How to create Word's Auto correct like feature for a Text Box on a Form

I have text Box (myTextBox) on a Form1 in simple Visual Basic Application for Visual Studio 2008.
I would like to create a Microsoft's Word like auto correct feature for this text box so that if I enter a predefine combination of letter followed by a space then that predefined sequence of letters gets immediately replaced by a predefined word or phrase. For example if I would like have ensure that if the user types hte in the text box followed by space that it should get immediately replace by ( the ) and if the user types whre followed by space, then this should get replaced immediately by ( where ). In other words I am trying to achieve a simple immediate spell check like feature for myTextBox. The only difference is that I am not aiming to create a full dictionary spell check feature, but a spell check for a limited number (10 to 15) of character combinations.

I would appreciate some guidance on the possible ways (approaches I can take ) to achieve this and if there is a piece of code that will help me achieve this I would appreciate if I could have that.

Many thanks for your help in anticipation.

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FaheemAhmadGulAsked:
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John (Yiannis) ToutountzoglouConnect With a Mentor Instructor Multiengine PilotCommented:
Ok...Spell Check Deppends on Framework you have ...
try also to read :http://www.componentsource.com/products/componentone-spell-net/index.html
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a_hassaanConnect With a Mentor Commented:
you can handle the OnTextChanged Event of the textbox and get the last word from the text property.

it's there where you will implement your dictionary lookup and replace the word if neccessary.

I think you may make good use of some .net data structures like hash tables and dictionaries for the sake of performance.

if i got more time later i may send you some sample code to do that easy task... but now you can go with the main guidelines above
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John (Yiannis) ToutountzoglouInstructor Multiengine PilotCommented:
You can use AutoComplete method in append method with CustomSource ....
As you already Asked do you have a source like a dictionary?
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John (Yiannis) ToutountzoglouInstructor Multiengine PilotCommented:
Sorry there is a class ...i forgot...
Take a look  here
http://msdn.microsoft.com/en-us/library/system.windows.controls.spellcheck.aspx
it is called SpellCheck Class
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John (Yiannis) ToutountzoglouInstructor Multiengine PilotCommented:
Also you can check the examples and the members of SpellCalss...following links from the above source
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FaheemAhmadGulAuthor Commented:
I think I made some mistake in clicking the right button. I meant to accept the solutions posted by a_hassaan and itoutou, splitting the points 175 and 325. I think by mistake I clicked Close Question button. I hope the points have still been allocated to a_hassaan and itoutou in the way I set them. I am not seeing any option to accept multiple solutions at present. Please let me know if I need to do anything else to give points to a hassaan and itoutou.
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John (Yiannis) ToutountzoglouInstructor Multiengine PilotCommented:
i think you can make it...try again...
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John (Yiannis) ToutountzoglouInstructor Multiengine PilotCommented:
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FaheemAhmadGulAuthor Commented:
I have requested help from moderators and requested them to accept the solutions on my behalf or make the option to accept multiple solutions available to me again.
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