如何找出组合框内是否有一些项目? [英] How to find out if combobox have some items inside?

问题描述

我在 C# 中有一个简单的 winforms 应用程序，它有两个控件:combobox1 和 button.当然，分别是ComboBox 和Button.我想知道 combobox1...

I have simple winforms application in C# which has two controls: combobox1 and button. Of course, a ComboBox and Button respectively. I would like to find out if there are any items in combobox1...

我已经试过了，但它只告诉我是否有选定的项目:

I have tried this, but it only tells me if there is a selected item:

if (combobox1.Text != ""))
{
    MessageBox.Show("Combo is not empty");
}

推荐答案

双击表单中的按钮并将此代码插入到单击事件处理程序中:`

Double click on your button in the Form and insert this code inside the click event handler : `

        //this code should work
        if (comboBox1.Items.Count == 0)
        {
            MessageBox.Show("Your combo is empty");
        }

   `

这篇关于如何找出组合框内是否有一些项目?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！