c# - C# 声明同一个表的多个实例

Question

我有一个表格，需要 27 个单元格中的 27 个下拉菜单来接受用户输入。目前，我正在像这样声明所有 27 个：

DropDownList DropList1 = new DropDownList();
DropList1.ID = "TrendList1";
DropList1.AutoPostBack = true;
DropList1.SelectedIndexChanged += new EventHandler(this.Selection_Change);
DropList1.DataSource = CreateDataSource();
DropList1.DataTextField = "ColorTextField";
DropList1.DataValueField = "ColorValueField";
DropList1.DataBind();

DropDownList DropList2 = new DropDownList();
DropList2.ID = "TrendList2";
DropList2.AutoPostBack = true;
DropList2.SelectedIndexChanged += new EventHandler(this.Selection_Change);
DropList2.DataSource = CreateDataSource();
DropList2.DataTextField = "ColorTextField";
DropList2.DataValueField = "ColorValueField";
DropList2.DataBind();

etc...

但是我知道必须有比我编写的蛮力代码更好的方法。不幸的是，我是网络编程的新手，我还没有找到更好的方法来做到这一点。

任何建议表示赞赏。

问候。

Answer 1

var data = CreateDataSource();

for(x = 1; x < 28; x++)
{
    DropDownList dl = new DropDownList();
    dl.ID = "TrendList" + x.ToString();
    dl.AutoPostBack = true;
    dl.SelectedIndexChanged += new EventHandler(this.Selection_Change);
    dl.DataSource = data;
    dl.DataTextField = "ColorTextField";
    dl.DataValueField = "ColorValueField";
    dl.DataBind();
    // add it to the cell here too
}