protected void EnsureViewData()
{
if (_viewData != null)
{
return;
}
IViewDataContainer vdc = GetViewDataContainer(this);
if (vdc == null)
{
throw ViewError.ControlRequiresViewDataProvider();
}
ViewDataDictionary vd = vdc.ViewData;
if (!String.IsNullOrEmpty(_subDataKey))
{
ViewDataDictionary subViewData;
vdc.ViewData.SubDataItems.TryGetValue(_subDataKey, out subViewData);
vd = new ViewDataDictionary(subViewData);
vd.Model = subViewData.Model;
}
if (!String.IsNullOrEmpty(ViewDataKey))
{
ViewDataDictionary vdPart = new ViewDataDictionary();
vdPart.Model = vd[ViewDataKey];
vd = vdPart;
}
SetViewData(vd);
}
/// <summary>
/// Instantiates and initializes the Ajax, Html, and Url properties.
/// </summary>
public virtual void InitHelpers(ViewContext context)
{
Precondition.Require(context,
() => ViewError.ArgumentNull("context"));
SetContentType(context.Context);
_httpParameters = context.Context.Request.Parameters;
_html = new HtmlHelper(context);
_url = new UrlHelper(context);
_ajax = new AjaxHelper(context);
_validation = new ValidationHelper(context);
}
protected static TResult Wrap <TResult>(Func <TResult> func)
{
try
{
return(func());
}
catch (HttpException ex)
{
if (ex.GetHttpCode() == 500)
{
throw;
}
throw ViewError.ChildRequestExecutionError(ex);
}
}
