VB.net Replace character at specific point in text


I have a RichTextBox where I need to replace a character "#"at a specific point eg 32.
How do I do this so  that any other instances of the character are not affected  in the RichTextBox
Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAsked:
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Michael FowlerSolutions ConsultantCommented:
Try this

str = str.Remove(32, 1).Insert(32, "#")

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Note: Position 32 is the 33rd character as this 0 based


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Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAuthor Commented:
Mike TomlinsonHigh School Computer Science, Computer Applications, and Mathematics TeachersCommented:
You could also do:
        RichTextBox1.SelectionStart = 32
        RichTextBox1.SelectionLength = 1
        RichTextBox1.SelectedText = "x"

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This might be preferable as it wouldn't change any existing formatting in the RTB.
Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAuthor Commented:
Thanks Mike
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