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MongoDB.Driver c# 操作

读取

List<string> getfolderGuidList()
{
var folderGuidList = new List<string>();
try
{
// 读取连接字符串
var strCon = $"mongodb://{userName}:{PassWord}@{ip}:{port}/{dbName}";
var mongoUrl = new MongoUrlBuilder(strCon);
// 创建并实例化客户端
var _client = new MongoClient(mongoUrl.ToMongoUrl());
// 根据数据库名称实例化数据库
var database = _client.GetDatabase(dbName);
var tbName = "folder";
var collection = database.GetCollection<BsonDocument>(tbName);
var filterBuilder = Builders<BsonDocument>.Filter;
var filter = filterBuilder.Eq("folderType", 1);
var list = collection.Find(filter).ToList();
foreach (BsonDocument doc in list)
{
folderGuidList.Add(doc["folderGuid"].ToString());
}
}
catch (Exception e)
{
Log(e, "err");
}

return folderGuidList;
}

读取列表

查找

等于

var filterBuilder = Builders<BsonDocument>.Filter;
var filter = filterBuilder.Eq("folderType", 1);

存在某字段

filterBuilder.Exists("program",true)

.Exists("programs.0", true); 数组的第一个元素存在

包含

var GuidList = new List<string>();
var filter = Builders<BsonDocument>.Filter.In("Guid", GuidList);

 

修改
var result = collection.UpdateMany(filter,mUpdateDocument);
delNum = result.ModifiedCount;

删除

var result = collection.DeleteMany(filter);
var delNum= result.DeletedCount;



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