Datareader already open

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WebStack Overflow Public questions & answers; Stack Overflow for Teams Places developers & technologists percentage individual knowledge including coworkers; Skills Build will employer brand ; Advertising Reach developers & … WebThere is already an open DataReader associated with this Command which must be closed first. 6. MultiThreading error: There is already an open DataReader associated with this Connection which must be closed first. 72.

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Web5. You make another request in your select for each of your products. But your products are enumerated so the first datareader is not closed. It is why you have multiple datareaders opened. public ActionResult Index () { var products = _db.Products.ToArray () // force loading the results from database // and close the datareader var viewModel ... WebFeb 2, 2015 · There is already an open DataReader associated with this Command which must be closed first.- Help:(0. there is already an open datareader associated with this command which must be closed first. vb.net 2010. 0. diary of cricket

There is already an open DataReader associated with this …

WebMar 15, 2024 · If your Command contains output parameters or return values, they will not be available until the DataReader is closed. Note that while a DataReader is open, the Connection is in use exclusively by that DataReader. You cannot execute any commands for the Connection, including creating another DataReader, until the original DataReader … WebAug 2, 2014 · There is already an open DataReader associated with this Connection which must be closed first. I am using Visual Studio 2010/.Net 4.0 and MySQL for this project. Basically I am trying to run another SQL statement while using data reader to do my other task. I am getting exception at line cmdInserttblProductFrance.ExecuteNonQuery(); Web我有一個正在使用的簡單數據庫。它為用戶包含兩個條目，一個是UserID為和IsAdmin的用戶，另一個是UserID 和IsAdmin為的用戶。數據庫中的唯一字段是字符串UserID和位IsAdmin。我正在從數據庫中讀取以下代碼：如果我輸入數字作為UserID，則一切正常，但 … diary of daily prayer

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Webpositions are currently open, and we need members to step forward! If you are interested in being involved, please check the list below for open positions and contact us at [email protected] 2024-19 PACT Board Members Co-Presidents - Bernadine … WebSep 15, 2024 · The DataReader is a good choice when you're retrieving large amounts of data because the data is not cached in memory. The following example illustrates using a DataReader, where reader represents a valid DataReader and command represents a … diary of datingWeb[英] Error: There is already an open DataReader associated with this Command which must be closed first. 2024-12-31. 其他开发 c# asp.net sql. 本文是小编为大家收集整理的关于错误。已经有一个打开的DataReader与此命令相关联，必须先关闭。 ... diary of dave the villager 41

"WebMar 18, 2024 · There is already an open DataReader associated with this Command which must be closed first 597 No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClient' " - Datareader already open

Datareader already open

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WebMar 17, 2024 · A tag already exists with the provided branch name. ... open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters. Show hidden characters // // Created by Taiga on 2024/3/17. // # include " util/data_reader.h " using namespace calabash; using namespace std; … WebOct 8, 2015 · I have a DbDataAdapter on which I call Fill () and it gives me an error that says: "There is already an open DataReader associated with this command which must be closed first." Here is how I setup the command: private int ExecuteQuery (string …

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WebAug 14, 2012 · i was searching for the use of Task Parallel library with DataReader and found piece of code. it looks nice but objective is not very clear to me. so here is the code i got. public IEnumerable ReadData () { using (SqlConnection conn = new SqlConnection ("myConnString")) using (SqlCommand comm = new SqlCommand … WebMar 17, 2024 · There is already an open DataReader associated with this Command which must be closed first. The problem is stemming from the line: foreach (var user in _userManager.Users) { I understand that basically, there is another reader open and the other hasn't been closed but I don't know how to fix this based on my code.

WebFeb 20, 2015 · r. OMB M-10-06, Open Government Directive, December 8, 2009. s. OMB M-12-18, Managing Government Records Directive, August 24, 2012. t. President Executive Order, Making Open and Machine Readable the New Default for Government … I got a problem with an error that say that my datareader is already open. My code looks like this. public static Users GetByID (int ID, SqlConnection connection) { SqlCommand command = new SqlCommand ("Select Name, Email, LastLogin, FK_Role_ID from Users where ID=@id"); command.Connection = connection; command.Parameters.Add (new SqlParameter ...

WebFeb 8, 2024 · You open your reader up at the top: reader = cmd.ExecuteReader So, it's open. And then, when you run the Fill command, it conflicts with the open reader!. The simplest fix - although, personally, I would restructure the code a bit, to bring the OpenReader nearer to where it is used - would be to add a Close to your reader right … Webconnection.Close(); // <-----+ } // connection.Close() // likewise, it'll already be closed here It's easy to see now why the connection is already open during the first run of the while loop. Apropos: I would suggest that you not.Open() and .Close() the connection for every single command. (Connections should indeed not be kept open any ...

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WebApr 9, 2024 · However, when I try to use yfinance and pandas_datareader, the app returns nothing. I have already incorporated the override code and yfinance, pdr are both of the latest versions. Moreover, when I run the flask app on localhost it works just fine accessing yahoo finance API...I don't understand why it stops working once the app is running on ... cities skylines slow simulation speedWebJan 14, 2014 · System.InvalidOperationException: There is already an open DataReader associated with this Command which must be closed first. c#; sql-server; sqldatareader; Share. Improve this question. Follow edited Jan 14, 2014 at 8:40. marc_s. 725k 174 174 gold badges 1326 1326 silver badges 1449 1449 bronze badges. cities skylines small interchangeWebNov 10, 2010 · By default it´s not possible to have two SqlDataReader's open at the same time sharing the same SqlConnection object. You should close the first one (queryInvestorLookup) before calling the second (queryPasswordCheck). This would be good from a design and performance point of view since a recommendation for .NET is … diary of death season 3WebFeb 13, 2024 · I am running an issue with "DataReader already open, and it does not make sense at all as I am using multiple contexts. Here is dummy representations of respective classes. public class MyDbContext : DbContext { private readonly PjSqlConnectionStringBuilder pjSqlConnectionStringBuilder; public … cities skylines small townWebJul 21, 2024 · A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. diary of daresWebMar 27, 2015 · There is already an open DataReader associated with this Command which must be closed first. 1840. Is there a reason for C#'s reuse of the variable in a foreach? Hot Network Questions Why don't SpaceX boosters belly flop? Gödel encoding - Part I Why are accessible states taken as eigenstates in statistical physics? ... cities skylines smart traffic modWebJan 31, 2024 · There is already an open DataReader associated with this Command which must be closed first. using (SqlDataReader....) and adding MultipleActiveResultSets=True to the connection string should help. I'm using SQL Server 2014, I heard that there is a problem with SQL Server 2005, so that shouldnt be a problem.. cities skylines snowfall 7