Highlight specific text in richtextbox

Question

I have a window form that contain a listbox and some richtextboxex. listbox contains some values. When I select any value from l

Answer 1

Something like this should work (just tested this.. seems to work fine):

int openBrace = richTextBox.Text.IndexOf("<");
while (openBrace > -1) {
    int endBrace = richTextBox.Text.IndexOf(">", openBrace);
    if (endBrace > -1) {
        richTextBox.SelectionStart = openBrace;
        richTextBox.SelectionLength = endBrace - openBrace;
        richTextBox.SelectionColor = Color.Blue;
    }
    openBrace = richTextBox.Text.IndexOf("<", openBrace + 1);
}