public static ValidationResult ValidateUnique(object o, ValidationContext c)
{
#if SILVERLIGHT
//Do actual validation client-side:
MyObject mo = c.ObjectInstance as mo; //Object we are checking is type MyObject
MyDS ctx = new MyDS; //Domain Service
System.ServiceModel.DomainServices.Client.InvokeOperation <bool>
isUnique = //some invoke operation in Domain Service;
isUnique.Completed += (s, e) =>
{
if (!isUnique.HasError && !isUnique.Value)
{
//return error;
mo.ValidationErrors.Add(error);
}
};
#endif
//Server-side always returns success:
return(ValidationResult.Success);
}
protected override void OnSaveCompleted(System.ServiceModel.DomainServices.Client.InvokeOperation <string> geted)
{
this.ResetResult();
base.OnSaveCompleted(geted);
}