你应该使用属性 System.Windows.Forms.ComboBox.Text ，这是当前在编辑区域中显示的值：

http://msdn.microsoft.com/en-us/library/system.windows.forms.combobox.aspx [ ^ ]，

http://msdn.microsoft.com/en-us/library/system.windows。 forms.combobox.text.aspx [ ^ ]。

-SA

You should use the property System.Windows.Forms.ComboBox.Text, which is the value currently presented in the edit area:
http://msdn.microsoft.com/en-us/library/system.windows.forms.combobox.aspx[^],
http://msdn.microsoft.com/en-us/library/system.windows.forms.combobox.text.aspx[^].

—SA