Using Static methods or none static methods in Dao Class?

Question

Hi I generate Dao classes for some DB operations

in this manner making methods of Dao class as static or none static is better?

Using sample dao class belo

Answer 1

It would result in a big mess. If you are adding 2 items simultaneously from different threads, you would certainly end up with very strange results, or even errors if one thread closes the DataAcessor before the other completes.

I would use a local DataAcessor or create a new and use that in all the methods depending on how you want to manage the lifetime of DataAcessor.

public class SampleDao
{
  public void AddSampleItem(object[] params)
  {
      DataAcessor dataAcessor =new DataAcessor();
      // ...
  }

  public void UpdateSampleItem(object[] params)
  {
      DataAcessor dataAcessor =new DataAcessor();
      // ...
  }
}