Datareader already open

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August undefined, 2024

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 … WebHi Everyone Welcome to our YouTube Channel We provide all types of computer tutorial , from basic level to high level.If you are a school student, college st...

how to solve the there is already an open data reader vb.net /C#

WebMar 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? ... rrmm richmond

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WebOct 28, 2024 · The code works in v.2.2 but throws an exception, "InvalidOperationException: There is already an open DataReader associated with this Command which must be closed first." in v.3.0. They both are building two list of users, one of users in the target role and the other of user NOT in the target role. The idea is to add or remove users from the ... WebApr 12, 2024 · 获取验证码. 密码. 登录 WebYour problem is that you are not disposing of the objects you are using. For that purpose is better to always use using structure, since it will guarantee you that everything is gonna is disposed of. Try the code below: sqlCmd.CommandText = "SELECT * FROM GlassTable"; using (dataReader = sqlCmd.ExecuteReader()) { //Code to read rows with … rrmm treatment

There is already an open DataReader associated with this …

DataReader already open error when trying to run two queries

WebFeb 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 … 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 ... rrmotors.itWebNov 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 … rrmr elementary phone number

"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 ... " - Datareader already open

Datareader already open

There is Already an open DataReader that must be closed first

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. 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 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(); WebMar 11, 2015 · The problem was that, when a query fails, the transaction can't be rolled back because the data reader is already open to process the query. A second exception is thrown and the first one is lost. I just placed the rollback inside a try catch block and used the AggregateException class to throw both exceptions.

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 … 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 & …

WebApr 22, 2010 · Every now and then, we get the following error: There is already an open DataReader associated with this Command which must be closed firs. This is happening intermittently and I'm curious as to what is going on. My guess is that when there's some lag between one method executing and the next one firing, it's locking up the DataContext …

WebSep 22, 2024 · using (SqlConnection connection = new SqlConnection ( "connection string" )) { connection.Open (); using (SqlCommand cmd = new SqlCommand ( "SELECT * FROM SomeTable", connection)) { using (SqlDataReader reader = cmd.ExecuteReader ()) { if … rrmoto butyWebApr 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 ... rrmr twitterWebMar 13, 2024 · 1. If someone is wondering where to provide "Additional Connection Parameters" value then disconnect your sql instance in ssms and connect again, in connect to server dialog, click on options buttion and in last tab "Additional Connection Parameters" can be found. Here you can provide MultipleActiveResultSets=True; and click connect … rrmr footballWebOct 7, 2024 · There is already an open DataReader associated with this Command which must be closed first. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the … rrmotionWebVirginia Lifters, The first two meets of the 2024 calendar year have been approved. The 2024 USA Powerlifting Virginia New Year’s Open (VA-2024-01) will occur on January 9th at the Shop Gym in... rrmoving thr freezerWebAbout The Fauquier Bank. The Fauquier Bank was established on Feb. 14, 1902. Headquartered in Warrenton, VA, it has assets in the amount of $596,039,000. rrmr warriorsWebJun 21, 2024 · I have a very odd issue going on. I am getting the error There is already an open DataReader associated with this Command which must be closed first. from an API call. This error however only happens on this one server, not the main server that also … rrmr elementary school