Question

C# Control ctsp = con as ToolStripMenuItem;

RT
错误 2 无法通过引用转换、装箱转换、取消装箱转换、包装转换或 null 类型转换将类型“System.Windows.Forms.Control”转换为“System.Windows.Forms.ToolStripMenuItem”
如何解决，求大神

Answer 1

System.Windows.Forms.ToolStripMenuItem类继承层次结构
System.Object
System.MarshalByRefObject
System.ComponentModel.Component
System.Windows.Forms.ToolStripItem
System.Windows.Forms.ToolStripDropDownItem
System.Windows.Forms.ToolStripMenuItem

System.Windows.Forms.Control 类继承层次结构
System.Object
System.MarshalByRefObject
System.ComponentModel.Component
System.Windows.Forms.Control
ToolStripMenuItem不继承自System.Windows.Forms.Control，它们确实无法互相转换啊,