Controller.TryUpdateModel(Of TModel) Method (TModel, String, String(), IValueProvider)

Updates the specified model instance using values from the value provider, a prefix, and included properties.

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

Protected Friend Function TryUpdateModel(Of TModel As Class) ( _
	model As TModel, _
	prefix As String, _
	includeProperties As String(), _
	valueProvider As IValueProvider _
) As Boolean
Dim model As TModel
Dim prefix As String
Dim includeProperties As String()
Dim valueProvider As IValueProvider
Dim returnValue As Boolean

returnValue = Me.TryUpdateModel(model, _
	prefix, includeProperties, valueProvider)

Type Parameters


The type of the model object.


Type: TModel
The model instance to update.
Type: System.String
The prefix to use when looking up values in the value provider.
Type: System.String()
A list of properties of the model to update.
Type: System.Web.Mvc.IValueProvider
A dictionary of values that is used to update the model.

Return Value

Type: System.Boolean
true if the update is successful; otherwise, false.

You do not have to explicitly specify the generic parameter TModel. Instead, you can let the C# or Visual Basic type inference engine determine the generic parameter TModel by omitting the generic parameter. The [Overload:System.Web.Mvc.Controller.TryUpdateModel``1] method is like the [Overload:System.Web.Mvc.Controller.UpdateModel``1] method except that the [Overload:System.Web.Mvc.Controller.TryUpdateModel``1] method does not throw an InvalidOperationException exception if the updated model state is not valid.

For more information model validation, see the entry Input Validation vs. Model Validation in ASP.NET MVC on Brad Wilson's blog.