C#

private void button1_Click(object sender, EventArgs e)
{
    CZKEMClass zkSDK = new CZKEMClass();
    if (zkSDK.Connect_Com(1, 1, 115200)) //connection was succesfull
    {
        if (zkSDK.ReadAllGLogData(1)) //this method gets all the data from the device and puts it in my ram
        {
            int badgeNo = 0;
            int verifyMode = 0;
            int inOutMode = 0;
            string dateTime = "";

            while (zkSDK.GetGeneralLogDataStr(1, ref badgeNo, ref verifyMode, ref inOutMode, ref dateTime))
            {
                MessageBox.Show(badgeNo + "\r\n" + verifyMode + "\r\n" +inOutMode + "\r\n" + dateTime);
            }
        }
        zkSDK.Disconnect(); //disconnect the conection
    }
}

you.suck = (you.passion != Programming)

CZKEMClass zkSDK = new CZKEMClass();<br />
  // do you stuff<br />
zkSDK.Disconnect(); //disconnect the conection<br />
<br />
Mashal.ReleaseComObject(zkSDK); // This is vital!<br />

SomeInteropClass sic = null;
try
{
  sic = new SomeInteropClass();
  // ...
}
finally
{
  if (sic != null) Marshal.ReleaseComObject(sic);
}