C# Problem : for spell checking ability in richtextbox

[Coool]

thanks for this lovely article but i need this spell checking coding in C#.NET and im demn new to it.

however, i tried but it raise error at some point .. i think it's quiet easy for u
thanks

namespace SpellCheck
{
    public class CheckAndCorrect
    {
        Microsoft.Office.Interop.Word._Application MSOfficeApp;
        private bool mbKillMe;

        protected bool Property KillMe
        {
            get
            {
                InitializeMe();
                KillMe = mbKillMe;
                return KillMe;
            }
            set
            {
                mbKillMe = Value;
            }
        }
    
        public void InitializeMe() 
        { 
            try
            {
                //<INITIALIZE WORD>
                MSOfficeApp = DirectCast(GetObject(, "Word.Application"), Word.Application);
            }
            catch (Exception e)
            {
                if (TypeName(MSOfficeApp) = "Nothing")
                {
                    MSOfficeApp = DirectCast(CreateObject("Word.Application"), Word.Application);
                    mbKillMe = True;
                }
                else
                {
                    MessageBox.Show(ex.Message, "SpellChecker™.NET", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                }
            }
        }


        protected string SpellMe(string Text)
        {
            Microsoft.Office.Interop.Word.Document oDoc;
            int iWSE,iWGE,iResp;
            string sReplace;

            if (Text = String.Empty)
            {

            }
            else 
            {
                try
                {
                    InitializeMe();
                    
                    switch(MSOfficeApp.Version)
                    {
                        case "9.0" :
                        case "10.0" :
                        case "11.0" :
                            oDoc = MSOfficeApp.Documents.Add(,,,1,true);
                            break;
                        case "8.0" :
                            oDoc = MSOfficeApp.Documents.Add();
                            break;
                        default:
                           return;
                    }

                    oDoc.Words.First.InsertBefore(Text);
                    iWSE = oDoc.SpellingErrors.Count;
                    iWGE = oDoc.GrammaticalErrors.Count;
                    
                    //<CHECK SPELLING AND GRAMMER DIALOG BOX>
                    if (iWSE > 0 || iWGE > 0)
                    {
                        // <HIDE MAIN WORD WINDOW>
                        MSOfficeApp.Visible = False;
                        if (MSOfficeApp.WindowState = Word.WdWindowState.wdWindowStateNormal ||MSOfficeApp.WindowState = Word.WdWindowState.wdWindowStateMaximize) 
                            MSOfficeApp.WindowState = Word.WdWindowState.wdWindowStateMinimize;
                        else
                            MSOfficeApp.WindowState = Word.WdWindowState.wdWindowStateMinimize;
                        
                        //</HIDE MAIN WORD WINDOW>
                        //<PREP CHECK SPELLING OPTIONS DIALOG BOX (MODIFY TO YOUR PREFERENCES)>
                        MSOfficeApp.Dialogs(Word.WdWordDialog.wdDialogToolsSpellingAndGrammar).Application.Options.CheckGrammarWithSpelling = True;
                        MSOfficeApp.Dialogs(Word.WdWordDialog.wdDialogToolsSpellingAndGrammar).Application.Options.SuggestSpellingCorrections = True;
                        MSOfficeApp.Dialogs(Word.WdWordDialog.wdDialogToolsSpellingAndGrammar).Application.Options.IgnoreUppercase = False;
                        MSOfficeApp.Dialogs(Word.WdWordDialog.wdDialogToolsSpellingAndGrammar).Application.Options.IgnoreInternetAndFileAddresses = True;
                        MSOfficeApp.Dialogs(Word.WdWordDialog.wdDialogToolsSpellingAndGrammar).Application.Options.IgnoreMixedDigits = False;
                        MSOfficeApp.Dialogs(Word.WdWordDialog.wdDialogToolsSpellingAndGrammar).Application.Options.ShowReadabilityStatistics = False;
                        
                        //</PREP CHECK SPELLING OPTIONS DIALOG BOX (MODIFY TO YOUR PREFERENCES)>
                        //<DO ACTUAL SPELL CHECKING>
                        MSOfficeApp.Visible = True;
                        MSOfficeApp.Activate();
                        iResp = MSOfficeApp.Dialogs(Word.WdWordDialog.wdDialogToolsSpellingAndGrammar).Display;
                        
                        //</DO ACTUAL SPELL CHECKING>
                        if (iResp < 0 )
                        {
                            MSOfficeApp.Visible = True;
                            MessageBox.Show("Corrections Being Updated!", "VB/Office Guru™ SpellChecker™", MessageBoxButtons.OK, MessageBoxIcon.Information);
                            oDoc.Select();
                            oDoc.Range.Copy();
                            sReplace = DirectCast(Clipboard.GetDataObject.GetData("System.String", True), String);
                            
                            //<FIX FOR POSSIBLE EXTRA LINE BREAK AT END OF TEXT>
                            if ((InStrRev(sReplace, Chr(13) & Chr(10))) = (Len(sReplace) - 1))
                            {
                                sReplace = String.Mid(sReplace, 1, Len(sReplace) - 2);
                            }
                            //</FIX FOR POSSIBLE EXTRA LINE BREAK AT END OF TEXT>
                            SpellMe = sReplace;
                        }
                        else if (iResp = 0 )
                        {
                            MessageBox.Show("Spelling Corrections Have Been Canceled!", "VB/Office Guru™ SpellChecker™.NET", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                            SpellMe = Text;
                        }
                    } 
                    else 
                    {
                        MessageBox.Show("No Spelling Errors Found" & Environment.NewLine & "Or No Suggestions Available!", "VB/Office Guru™ SpellChecker™.NET", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                        SpellMe = Text;
                    }

                    //</CHECK SPELLING AND GRAMMER DIALOG BOX>
                    oDoc.Close(False);
                    oDoc = Nothing;
                    
                    //<HIDE WORD IF THERE ARE NO OTHER INSTANCES>
                    if (KillMe = True) 
                    {
                        MSOfficeApp.Visible = False;
                    }
                }
                catch (Exception e)
                {
                    MessageBox.Show(ex.Message, "SpellChecker™.NET", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                }
           }
       }
    }
}

waiting for quick replay..