Question

我需要从Web服务返回一些看起来像这样的数据：

data.page = 1
data.count = 12883
data.rows(0).id = 1
data.rows(0).name = "bob"
data.rows(1).id = 2
data.rows(1).name = "steve"
data.rows(2).id = 3
data.rows(2).name = "fred"

我不知道该怎么做。我已经回避了简单类型和简单数组，但从来没有像这样的对象。

数据源是一个sql数据库。目标是javascript / ajax函数。我目前成功地将行本身作为数据集返回并且它可以工作，但我需要添加计数和其他几个父级别＆＃34;变量

为了完全公开，以下是正在运行的代码：

<WebMethod()> _
Public Function rptPendingServerRequests() As DataSet
    Dim connetionString As String
    Dim connection As SqlConnection
    Dim command As SqlCommand
    Dim adapter As New SqlDataAdapter
    Dim ds As New DataSet
    Dim sql As String

    connetionString = "..."
    sql = "SELECT usm_request.request_id, usm_request.status, usm_request.req_by_user_id " +
        "FROM usm_request " +
        "WHERE usm_request.request_id in " +
        "(SELECT distinct(usm_request.request_id) from usm_request, usm_subscription_detail WHERE usm_request.request_id = usm_subscription_detail.request_id " +
        "AND usm_subscription_detail.offering_id = 10307) ORDER BY usm_request.request_id DESC"
    connection = New SqlConnection(connetionString)

    Try
        connection.Open()
        command = New SqlCommand(sql, connection)
        adapter.SelectCommand = command
        adapter.Fill(ds)
        adapter.Dispose()
        command.Dispose()
        connection.Close()

        Return ds

    Catch ex As Exception
    End Try
End Function

我试图用FlexiGrid来消费它。我已经在这里工作了几个小时而没有运气。我基本上需要将以下站点的PHP转换为.net

http://code.google.com/p/flexigrid/wiki/TutorialPropertiesAndDocumentation

Answer 1

我认为只要创建几个类并将数据从数据库移动到这些类中就会好得多。例如：

Public Class MyDataClass
    Public Property Page As Integer

    Public ReadOnly Property Count As Integer
        Get
            If Me.Rows IsNot Nothing Then
                Return Me.Rows.Count
            Else
                Return 0
            End If
        End Get
    End Property

    Public Property Rows As List(Of MyDataRow)

    ' Parameterless constructor to support serialization.
    Public Sub New()
        Me.Rows = New List(Of MyDataRow)
    End Sub
    Public Sub New(wPage As Integer, ds As DataSet)
        Me.New()

        Me.Page = wPage

        For Each oRow As DataRow In ds.Tables(0).Rows
            Dim oMyRow As New MyDataRow

            oMyRow.Id = oRow("id")
            oMyRow.Name = oRow("Name")

            Me.Rows.Add(oMyRow)
        Next
    End Sub
End Class

Public Class MyDataRow
    Public Property Id As Integer
    Public Property Name As String

    ' Parameterless constructor to support serialization
    Public Sub New()

    End Sub
End Class

然后将方法的返回类型更改为MyDataClass并将返回值更改为：

        Return New MyDataClass(1, ds)

vb.net返回多种类型的json对象？

1 个答案: