Datareader already open
WebJul 6, 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. ... To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters. ... dataReader = LoadData() num_feature = … WebMar 15, 2024 · Solution 1 The clue is in the error message: there is already an open datareader associated with this command which must be closed. You create a reader, and do not try to dispose of it before you reuse the same connection for the insert command. …
Datareader already open
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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 …
WebJul 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. WebJun 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 …
WebMar 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 … 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 …
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 …
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 … how did my amazon account get hackedWeb[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。 ... how many sisters does michael jackson haveWebStack Overflow Public questions & answers; Stack Overflow for Teams Places developers & technologists percentage individual knowledge including coworkers; Skills Build will employer brand ; Advertising Reach developers & … how many sisters does lois lane haveWebconnection.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 ... how did mussolini\u0027s gain powerWebOct 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 ... how did muzan become a womanWebJan 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. how did my congressman vote todayWebMar 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 … how did mussolini\u0027s fascist regime rule italy