hi all ... i have a little question..

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im working in some kind of EDITOR program and i wanna (ON TEXT CHANGE event for richTectBox) to change the color of some words

e.g:
when user press the (e) key and the past litters was (creat) then the (creat + e) word ganna be with some color or change the style of font or or or ... so i used(selectedText property) but i face problem
which it : when the (create) set my program create same word again and set the changes on it..help me to make it right

and sorry about my bad grammer and language ..

See the following two projects:

Enabling syntax highlighting in a RichTextBox
Syntax highlighting textbox written in C#

Could you try rewording your question again? Sorry... not sure what you're trying to do.

I think he wants to change the color of some words when they are fully typed. Like in VS 2005, if you type 'lon' it's color is black, but when you type 'g' after 'lon', it becomes 'long', and it turns blue.

Is that right holy_spirit?

yap your are right, thats waht i want but as i said my language not strong enought to explaine the idea

any way ....thanx ...

so is it clear now ??

See the following two projects:

Enabling syntax highlighting in a RichTextBox
Syntax highlighting textbox written in C#

thanx alot.....