C#ASP.NET使用ASP.NET中代码隐藏的布尔变量

Question

我知道如何使用从代码到后面的String变量,并在网页上显示该字符串.我想要做的是类似的,除了不是显示字符串,我想将代码后面的布尔值传递给ASP.NET页面,以便它的'true/false值可以控制Print按钮(true/false)在ReportViewer中.我的诊断工作在于它显示字符串"True"或"False",这是正确的."ShowPrintButton"和"ShowExportControls"虽然不起作用,但按钮未启用.我需要做什么？我认为值正在传递,但也许它是作为字符串传递的,我需要做一些事情让它作为布尔值传递....

这是代码......

代码背后:

    //Variables
    public Boolean exportEnabled { get; set; }
    public Boolean printEnabled { get; set; }

    //Page Load
    protected void Page_Load(object sender, EventArgs e)
    {
        // Add a handler for SubreportProcessing
        reportViewerPrintAndExport.LocalReport.SubreportProcessing +=
            new SubreportProcessingEventHandler(LocalReport_SubreportProcessing);

        if (!IsPostBack)
        {
            // Display the report
            DisplayReport(Session[SessionKeys.KEY_CERT_NO].ToString(), (CalibrationType)Session[SessionKeys.KEY_CERT_TYPE]);
        }
        DataBind();
    }

    private void DisplayReport(string certNo, CalibrationType calType)
    {
        string[] rolesList = Roles.GetRolesForUser();

        //manage print and export buttons.
        if ((rolesList.Contains("admin")) || (rolesList.Contains("Admin")))
        {
            exportEnabled = true;
            printEnabled = true;
        }
        else if ((rolesList.Contains("Operator")) || (rolesList.Contains("operator")))
        {
            exportEnabled = false;
            printEnabled = false;
        }
    }

ASPX:

<!-- DIAGNOSTIC -->
<asp:label runat="server" text="-" /><asp:label runat="server" text="<%# printEnabled %>" /><asp:label runat="server" text="-" />

<asp:Panel ID="ReportPanelPrintAndExport" runat="server" HorizontalAlign="Left">

    <!--Why does this not work? -->
    <rsweb:ReportViewer ShowPrintButton="<%# printEnabled %>" ShowExportControls="<%# exportEnabled %>" ID="reportViewerPrintAndExport" runat="server" Height="100%" Width="100%" 
        ShowBackButton="False" ZoomMode="FullPage" 
        ShowRefreshButton="False" ProcessingMode="Local">
    </rsweb:ReportViewer>

Answer 1

在你的代码中,只需在任何地方设置该属性即可

    if ((rolesList.Contains("admin")) || (rolesList.Contains("Admin")))
    {
        reportViewerPrintAndExport.ShowPrintButton = true;
        reportViewerPrintAndExport.ShowExportControls = true;
    }
    else if ((rolesList.Contains("Operator")) || (rolesList.Contains("operator")))
    {
        reportViewerPrintAndExport.ShowPrintButton = false;
        reportViewerPrintAndExport.ShowExportControls = false;
    }

没有必要尝试在客户端这样做.