Queryable.Union 方法实现json格式的字符串合并的具体实例

1.在数据库中以json字符串格式保存，如：[{"name":"张三","time":"8.592","area":"27.27033","conc":"4.12136"},{"name":"李四","time":"9.100","area":"56.21229","conc":"4.57692"}]

2.添加新内容后合并不相同的数据。如果name相同，以最新的数据替换原来的数据。

如：数据库中原保存的数据是[{"name":"张三","time":"8.592","area":"27.27033","conc":"4.12136"},{"name":"李四","time":"9.100","area":"56.21229","conc":"4.57692"}]

新加的数据为[{"name":"张三","time":"12","area":"27.70533","conc":"4.12136"},{"name":"王五","time":"4","area":"77","conc":"8.788"}]

 则替换后的数据为[{"name":"张三","time":"12","area":"27.70533","conc":"4.12136"},{"name":"王五","time":"4","area":"77","conc":"8.788"},{"name":"李四","time":"9.100","area":"56.21229","conc":"4.57692"}]

代码如下：

代码如下:
public void InsertOrUpdateOnlyItem(List<tblLims_Ana_LE_Import_Common> listLe)
        {
            var listLeInsert = new List<tblLims_Ana_LE_Import_Common>();
            var listLeUpdate = new List<tblLims_Ana_LE_Import_Common>();
            foreach (var le in listLe)
            {
                tblLims_Ana_LE_Import_Common model = le;
                var own = CurrentRepository.Find(a => a.fldTaskID == model.fldTaskID
                && a.fldBizCatID == model.fldBizCatID
                && a.fldItemCode == model.fldItemCode
                && a.fldNumber == model.fldNumber
                && a.fldSampleCode == model.fldSampleCode);
                if (own != null)
                {
                    var ser = new JavaScriptSerializer();

                    var listown = ser.Deserialize<List<Dictionary<string, string>>>(own.fldImportData);  //原数据
                    var listmodel = ser.Deserialize<List<Dictionary<string, string>>>(model.fldImportData); //新数据