用IFeatureWorkspaceAnno.CreateAnnotationClass 创建注记图层时报“The application is not licensed to modify or create schema”的错误的解决方案。

用IFeatureWorkspaceAnno.CreateAnnotationClass 的方法创建注记图层的时候报“The application is not licensed to modify or create schema”的错误。

下面是测试代码：

public ESRI.ArcGIS.Geodatabase.IFeatureClass CreateFeatureClass(IFeatureLayer fLyr,double referenceScale, IWorkspace2 workspace,IFeatureDataset featureDataset, String featureClassName,IFields fields,
ESRI.ArcGIS.esriSystem.UID CLSID, ESRI.ArcGIS.esriSystem.UID CLSEXT, System.String strConfigKeyword)
 {

if (featureClassName == "") return null; // name was not passed in

ESRI.ArcGIS.Geodatabase.IFeatureClass featureClass = null;

IFeatureWorkspaceAnno annoFWorkspace = workspace as IFeatureWorkspaceAnno;

ESRI.ArcGIS.Geodatabase.IFeatureWorkspace featureWorkspace = (ESRI.ArcGIS.Geodatabase.IFeatureWorkspace)workspace; // Explicit Cast

if (workspace.get_NameExists(ESRI.ArcGIS.Geodatabase.esriDatasetType.esriDTFeatureClass, featureClassName))
      {
           featureClass = featureWorkspace.OpenFeatureClass(featureClassName);
           return featureClass;
      }

ISymbolCollection2 symbolCol=new SymbolCollectionClass ();
            IAnnotateLayerPropertiesCollection annoLPColl=new AnnotateLayerPropertiesCollectionClass ();
            InnitAnno(fLyr,ref symbolCol ,ref annoLPColl);

IGraphicsLayerScale glScal=new GraphicsLayerScaleClass ();
            glScal .ReferenceScale =referenceScale;

            IFeatureClassDescription fcDescription = new AnnotationFeatureClassDescriptionClass();

ESRI.ArcGIS.Geodatabase.IObjectClassDescription objectClassDescription = fcDescription as IObjectClassDescription;

featureClass = annoFWorkspace.CreateAnnotationClass(featureClassName, objectClassDescription.RequiredFields,                                    objectClassDescription.InstanceCLSID, objectClassDescription.ClassExtensionCLSID,
             fcDescription.ShapeFieldName, null, featureDataset, fLyr.FeatureClass, annoLPColl, glScal, symbolCol, true);

AlterSpatialReference(featureClass, (fLyr.FeatureClass as IGeoDataset).SpatialReference)

return featureClass;
   }

报错原因：

在创建注记图层、对SDE里数据进行编辑时，以及需要在SDE和Personal Geodatabase中创建复杂ArcGIS对象时时候需要ArcGIS Engine Enterprise Geodatabase（以下简称GDB Update）许可，但在一般情况下，我们会用将LicenseControl拖放到主窗体上完成初始化。但当Engine程序需要使用ArcGIS Engine Enterprise Geodatabase（以下简称GDB Update）许可的时候，我们就往往会由于意识不到应该使用该许可，以及无法正确的初始化该许可而陷入麻烦。

解决方案：

第一种：使用LicenseControl控件。将该控件拖放到主窗体之上，勾选适当的许可，并确保程序启动该窗体可加载，就可以完成许可初始化。如下图：

第二种：

使用IAoInitialize.Initialize方法加入适当的参数进行初始化。

C#代码如下：

private static bool CheckLicenses()
{
       //绑定权限
       ESRI.ArcGIS.RuntimeManager.Bind(ESRI.ArcGIS.ProductCode.EngineOrDesktop);

//初始化权限
       IAoInitialize m_AoInitialize =new AoInitializeClass();

//Create a new AoInitialize object
       if (m_AoInitialize == null)
       {
                MessageBox.Show("初始化授权失败", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
               return false;
       }
      //Determine if the product is available
      esriLicenseStatus licenseStatus =                    (esriLicenseStatus)m_AoInitialize.IsProductCodeAvailable(esriLicenseProductCode.esriLicenseProductCodeEngineGeoDB);
       if (licenseStatus == esriLicenseStatus.esriLicenseAvailable)
       {
           licenseStatus = (esriLicenseStatus)m_AoInitialize.Initialize(esriLicenseProductCode.esriLicenseProductCodeEngineGeoDB);
           if (licenseStatus != esriLicenseStatus.esriLicenseCheckedOut)
          {
               MessageBox.Show("初始化授权失败,程序退出！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return false;
          }
      }
      else
      {
           MessageBox.Show("ArcEngine授权无效,程序退出！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
           return false;
      }
       return true;
   }