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：

复制代码 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

IEqualityComparer<Dictionary<string, string>> ec = new EntityComparer(); //自定义的比较类

own.fldImportData = ser.Serialize(listmodel.Union(listown, ec)); //合并数据

listLeUpdate.Add(own);

}

else

{

listLeInsert.Add(model);

}

}

CurrentRepository.UpdateAll(listLeUpdate);

CurrentRepository.InsertAll(listLeInsert);

CurrentRepository.Save();

}

tblLims_Ana_LE_Import_Common 为数据库中存数据的表

Union() 方法中用到的自定义比较类:

复制代码 代码如下:

/// <summary>

/// 自定义比较类

/// </summary>

public class EntityComparer : IEqualityComparer<Dictionary<string, string>>

{

public bool Equals(Dictionary<string, string> x, Dictionary<string, string> y)

{

if (ReferenceEquals(x, y)) return true;

if (ReferenceEquals(x, null) || ReferenceEquals(y, null))

return false;

return x["name"] == y["name"]; //如果名称相同就不追加

}

public int GetHashCode(Dictionary<string, string> obj)

{

if (ReferenceEquals(obj, null)) return 0;

int hashName = obj["name"] == null ? 0 : obj["name"].GetHashCode();

int hashCode = obj["name"] == null ? 0 : obj["name"].GetHashCode();

return hashName ^ hashCode;

}

}