C# how to search a text in richtextbox & move the curser position to it...

[manoj323]

Can anyone tell me how to search a text in rich textbox & move the curser position to it while highlighting it...

[r035198x]

you can use the RichTextBox.Find method. Putting this in a method would be something like the below. It's not tested as I don't have a compiler here so you'll have to test and correct if there are errors but the general idea should work.

public void HighLightIfExists(RichTextBox textBox, string textToSearch) {
    int length = textBox.TextLength;
    int index = 0;
    int lastIndex = textBox.Text.LastIndexOf(textToSearch, StringComparison.OrdinalIgnoreCase);
      while ( index <= lastIndex ) {
        textBox.Find(textToSearch, index, length, RichTextBoxFinds.None);
        textBox.SelectionBackColor = Color.Yellow;
        index = this.textBox.Text.IndexOf(textToSearch, index) + 1;
      }
}