
            ' Also returns current system date in the system-defined long date 
            ' format, using the single letter code for the format.
            FormatString = Format(Now(), "D")
            MessageBox.Show(FormatString)
            ' Returns the value of UnFormattedDateTime in user-defined date/time formats.
            FormatString = Format(UnFormattedDateTime, "h:m:s")   ' Returns "5:4:23".
            MessageBox.Show(FormatString)
            FormatString = Format(UnFormattedDateTime, "hh:mm:ss tt")   ' Returns "05:04:23 PM".
            MessageBox.Show(FormatString)
            FormatString = Format(UnFormattedDateTime, "dddd, MMM d yyyy")   ' Returns "Saturday,
            ' Jan 27 2001".
            MessageBox.Show(FormatString)
            FormatString = Format(UnFormattedDateTime, "HH:mm:ss")   ' Returns "17:04:23"
            MessageBox.Show(FormatString)
            FormatString = Format(23)   ' Returns "23".
            MessageBox.Show(FormatString)
            ' User-defined numeric formats.
            FormatString = Format(5459.4, "##,##0.00")   ' Returns "5,459.40".
            MessageBox.Show(FormatString)
            FormatString = Format(334.9, "###0.00")   ' Returns "334.90".
            MessageBox.Show(FormatString)
            FormatString = Format(5, "0.00%")   ' Returns "500.00%".
            MessageBox.Show(FormatString)
    Q: How do I concatenate strings?

    A: Option 1:
    Code:
    	Dim FirstName As String = "Hannes"
    	Dim Surname As String = "du Preez"
    	MessageBox.Show(FirstName & Surname)
    Option 2:
    Code:
            Dim ConcatString As String
            Dim aString As String = "A"
            Dim bString As String = "B"
            Dim cString As String = "C"
            Dim dString As String = "D"
            ' ConcatString = "ABCD"
            ConcatString = String.Concat(aString, bString, cString, dString)
            MessageBox.Show(ConcatString)
    Q: How do I determine the position of a certain character in a string?

    A:
    Code:
          Dim MainString As String = "ABCDE"
            Dim Result As Integer
            Result = MainString.IndexOf("D")  ' result = 3
            MessageBox.Show("D is Character number : " & Result.ToString)
    Q: How do I determine which character is at a certain position?

    A:
    Code:
          Dim MainString As String = "ABCDE"
            Dim ResultChar As Char
            ResultChar = MainString.Chars(3) ' resultChar = "D"
            MessageBox.Show("Character 3 is : " & ResultChar.ToString)
    Q: How do I determine the last occurence of a character in a string?

    A:
    Code:
          Dim MainString = "A\B\C\D\E\F\G\H\I\J"
            Dim Result As Integer
    
            Result = MainString.LastIndexOf("\")
            MessageBox.Show("Last occurence of ' \ ' is at Position : " & Result.ToString())
    Q: How do I compare strings?

    A:
    Code:
          Dim FirstString As String = "Alphabetical"
            Dim SecondString As String = "Order"
            Dim ThirdString As String = "Order"
            Dim FourthString As String = "Alphabetical"
            Dim Result1 As Integer
            Dim Result2 As Integer
            Result1 = String.Compare(FirstString, SecondString)
    
            MessageBox.Show("Result = " & Result1.ToString & Environment.NewLine & "First String Is Smaller Than Second")
    
            Result2 = String.Compare(ThirdString, FourthString)
            MessageBox.Show("Result = " & Result2.ToString & Environment.NewLine & "Third String Is Greater Than Fourth")
    Q: How do I determine the length of a string?

    A:
    Code:
          Dim MainString As String = "String To Test The Length"
            Dim Result As Integer = MainString.Length
    
            MessageBox.Show(Result.ToString & " Characters")
    Q: How do I copy strings?

    A:
    Code:
          Dim EmptyString As String
            Dim CopyString As String = "This Will Be Copied Into An Empty String"
            EmptyString = String.Copy(CopyString)
            MessageBox.Show(EmptyString)
    Attached Files Attached Files

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