如何检查是否从 C# 中的组合框中选择了项目 [英] how to check if item is selected from a comboBox in C#

问题描述

我是新来的.

我有一个表格，想检查用户是否正确填写.在表单中有一个组合框；我如何构建if"语句来检查用户是否从中选择了一个项目?

I have a form, and want to check if the user filled it in correctly. In the form there's a combo box; how can I build the "if" statement for checking whether the user picked an item from it ?

附言抱歉我的英语不好，这不是我的母语.:)

P.S. Sorry for my bad English, it's not my mother tongue. :)

推荐答案

使用:

if(comboBox.SelectedIndex > -1) //somthing was selected

要获取所选项目，您可以:

To get the selected item you do:

Item m = comboBox.Items[comboBox.SelectedIndex];

正如马修正确指出的，要获得所选项目，您也可以这样做

As Matthew correctly states, to get the selected item you could also do

Item m = comboBox.SelectedItem;

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