Highlight specific string in Richtextbox control

This function highlight particular string by user defined color
call this function like in your code .
richTextBox1.Text = "This is Sample Application";
richTextBox1= HighLightColor(7,8,Color.Red,richTextBox1);

for Ex. StartIndex=7,EndIndexLength=8,strCol =Color.Red and pass richtextbox1
control.



public RichTextBox HighLightColor(int StartIndex, int EndIndexLength, Color strCol, RichTextBox rtbox)
{
rtbox.Select(StartIndex, EndIndexLength);
rtbox.SelectionColor = strCol;
return rtbox;

}



This gives output "Sample" string is highlighted by Red color;


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