// Ensure that an item over $100 is available for at least 7 days.
public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
BindingGroup bg = value as BindingGroup;
// Get the source object.
PurchaseItem item = bg.Items[0] as PurchaseItem;
object doubleValue;
object dateTimeValue;
// Get the proposed values for Price and OfferExpires.
bool priceResult = bg.TryGetValue(item, "Price", out doubleValue);
bool dateResult = bg.TryGetValue(item, "OfferExpires", out dateTimeValue);
if (!priceResult || !dateResult)
{
return(new ValidationResult(false, "Properties not found"));
}
double price = (double)doubleValue;
DateTime offerExpires = (DateTime)dateTimeValue;
// Check that an item over $100 is available for at least 7 days.
if (price > 100)
{
if (offerExpires < DateTime.Today + new TimeSpan(7, 0, 0, 0))
{
return(new ValidationResult(false, "Items over $100 must be available for at least 7 days."));
}
}
return(ValidationResult.ValidResult);
}
public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
BindingGroup bg = (BindingGroup)value;
ZahnerXandY xy = (ZahnerXandY)bg.Items[0];
object objValue = null;
if (!bg.TryGetValue(xy, "NumX", out objValue))
{
return(new ValidationResult(false, "NumX is null."));
}
int NumX;
if (!Int32.TryParse(objValue as string, out NumX))
{
return(new ValidationResult(false, "NumX isn't a whole number."));
}
if (!bg.TryGetValue(xy, "NumY", out objValue))
{
return(new ValidationResult(false, "NumY is null."));
}
int NumY;
if (!Int32.TryParse(objValue as string, out NumY))
{
return(new ValidationResult(false, "NumY isn't a whole number."));
}
if (NumX >= NumY + 20 || NumX <= NumY - 20)
{
return(new ValidationResult(true, ""));
}
else
{
return(new ValidationResult(false, "not 20 apart."));
}
/*
*
* int numX = int.Parse(tbNumX.ToString());
* int numY = int.Parse(tbNumY.ToString());
*
*/
}
public override ValidationResult Validate(object value,
System.Globalization.CultureInfo cultureInfo)
{
// 特定のフィールド値ではなく, BindingGroup が入ってくる
BindingGroup bg = value as BindingGroup;
if (bg == null)
{
return(new ValidationResult(false,
"internal error: BindingGroup object is invalid."));
}
if (bg.Items.Count != 1)
{
return(new ValidationResult(false, "internal error: BindingGroup.Items invalid."));
}
// Get the source object.
MyViewModel data = bg.Items[0] as MyViewModel;
if (data == null)
{
return(new ValidationResult(false, "internal error: Data is not a MyViewModel."));
}
object combo1, combo2;
// POINT!: Commit される前のデータを得る.
bool r1 = bg.TryGetValue(data, "Combo1", out combo1);
bool r2 = bg.TryGetValue(data, "Combo2", out combo2);
if (!r1 || !r2)
{
return(new ValidationResult(false, "internal error: Properties not found"));
}
if (Convert.ToInt32(combo1) == Convert.ToInt32(combo2))
{
return(new ValidationResult(false, "Combo1 & 2 must not be same"));
}
// OK.
return(ValidationResult.ValidResult);
}
public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
string result = string.Empty;
BindingGroup bindingGroup = (BindingGroup)value;
foreach (var item in bindingGroup.Items.OfType <T>())
{
Type type = item.GetType();
// First we find all properties that have attributes.
foreach (var propertyInfo in type.GetProperties())
{
foreach (var attribute in Attribute.GetCustomAttributes(propertyInfo, true))
{
// We continue if we found a data annotation
if (attribute is System.ComponentModel.DataAnnotations.ValidationAttribute validationAttribute)
{
if (bindingGroup.TryGetValue(item, propertyInfo.Name, out object itemValue))
{
if (itemValue == DependencyProperty.UnsetValue)
{
itemValue = null;
}
// We set the error message if the validation of the property fails.
if (!validationAttribute.IsValid(itemValue))
{
if (!string.IsNullOrWhiteSpace(result))
{
result += Environment.NewLine;
}
if (string.IsNullOrEmpty(validationAttribute.ErrorMessage))
{
result += string.Format("Validation on {0} failed!", propertyInfo.Name);
}
else
{
result += validationAttribute.ErrorMessage;
}
}
}
}
}
}
}
if (!string.IsNullOrWhiteSpace(result))
{
return(new ValidationResult(false, result));
}
else
{
return(ValidationResult.ValidResult);
}
}
public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
BindingGroup bindingGroup = (BindingGroup)value;
if (bindingGroup.Items.Count > 0)
{
AbsM.GroupM group = bindingGroup.Items[0] as AbsM.GroupM;
if (group != null)
{
object groupText = null;
bindingGroup.TryGetValue(group, "Text", out groupText);
if (!String.IsNullOrEmpty((String)(groupText)))
{
return(ValidationResult.ValidResult);
}
else
{
return(new ValidationResult(false, "Название группы в пользовательском интерфейсе не должно быть пустым"));
}
}
}
return(ValidationResult.ValidResult);
}
public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
BindingGroup bindingGroup = (BindingGroup)value;
if (bindingGroup.Items.Count > 0)
{
RasM.RastTableBaseM rastrLayer = (RasM.RastTableBaseM)(bindingGroup.Items[0]);
RasVM.RastrDataRepositoryVM rastrRepo = rastrLayer.Source as RasVM.RastrDataRepositoryVM;
Object filePathObject = null;
if (bindingGroup.TryGetValue(rastrLayer, "FilePath", out filePathObject))
{
String filePath = Convert.ToString(filePathObject);
bool fileExists = false;
fileExists = filePath != "" && System.IO.File.Exists(filePath);
if (!fileExists)
{
if (filePath.StartsWith("."))
{
filePath = System.Windows.Forms.Application.StartupPath + "\\" + filePath.TrimStart(new char[] { '.', '\\' });
if (System.IO.File.Exists(filePath))
{
fileExists = true;
}
}
}
if (!fileExists)
{
return(new ValidationResult(false, "Путь к файлу задан неправильно"));
}
else
{
foreach (var iTable in rastrRepo.Tables)
{
RasM.RastTableBaseM rastrTable = iTable as RasM.RastTableBaseM;
if (rastrTable != rastrLayer && rastrTable.FilePath == filePath)
{
return(new ValidationResult(false,
"В системе уже присутствует растровый слой который указывает на этот файл"));
}
}
}
}
else
{
return(new ValidationResult(false, "Не задано свойство \"Путь к файлу\""));
}
String rastrName = (String)bindingGroup.GetValue(rastrLayer, "Text");
if (String.IsNullOrEmpty(rastrName.Trim()))
{
return(new ValidationResult(false, "Не задано название растрового слоя"));
}
bool rastrNameExists =
(from AbsM.TableBaseM rastrTable in rastrRepo.Tables where (rastrTable.Text == rastrName && rastrLayer != rastrTable) select rastrTable).Count() > 0;
if (rastrNameExists)
{
return(new ValidationResult(false, "Слой с таким названием уже существует"));
}
BooleanYesNoConverter boolYesNo = new BooleanYesNoConverter();
bool useBounds = Convert.ToBoolean(boolYesNo.ConvertBack(bindingGroup.GetValue(rastrLayer, "UseBounds"), null, null, null));
object minScaleObj = bindingGroup.GetValue(rastrLayer, "MinScale");
object maxScaleObj = bindingGroup.GetValue(rastrLayer, "MaxScale");
int minScale = -1;
int maxScale = -1;
try
{
minScale = Convert.ToInt32(minScaleObj);
}
catch (Exception ex)
{
String mes = "Ошибка в значении нижней границы масштаба: \n" + ex.Message;
return(new ValidationResult(false, mes));
}
try
{
maxScale = Convert.ToInt32(maxScaleObj);
}
catch (Exception ex)
{
String mes = "Ошибка в значении верхней границы масштаба: \n" + ex.Message;
return(new ValidationResult(false, mes));
}
if (useBounds)
{
if (minScale < 0)
{
return(new ValidationResult(false, "Минимальное значение не может быть отрицательным числом"));
}
if (maxScale < 0)
{
return(new ValidationResult(false, "Максимальное значение не может быть отрицательным числом"));
}
if (minScale > maxScale)
{
return(new ValidationResult(false, "Минимальное значение не может быть больше максимального"));
}
}
return(ValidationResult.ValidResult);
}
else
{
return(new ValidationResult(false, "Не выбран объект для отображения"));
}
}
