protected string RenderPackedList()
{
PackedList <IEnumerable <TValue>, TValue> displayModel = new PackedList <IEnumerable <TValue>, TValue>();
displayModel.ImportFromModel(Value, new object[] { DualSelect_Separator });
StringBuilder sb = new StringBuilder();
sb.Append(BasicHtmlHelper.RenderDisplayInfo(CurrHtmlHelper,
typeof(PackedList <IEnumerable <TValue>, TValue>),
Prefix));
sb.AppendFormat("<span {2} style='display:none' id='{1}' is-item-control='true' pname='{0}' data-element-type = 'DualSelect' ></span>", _fullprefix, BasicHtmlHelper.IdFromName(_fullprefix), BasicHtmlHelper.GetAttributesString(AttributeExtensions));
sb.Append(
CurrHtmlHelper.Hidden(BasicHtmlHelper.AddField(Prefix, "$.Separator"),
DualSelect_Separator, new RouteValueDictionary {
{ "data-elementispart", "true" }
})).ToString();
sb.Append(CurrHtmlHelper.Hidden(
BasicHtmlHelper.AddField(Prefix, "$.PackedValue"),
displayModel.PackedValue, new RouteValueDictionary {
{ "data-elementispart", "true" }
}));
return(sb.ToString());
}
public static MvcHtmlString PackedListFor <TModel, TValue>(
this HtmlHelper <TModel> htmlHelper,
Expression <Func <TModel, IEnumerable <TValue> > > expression, string separator, object attributes = null, bool useHidden = false, bool useTemplate = false, object template = null)
{
var fullPropertyPath =
htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(
ExpressionHelper.GetExpressionText(expression));
var propertyPath = ExpressionHelper.GetExpressionText(expression);
if (expression == null)
{
throw (new ArgumentNullException("expression"));
}
if (separator == null)
{
throw (new ArgumentNullException("separator"));
}
if (attributes == null)
{
attributes = new { }
}
;
IEnumerable <TValue> values = null;
try
{
values = expression.Compile().Invoke(htmlHelper.ViewData.Model);
}
catch { }
if (values == null)
{
values = new List <TValue>();
}
PackedList <IEnumerable <TValue>, TValue> displayModel = new PackedList <IEnumerable <TValue>, TValue>();
displayModel.ImportFromModel(values, new object[] { separator });
StringBuilder sb = new StringBuilder();
sb.Append(BasicHtmlHelper.RenderDisplayInfo(htmlHelper,
typeof(PackedList <IEnumerable <TValue>, TValue>),
propertyPath));
sb.Append(htmlHelper.Hidden(BasicHtmlHelper.AddField(propertyPath, "$.Separator"), separator)).ToString();
if (useTemplate)
{
if (template == null)
{
template = typeof(PackedList <IEnumerable <TValue>, TValue>).Name;
}
ViewDataDictionary <PackedList <IEnumerable <TValue>, TValue> > dataDictionary =
new ViewDataDictionary <PackedList <IEnumerable <TValue>, TValue> >(displayModel);
dataDictionary.TemplateInfo.HtmlFieldPrefix = BasicHtmlHelper.AddField(fullPropertyPath, "$");
sb.Append(new TemplateInvoker <PackedList <IEnumerable <TValue>, TValue> >(template)
.Invoke(htmlHelper, dataDictionary));
}
else
{
if (useHidden)
{
sb.Append(htmlHelper.Hidden(
BasicHtmlHelper.AddField(propertyPath, "$.PackedValue"),
displayModel.PackedValue,
attributes));
}
else
{
sb.Append(htmlHelper.TextBox(
BasicHtmlHelper.AddField(propertyPath, "$.PackedValue"),
displayModel.PackedValue,
attributes));
}
}
return(MvcHtmlString.Create(sb.ToString()));
}
}
