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ValidationExtensions.ValidationMessageFor<TModel, TProperty> Method (HtmlHelper<TModel>, Expression<Func<TModel, TProperty>>, String, Object)

Returns the HTML markup for a validation-error message for each data field that is represented by the specified expression, using the specified message and HTML attributes.

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

public static MvcHtmlString ValidationMessageFor<TModel, TProperty>(
	this HtmlHelper<TModel> htmlHelper,
	Expression<Func<TModel, TProperty>> expression,
	string validationMessage,
	Object htmlAttributes
)

Type Parameters

TModel

The type of the model.

TProperty

The type of the property.

Parameters

htmlHelper
Type: System.Web.Mvc.HtmlHelper<TModel>

The HTML helper instance that this method extends.

expression
Type: System.Linq.Expressions.Expression<Func<TModel, TProperty>>

An expression that identifies the object that contains the properties to render.

validationMessage
Type: System.String

The message to display if the specified field contains an error.

htmlAttributes
Type: System.Object

An object that contains the HTML attributes for the element.

Return Value

Type: System.Web.Mvc.MvcHtmlString
If the property or object is valid, an empty string; otherwise, a span element that contains an error message.

Usage Note

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

Client validation must be enabled.

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