C# (CSharp) DataTableTools.DataTableIsNull示例

        private void GetRolePermissionlist()
        {
            DataSet ds = currentRole.Permissions;

            if (!DataSetTools.DataSetIsNull(ds))
            {
                rolePermissionlist = new List <int>();
                DataTable dt = ds.Tables["Permissions"];
                if (!DataTableTools.DataTableIsNull(dt))
                {
                    foreach (DataRow dr in dt.Rows)
                    {
                        rolePermissionlist.Add(Convert.ToInt32(dr["PermissionID"]));
                    }
                }
            }
        }