Question

我创建的网络表单比我在下面列出的内容更复杂。

最重要的是，我正在更新GridView，并且我希望根据第一个GridView上的GridView更改自己进行第二次Gridview更新！

请帮忙！我已尝试在GridView2.DataBind()方法中包含updateNumber()行，但我收到实例引用错误或类似内容。我已经被困在这几天了！

我更新了GridView1中的号码，它使用新号码刷新和更新，但不是GridView2，它应该在GridView1上显示更新的号码（是的，我需要GridView2致电GetUpdateNumber() GridView2仍然会显示旧号码......更新前的号码GridView1

以下是

背后的代码

    Option Strict On

Imports Team.MyWebProject

Public Class Blah
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim myNumberClass As New myClass1
        Dim mylist As New List(Of myClass1)

        Try
            If (Not IsPostBack) Then
                If Session("Number") Is Nothing Then
                    myNumberClass.number = 2
                    mylist.Add(myNumberClass)
                    Session("Number") = mylist
                Else
                    myNumberClass = Nothing
                    mylist = CType(Session("Number"), List(Of myClass1))
                End If
            Else
                mylist = CType(Session("Number"), List(Of myClass1))
            End If
        Catch ex As Exception
            MsgBox(ex.Message & "/Blah.aspx.vb Page_Load")
        End Try
    End Sub

    Public Function getNumber() As List(Of myClass1)
        Try
            Dim mylist As List(Of myClass1) = CType(Session("Number"), List(Of myClass1))

            Return mylist
        Catch ex As Exception
            MsgBox(ex.Message & "/Blah.aspx.vb GetNumber")
        End Try
    End Function

    Public Function getUpdatedNumber() As List(Of myClass1)
        Try
            Dim mylist As List(Of myClass1) = CType(Session("Number"), List(Of myClass1))

            Return mylist
        Catch ex As Exception
            MsgBox(ex.Message & "/Blah.aspx.vb GetUpdateNumber")
        End Try
    End Function

    Public Sub updateNumber(ByVal number As Integer)
        Try
            Dim mylist As List(Of myClass1) = CType(Session(Number"), List(Of myClass1))
            Dim LoopIndex As New Integer
            LoopIndex = 0

            For Each Match In mylist
                mylist(LoopIndex).Number = number
                LoopIndex += 1
            Next

            Session("Number") = mylist

        Catch ex As Exception
            MsgBox(ex.Message & "blah.aspx.vb updateNumber")
        End Try

    End Sub

    Protected Sub GridView1_RowCommand(sender As Object, e As GridViewCommandEventArgs) Handles GridView1.RowCommand

    End Sub

    Protected Sub GridView1_RowEditing(sender As Object, e As GridViewEditEventArgs) Handles GridView1.RowEditing

    End Sub

    Protected Sub GridView1_RowUpdating(sender As Object, e As GridViewUpdateEventArgs) Handles GridView1.RowUpdating
        Try

        Catch ex As Exception
            MsgBox(ex.Message & "Blah.aspx.vb GridView13_RowUpdating()")
        End Try
    End Sub

    Protected Sub GridView2_DataBinding(sender As Object, e As EventArgs) Handles GridView2.DataBinding
        Try
            Dim mylist As List(Of myClass1) = CType(Session("Number"), List(Of myClass1))

            getUpdatedNumber()
        Catch ex As Exception
            MsgBox(ex.Message & "Blah.aspx GridView2_Databinding()")

        End Try
    End Sub
End Class

Here is the myClass1.vb class:

    Namespace MyWebProject

    Public Class myClass1
        Private _number As Integer

        Public Sub New()
            _number = 0
        End Sub

        Public Sub New(ByVal number As Integer)
            _number = number
        End Sub

        Public Property Number() As Integer
            Get
                Return _number
            End Get
            Set(value As Integer)
                _number = value
            End Set
        End Property
    End Class

End Namespace

And here is the MarkUp page: 

    <%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Blah.aspx.vb" Inherits="GridViewUpdateTest.Blah" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    </div>
        <br />
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="ObjectDataSource1">
            <Columns>
                <asp:CommandField ShowEditButton="True" />
                <asp:BoundField DataField="Number" HeaderText="Number" SortExpression="Number" />
            </Columns>
        </asp:GridView>
        <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="getNumber" TypeName="GridViewUpdateTest.Blah" UpdateMethod="updateNumber">
            <UpdateParameters>
                <asp:Parameter Name="number" Type="Int32" />
            </UpdateParameters>
        </asp:ObjectDataSource>
        <asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False" DataSourceID="ObjectDataSource2">
            <Columns>
                <asp:BoundField DataField="Number" HeaderText="Number" SortExpression="Number" />
            </Columns>
        </asp:GridView>


        <asp:ObjectDataSource ID="ObjectDataSource2" runat="server" SelectMethod="getUpdatedNumber" TypeName="GridViewUpdateTest.Blah"></asp:ObjectDataSource>        
    </form>
</body>
</html>

如何更新第二个＆＃39; GridView基于＆＃39; first＆＃39;的更新。网格视图？

0 个答案: