/// <summary>
/// 是否存在
/// </summary>
/// <typeparam name="T">类型</typeparam>
/// <param name="where">查询表达式</param>
/// <returns></returns>
public static bool Exists <T>(Expression <Func <T, bool> > where) where T : IEntity
{
IsTypeCanBeUsed(typeof(T));
return(EntityOperationExtensions.DBExists <T>(where));
}
/// <summary>
/// 是否存在
/// </summary>
/// <typeparam name="T">类型</typeparam>
/// <param name="id">id</param>
/// <returns></returns>
public static bool Exists <T>(string id) where T : IEntity
{
IsTypeCanBeUsed(typeof(T));
return(EntityOperationExtensions.DBExists <T>(id));
}