jquery用ajax方式从后台获取json数据后如何将内容填充到下拉列表

{
context.Response.ContentType = "text/plain";
string JsonStr = JsonConvert.SerializeObject(CreateDT());
context.Response.Write(JsonStr);
context.Response.End();
}
#region 创建测试数据源
//创建DataTable
protected DataTable CreateDT()
{
DataTable tblDatas = new DataTable("Datas");
//序号列
//tblDatas.Columns.Add("ID", Type.GetType("System.Int32"));
//tblDatas.Columns[0].AutoIncrement = true;
//tblDatas.Columns[0].AutoIncrementSeed = 1;
//tblDatas.Columns[0].AutoIncrementStep = 1;
//数据列
tblDatas.Columns.Add("IdNumber", Type.GetType("System.String"));
tblDatas.Columns.Add("Name", Type.GetType("System.String"));
tblDatas.Columns.Add("BirthDate", Type.GetType("System.String"));
tblDatas.Columns.Add("Sex", Type.GetType("System.String"));
tblDatas.Columns.Add("Wage", Type.GetType("System.Decimal"));
tblDatas.Columns.Add("Bonus", Type.GetType("System.Decimal"));
//统计列开始
tblDatas.Columns.Add("NeedPay", Type.GetType("System.String"), "Wage+Bonus");
//统计列结束
tblDatas.Columns.Add("Address", Type.GetType("System.String"));
tblDatas.Columns.Add("PostCode", Type.GetType("System.String"));
//设置身份证号码为主键
tblDatas.PrimaryKey = new DataColumn[] { tblDatas.Columns["IdNumber"] };
tblDatas.Rows.Add(new object[] { "43100000000000", "张三", "1982", "0", 3000, 1000, null, "深圳市", "518000" });
tblDatas.Rows.Add(new object[] { "43100000000001", "李四", "1983", "1", 3500, 1200, null, "深圳市", "518000" });
tblDatas.Rows.Add(new object[] { "43100000000002", "王五", "1984", "1", 4000, 1300, null, "深圳市", "518000" });
tblDatas.Rows.Add(new object[] { "43100000000003", "赵六", "1985", "0", 5000, 1400, null, "深圳市", "518000" });
tblDatas.Rows.Add(new object[] { "43100000000004", "牛七", "1986", "1", 6000, 1500, null, "深圳市", "518000" });
return tblDatas;
}
#endregion
public bool IsReusable
{
get
{
return false;
}
}
}

<!--
<script type="text/javascript">
$(function () {
$.ajax({
url: 'jsondata.ashx',
type: 'GET',
dataType: 'json',
timeout: 1000,
cache: false,
beforeSend: LoadFunction, //加载执行方法
error: erryFunction, //错误执行方法
success: succFunction //成功执行方法
})
function LoadFunction() {
$("#list").html('加载中...');
}
function erryFunction() {
alert("error");
}
function succFunction(tt) {
$("#list").html('');
//eval将字符串转成对象数组
//var json = { "id": "10086", "uname": "zhangsan", "email": "zhangsan@qq.com" };
//json = eval(json);
//alert("===json:id=" + json.id + ",uname=" + json.uname + ",email=" + json.email);