DbProviderFactory.cs

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using System.Diagnostics.CodeAnalysis;
 
namespace System.Data.Common;
 
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicFields)]
public abstract class DbProviderFactory
{
    private bool? _canCreateDataAdapter;
 
    private bool? _canCreateCommandBuilder;
 
    public virtual bool CanCreateBatch => false;
 
    public virtual bool CanCreateDataSourceEnumerator => false;
 
    public virtual bool CanCreateDataAdapter
    {
        get
        {
            if (!_canCreateDataAdapter.HasValue)
            {
                using DbDataAdapter dbDataAdapter = CreateDataAdapter();
                _canCreateDataAdapter = dbDataAdapter != null;
            }
            return _canCreateDataAdapter.Value;
        }
    }
 
    public virtual bool CanCreateCommandBuilder
    {
        get
        {
            if (!_canCreateCommandBuilder.HasValue)
            {
                using DbCommandBuilder dbCommandBuilder = CreateCommandBuilder();
                _canCreateCommandBuilder = dbCommandBuilder != null;
            }
            return _canCreateCommandBuilder.Value;
        }
    }
 
    public virtual DbBatch CreateBatch()
    {
        throw new NotSupportedException();
    }
 
    public virtual DbBatchCommand CreateBatchCommand()
    {
        throw new NotSupportedException();
    }
 
    public virtual DbCommand? CreateCommand()
    {
        return null;
    }
 
    public virtual DbCommandBuilder? CreateCommandBuilder()
    {
        return null;
    }
 
    public virtual DbConnection? CreateConnection()
    {
        return null;
    }
 
    public virtual DbConnectionStringBuilder? CreateConnectionStringBuilder()
    {
        return null;
    }
 
    public virtual DbDataAdapter? CreateDataAdapter()
    {
        return null;
    }
 
    public virtual DbParameter? CreateParameter()
    {
        return null;
    }
 
    public virtual DbDataSourceEnumerator? CreateDataSourceEnumerator()
    {
        return null;
    }
}