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I am working on one application where i have to change the background color of a Rich text Box Text using Line Number. I have found the Line Number, but when i tried to color the respective text of that line number, its not effecting any thing there. My Code is as follows:

this.RTB.Select(this.RTB.GetFirstCharIndexFromLine(lineNumber), this.RTB.Lines[lineNumber].Length);
this.RTB.SelectionBackColor = Color.Red;

Please, suggest me what is wrong in this code.


Shahab Abbasi

1 solution

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Solution 2

Please show me your RichTextbox Data............
In my case same code is working see here
int lineNumber = 2;
this.richTextBox1.SelectionBackColor = Color.Red;  

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