private ValidationResult ViewModelValid(object value, ValidationContext validationContext)
{
using (var db = new AppDbContext())
{
var Name = TargetPropertyName;
PropertyInfo IdProp = TargetModelType.GetProperties().FirstOrDefault(x => x.CustomAttributes.Count(a => a.AttributeType == typeof(KeyAttribute)) > 0) ?? TargetModelType.GetProperties().FirstOrDefault();
int Id = (int)validationContext.ObjectInstance.GetType().GetProperty(IdProp.Name).GetValue(validationContext.ObjectInstance, null);
//int Id = (int)IdProp.GetValue(validationContext.ObjectInstance, null);
Type entityType = TargetModelType;
var result = db.Set(entityType).Where(Name + "==@0", value);
int count = 0;
if (Id > 0)
{
result = result.Where(IdProp.Name + "<>@0", Id);
}
count = result.Count();
if (count == 0)
{
return(ValidationResult.Success);
}
else
{
return(new ValidationResult(ErrorMessageString));
}
}
}
private ValidationResult ViewModelValid(object value, ValidationContext validationContext)
{
if (validationContext.ObjectType.FullName == "SSProductCatalogWebApp.Models.EditProductViewModels")
{
return(ValidationResult.Success);
}
else
{
using (ProductCatalogEntities db = new ProductCatalogEntities()) {
var Name = TargetPropertyName;
PropertyInfo IdProp = TargetModelType.GetProperties()[1];
var code = validationContext.ObjectInstance.GetType().GetProperty(IdProp.Name).GetValue(validationContext.ObjectInstance, null);
Type entityType = TargetModelType;
var result = db.Set(entityType).Where(Name + "==@0", value);
int count = 0;
if (code != null)
{
result = result.Where(IdProp.Name + "==@0", code);
}
count = result.Count();
if (count > 0)
{
return(new ValidationResult(ErrorMessageString));
}
else
{
return(ValidationResult.Success);
}
}
}
}
