protected override void CacheMetadata(CodeActivityMetadata metadata)
{
this.targetArgument = null;
if (string.IsNullOrEmpty(this.ArgumentName))
{
metadata.AddValidationError(System.Activities.SR.ArgumentNameRequired);
}
else
{
this.targetArgument = ActivityUtilities.FindArgument(this.ArgumentName, this);
if (this.targetArgument == null)
{
metadata.AddValidationError(System.Activities.SR.ArgumentNotFound(this.ArgumentName));
}
else if (this.targetArgument.Type != typeof(T))
{
metadata.AddValidationError(System.Activities.SR.ArgumentTypeMustBeCompatible(this.ArgumentName, this.targetArgument.Type, typeof(T)));
}
}
}