PropertyValueChangedEventArgs PropertyValueChangedEventArgs PropertyValueChangedEventArgs PropertyValueChangedEventArgs Class


PropertyGridPropertyValueChanged 事件提供数据。Provides data for the PropertyValueChanged event of a PropertyGrid.

public ref class PropertyValueChangedEventArgs : EventArgs
public class PropertyValueChangedEventArgs : EventArgs
type PropertyValueChangedEventArgs = class
    inherit EventArgs
Public Class PropertyValueChangedEventArgs
Inherits EventArgs


下面的代码示例演示如何使用此类型。The following code example demonstrates the use of this type. 在示例中,事件处理程序报告的匹配项PropertyValueChanged事件。In the example, an event handler reports on the occurrence of the PropertyValueChanged event. 此报告可帮助您了解事件发生的并可以帮助您进行调试。This report helps you to learn when the event occurs and can assist you in debugging. 若要报告或频繁发生的事件上多个事件,请考虑更换ShowConsole.WriteLine或将消息附加到多行TextBoxTo report on multiple events or on events that occur frequently, consider replacing Show with Console.WriteLine or appending the message to a multiline TextBox.

若要运行此代码示例,请将其粘贴到包含类型的实例的项目PropertyGrid名为PropertyGrid1To run the example code, paste it into a project that contains an instance of type PropertyGrid named PropertyGrid1. 然后,确保事件处理程序相关联PropertyValueChanged事件。Then ensure that the event handler is associated with the PropertyValueChanged event.

private void PropertyGrid1_PropertyValueChanged(Object sender, PropertyValueChangedEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "ChangedItem", e.ChangedItem );
messageBoxCS.AppendFormat("{0} = {1}", "OldValue", e.OldValue );
MessageBox.Show(messageBoxCS.ToString(), "PropertyValueChanged Event" );
Private Sub PropertyGrid1_PropertyValueChanged(sender as Object, e as PropertyValueChangedEventArgs) _ 
     Handles PropertyGrid1.PropertyValueChanged

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "ChangedItem", e.ChangedItem)
    messageBoxVB.AppendFormat("{0} = {1}", "OldValue", e.OldValue)
    MessageBox.Show(messageBoxVB.ToString(),"PropertyValueChanged Event")

End Sub


PropertyValueChanged事件发生时用户更改的属性,它指定为值GridItem,请在PropertyGridThe PropertyValueChanged event occurs when the user changes the value of a property, which is specified as a GridItem, in a PropertyGrid.

有关处理事件的详细信息,请参阅处理和引发事件For more information about handling events, see Handling and Raising Events.


PropertyValueChangedEventArgs(GridItem, Object) PropertyValueChangedEventArgs(GridItem, Object) PropertyValueChangedEventArgs(GridItem, Object) PropertyValueChangedEventArgs(GridItem, Object)

初始化 PropertyValueChangedEventArgs 类的新实例。Initializes a new instance of the PropertyValueChangedEventArgs class.


ChangedItem ChangedItem ChangedItem ChangedItem

获取GridItem已更改。Gets the GridItem that was changed.

OldValue OldValue OldValue OldValue

网格项在更改前的值。The value of the grid item before it was changed.


Equals(Object) Equals(Object) Equals(Object) Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

作为默认哈希函数。Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

获取当前实例的 TypeGets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(Inherited from Object)