Adding an existing Feature class to an existing Feature Dataset in c#(arcobjects)

Question

I want to add an existing feature class to an existing feature dataset. Both the feature class and the dataset have the same coordinate system, I searched over the net but only assistance I found was to create a new feature class in a feature dataset (I tried that and it worked). According my understanding I tried using IDatasetContainer but it's not working. Here is the code:

IFeatureDataset featureDataset1 = featureWorkspace.OpenFeatureDataset("featureDataset1");
IDataset datasetFcTenActors = fc_tenActors as IDataset; // fc_tenActors is my feature class to add
IDatasetContainer container = featureDataset1 as IDatasetContainer;
container.AddDataset(datasetFcTenActors);

• Aditya: @DevdattaTengshe : thanks but I am able to do the same using arcmaps by simply copying the feature class and pasting into the feature dataset. Also there is already a line feature class present in the feature dataset which I created but not copy.
• Aditya: It doesn't change when I drag and drop but changes when I copy paste. I want to code the drag and drop into feature dataset.
• Devdatta Tengshe: ok.. Got it. I was misunderstanding your question.
• Devdatta Tengshe: What do you mean when you say that the code does not work?
• Aditya: @DevdattaTengshe : I tried the above code and gave COM exception "Exception from HRESULT: 0x8004022D" on the line - container.AddDataset(datasetFcTenActors)

Answer 1

Maybe the IFeatureDataConverter2.ConvertFeatureClass Method does what you need:

http://resources.arcgis.com/en/help/arcobjects-net/componenthelp/index.html#/d/0025000002w5000000.htm

It takes a source Featureclass Name and an Output featuredataset Name as Parameter.

Answer 2

The IDatasetContainer interface lets you move datasets between FeatureDatasets and Workspaces—both objects implement the interface. However, It should be used to move datasets between Feature Datasets within a single workspace, but not between workspaces. If you situation doesn't meet this precondition, follow Chris suggestion (IFeatureDataConverter2). Note that when moving feature classes into a feature dataset, the spatial reference of the source feature class must match the spatial reference of the target feature dataset.