public static MvcHtmlString ValidationSummary(this HtmlHelper htmlHelper, bool excludePropertyErrors, string message, IDictionary <string, object> htmlAttributes)
{
if (htmlHelper == null)
{
throw new ArgumentNullException("htmlHelper");
}
FormContext formContext = htmlHelper.ViewContext.GetFormContextForClientValidation();
if (htmlHelper.ViewData.ModelState.IsValid)
{
if (formContext == null)
{
// No client side validation
return(null);
}
// TODO: This isn't really about unobtrusive; can we fix up non-unobtrusive to get rid of this, too?
if (htmlHelper.ViewContext.UnobtrusiveJavaScriptEnabled && excludePropertyErrors)
{
// No client-side updates
return(null);
}
}
string messageSpan;
if (!String.IsNullOrEmpty(message))
{
TagBuilder spanTag = new TagBuilder("span");
spanTag.SetInnerText(message);
messageSpan = spanTag.ToString(TagRenderMode.Normal) + Environment.NewLine;
}
else
{
messageSpan = null;
}
StringBuilder htmlSummary = new StringBuilder();
TagBuilder unorderedList = new TagBuilder("ul");
IEnumerable <ModelState> modelStates = GetModelStateList(htmlHelper, excludePropertyErrors);
foreach (ModelState modelState in modelStates)
{
foreach (ModelError modelError in modelState.Errors)
{
string errorText = GetUserErrorMessageOrDefault(htmlHelper.ViewContext.HttpContext, modelError, null /* modelState */);
if (!String.IsNullOrEmpty(errorText))
{
TagBuilder listItem = new TagBuilder("li");
listItem.SetInnerText(errorText);
htmlSummary.AppendLine(listItem.ToString(TagRenderMode.Normal));
}
}
}
if (htmlSummary.Length == 0)
{
htmlSummary.AppendLine(HiddenListItem);
}
unorderedList.InnerHtml = htmlSummary.ToString();
TagBuilder divBuilder = new TagBuilder("div");
divBuilder.MergeAttributes(htmlAttributes);
divBuilder.AddCssClass((htmlHelper.ViewData.ModelState.IsValid) ? HtmlHelper.ValidationSummaryValidCssClassName : HtmlHelper.ValidationSummaryCssClassName);
divBuilder.InnerHtml = messageSpan + unorderedList.ToString(TagRenderMode.Normal);
if (formContext != null)
{
if (htmlHelper.ViewContext.UnobtrusiveJavaScriptEnabled)
{
if (!excludePropertyErrors)
{
// Only put errors in the validation summary if they're supposed to be included there
divBuilder.MergeAttribute("data-valmsg-summary", "true");
}
}
else
{
// client val summaries need an ID
divBuilder.GenerateId("validationSummary");
formContext.ValidationSummaryId = divBuilder.Attributes["id"];
formContext.ReplaceValidationSummary = !excludePropertyErrors;
}
}
return(divBuilder.ToMvcHtmlString(TagRenderMode.Normal));
}
