C#

public void coordHandler(double x, double y, double z, int buttonNumber)
{
   xCoord.Text = x.ToString();
   yCoord.Text = y.ToString();
   zCoord.Text = z.ToString();
}

MyCOMInterfaceLib.MyCOMClassClass myApi = new MyCOMInterfaceLib.MyCOMClassClass();
myApi.coordCallback += new coordCallbackFunction(this.coordHandler);

public class sheetCols
{
string colHdg;
public string colLetter;
public StringBuilder colValue = new StringBuilder(" ");
                  

    public sheetCols(string s1, string s2, string s3)   //error indicated on "sheetCols"
    {
         this.colHdg = s1;
         this.colLetter = s2;
         this.colValue.Length = 0; // warning indicated on this.colValue
         this.colValue.Append(s3);
    }
}

private void EncryptFile(string inputFile, string outputFile)
{

    try
    {
        string password = @"19651969"; // Your Key Here
        UnicodeEncoding UE = new UnicodeEncoding();
        byte[] key = UE.GetBytes(password);

        string cryptFile = outputFile;
        FileStream fsCrypt = new FileStream(cryptFile, FileMode.Create);

        RijndaelManaged RMCrypto = new RijndaelManaged();

        CryptoStream cs = new CryptoStream(fsCrypt,
            RMCrypto.CreateEncryptor(key, key),
            CryptoStreamMode.Write);

        FileStream fsIn = new FileStream(inputFile, FileMode.Open);

        int data;
        while ((data = fsIn.ReadByte()) != -1)
            cs.WriteByte((byte)data);


        fsIn.Close();
        cs.Close();
        fsCrypt.Close();
    }
    catch
    {
        MessageBox.Show("Encryption failed!", "Error");
    }
}

private void DecryptFile(string inputFile, string outputFile)
{

    {
        string password = @"19651969"; // Your Key Here

        UnicodeEncoding UE = new UnicodeEncoding();
        byte[] key = UE.GetBytes(password);

        FileStream fsCrypt = new FileStream(inputFile, FileMode.Open);

        RijndaelManaged RMCrypto = new RijndaelManaged();

        CryptoStream cs = new CryptoStream(fsCrypt,
            RMCrypto.CreateDecryptor(key, key),
            CryptoStreamMode.Read);

        FileStream fsOut = new FileStream(outputFile, FileMode.Create);

        int data;
        while ((data = cs.ReadByte()) != -1)
            fsOut.WriteByte((byte)data);

        fsOut.Close();
        cs.Close();
        fsCrypt.Close();

    }
}

private void Form1_Load(object sender, EventArgs e)
{

    if (File.Exists("scf.sf"))
    {
        DecryptFile("scf.sf", "sff.sf");
        File.Delete("scf.sf");
        File.Move("sff.sf", "scf.sf");

        TextReader encryptRead = new StreamReader("scf.sf");
        string encryptionCheck = encryptRead.ReadToEnd();
        encryptRead.Close();

        if (encryptionCheck.Contains("locked"))
        {
            MessageBox.Show("**yayaya***", "BlaBla", MessageBoxButtons.OK, MessageBoxIcon.Stop);

            EncryptFile("scf.sf", "ssf.sf");
            File.Delete("scf.sf");
            File.Move("ssf.sf", "scf.sf");

            Application.Exit();
        }
    }
    else
    {
        MessageBox.Show("Component Corrupt, Application Will Now End.", "Slyther Security Runtime", MessageBoxButtons.OK, MessageBoxIcon.Error);
        Application.Exit();
    }


    EncryptFile("slcf.sf", "slcfc.sf");
    File.Delete("slcf.sf");
    File.Move("slcfc.sf", "slcf.sf");

}

while ((data = cs.ReadByte()) != -1)

IndexOutOfRangeException was Unhandled.

Index was outside the bounds of the array.

private void OpenWord_Click(object sender, EventArgs e)
{
    object oMissing = System.Reflection.Missing.Value;

    oWord = new Word.Application();
    oWordDoc = new Word.Document();
    oWord.Visible = true;
    oWord.NormalTemplate.Saved = true;

    oTemplatePath = "D:\\Template.doc";
    oWordDoc = oWord.Documents.Open(ref oTemplatePath, ref oMissing, ref readOnly, ref readOnly, ref oMissing, ref oMissing, ref readOnly, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing);

    object findText = "Name_of_Applicant";
    try
    {
        int index_name = 0;
        object oReplace = "Name_" + index_name.ToString();
        foreach (Word.Range tmpRange in oWordDoc.StoryRanges)
        {
            //The Paramater 11 is the REPLACED text
            if (oWord.Application.Selection.Find.Execute(ref findText, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oReplace, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing))
            {
                index++;
            }
        }
    }
    catch
    {
        MessageBox.Show("The text could not be located.");
    }
}