我可以禁用c#中的下拉列表中的项目吗？
For example, I have 2 dropdownlist combobox. Both of them consist of months (jan, feb, mar, apr, etc....) and both of them will function like a range of month in a certain year. When I choose apr on the 1st combobox, the second combobox can t choose jan, feb, mar
是的，你可以。
您的下拉列表中的ListItem具有已启用属性。您可以将其设置为false以禁用它们。
编辑：
很抱歉，我假设您使用的是WebForms（ASP.Net）。对于windows表单，您可以查看以下答案：使用不可选择的项创建WinForms组合框-原理相同，但有一些轻微的实现细节，因为组合框items集合是对象之一。Dropdownlist（等效的Web表单）使用类型化的ListItem对象。
高。
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