C#二維數組聲明簡單例子

protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                string[,] booklist ={
                                        {"001","C# 3.0"},
                                        {"002","ASP.NET3.5"},
                                        {"003","三國演義"},
                                        {"004","水浒"},
                                        {"005","西游記"}
                                    };
                for (int i = 0; i < booklist.GetLength(0); i++)
                {
                    // DrowdownList只能顯示二維數組中的一個維度,這裡顯示的是書名
                    ddlBooks.Items.Add(new ListItem(booklist[i, 1], booklist[i, 0]));
                }

            }
        }

 
 
        protected void ddlBooks_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (ddlBooks.SelectedIndex != -1)
            {
                lblBooks.Text = string.Format
                    ("書名：{0},號碼：{1}", this.ddlBooks.SelectedItem.Text,

                     this.ddlBooks.SelectedValue);
            }
        }