Question

使用ajax计时器处理一个应用程序以显示来自不同目录的图像，例如'C：\ Core \ Gate1 \ Gate1.jpg'并刷新页面以显示新更新的图像。它工作4到5个小时然后丢失内存错误。

通过设备上的CE 6.5和IE 7窗口访问网页。

我怀疑它是窗口CE浏览器的问题，但是没有其他方法可以从不同的目录中读取图像。

JavaScript不会允许它，因为它是安全威胁。

我有什么办法可以解决这个问题。任何建议都非常感激。

以下是我的更新小组：

  <asp:UpdatePanel ID="updatepanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:Timer ID="ImageTimer" Enabled="true" Interval="100" runat="server" OnTick="timer1_Tick">
            </asp:Timer>
            <div>
                <asp:Image ID="image1" runat="server" Height="120px" Width="100px" />
                </div>
                </ContentTemplate>
        <Triggers>
        <asp:AsyncPostBackTrigger ControlID="ImageTimer" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

计时器刻度代码：

protected void timer1_Tick(object sender, EventArgs e)
{
    try
    {
        String gateName = ddlGate.SelectedItem.ToString();

        string path = IMAGELOC + gateName + "\\" + gateName + ".jpg";
        string actualCardId = string.Empty;
        GateManager.GateData gateData = new GateManager.GateData();
        gateData = GateManager.GetGateData(gateName);
        actualCardId = gateData.CardId;
        lblName.Text = gateData.FirstName + " " + gateData.LastName;
        lblExp.Text = gateData.Exp;

        if (actualCardId != "NOTFOUND" && actualCardId != "INVALID" 
            && actualCardId != "" && !string.IsNullOrEmpty(actualCardId))
        {
            image1.ImageUrl = "Image.aspx?path=" + path + "&CardId=" + actualCardId;
        }
        else if (actualCardId == "NOTFOUND")
        {
            //GET IMAGE FROM DIR
            image1.ImageUrl = "Images/ImageNotFound.jpg";
        }
        else if (actualCardId == "" || actualCardId == null)
        {
            image1.ImageUrl = "Images/ImageNotFound.jpg";
        }
        else if (actualCardId == "INVALID")
        {
            //GET IMAGE FROM DIR
            image1.ImageUrl = "Images/invalidcard.jpg";
        }
    }
    catch
    {
    }
}

更新： Image.aspx代码：

protected void Page_Load(object sender, EventArgs e)
{
    try
    {
        Response.ContentType = "image/jpeg"; // for JPEG file
        string physicalFileName = Request.QueryString["path"];
        Response.WriteFile(physicalFileName);
    }
    catch
    {
    }
}

用于窗口CE IE 7的ASP.NET AJAX - 内存不足异常

0 个答案: