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我一直在查看工具箱,但似乎找不到轨迹栏控件。
它隐藏在某个地方吗?或者它只是在设计器上不可用,而是我必须对其进行编码?
查看所有 Windows 窗体工具箱:
右键单击Controls面板并选择Choose Items ...。
Controls
Choose Items ...
然后您可以向下滚动以选择它并确保它已启用。