WebAPI-DealerSelection/Source/DealerSelection.Common/Data/RepositoryBaseDIAsync.cs

using DealerSelection.Common.Exceptions;
using DealerSelection.Common.Interfaces.Data;
using System.Data.SqlClient;

namespace DealerSelection.Common.Data;

public abstract class RepositoryBaseDIAsync : RepositoryDIBase, IRepositoryDIAsync
{
    public RepositoryBaseDIAsync(string cxnName) : base(cxnName)
    {
        
    }

    public async Task<SqlConnection> OpenCxnAsync()
    {
        SqlConnection cxn = new SqlConnection(CxnString);
        try
        {
            await cxn.OpenAsync();
        }
        catch (SqlException ex) 
        {
            foreach(SqlError error in ex.Errors)
            {
                if(error.Number == 53)
                {
                    throw new DbConnectionException($"DB Connection error for CxnString: {CxnString}. Exception: {ex}");
                }
            }
            throw;
        }

        return cxn;
    }
}