replacing and changing the color of a character in rich text box

[mishi khan]

hi.
i want to replace the and change the color of a character in a rich text box. i can replace and change the color of the character but as soon as i replaced the second character the first characters color is loss...how can i maintain the color of all the replaced characters????

[GaryTexmo]

Use the Select method to select the text you want to change, then change the colour of that. I believe that's how I've done it in the past.

[mishi khan]

plz can u tell me how to replace a specific character on a specific location in richtext box...like ive four a in richtextbox...n i only want to replace two of them and also change their color...ive tried like

for(int s=0; s<richthextbox1.text.lenght; s++)
{
if(ricttextbox1.text[s]== 'a')

{
richtexbox2.text[s]= 'c';
}
}


but this wont work...this gives error that its read only....etc etc..

update:
sorry its
richtextbox1.text[s]='c';