public static extern bool XcareSystemEnclosure(int EnclosureNumber,ref system_enclosure_type_3 t3);
 private void button1_Click_1(object sender, EventArgs e)
 {
     WMI_DLL.XcareInitSMBiosData();
     system_enclosure_type_3 t3 = new system_enclosure_type_3();
     WMI_DLL.XcareSystemEnclosure(1,ref t3);
     label_CM.Text = "manufacturer: " + t3.manufacturer.ToString();
     label_CT.Text = "Chassis type : " + Convert.ToInt16(t3.type);
     label_CV.Text = "Chassis version : " + t3.version.ToString();
     label_CS.Text = "Chassis Serial number : " + t3.serial_number;
     label_CA.Text = "Chassis Tag number : " + t3.asset_tag_number.ToString();
     label_CO.Text = "Chassis OEM value : " + t3.oem;
 }