public void Save(ref Comment obj)
{
if (obj != null)
{
if (obj.Id == 0)
{
// Add to collection
context.Comments.Add(obj);
}
else
{
// Map from original record
LoadOriginalFromDbAndMap(ref obj);
// Attach to collection
context.Comments.Attach(obj);
context.Entry(obj).State = System.Data.EntityState.Modified;
}
// Commit changes
var utility = new DbUtilities();
utility.SaveWithExpectedSuccess(context.SaveChanges());
}
}
private void LoadOriginalFromDbAndMap(ref Comment obj)
{
// Use utility for easier readability
var utility = new DbUtilities();
// Get original
var original = Get(obj.Id);
// Map if the value has changed
original.ResourceId = utility.Map(original.ResourceId, obj.ResourceId);
original.ContributorGuid = utility.Map(original.ContributorGuid, obj.ContributorGuid);
original.Text = utility.Map(original.Text, obj.Text);
// Set obj to new merged values (original)
obj = original;
}
