如何在后端使用ASP.NET + JSON使jqGrid工作？

<div id="jqGridPager"></div>

$(document).ready(function () {
    $("#jqGrid").jqGrid({
        url: 'api/getData',
        mtype: "POST",
        datatype: "json",
        colNames: ["ID", "Name", "Age"],
        colModel: [
            { name: "id", index: "id", width: 55 },
            { name: "name", index: "name", width: 90 },
            { name: "age", index: "age", width: 80 }
        ],
        rowNum: 10,
        rowList: [10, 20, 30],
        pager: "#jqGridPager",
        sortname: "id",
        viewrecords: true,
        sortorder: "desc",
        caption: "jqGrid Example"
    });
});

[HttpPost]
public JsonResult GetData()
{
    // 从数据库中获取数据
    var data = dbContext.Table.ToList();

    // 将数据转换为JSON格式
    var jsonData = JsonConvert.SerializeObject(data, Formatting.Indented);

    // 返回JSON数据
    return Json(jsonData);
}