Question

I have the following:

public void SaveChanges(Project project, int ParentId)
        {
//If not updating then insert
if (!UpdateMode)
            {
                //Insert New Project Else Simply Save Context Changes
                this.Context.Projects.Add(project);    
            }
//save all changes
            this.Context.SaveChanges();
}

The idea is that if I am in insert mode add a new project else I am in update mode and I need to simply save all of the changes. My project that gets passed in has the changes that were made in the web page but it does not get saved. shouldnt the following work?

public void SaveChanges(Project project, int ParentId)

Answer 1

The project coming in from the posted form is not attached to your object context. You need to attach it to the context.

public void SaveChanges(Project project, int ParentId)        {
    //If not updating then insert
    if (!UpdateMode)            {                
        //Insert New Project Else Simply Save Context Changes                
        this.Context.Projects.Add(project);                
    } else {
        this.Context.Attach(project);
        this.Context.ObjectStateManager.ChangeObjectState(project, EntityState.Modified);
    }
    //save all changes            
    this.Context.SaveChanges();
}