.NET字符串转JSON格式

原JSON字符串

{
    "errcode": 0, 
    "errmsg": "ok", 
    "process_instance": {
        "attached_process_instance_ids": [ ], 
        "biz_action": "NONE", 
        "business_id": "20210125000534484", 
        "create_time": "2021-01-25 16:39:53", 
        "form_component_values": [
            {
                "component_type": "TableField", 
                "ext_value": "{\"statValue\":[{\"id\":\"MoneyField-JQYS83D4\",\"label\":\"总报销金额（元）\",\"upper\":\"贰角伍分\",\"num\":\"0.25\"}],\"componentName\":\"TableField\"}", 
                "id": "TableField-MINGXI", 
                "name": "报销明细", 
                "value": "[{\"rowValue\":[{\"componentType\":\"MoneyField\",\"label\":\"报销金额（元）\",\"extendValue\":\"{\\\"upper\\\":\\\"壹角贰分\\\",\\\"componentName\\\":\\\"MoneyField\\\"}\",\"value\":\"0.12\",\"key\":\"MoneyField-JQYS83D4\"},{\"componentType\":\"DepartmentField\",\"label\":\"费用所属小组\",\"extendValue\":[{\"number\":3,\"name\":\"事业部\",\"id\":\"1567735\"}],\"value\":\"事业部\",\"key\":\"DepartmentField_1F0JU5NK816O0\"},{\"componentType\":\"TextNote\",\"label\":\"说明\",\"value\":\"1、费用归属总部选行政中心本部。\\n5、外联部发生的费用，不能明确区分到下级巴的，费用归属选市场中心本部。\\n6、发生的费用涉及各个部门的（如年会费用），归属总部费用选行政中心本部。\",\"key\":\"TextNote_1XJOZAY9Z6N40\"},{\"componentType\":\"DDSelectField\",\"label\":\"报销类别\",\"extendValue\":{\"label\":\"办公费\",\"key\":\"option_K4JNCM0A\"},\"value\":\"办公费\",\"key\":\"DDSelectField-IZTK5BYV\"},{\"componentType\":\"DDSelectField\",\"label\":\"是否需要入库\",\"extendValue\":{\"label\":\"不需要入库（费用）\",\"key\":\"option_1\"},\"value\":\"不需要入库（费用）\",\"key\":\"DDSelectField-KBT1HP2U\"},{\"componentType\":\"TextareaField\",\"label\":\"费用明细\",\"value\":\"测试报销（勿批）测试报销（勿批）测试报销（勿批）测试报销（勿批）测试报销（勿批）测试报销（勿批）测试报销（勿批）\",\"key\":\"费用明细\"}]},{\"rowValue\":[{\"componentType\":\"MoneyField\",\"label\":\"报销金额（元）\",\"extendValue\":\"{\\\"upper\\\":\\\"壹角叁分\\\",\\\"componentName\\\":\\\"MoneyField\\\"}\",\"value\":\"0.13\",\"key\":\"MoneyField-JQYS83D4\"},{\"componentType\":\"DepartmentField\",\"label\":\"费用所属小组\",\"extendValue\":[{\"number\":2,\"name\":\"经营管理部\",\"id\":\"150926607\"}],\"value\":\"经营管理部\",\"key\":\"DepartmentField_1F0JU5NK816O0\"},{\"componentType\":\"TextNote\",\"label\":\"说明\",\"value\":\"1、归属总部费用选行政中心本部。\",\"key\":\"TextNote_1XJOZAY9Z6N40\"},{\"componentType\":\"DDSelectField\",\"label\":\"报销类别\",\"extendValue\":{\"label\":\"餐饮费\",\"key\":\"option_K4JNCM0H\"},\"value\":\"餐饮费\",\"key\":\"DDSelectField-IZTK5BYV\"},{\"componentType\":\"DDSelectField\",\"label\":\"是否需要入库\",\"extendValue\":{\"label\":\"不需要入库（费用）\",\"key\":\"option_1\"},\"value\":\"不需要入库（费用）\",\"key\":\"DDSelectField-KBT1HP2U\"},{\"componentType\":\"TextareaField\",\"label\":\"费用明细\",\"value\":\"测试报销（勿批）测试报销（勿批）测试报销（勿批）测试报销（勿批）测试报销（勿批）测试报销（勿批）测试报销（勿批）\",\"key\":\"费用明细\"}]}]"
            }, 
            {
                "component_type": "DDSelectField", 
                "ext_value": "{\"label\":\"总部\",\"key\":\"option_2\"}", 
                "id": "DDSelectField_WBK6D86XC0", 
                "name": "费用所属院区", 
                "value": "总部"
            }
        ], 
        "operation_records": [
            {
                "date": "2021-01-25 16:39:53", 
                "operation_result": "NONE", 
                "operation_type": "START_PRESS_INSTANCE", 
                "userid": "24104569292501"
            }
        ], 
        "originator_dept_id": "1508735", 
        "originator_dept_name": "总部-经营中心-扩展事业部", 
        "originator_userid": "24104567501", 
        "result": "", 
        "status": "RUNNING", 
        "tasks": [
            {
                "activity_id": "334d_43", 
                "create_time": "2021-01-25 16:39:53", 
                "task_result": "NONE", 
                "task_status": "RUNNING", 
                "taskid": "67206622", 
                "url": "aflow.dingtalk.com?procInsId=578ba9-eb2c-4f9d-903b-0dc002038&taskId=672063722&businessId=20210125534484", 
                "userid": "141547300126278817"
            }
        ], 
        "title": "***提交的集团报销"
    }, 
    "request_id": "8p3gj9629iq7"
}

字符串转JSON

因为form_component_values里的详情返回的不是JSON格式，需要转义

要提取报销金额，承担部门等

string strcdbm = listValueVO[1].Value.ToString(); //承担部门编码(费用所属院区)

                    string strbxsm = listValueVO[0].Value;//报销说明.这个listValueVO[0]就是form_component_values节点
                    JArray jarry = (JArray)JsonConvert.DeserializeObject(strbxsm);
                    //JArray jarry = JArray.Parse(jo["rowValue"].ToString());
                    string thisid = "1";//分录ID
                    string parentId = business_id;//主表Id

                    for (var i02 = 0; i02 < jarry.Count; i02++)
                    {
                        JObject j = JObject.Parse(jarry[i02].ToString());

                        JArray jarry1 = JArray.Parse(j["rowValue"].ToString());
                        JObject jk0 = JObject.Parse(jarry1[0].ToString());//报销金额0.12
                        JObject jk1 = JObject.Parse(jarry1[1].ToString());//承担部门编码150867735
                        JObject jk3 = JObject.Parse(jarry1[3].ToString());//费用项目编码，名称办公费

                        string thisAmount = jk0["value"].ToString();//报销金额
                        string payDepart = jk1["extendValue"].ToString();//承担部门编码
                        payDepart = payDepart.Substring(payDepart.IndexOf("id")+2);
                        payDepart = payDepart.Replace("\"", "").Replace(":", "").Replace("}", "").Replace("]", "").Replace(" ", "");
                        string costItem = jk3["value"].ToString();//费用项目编码
                                                                  //for (var k = 0; k < jarry1.Count; k++)
                                                                  //{
                                                                  //    //JObject jk = JObject.Parse(jarry1[k].ToString());
                                                                  //}
                        string a03 = "";
                    }

                    string a02 = "";