How to find the last 7 words in single line richtextbox and highlight them

[bOywOnder123]

Hi guys sorry I have no code written because I'm not sure where to start.

I have a simple program with a single line richtextbox. I have buttons for all the numbers and characters in a deck of cards. For example buttons Joker A 2 3 4 5 6 7 8 9 10 J Q K and also a ? button which I want to treat as a word as well.

When I press a button it adds the corresponding num or letter to the richtextbox with a space following right after it.

What I am trying to achieve is when the word count is greater then 7 the last 7 words in the line of text will be highlighted. Which in this case except for the number 10 they are all 1 letter words

Does anyone have the expertise to know how to achieve this?

By the way my code sucks I know because I am just learning but everything works so far just need that feature to work. But here is all my code

Thanks in advance

Imports System.Text.RegularExpressions
Public Class HF_Helper
    Public resultsArray(0) As String
    Public results As Integer
    Private Sub Joker_Click(sender As Object, e As EventArgs) Handles Joker.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "JK "
        MyBox.SelectionColor = Color.DodgerBlue
        MyBox.AppendText("J ")
    End Sub

    Private Sub Wild2_Click(sender As Object, e As EventArgs) Handles Wild2.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "2 "
        MyBox.SelectionColor = Color.DarkOrange
        MyBox.AppendText("2 ")
    End Sub

    Private Sub Red3_Click(sender As Object, e As EventArgs) Handles Red3.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "R3 "
        MyBox.SelectionColor = Color.Red
        MyBox.AppendText("3 ")
    End Sub

    Private Sub Black3_Click(sender As Object, e As EventArgs) Handles Black3.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "3 "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("3 ")
    End Sub

    Private Sub Card4_Click(sender As Object, e As EventArgs) Handles Card4.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "4 "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("4 ")
    End Sub

    Private Sub Card5_Click(sender As Object, e As EventArgs) Handles Card5.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "5 "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("5 ")
    End Sub

    Private Sub Card6_Click(sender As Object, e As EventArgs) Handles Card6.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "6 "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("6 ")
    End Sub

    Private Sub Card7_Click(sender As Object, e As EventArgs) Handles Card7.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "7 "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("7 ")
    End Sub

    Private Sub Card8_Click(sender As Object, e As EventArgs) Handles Card8.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "8 "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("8 ")
    End Sub

    Private Sub Card9_Click(sender As Object, e As EventArgs) Handles Card9.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "9 "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("9 ")
    End Sub

    Private Sub Card10_Click(sender As Object, e As EventArgs) Handles Card10.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "10 "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("10 ")
    End Sub

    Private Sub CardJ_Click(sender As Object, e As EventArgs) Handles CardJ.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "J "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("J ")
    End Sub

    Private Sub CardQ_Click(sender As Object, e As EventArgs) Handles CardQ.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "Q "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("Q ")
    End Sub

    Private Sub CardK_Click(sender As Object, e As EventArgs) Handles CardK.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "K "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("K ")
    End Sub

    Private Sub CardA_Click(sender As Object, e As EventArgs) Handles CardA.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "A "
        MyBox.SelectionColor = Color.Black
        MyBox.AppendText("A ")
    End Sub

    Private Sub CardQuest_Click(sender As Object, e As EventArgs) Handles CardQuest.Click
        results = resultsArray.Count - 1
        ReDim Preserve resultsArray(results + 1)
        resultsArray(results) = "? "
        MyBox.SelectionColor = Color.DarkOliveGreen
        MyBox.AppendText("? ")
    End Sub

    Private Sub MyBox_TextChanged(sender As Object, e As EventArgs) Handles MyBox.TextChanged
        MyBox.SelectionAlignment = HorizontalAlignment.Left
    End Sub

    Private Sub UndoButton_Click(sender As Object, e As EventArgs) Handles UndoButton.Click

        If resultsArray.Count <= 1 Then
            MyBox.Lines = MyBox.Lines.Take(MyBox.Lines.Count - 1).ToArray
            ReDim resultsArray(0)
        Else
            MyBox.Lines = MyBox.Lines.Take(MyBox.Lines.Count - 1).ToArray
            ReDim Preserve resultsArray(resultsArray.Count - 2)
        End If

        Dim i As Integer
        For i = 0 To resultsArray.Count - 2
            If resultsArray(i) = "JK " Then
                MyBox.SelectionColor = Color.DodgerBlue
                MyBox.AppendText("J ")
            ElseIf resultsArray(i) = "R3 " Then
                MyBox.SelectionColor = Color.Red
                MyBox.AppendText("3 ")
            ElseIf resultsArray(i) = "? " Then
                MyBox.SelectionColor = Color.DarkOliveGreen
                MyBox.AppendText("? ")
            ElseIf resultsArray(i) = "2 " Then
                MyBox.SelectionColor = Color.DarkOrange
                MyBox.AppendText("2 ")
            Else
                MyBox.SelectionColor = Color.Black
                MyBox.AppendText(resultsArray(i))
            End If
            'MyBox.AppendText(resultsArray(i))
        Next i

    End Sub

    Private Sub HF_Helper_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Me.TopMost = True
    End Sub

    Private Sub CLR_Click(sender As Object, e As EventArgs) Handles CLR.Click
        MyBox.Lines = MyBox.Lines.Take(MyBox.Lines.Count - 1).ToArray
        ReDim resultsArray(0)
    End Sub

    Private Sub UP_Click(sender As Object, e As EventArgs) Handles UP.Click
        MyBox.Lines = MyBox.Lines.Take(MyBox.Lines.Count - 1).ToArray

        If resultsArray.Count - 1 >= 7 Then
            ReDim Preserve resultsArray(resultsArray.Count - 8)
        Else
            ReDim Preserve resultsArray(resultsArray.Count - resultsArray.Count)
        End If

        Dim i As Integer
        For i = 0 To resultsArray.Count - 2
            If resultsArray(i) = "JK " Then
                MyBox.SelectionColor = Color.DodgerBlue
                MyBox.AppendText("J ")
            ElseIf resultsArray(i) = "R3 " Then
                MyBox.SelectionColor = Color.Red
                MyBox.AppendText("3 ")
            ElseIf resultsArray(i) = "? " Then
                MyBox.SelectionColor = Color.DarkOliveGreen
                MyBox.AppendText("? ")
            ElseIf resultsArray(i) = "2 " Then
                MyBox.SelectionColor = Color.DarkOrange
                MyBox.AppendText("2 ")
            Else
                MyBox.SelectionColor = Color.Black
                MyBox.AppendText(resultsArray(i))
            End If

        Next i
    End Sub

    Private Sub Close_Click(sender As Object, e As EventArgs) Handles Close.Click
        Application.Exit()
    End Sub

    Private Sub Rollup_Click(sender As Object, e As EventArgs) Handles Rollup.Click
        If Me.FormBorderStyle = FormBorderStyle.FixedToolWindow Then
            Me.FormBorderStyle = FormBorderStyle.None
        Else
            Me.FormBorderStyle = FormBorderStyle.FixedToolWindow
        End If

    End Sub
End Class

[dday9]

This may not be perfect, but I think it is pretty close to what you want:

Private Sub MyBox_TextChanged(sender As Object, e As EventArgs) Handles MyBox.TextChanged
    Dim selectionStart = MyBox.SelectionStart
    ' Reset the existing formatting
    MyBox.SelectionStart = 0
    MyBox.SelectionLength = If(MyBox.TextLength > 0, MyBox.TextLength - 1, 0)
    MyBox.SelectionBackColor = MyBox.BackColor

    ' Color the last 7 words
    Dim words = MyBox.Text.Split(" "c)
    If (words.Length > 7) Then
        Dim allButLast7Words = words.Take(words.Length - 7)
        Dim allButLast7WordsLength = allButLast7Words.Sum(Function(word) word.Length + 1)
        MyBox.SelectionStart = allButLast7WordsLength
        MyBox.SelectionLength = MyBox.TextLength - allButLast7WordsLength
        MyBox.SelectionBackColor = Color.LightGoldenrodYellow
    End If

    ' Reset the cursor
    MyBox.SelectionStart = selectionStart
End Sub

[bOywOnder123]

This may not be perfect, but I think it is pretty close to what you want:

Private Sub MyBox_TextChanged(sender As Object, e As EventArgs) Handles MyBox.TextChanged
    Dim selectionStart = MyBox.SelectionStart
    ' Reset the existing formatting
    MyBox.SelectionStart = 0
    MyBox.SelectionLength = If(MyBox.TextLength > 0, MyBox.TextLength - 1, 0)
    MyBox.SelectionBackColor = MyBox.BackColor

    ' Color the last 7 words
    Dim words = MyBox.Text.Split(" "c)
    If (words.Length > 7) Then
        Dim allButLast7Words = words.Take(words.Length - 7)
        Dim allButLast7WordsLength = allButLast7Words.Sum(Function(word) word.Length + 1)
        MyBox.SelectionStart = allButLast7WordsLength
        MyBox.SelectionLength = MyBox.TextLength - allButLast7WordsLength
        MyBox.SelectionBackColor = Color.LightGoldenrodYellow
    End If

    ' Reset the cursor
    MyBox.SelectionStart = selectionStart
End Sub

wow this was perfect thank you so much the only change i made was changed -7 to -8 so it did 7 words instead of 6.. You rock bro going to go and study it now to see why that works.

tysm again

[dday9]

...going to go and study it now to see why that works...

The stuff before and after the conditional statement are pretty straight forward. Here is some explanation on the important bits:

• Declaring the allButLast7Words will take everything except for the last 7 items in the words collection.
• Declaring the allButLast7WordsLength will get the length (plus 1 for the space separator) of each word in the words collection and then add them all up
• The rest inside the conditional statement specifies the selection and then sets the BackColor of said selection

[bOywOnder123]

The stuff before and after the conditional statement are pretty straight forward. Here is some explanation on the important bits:

• Declaring the allButLast7Words will take everything except for the last 7 items in the words collection.
• Declaring the allButLast7WordsLength will get the length (plus 1 for the space separator) of each word in the words collection and then add them all up
• The rest inside the conditional statement specifies the selection and then sets the BackColor of said selection

hey tysm for the explanation.. I wonder if I can ask you one more thing and maybe you can give me the lingo I need to research...For the same app when I get to the end of the textbox line it continues to fill in the numbers I press but they are off the screen and since scroll bars are shut off I have to click into the textbox and drag to the end just to see the end of the line..The app is a fixed size and scrollbars aren't useful to me.

Is there a way to make it autoscroll to the end of the line when it is no longer in view.. I only found docs to autoscroll to the end of the rtb down to the bottom...but im a one line text box im already at the bottom lol

thanks again in advance

[Poppa Mintin]

Which in this case except for the number 10 they are all 1 letter words

Here's just a suggestion, instead of using A to K etc. as text for your buttons, don't use text at all... Use an image. Use your current code for your application but don't use the Button's .Text... Use the Button's .Tag instead and add the relevant image.

Just use any image utility to produce an image of each of the characters that you need... including one with an image of No. 10. Add these 14 (?) images to the Resources folder.
Declare and initiate an Image variable for each image to use in your project.

I recommend using an image in .png format, especially if you'd like to use a transparent background.



Poppa