使用DataTable JSON填充下拉列表

DataTable dt = new DataTable();
dt.Columns.Add("Id", typeof(int));
dt.Columns.Add("Name", typeof(string));

// 假设从后端获取到的JSON数据为jsonString
JArray jsonArray = JArray.Parse(jsonString);

foreach (JObject jsonObject in jsonArray)
{
    DataRow row = dt.NewRow();
    row["Id"] = jsonObject["Id"];
    row["Name"] = jsonObject["Name"];
    dt.Rows.Add(row);
}

// 假设下拉列表的ID为ddlSelect
ddlSelect.DataSource = dt;
ddlSelect.DataTextField = "Name";
ddlSelect.DataValueField = "Id";
ddlSelect.DataBind();