我正在使用通用數據類,所以我不能使用ria服務屬性來控制我的驗證 - 所以我正在尋找一種方法來設置驗證以在DataForm中工作。DataForm中的Silverlight MVVM驗證
public partial class DataValue
{
private Dictionary<string, string> _errors = new Dictionary<string, string>();
public Dictionary<string, string> Errors
{
get { return _errors; }
}
public Object Value
{
get
{
object result = new object();
switch ((DataType)this.ModelEntity.ModelItem.DataType)
{
case DataType.Money:
return result = this.ValueText.ParseNullableFloat();
case DataType.Integer:
return result = this.ValueText.ParseNullableInt();
case DataType.Date:
case DataType.Time:
return result = this.ValueText.ParseNullableDateTime();
case DataType.CheckBox:
return result = this.ValueText;
default:
return result = this.ValueText;
}
}
set
{
if (!String.IsNullOrEmpty(value.ToString()))
{
bool invalid = false;
switch ((DataType)this.ModelEntity.ModelItem.DataType)
{
case DataType.Money:
float val;
if (!float.TryParse(value.ToString(), out val)) invalid = true;
break;
case DataType.Integer:
int val2;
if (!Int32.TryParse(value.ToString(), out val2)) invalid = true;
break;
case DataType.Date:
case DataType.Time:
DateTime val3;
if (!DateTime.TryParse(value.ToString(), out val3)) invalid = true;
break;
}
if (invalid == false)
ValueText = value.ToString();
else
{
ValueText = "";
_errors.Add(this.ModelEntity.LocalName, "error writing " + value.ToString() + " to " + this.ModelEntity.ModelItem.Label);
}
}
else
ValueText = "";
}
}
公共部分類ModelValidater:INotifyPropertyChanging,在ASP MVC INotifyPropertyChanged的 {
private static PropertyChangingEventArgs emptyChangingEventArgs = new PropertyChangingEventArgs(String.Empty);
private int _ModelValidatorId;
private int _ModelEntityId;
private int _ValidatorType;
private string _ValidatorParameters;
所以,我只是手動對這些規則時提交表單......我猜檢查是相當多我想在MVVM中做什麼(我只是不確定最好的方式去做這件事)。
ASP代碼
protected bool ModelErrors(RecordDictionary record)
{
bool result = false;
foreach (var field in record)
{
foreach (var error in field.Value.Errors)
{
result = true;
ModelState.AddModelError(error.Key + "Validation", error.Value.ToString());
}
}
return result;
}