Question

有人可以解释一下firefox updatepanel异步回发与IE中执行的回复之间的速度差异吗？

500个对象的平均Firefox回发时间：1.183秒

平均IE回发时间500个对象：0.295秒

使用firebug我可以看到FireFox中的大部分时间花在服务器端。总共1.04秒。

鉴于这一事实我唯一可以假设的是导致这个问题是ASP.Net在两个浏览器之间呈现控件的方式。

之前有没有人遇到这个问题？

VB.Net代码

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
        GridView1.DataBind()
    End Sub

    Public Function GetStockList() As StockList
        Dim res As New StockList

        For l = 0 To 500
            Dim x As New Stock With {.Description = "test", .ID = Guid.NewGuid}
            res.Add(x)
        Next

        Return res
    End Function


    Public Class Stock
        Private m_ID As Guid
        Private m_Description As String

        Public Sub New()
        End Sub

        Public Property ID() As Guid
            Get
                Return Me.m_ID
            End Get
            Set(ByVal value As Guid)
                Me.m_ID = value
            End Set
        End Property

        Public Property Description() As String
            Get
                Return Me.m_Description
            End Get
            Set(ByVal value As String)
                Me.m_Description = value
            End Set
        End Property
    End Class

    Public Class StockList
        Inherits List(Of Stock)

    End Class

标记

<form id="form1" runat="server">
     <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

    <script type="text/javascript" language="Javascript">

function timestamp_class(this_current_time, this_start_time, this_end_time, this_time_difference) { 
        this.this_current_time = this_current_time;
        this.this_start_time = this_start_time;
        this.this_end_time = this_end_time;
        this.this_time_difference = this_time_difference;
        this.GetCurrentTime = GetCurrentTime;
        this.StartTiming = StartTiming;
        this.EndTiming = EndTiming;
    }

    //Get current time from date timestamp
    function GetCurrentTime() {
        var my_current_timestamp;
        my_current_timestamp = new Date();      //stamp current date & time
        return my_current_timestamp.getTime();
        }

    //Stamp current time as start time and reset display textbox
    function StartTiming() {
        this.this_start_time = GetCurrentTime();    //stamp current time
    }

    //Stamp current time as stop time, compute elapsed time difference and display in textbox
    function EndTiming() {
        this.this_end_time = GetCurrentTime();      //stamp current time
        this.this_time_difference = (this.this_end_time - this.this_start_time) / 1000; //compute elapsed time
        return this.this_time_difference;
    }

//-->
</script>
<script type="text/javascript" language="javascript">
    var time_object = new timestamp_class(0, 0, 0, 0); //create new time object and initialize it   

    Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler);
    Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
    function BeginRequestHandler(sender, args) {
        var elem = args.get_postBackElement();
        ActivateAlertDiv('visible', 'divAsyncRequestTimer', elem.value + '');
        time_object.StartTiming();
    }
    function EndRequestHandler(sender, args) {
        ActivateAlertDiv('visible', 'divAsyncRequestTimer', '(' + time_object.EndTiming() + ' Seconds)');
    }
    function ActivateAlertDiv(visstring, elem, msg) {
        var adiv = $get(elem);
        adiv.style.visibility = visstring;
        adiv.innerHTML = msg;
    }
</script>

    <asp:UpdatePanel ID="UpdatePanel1" runat="server">
    <Triggers>
        <asp:AsyncPostBackTrigger ControlID="Button1" EventName="click" />
    </Triggers>
        <ContentTemplate>
            <asp:Button ID="Button1" runat="server" Text="Button" />
            <div id="divAsyncRequestTimer" style="font-size:small;">
            </div>
            <asp:GridView ID="GridView1" runat="server" DataSourceID="ObjectDataSource1" AutoGenerateColumns="False">
                <Columns>
                    <asp:BoundField DataField="ID" HeaderText="ID" SortExpression="ID" />
                    <asp:BoundField DataField="Description" HeaderText="Description" 
                        SortExpression="Description" />
                </Columns>
            </asp:GridView>

            <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" 
                SelectMethod="GetStockList" TypeName="WebApplication1._Default">
            </asp:ObjectDataSource>
        </ContentTemplate>
    </asp:UpdatePanel>

    </form>

Answer 1

我猜它是编译页面的初始时间。当我首先运行IE页面时，它会在一秒钟后渲染，然后在firefox中运行页面大约需要0.2秒。

微软是否讨厌firefox？ ASP.Net gridview性能在firefox中的bug？

1 个答案: