DropDownList简单问题,都进来看看! DropDownList 怎么在后台用代码生产下拉列表项和怎么用代码给他赋值呢? 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 DropDownList1.Item.Insert(0,new ListItem("请选择",0)); LiseItem item =new ListItem(text,value);this.dropdownlist1.item.add(item); <html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>Tim 演示</title></head><body> <form id="form1" runat="server"> <div> <asp:DropDownList ID="DropDownList1" runat="server"> </asp:DropDownList> </div> </form></body></html> protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { for (int i = 0; i < 10; i++) { DropDownList1.Items.Add(new ListItem(i.ToString(),(i*10).ToString())); } } } DropDownList1.SelectedValue="0";DropDownList1.Text="请选择"; DropDownList1.Item.Insert(0,new ListItem("显示值",索引)); 在前台页面放一个label 如:<asp:Label ID="lblSelect" runat="server" Text=""></asp:Label>然后在后台给lblSelect.Text属性赋值,输出一个DropDownList 可以了,DropDownList 里的内容根据你实际情况赋值,如张三,李四,王五,赵六lblSelect.Text="<select id=\"myDropDownList\" style=\"width:145px;\"> <option selected=\"selected\" value=\"0\">张三</option> <option value=\"1\">李四</option> <option value=\"2\">王五</option> <option value=\"3\">赵六</option> </select>"; dropdownlist.items.insert(0,new listitem("-请选择-","")) dropdownlist.SeletedValue="" for (int i = 0; i < 5;i++) { ListItem list = new ListItem(); list.Text = "AAA"+i; this.DropDownList1.Items.Add(list); } this.DropDownList1.DataSource = dt; this.DropDownList1.DataTextField = "title"; this.DropDownList1.DataValueField = "id"; this.DropDownList1.DataBind(); 请问怎么把vs2010起始页的新建项目改为新建网站? 列表显示的问题 请问哪里有DropDownList组件二级联动的源码下载? 为什么定时器没有工作 初学asp.net的小疑问 关于在静态文件中包含.aspx的问题 各位大虾们~~~那位知道ddos的解决办法,现在我们公司的服务器中招了,兄弟我现在是吃糠咽菜呀~~~ 页面提交时,在text框中输入">"时,提交后显示时仍然是">",而不是">",怎样做? 在DataGrid中锁定表的前两列(类似Excel的锁定窗口功能) 高手们多指教,谢谢了 求教-IIS站点匿名访问问题 如何让顶层DIV始终显示,不随滚动条而滚动
this.dropdownlist1.item.add(item);
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Tim 演示</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="DropDownList1" runat="server">
</asp:DropDownList> </div>
</form>
</body>
</html> protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
for (int i = 0; i < 10; i++)
{
DropDownList1.Items.Add(new ListItem(i.ToString(),(i*10).ToString()));
}
}
}
DropDownList1.Text="请选择";
lblSelect.Text="<select id=\"myDropDownList\" style=\"width:145px;\">
<option selected=\"selected\" value=\"0\">张三</option>
<option value=\"1\">李四</option>
<option value=\"2\">王五</option>
<option value=\"3\">赵六</option>
</select>";
dropdownlist.SeletedValue=""
{
ListItem list = new ListItem();
list.Text = "AAA"+i;
this.DropDownList1.Items.Add(list);
} this.DropDownList1.DataSource = dt;
this.DropDownList1.DataTextField = "title";
this.DropDownList1.DataValueField = "id";
this.DropDownList1.DataBind();