AddingNewEventArgs.NewObject 属性

定义

命名空间:

System.ComponentModel

程序集:

System.ComponentModel.TypeConverter.dll

Source:

AddingNewEventArgs.cs

获取或设置要添加到绑定列表的对象。

public:
 property System::Object ^ NewObject { System::Object ^ get(); void set(System::Object ^ value); };

public object? NewObject { get; set; }

member this.NewObject : obj with get, set

Public Property NewObject As Object

属性值

Object

要作为新项添加到关联的集合中的 Object。

示例

下面的代码示例演示如何使用 AddingNewEventArgs 类来处理 BindingSource.AddingNew 事件。 此代码示例是How to： Customize Item Addition with the Windows 窗体 BindingSource中提供的更大示例的一部分。

// 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

注解

如果 属性 NewObject 设置为 null，则表示集合将执行标准操作，这通常需要使用其无参数构造函数创建适当类型的对象，然后将其添加到集合中。

另请参阅

• AddingNewEventHandler