c# - 使用数组填充列表框？

Question

我正在处理的网站将包含一个显示多个原因代码的下拉列表。

是否可以使用派生自自定义类的数组来填充下拉列表？

像这样:

ASPX 页面

<asp:DropDownList ID="ddlReasonsWhy" runat="server"></asp:DropDownList>

ASPX 代码隐藏

protected void Page_Load(object sender, EventArgs e)
{
    //instantiate custom class
    Class1 reasonsList = new Class1();
   //populate reasons list
   this.ddlReasonsWhy.Items.Add(reasonsList.getReasons);

自定义类

public string[] getReasons()
    {
        string[] Reasons;
        Reasons[0] = "test";
        Reasons[1] = "test2";
        Reasons[2] = "test3";

        return Reasons;
    }

UPDATE1:

感谢答案和这个堆栈 link我的最终解决方案类似于 Ahmet 和丝滑的答案。

类

 public List<ListItem> getRejectReasons()
    {
        List<ListItem> reasons = new List<ListItem>();
        reasons.Add(new ListItem("Select Value", "0"));
        reasons.Add(new ListItem("Red", "1"));
        reasons.Add(new ListItem("Green", "2"));
        return reasons;

    }

代码隐藏

 //instantiate custom class
 Class1 reject = new Class1();
 this.ddlReasonsWhy.DataSource = reject.getRejectReasons();
 this.ddlReasonsWhy.DataBind();

Answer 1

使用 ListItem 代替 string 和 Addrange Add

编辑:getReasons 不是变量，所以使用 getReasons()

ASPX页面

<asp:DropDownList ID="ddlReasonsWhy" runat="server"></asp:DropDownList>

ASPX 代码隐藏

protected void Page_Load(object sender, EventArgs e)
{
    //instantiate custom class
    Class1 reasonsList = new Class1();
   //populate reasons list
   this.ddlReasonsWhy.Items.AddRange(reasonsList.getReasons());
}

自定义类

public ListItem[] getReasons()
    {
        ListItem[] Reasons;
        Reasons[0] = "test";
        Reasons[1] = "test2";
        Reasons[2] = "test3";

        return Reasons;
    }