Control.OnUnload(EventArgs) 方法

protected:
 virtual void OnUnload(EventArgs ^ e);

protected public:
 virtual void OnUnload(EventArgs ^ e);

protected virtual void OnUnload(EventArgs e);

protected internal virtual void OnUnload(EventArgs e);

abstract member OnUnload : EventArgs -> unit
override this.OnUnload : EventArgs -> unit

Protected Overridable Sub OnUnload (e As EventArgs)

Protected Friend Overridable Sub OnUnload (e As EventArgs)

// Override the OnUnLoad method to set _text to
// a default value if it is null.
protected override void OnUnload(EventArgs e)
{
    base.OnUnload(e);
    if (_text == null)
        _text = "Here is some default text.";
}

' Override the OnUnLoad method to set _text to
' a default value if it is null.
Protected Overrides Sub OnUnload(ByVal e As EventArgs)
    MyBase.OnUnload(e)
    If _text Is Nothing Then
        _text = "Here is some default text."
    End If
End Sub

ASP.NET 调用此方法来引发 Unload 事件。 如果要开发自定义控件，则可以替代此方法以提供其他处理。 如果重写此方法，请调用基控件的 OnUnload 方法来通知事件的订阅者。

• Unload
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