Question

我有2个commboBoxes，代码如下：

  Dictionary<string, List<string>> dict = new Dictionary<string, List<string>>()
        {
            { "A", new List<string> { "A1", "A2", "A3", "A4", "A5" }},
            { "B", new List<string> { "B1", "B2", "B3", "B4", "B5" }},
            { "C", new List<string> { "C1", "C2", "C3", "C4", "C5" }},
        };

        comboBox1.DataSource = dict.ToList();
        comboBox1.DisplayMember = "Key";

是否可以显示值（＆＃34; A1＆＃34;，＆＃34; A2＆＃34;，＆＃34; A3＆＃34;，＆＃34; A4＆＃34;，＆＃34 ;当我选择＆＃34; A＆＃34;时，A5＆＃34;）到comboBox2来自comboBox1？

Answer 1

没有太多工作要做。它已经得到了很多回答。但是我们不需要这么多。这是代码：

Dictionary<string, List<string>> dict;       
    private void Form1_Load(object sender, EventArgs e)
    {
        dict = new Dictionary<string, List<string>>()
        {
            { "A", new List<string> { "A1", "A2", "A3", "A4", "A5" }},
            { "B", new List<string> { "B1", "B2", "B3", "B4", "B5" }},
            { "C", new List<string> { "C1", "C2", "C3", "C4", "C5" }},
        };
        cb1.DisplayMember = "Key";
        cb1.DataSource = dict.ToList();

    }

    private void cb1_SelectedIndexChanged(object sender, EventArgs e)
    {                      
            cb2.DataSource = dict[cb1.Text];              
    }

修改是正确的：首先设置DisplayMember，然后设置数据源。

2个包含来自Dictionary <string>的DatasSource的组合框，List <string>＆gt; </string> </string>

1 个答案: