3.EF Code First
3.1新增
public bool Build() { try { var context = new FeeDbContext(); if (!context.Database.Exists()) { new List<IDataInitializer<GDG_DbContext>>() { new DataInit() }.Setup<GDG_DbContext>(context); return true; } return false; } catch (DbEntityValidationException ex) { StringBuilder error = new StringBuilder(); foreach (var item in ex.EntityValidationErrors) { foreach (var item2 in item.ValidationErrors) { error.Append(string.Format("{0}:{1}\r\n", item2.PropertyName, item2.ErrorMessage)); } } Console.WriteLine("数据库初始化报错：" + error); throw ex; } catch (Exception e) { Console.WriteLine("数据库初始化报错：" + e.Message); throw e; } } |
3.2移除
public bool Remove() { var context = new GDG_DbContext(); try { if (context.Database.Exists()) { return context.Database.Delete(); } return true; } catch (Exception e) { Console.WriteLine("数据库初始化报错：" + e.Message); return false; } finally { context.Dispose(); } } |
3.3初始化
public bool Rebuild()
{
return Remove() && Build();
}
