/// <summary>
/// This is called to check whether the user has assigned an event handler to
/// catch data modification.
/// </summary>
/// <returns></returns>
private bool target_CanModifyData(Control aSubject)
{
bool result = true;
//I love how you can get round most C# limitations with a second variable of the same
//type pointing to the same reference.
BeforeDataModificationDelegate BeforeValueModified = target.GetBeforeValueModified();
if (BeforeValueModified != null)
{
BeforeDataModification e = new BeforeDataModification(aSubject);
BeforeValueModified(this, e);
result = e.AllowChange;
}
if (!result)
{
Revert(); //go back to what we had before (this will probably screw up the modified state..)
}
return(result);
}
protected virtual void BeforeValueModified(object sender, BeforeDataModification e)
{
}
private void mo_BeforeValueModified(object sender, BeforeDataModification e)
{
BeforeValueModified(sender, e);
}