[ArcEngine]IFeatureBuffer使用

 public static void LoadOnlyModeInsert(IFeatureClass featureClass, List < IGeometry >
     geometryList)
 {
     // Cast the feature class to the IFeatureClassLoad interface.
     IFeatureClassLoad featureClassLoad = (IFeatureClassLoad)featureClass;

     // Acquire an exclusive schema lock for the class.
     ISchemaLock schemaLock = (ISchemaLock)featureClass;
     try
     {
         schemaLock.ChangeSchemaLock(esriSchemaLock.esriExclusiveSchemaLock);

         // Enable load-only mode on the feature class.
         featureClassLoad.LoadOnlyMode = true;
         using(ComReleaser comReleaser = new ComReleaser())
         {
             // Create the feature buffer.
             IFeatureBuffer featureBuffer = featureClass.CreateFeatureBuffer();
             comReleaser.ManageLifetime(featureBuffer);

             // Create an insert cursor.
             IFeatureCursor insertCursor = featureClass.Insert(true);
             comReleaser.ManageLifetime(insertCursor);

             // All of the features to be created are classified as Primary Highways.
             int typeFieldIndex = featureClass.FindField("TYPE");
             featureBuffer.set_Value(typeFieldIndex, "Primary Highway");

             foreach (IGeometry geometry in geometryList)
             {
                 // Set the feature buffer's shape and insert it.
                 featureBuffer.Shape = geometry;
                 insertCursor.InsertFeature(featureBuffer);
             }

             // Flush the buffer to the geodatabase.
             insertCursor.Flush();
         }
     }
     catch (Exception)
     {
         // Handle the failure in a way appropriate to the application.
     }
     finally
     {
         // Disable load-only mode on the feature class.
         featureClassLoad.LoadOnlyMode = false;

         // Demote the exclusive schema lock to a shared lock.
         schemaLock.ChangeSchemaLock(esriSchemaLock.esriSharedSchemaLock);
     }
 }