acces database row delete

The following command deletes the rows that contain "13856" in the corresponding rows in the Access database.

 

I want the rows containing "13856" to remain and the others rows to be deleted. So I want the exact opposite of what you did with the code below. please help me.

 

using (var myConnection = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + patch))

using (var myCommand = myConnection.CreateCommand())

{

var nameParam = new OleDbParameter("@k", "13856";

myCommand.CommandText = "DELETE FROM [bill] WHERE (k) = @k";

myCommand.Parameters.Add(nameParam);

myConnection.Open();

myCommand.ExecuteNonQuery();

}