arcengine 获得lic 信息

private void button1_Click(object sender, EventArgs e)
{

ESRI.ArcGIS.esriSystem.IAoInitialize aoInitialize = new ESRI.ArcGIS.esriSystem.AoInitializeClass();
ESRI.ArcGIS.esriSystem.ILicenseInformation licenseInformation = (ESRI.ArcGIS.esriSystem.ILicenseInformation)aoInitialize;

System.String string_Licenses = null;
try
{

ESRI.ArcGIS.esriSystem.esriLicenseProductCode licenseProductCode = aoInitialize.InitializedProduct();
System.String string_LicenseProductName = licenseInformation.GetLicenseProductName(licenseProductCode);

string_Licenses = "This application is initialized with the following product license:" + System.Environment.NewLine + string_LicenseProductName + System.Environment.NewLine + "This application has the following extension licenses checked out:";

ESRI.ArcGIS.esriSystem.ILicenseInfoEnum licenseInfoEnum = licenseInformation.GetProductExtensions(licenseProductCode);

licenseInfoEnum.Reset();

ESRI.ArcGIS.esriSystem.esriLicenseExtensionCode licenseExtensionCode = licenseInfoEnum.Next();

while (!(System.Convert.ToInt32(licenseExtensionCode) == -1))
{

if (aoInitialize.IsExtensionCheckedOut(licenseExtensionCode) == true)
{
System.String string_LicenseExtensionName = licenseInformation.GetLicenseExtensionName(licenseExtensionCode);
string_Licenses = string_Licenses + System.Environment.NewLine + string_LicenseExtensionName;
}

licenseExtensionCode = licenseInfoEnum.Next();

}
System.Windows.Forms.MessageBox.Show(string_Licenses);

}
catch (System.Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.ToString());

}

}