QueryAccessibilityHelpEventArgs.HelpNamespace QueryAccessibilityHelpEventArgs.HelpNamespace QueryAccessibilityHelpEventArgs.HelpNamespace QueryAccessibilityHelpEventArgs.HelpNamespace Property

定义

获取或设置指定帮助文件的名称的值。Gets or sets a value specifying the name of the Help file.

public:
 property System::String ^ HelpNamespace { System::String ^ get(); void set(System::String ^ value); };
public string HelpNamespace { get; set; }
member this.HelpNamespace : string with get, set
Public Property HelpNamespace As String

属性值

帮助文件的名称。The name of the Help file. 名称形式可以是 C:\path\sample.chm 或 /folder/file.htm。This name can be in the form C:\path\sample.chm or /folder/file.htm.

示例

下面的代码示例演示如何使用此成员。The following code example demonstrates the use of this member. 在此示例中, 事件处理程序报告Control.QueryAccessibilityHelp事件的发生。In the example, an event handler reports on the occurrence of the Control.QueryAccessibilityHelp event. 此报表可帮助你了解何时发生事件, 并可帮助你进行调试。This report helps you to learn when the event occurs and can assist you in debugging. 若要报告多个事件或频繁发生的事件, 请考虑MessageBox.ShowConsole.WriteLine消息替换为多行或将TextBox其追加到多行。To report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.

若要运行示例代码, 请将其粘贴到一个项目中, 该项目包含从Control继承的类型的实例, 如ComboBox Button或。To run the example code, paste it into a project that contains an instance of a type that inherits from Control, such as a Button or ComboBox. 然后命名该实例Control1 , 并确保事件处理程序Control.QueryAccessibilityHelp与事件相关联。Then name the instance Control1 and ensure that the event handler is associated with the Control.QueryAccessibilityHelp event.

private void Control1_QueryAccessibilityHelp(Object sender, QueryAccessibilityHelpEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "HelpNamespace", e.HelpNamespace );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "HelpString", e.HelpString );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "HelpKeyword", e.HelpKeyword );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "QueryAccessibilityHelp Event" );
}
Private Sub Control1_QueryAccessibilityHelp(sender as Object, e as QueryAccessibilityHelpEventArgs) _ 
     Handles Control1.QueryAccessibilityHelp

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "HelpNamespace", e.HelpNamespace)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "HelpString", e.HelpString)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "HelpKeyword", e.HelpKeyword)
    messageBoxVB.AppendLine()
    MessageBox.Show(messageBoxVB.ToString(),"QueryAccessibilityHelp Event")

End Sub

适用于

另请参阅