本文整理汇总了C#中IMongoCollection.DeleteOneAsync方法的典型用法代码示例。如果您正苦于以下问题：C# IMongoCollection.DeleteOneAsync方法的具体用法？C# IMongoCollection.DeleteOneAsync怎么用？C# IMongoCollection.DeleteOneAsync使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IMongoCollection的用法示例。
在下文中一共展示了IMongoCollection.DeleteOneAsync方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: DeleteAsync
public static async Task<int> DeleteAsync(IMongoCollection<BsonDocument> collection, params object[] keyValues)
{
if (keyValues.Length == 0)
throw new ArgumentException("At least 1 keyValue required.");
if (keyValues.Length == 1)
{
var ret = await collection.DeleteOneAsync(Builders<BsonDocument>.Filter.Eq("_id", keyValues[0]));
return ret != null ? (int)ret.DeletedCount : 0;
}
else
{
var keyPath = ToDotPath(keyValues.Skip(1));
var ret = await collection.UpdateOneAsync(Builders<BsonDocument>.Filter.Eq("_id", keyValues[0]),
Builders<BsonDocument>.Update.Unset(keyPath));
return ret != null ? (int)ret.ModifiedCount : 0;
}
}示例2: ExecuteAsync
public async Task ExecuteAsync(DeleteClimbCommandParameters parameters, IMongoCollection<Climb> collection)
{
var filter = Builders<Climb>.Filter.Eq(c => c.Id == parameters.Id, true);
await collection.DeleteOneAsync(filter);
}示例3: Dr
private static async Task Dr(IMongoCollection<BsonDocument> leaders, BsonDocument filter, IMongoCollection<BsonDocument> users, IMongoCollection<BsonDocument> leadersbak)
{
using (var cursor = await leaders.FindAsync(filter))
{
while (await cursor.MoveNextAsync())
{
var batch = cursor.Current;
foreach (var rt in batch)
{
BsonArray bRetweeters = rt["retweeters_id"].AsBsonArray;
//if (bRetweeters.Count == 0)
// continue;
foreach (var bUser in bRetweeters)
{
var lUser = bUser.ToInt64();
try
{
log.Info("readling retweeter {0}", lUser);
var usersFilter = Builders<BsonDocument>.Filter.Eq("id", lUser);
var result = await users.Find(usersFilter).ToListAsync();
if (result.Count > 0)
continue;
log.Info("downloading retweeter {0}", lUser);
TwitterProfileHandler profileHandler = new TwitterProfileHandlerMongo();
string screenName = profileHandler.Download(lUser);
//TwitterHomelineHandler homeHandler = new TwitterHomelineHandlerMongo();
//homeHandler.Download(screenName);
}
catch (Exception ex)
{
string msg = "Error trying to download profile for user:{0}";
msg = string.Format(msg, lUser);
log.Error(ex, msg);
}
}
//rt["done"] = true;
//var filterupdate = Builders<BsonDocument>.Filter.Eq("_id", rt["_id"]);
//var update = Builders<BsonDocument>.Update.Push("done", true);
//await leaders.UpdateOneAsync(filterupdate, rt);
await leadersbak.InsertOneAsync(rt);
var filterbak = Builders<BsonDocument>.Filter.Eq("_id", rt["_id"]);
await leaders.DeleteOneAsync(filterbak);
}
}
}
Thread.Sleep(5000);
}示例4: findDocuments
static async Task findDocuments(IMongoCollection<student> collection, FilterDefinition<student> searchFilter)
{
//Option 1: for iterting over many documents on the server.
Console.WriteLine("--------------------------------------------------------------------");
using (var cursor = await collection.Find(searchFilter)
.Sort("{student_id:1, score:-1}")
.ToCursorAsync())
{
int i = 1;
using (StreamWriter w = File.AppendText("c:\\data\\test2.txt"))
{
while (await cursor.MoveNextAsync()) //iterate over each batch
{
foreach (var doc in cursor.Current)
{
string text = i + " :=> sid: " + doc.student_id + ":" + doc.score;
Console.WriteLine(text);
w.WriteLine(text);
if (i % 4 == 0)
{
Console.WriteLine("lowest score for " + doc.student_id + " is " + doc.score);
w.WriteLine("lowest score for " + doc.student_id + " is " + doc.score);
await collection.DeleteOneAsync(a => a.Id == doc.Id);
}
i++;
}
}
}
}
}