AddingNewEventArgs Class
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Provides data for the AddingNew event.
public ref class AddingNewEventArgs : EventArgs
public class AddingNewEventArgs : EventArgs
type AddingNewEventArgs = class
inherit EventArgs
Public Class AddingNewEventArgs
Inherits EventArgs
- Inheritance
The following code example demonstrates how to use the AddingNewEventArgs class to handle the BindingSource.AddingNew event. This code example is part of a larger example provided in How to: Customize Item Addition with the Windows Forms BindingSource.
// This event handler provides custom item-creation behavior.
void OnCustomersBindingSourceAddingNew(Object^ sender,
AddingNewEventArgs^ e)
{
e->NewObject = DemoCustomer::CreateNewCustomer();
}
// This event handler provides custom item-creation behavior.
void customersBindingSource_AddingNew(
object sender,
AddingNewEventArgs e)
{
e.NewObject = DemoCustomer.CreateNewCustomer();
}
' This event handler provides custom item-creation behavior.
Private Sub customersBindingSource_AddingNew( _
ByVal sender As Object, _
ByVal e As AddingNewEventArgs) _
Handles customersBindingSource.AddingNew
e.NewObject = DemoCustomer.CreateNewCustomer()
End Sub
The AddingNewEventArgs class provides data for the BindingSource.AddingNew event, which signals that an item is about to be added to a collection. The event gives the programmer, within the event handler AddingNewEventHandler, the option of supplying the new object by setting the NewObject property to this new item. If this property is not set, the collection will typically use the parameterless constructor of the appropriate type to construct a new item. In either case, the new item will be added to the collection.
If the collection also implements the ICancelAddNew interface, the item will be provisionally added, waiting a subsequent commit or rollback.
This event is commonly used in data-binding scenarios, within classes such as System.Windows.Forms.BindingSource and System.ComponentModel.BindingList<T>.
For more information about how to handle events, see Handling and Raising Events.
Adding |
Initializes a new instance of the AddingNewEventArgs class using no parameters. |
Adding |
Initializes a new instance of the AddingNewEventArgs class using the specified object as the new item. |
New |
Gets or sets the object to be added to the binding list. |
Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
Get |
Serves as the default hash function. (Inherited from Object) |
Get |
Gets the Type of the current instance. (Inherited from Object) |
Memberwise |
Creates a shallow copy of the current Object. (Inherited from Object) |
To |
Returns a string that represents the current object. (Inherited from Object) |
Product | Versions |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
.NET feedback
.NET is an open source project. Select a link to provide feedback: