Answers for "there is already an open datareader associated with this connection which must be closed first c#"

There is already an open DataReader associated with this Command which must be closed first.

Add this to your connection string:
MultipleActiveResultSets=true;

Posted by: Guest on May-19-2021

There is already an open DataReader associated with this Command which must be closed first c#

<connectionStrings>
    <add name="IdentityConnection" connectionString="Data Source=(LocalDb)\v11.0;AttachDbFilename=|DataDirectory|\IdentityDb.mdf;Integrated Security=True;MultipleActiveResultSets=true;" providerName="System.Data.SqlClient" />
  </connectionStrings>

Posted by: Guest on February-26-2020

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