Overwrite in SQL not delete

//Only iterate if we still need to gather information.
{

if (Deviceissue[index].Key.Equals("activeissue.devicename"))
{
name = Deviceissue[index].Value;
}
else if (Deviceissue[index].Key.Equals("activeissue.servicename"))
{
serviceName = Deviceissue[index].Value;
}
else if (Deviceissue[index].Key.Equals("activeissue.customername"))
{
customerName = Deviceissue[index].Value;
}
else if (Deviceissue[index].Key.Equals("activeissue.socustomername"))
{
soName = Deviceissue[index].Value;
}
else if (Deviceissue[index].Key.Equals("activeissue.deviceclass"))
{
deviceClass = Deviceissue[index].Value;
}

index++;
string varLookFor = "Servers - Windows";
string varRetuned = deviceClass;
if (string.Equals(varLookFor, varRetuned))
{
// Console.WriteLine(name + " is a " + deviceClass + " Status is " + serviceName + " for " + customerName + " under the SO " + soName);
}
{

{
// Console.WriteLine(name + " ServiceName: " + serviceName + deviceClass);
}

// Write Data to SQL

String InsertQuery = "INSERT INTO ActiveIssue (CustomerName,ServerName,Type,DeviceClass) VALUES ('" + customerName + "','" + name + "','" + serviceName + "','" + deviceClass + "');";
SqlConnection Connection = new SqlConnection("Server=444LAB-NABLEDEV\\NEW_VANTAGE;Initial Catalog=msd;User ID=sa;[email protected]");
SqlCommand InsertCommand = new SqlCommand(InsertQuery, Connection);
Connection.Open();
InsertCommand.ExecuteNonQuery();
Connection.Close();
}
}


}
catch (Exception exception)
{
Console.WriteLine("Error:" + exception.Message);
}
// Add so that data can be viewed before program exits.


System.Threading.Thread.Sleep(TimeSpan.FromSeconds(30));