public static List <SelectListItem> GetSourceForComboBox(
PropertyMetaData property, object currentValue, IEnumerable source)
{
var result = GetSelectedListItems(property, source, currentValue);
if (LinqToSqlUtils.CanBeNull(property.Info))
{
result.Insert(0, _emtpySelectItem);
}
return(result);
}
public static bool Validate(ModelStateDictionary modelState, object obj)
{
var type = obj.GetType();
foreach (var propertyInfo in type.GetProperties())
{
var metaData = MvcApplication.MetaDataProvider.Get(type);
var value = propertyInfo.GetValue(obj);
var canBeNull = LinqToSqlUtils.CanBeNull(propertyInfo);
var isDefault = false;
var isForeign = LinqToSqlUtils.GetForeignProperty(type, propertyInfo.Name) != null;
if (value != null)
{
isDefault = Equals(value.GetType().Default(), value);
}
if (!canBeNull &&
(value == null || Equals(value, string.Empty) || (isForeign && isDefault)))
{
var displayName = metaData.GetProperties().First(x => x.Info == propertyInfo).DisplayName();
modelState.AddModelError(propertyInfo.Name,
ValidationMessages.notempty_error.Replace(
ValidationMessages.PropertyName,
displayName));
}
/* if(propertyInfo.Info.PropertyType == typeof(string))
* {
* var strValue = (string)value;
* if (strValue != null)
* {
* var maxLength = LinqToSqlUtil.GetMaxLength(
* propertyInfo.Info);
* if (maxLength > 0 && strValue.Length > maxLength)
* modelState.AddModelError(propertyInfo.Info.Name, "Поле <" +
* propertyInfo.DisplayName + "> не должно быть длиннее " +
* maxLength);
* }
*
* }*/
}
return(modelState.IsValid);
}
public static MvcHtmlString DropDownListFor <Tm, Tp, Ti>(this HtmlHelper <Tm> htmlHelper,
Expression <Func <Tm, Tp> > expression, IEnumerable <Ti> source,
Func <Ti, object> textSelector, Func <Ti, object> valueSelector,
IDictionary <string, object> htmlAttributes)
where Tm : class
{
var inputName = ExpressionHelper.GetInputName(expression);
// var local = GetValue(htmlHelper, expression);
var selectItemList = new List <SelectListItem>();
var propertyInfo =
((MemberExpression)(expression.Body)).Member as PropertyInfo;
if (LinqToSqlUtils.CanBeNull(propertyInfo))
{
selectItemList.Add(
new SelectListItem
{
Text = "Нет",
Value = string.Empty,
});
}
selectItemList.AddRange(SelectListUtil.GetSelectItemList(source, textSelector, valueSelector));
return(htmlHelper.DropDownList(inputName, selectItemList, htmlAttributes));
}