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ValidationExtensions.ValidationSummary Method (HtmlHelper)

Returns an unordered list (ul element) of validation messages that are in the ModelStateDictionary object.

Namespace:  System.Web.Mvc.Html
Assembly:  System.Web.Mvc (in System.Web.Mvc.dll)

public static MvcHtmlString ValidationSummary(
	this HtmlHelper htmlHelper
)

Parameters

htmlHelper
Type: System.Web.Mvc.HtmlHelper

The HTML helper instance that this method extends.

Return Value

Type: System.Web.Mvc.MvcHtmlString
A string that contains an unordered list (ul element) of validation messages.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type HtmlHelper. When you use instance method syntax to call this method, omit the first parameter. For more information, see https://msdn.microsoft.com/en-us/library/bb384936(v=vs.108).aspx or https://msdn.microsoft.com/en-us/library/bb383977(v=vs.108).aspx.

The ValidationSummary method displays a list of all validation messages on the page.

If the DefaultModelBinder instance cannot bind a form-field value to the model, the binder adds an error to the ModelState object. When the view is rendered, the validation messages and validation summary are displayed based on the Errors property of the ModelState object.

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