Why won't my c# connection string to a SQL server work with Windows authentication?

{
        OdbcConnection cn = null;
        String connectionString;
            connectionString = "Driver={SQL Server};Server=" + cbxDataSources.Text +";Database=" + strDatabase + ";";

            connectionString += "UID=" + textBoxUserName.Text + ";";
            connectionString += "PWD=" + textBoxPassword.Text + ";";

        cn = new OdbcConnection(connectionString);
        return cn;
    }

Driver={SQL Native Client};Server=myServerAddress;Database=myDataBase;Trusted_Connection=yes;

Driver={SQL Server};Server=myServerAddress;Database=myDataBase;Trusted_Connection=Yes;