Error “There is already an open DataReader associated with this Command which must be closed first” when using 2 distinct commands

Question

I have this legacy code :

 private void conecta()
 {  
     if (conexao.State == ConnectionState.Closed)
         conexao.Open();
 }

 public List

        

Answer 1

Add MultipleActiveResultSets=true to the provider part of your connection string. See the example below: