partial void DeleteActivity_Relay_ZongChengji(Activity_Relay_ZongChengji instance);
private void detach_Activity_Relay_ZongChengji(Activity_Relay_ZongChengji entity) { this.SendPropertyChanging(); entity.Activity_Relay = null; }
partial void InsertActivity_Relay_ZongChengji(Activity_Relay_ZongChengji instance);
private void attach_Activity_Relay_ZongChengji(Activity_Relay_ZongChengji entity) { this.SendPropertyChanging(); entity.Activity_Relay_Tag = this; }