[英]De-Serialize multiple BSon ObjectID to String of a MongoDB document in C# .Net
我需要反序列_id從價值和Boss_id ObjectId
到string
使用C#.NET在MongoDB的集合中的所有文件
我的收款Employee
是(這里我僅粘貼了2個文檔,實際上我有超過1萬個文檔)
{
"_id" : ObjectId("575845a713d284da0ac2ee81"),
"Boss_id" : ObjectId("575841b313d284da0ac2ee7d"),
"Emp_Name" : "Raj",
}
{
"_id" : ObjectId("575845d213d284da0ac2ee82"),
"Boss_id" : ObjectId("575841b313d284da0ac2ee7d"),
"Emp_Name" : "Kumar"
}
我的C#來源-模型類EmployeeModel
public class EmployeeModel
{
[BsonId]
[BsonRepresentation(BsonType.ObjectId)]
public string Id { get; set; }
[BsonId]
[BsonRepresentation(BsonType.ObjectId)]
public string Boss_Id { get; set; }
public string Emp_Name { get; set; }
}
我的C#MongoDB代碼:
private static IMongoClient _client;
private static IMongoDatabase _database;
_client = new MongoClient();
_database = _client.GetDatabase("RMS");
var collection = _database.GetCollection<EmployeeModel>("Employee");
BsonDocument temp = new BsonDocument("Emp_Name", "Raj");
var cItem = collection.Find(temp).ToList();
if ((cItem != null) && (cItem.Count > 0))
{
_EmpList = cItem;
}
它的拋出異常
類型為MongoDB.Bson.Serialization.Attributes.BsonIdAttribute的屬性只能應用於單個成員。
請幫助我如何獲取文件?
試試下面的代碼。 [BsonId]是文檔的ID,因此在Json中,它是“ _id”元素。 僅此而已
public class EmployeeModel
{
[BsonId]
[BsonRepresentation(BsonType.ObjectId)]
public string Id { get; set; }
[BsonRepresentation(BsonType.ObjectId)]
public string Boss_Id { get; set; }
public string Emp_Name { get; set; }
}
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