/// <summary>
/// Base Method for Updating an Item in the DB Context.
/// </summary>
/// <typeparam name="TEntity">Type Parameter</typeparam>
/// <param name="entity">Entity to Update</param>
/// <returns>Resulting Entity</returns>
protected virtual TEntity Update <TEntity>(TEntity entity) where TEntity : class
{
var entry = ctx.Entry(entity);
IKey key = entry.Metadata.FindPrimaryKey();
List <object> keyValues = new List <object>();
foreach (IProperty prop in key.Properties)
{
PropertyInfo pi = prop.PropertyInfo;
keyValues.Add(pi.GetValue(entity));
}
var original = ctx.Find <TEntity>(keyValues.ToArray());
if (!entity.Equals(original))
{
ctx.Entry(original).CurrentValues.SetValues(entity);
}
ctx.SaveChanges();
return(ctx.Entry(entity).Entity);
}