"There is already an open DataReader associated with this Command which must be closed first." Code Answer's

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

By Vivacious VendaceVivacious Vendace on Feb 26, 2020 
  <connectionStrings>
    <add name="IdentityConnection" connectionString="Data Source=(LocalDb)\v11.0;AttachDbFilename=|DataDirectory|\IdentityDb.mdf;Integrated Security=True;MultipleActiveResultSets=true;" providerName="System.Data.SqlClient" />
  </connectionStrings>

Source: stackoverflow.com

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

By Drab DogfishDrab Dogfish on May 19, 2021 
Add this to your connection string:
MultipleActiveResultSets=true;

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

By Wrong WhaleWrong Whale on Dec 09, 2020 
there is already an open datareader associated with this command which must be closed.

Source: www.codeproject.com

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