Delete a model directly under a project

To delete a model directly under a project, call the Delete method of the IModel object for the model obtained by Get models directly under a project.

public void DeleteRootModels(ICommandContext c, ICommandParams p) 
{ 
IProject project = c.App.Workspace.CurrentProject; 

//Get the design model root (root model in the model navigator) 
IModel designModel = project.DesignModel; 

//Get the models directly under the project 
IModelCollection rootModels = project.GetRootChildren(); 

foreach (IModel rootModel in rootModels.ToList()) 
{ 
rootModel.Delete(); 
} 
}