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    <p>I have been wrote this snippet time ago, it will teach you how to find and highlight word/phrases using Regular Expressions, you could easily adapt it to a WORD document reading, then the most important part of the problem would be solved with this:</p> <pre><code>#Region " [RichTextBox] FindNext RegEx " ' [ FindNext RegEx ] ' ' //By Elektro H@cker ' ' Examples : ' ' RichTextBox1.Text = "Hello World!, Hello World!, Hello World!" ' ' FindNext(RichTextBox1, "hello", FindDirection.Down, System.Text.RegularExpressions.RegexOptions.IgnoreCase, Color.LightBlue, Color.Black) ' FindNext(RichTextBox1, "hello", FindDirection.Up, System.Text.RegularExpressions.RegexOptions.IgnoreCase, Color.Red, Color.Black) ' ' Private Sub RichTextBox_Enter(sender As Object, e As EventArgs) ' Handles RichTextBox1.Enter ' ' Restore Selection Colors before search next match. ' sender.SelectionBackColor = DefaultBackColor ' sender.SelectionColor = DefaultForeColor ' End Sub Public Enum FindDirection As Short Up = 0 Down = 1 End Enum ' FindNext Private Sub FindNext(ByVal [Control] As RichTextBox, _ ByVal SearchText As String, _ ByVal Direction As FindDirection, _ Optional ByVal IgnoreCase As System.Text.RegularExpressions.RegexOptions = System.Text.RegularExpressions.RegexOptions.None, _ Optional ByVal Highlight_BackColor As Color = Nothing, _ Optional ByVal Highlight_ForeColor As Color = Nothing) If [Control].TextLength = 0 Then Exit Sub ' Start searching at 'SelectionStart'. Dim Search_StartIndex As Integer = [Control].SelectionStart ' Stores the MatchIndex count Dim matchIndex As Integer = 0 ' Flag to check if it's first find call Static First_Find As Boolean = True ' Checks to don't ommit the selection of first match if match index is exactly at 0 start point. If First_Find _ AndAlso Search_StartIndex = 0 _ AndAlso Direction = FindDirection.Down Then Search_StartIndex = -1 First_Find = False ElseIf Not First_Find _ AndAlso Search_StartIndex = 0 _ AndAlso Direction = FindDirection.Down Then First_Find = False Search_StartIndex = 0 End If ' Store the matches Dim matches As System.Text.RegularExpressions.MatchCollection = _ System.Text.RegularExpressions.Regex.Matches([Control].Text, _ SearchText, _ IgnoreCase Or If(Direction = FindDirection.Up, _ System.Text.RegularExpressions.RegexOptions.RightToLeft, _ System.Text.RegularExpressions.RegexOptions.None)) If matches.Count = 0 Then First_Find = True : Exit Sub ' Restore Highlight colors of previous selection [Control].SelectionBackColor = [Control].BackColor [Control].SelectionColor = [Control].ForeColor ' Set next selection Highlight colors If Highlight_BackColor = Nothing Then Highlight_BackColor = [Control].BackColor If Highlight_ForeColor = Nothing Then Highlight_ForeColor = [Control].ForeColor ' Set the match selection For Each match As System.Text.RegularExpressions.Match In matches matchIndex += 1 Select Case Direction Case FindDirection.Down If match.Index &gt; Search_StartIndex Then ' Select next match [Control].Select(match.Index, match.Length) Exit For ElseIf match.Index &lt;= Search_StartIndex _ AndAlso matchIndex = matches.Count Then ' Select first match [Control].Select(matches.Item(0).Index, matches.Item(0).Length) Exit For End If Case FindDirection.Up If match.Index &lt; Search_StartIndex Then ' Select previous match [Control].Select(match.Index, match.Length) Exit For ElseIf match.Index &gt;= Search_StartIndex _ AndAlso matchIndex = matches.Count Then ' Select last match [Control].Select(matches.Item(0).Index, matches.Item(0).Length) Exit For End If End Select Next match ' Set the current selection BackColor [Control].SelectionBackColor = Highlight_BackColor ' Set the current selection ForeColor [Control].SelectionColor = Highlight_ForeColor ' Scroll to Caret/Cursor selection position [Control].ScrollToCaret() End Sub #End Region </code></pre> <p>Also here you can see a video demostration: <a href="http://www.youtube.com/watch?v=mWRMdlC5DH8" rel="nofollow">http://www.youtube.com/watch?v=mWRMdlC5DH8</a></p>
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    1. POA program to highlight words in a word document
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    1. USElektroStudios
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