Question

我正在尝试通过我的WCF服务进行服务器端分页。我的代码只获得50条记录并显示它们，但总共有57条记录，我无法翻页到第2页查看它们。这是我的服务代码：

<OperationContract()>
    Public Function QueryUsersForGroup(
        ByVal authentication As AuthenticationArgs,
        ByVal group As Guid,
        ByVal skip As Integer,
        ByVal take As Integer) As ResponseArgs(Of User())

        Dim exception As ExceptionArgs = Nothing

        If AuthenticationService.CheckPermissions(
            authentication,
            exception,
            PermissionType.AdministerUserAccounts) Then

            Dim model As CscModel = DataHelper.CreateModel()
            Dim currentGroup = model.Groups.FirstOrDefault(Function(row) row.Id.Equals(group))
            If currentGroup Is Nothing Then Return New ResponseArgs(Of User())(New User() {})

            ' This only returns 50 records since take is 50 from my callback
            Return New ResponseArgs(Of User())(currentGroup.Users.Ship(skip).Take(take).ToArray())

        Else

            Return New ResponseArgs(Of User())(exception)

        End If

    End Function

我怎样才能传递记录的总数，也只能传递一次显示的50条记录？

Answer 1

我想出了如何传递记录的总数。我刚刚在我的

中添加了第二个参数

ResponseArgs(of User())(curretGroup.Users.Skip(skip).Take(take).ToArray(), totalCount)

它有效！当然，我必须修改我的ResponseArgs类以允许2个参数。

如何从Silverlight 5中的WCF服务获取服务器端分页的记录总数？

1 个答案: