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POSearch and replace in Richtextbox - Visual Basic
primarykey
Id
13112887
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AcceptedAnswerId
13112935
AnswerCount
1
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2012-10-28T20:47:51.607
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2012-10-29T12:41:39.533
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2012-10-29T12:41:39.533
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ViewCount
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text
Body
I have a richtextbox that I want to search and replace only WHOLE words. I have some code, however I have a feeling the way I have done it may not allow whole words only. CODE: <pre><code> Dim search As String = TextBox1.Text Dim replace1 As String = TextBox2.Text Dim input As String input = Form1.RichTextBox1.Text.Trim Dim location As Integer search = search.Trim() replace1 = replace1.Trim() location = input.IndexOf(search) If location = -1 Then MsgBox("Text not found", MsgBoxStyle.Exclamation, "Not Found") Else Form1.RichTextBox1.Text = input.Remove(location, search.Length).Insert(location, replace1) MsgBox("Text " & search & " has been replaced with " & replace1, , ) End If </code></pre> If you have another way of doing it please share. Second attempt: Now works, however I want only whole words to be found. <pre><code> Dim search As String = TextBox1.Text Dim replace1 As String = TextBox2.Text Dim input As String input = Form1.RichTextBox1.Text.Trim search = search.Trim() replace1 = replace1.Trim() If Regex.IsMatch(input, search) = True Then Dim out As String = Regex.Replace(input, search, replace1) Form1.RichTextBox1.Text = out MsgBox(search & " has been replaced with " & replace1, MsgBoxStyle.Information, "Success") Else MsgBox("Not found", MsgBoxStyle.Exclamation, "Not Found") End If </code></pre> FINAL CODE: <pre><code> Dim search As String = TextBox1.Text Dim replace1 As String = TextBox2.Text Dim input As String input = Form1.RichTextBox1.Text.Trim search = search.Trim() replace1 = replace1.Trim() If Regex.IsMatch(input, " " & search & " ") = True Then Dim out As String = Regex.Replace(input, " " & search & " ", " " & replace1 & " ") Form1.RichTextBox1.Text = out MsgBox(search & " has been replaced with " & replace1, MsgBoxStyle.Information, "Success") GoTo line Else GoTo line3 MsgBox("Not found", MsgBoxStyle.Exclamation, "Not Found") End If line3: If Regex.IsMatch(input, search & " ") = True Then Dim out As String = Regex.Replace(input, search & " ", replace1 & " ") Form1.RichTextBox1.Text = out MsgBox(search & " has been replaced with " & replace1, MsgBoxStyle.Information, "Success") GoTo line Else GoTo line2 MsgBox("Not found", MsgBoxStyle.Exclamation, "Not Found") End If line2: If Regex.IsMatch(input, " " & search) = True Then Dim out As String = Regex.Replace(input, " " & search, " " & replace1) Form1.RichTextBox1.Text = out MsgBox(search & " has been replaced with " & replace1, MsgBoxStyle.Information, "Success") GoTo line Else MsgBox("Not found", MsgBoxStyle.Exclamation, "Not Found") GoTo line End If line: </code></pre>
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<vb.net>
Title
Search and replace in Richtextbox - Visual Basic
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1. PO
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1. USDs.109
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1. USDs.109
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 POSearch and replace in Richtextbox - Visual Basic
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