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wpf - 如何在 Web 浏览器控件中显示 PDF,而不是打开 Acrobat Reader

转载 作者:行者123 更新时间:2023-12-02 21:15:28 25 4
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我使用的是 Acrobat Reader 11.0.3 和 window 7、Visual studio 2012,并且已在管理插件中启用了 Acrobat Reader

并关注WPF webbrowser opens PDF file in Adobe reader window

尝试了两种方法后仍然报错

网页导航已取消即使使用管理员帐户打开WPF程序

private void CheckAndFixWebBrowserRenderingEngine()
{
RegistryKey baseRegistryKey = Registry.LocalMachine;
string renderingEngineSubKeyString = @"SOFTWARE";

// 64bit operationg systems have another registry path
if (Environment.Is64BitOperatingSystem)
{
renderingEngineSubKeyString += @"\Wow6432Node";
}

renderingEngineSubKeyString += @"\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION";

//var assemblyValueKey = System.IO.Path.GetFileName(App.ResourceAssembly.Location);
var assemblyValueKey = System.IO.Path.GetFileName(System.Windows.Application.ResourceAssembly.Location);

var renderingEngingeValue = 9999; // check other values below

try
{
RegistryKey sk1 = baseRegistryKey.CreateSubKey(renderingEngineSubKeyString);

var value = sk1.GetValue(assemblyValueKey);
if (value == null || value.ToString() != renderingEngingeValue.ToString())
{
sk1.SetValue(assemblyValueKey, renderingEngingeValue);

//LogHandler.Instance.Add(string.Format("Did update webbrowser rendering engine from {0} to 9000.", value == null ? "[missing]" : value));
}
}
catch (Exception ex)
{
//LogHandler.Instance.Add("Could not check webbrowser rendering engine in registry.");
//LogHandler.Instance.Add(ex.ToString(), Logging.LoggingPriorities.Exception);
}

/*
9999 (0x270F)
Internet Explorer 9. Webpages are displayed in IE9 Standards mode, regardless of the !DOCTYPE directive.

9000 (0x2328)
Internet Explorer 9. Webpages containing standards-based !DOCTYPE directives are displayed in IE9 mode.

8888 (0x22B8)
Webpages are displayed in IE8 Standards mode, regardless of the !DOCTYPE directive.

8000 (0x1F40)
Webpages containing standards-based !DOCTYPE directives are displayed in IE8 mode.

7000 (0x1B58)
Webpages containing standards-based !DOCTYPE directives are displayed in IE7 Standards mode.
*/
}

public ReportForm()
{
this.formID = "Test Report";
//base.Initialization();
InitializeComponent();
CheckAndFixWebBrowserRenderingEngine();

String PDFPath = @"C:\Users\LAB-User2\Downloads\Elimination_Methods_in_Polynomial_Computer_Alge(Bookos.org).pdf";
WebBro1.Navigate("file:///" + PDFPath);

方法2

我还尝试了另一种方法,添加引用windowformintegration并使用winform的UserControl,它只能在独立的WPF小项目中工作当将其集成到我的大项目中时,出现了上述错误

String PDFPath = @"C:\Users\LAB-User2\Downloads\Elimination_Methods_in_Polynomial_Computer_Alge(Bookos.org).pdf";
//WebBro1.Navigate("file:///" + PDFPath);
webBrowser1.Navigate("file:///" + PDFPath);

private System.Windows.Forms.WebBrowser webBrowser1;
<WindowsFormsHost Margin="1" x:Name="windowsFormsHost1" Height="600" HorizontalAlignment="Left" VerticalAlignment="Bottom" Width="1000"/>

var uc = new UserControl1();
this.windowsFormsHost1.Child = uc;


application.UI.CreateNewForm("Test Report", new Client.Reporting.Pages2.ClientStatement.ReportForm());

public partial class ReportForm : BaseForm

public void CreateNewForm(string title, BaseForm form)
mw.CreateNewForm(title, form);


public class BaseMainWindow : MetroWindow
{
public virtual void CreateNewForm(string title, BaseForm form)
{

}

更新:它要求在集成到大项目之前允许在 html 文件中阻止 Internet Explorer 中的内容和灰屏

<html>
<body>

<object
classid="clsid:ca8a9780-280d-11cf-a24d-444553540000" id="pdf1"
type="application/pdf"
data="C:\Users\LAB-User2\Downloads\Elimination_Methods_in_Polynomial_Computer_Alge(Bookos.org).pdf"
style="width: 100%; height: 100%">

<param name="src" "value="C:\Users\LAB-User2\Downloads\Elimination_Methods_in_Polynomial_Computer_Alge(Bookos.org).pdf"></param>

</object>

</body>
</html>

enter image description here

更新:在大型 WPF 项目中运行代码时,它显示一个红十字 enter image description here

更新:更新html后,它可以在独立的html文件中工作,但是集成到WPF大项目中,它无法显示,只显示红叉

String temphtml = "<!-- saved from url=(0016)http://localhost --><body style=\"border: 0; margin: 0; padding: 0\"><object classid=\"clsid:ca8a9780-280d-11cf-a24d-444553540000\" id=\"pdf1\"  type=\"application/pdf\" data=\"02_LAB_LeaveApplication.pdf\" style=\"width: 100%; height: 100%; border: 0; margin: 0; padding: 0\"></object><script>window.onload = function(){ window.focus();pdf1.setActive(); }</script></body>";
System.IO.File.WriteAllText(@"C:\Users\LAB-User2\Desktop\vpfs-ivpfs-client\iVPFS_Client\Application\bin\Debug\a.html", temphtml);
this.WebBro1.Navigate(System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "a.html"));

更新虽然运行从codeproject下载的项目,但它显示错误,然后可以显示pdf并且打开时有几次空白,然后我将代码和库复制到一个小型WPF项目并运行,它也出现错误,仅显示白色空白 https://docs.google.com/file/d/0Bxs_ao6uuBDUeV8yREVBOExSbW8/edit?usp=sharing

最佳答案

您可以生成一个临时 HTML 文件来嵌入所需的 PDF:

<body>

<object
classid="clsid:ca8a9780-280d-11cf-a24d-444553540000" id="pdf1"
type="application/pdf"
data="test.pdf"
style="width: 100%; height: 100%">

<param name="src" "value"="test.pdf"></param>

</object>

</body>

有趣的是,为了使其与本地 (file://) PDF 文档一起使用,我必须指定 data 属性和 src 参数。当它通过 http 从本地主机提供时,仅数据就足够了。

更新:我不知道为什么这对OP不起作用,所以我编写了一个非常基本的C# WebBrowser project演示这个。它在我的环境(Win8、IE10、Acrobat Reader 11.0.3)中运行得非常可靠。

更新:我想我明白为什么会发生这种情况。您的项目使用 WPF,而我的示例使用 Winforms。抱歉,我一开始没有注意到这一点。 WPF WebBrowser 有不同的 security model ,默认运行在IE保护模式下。

使用 WPF WebBrowser,我已经设法摆脱了提示(注意 <!-- saved from url=(0016)http://localhost --> ),但我确实确认 Acrobat Reader 控件只是时不时地挂起加载文件:

<!-- saved from url=(0016)http://localhost -->

<body style="border: 0; margin: 0; padding: 0">

<object
classid="clsid:ca8a9780-280d-11cf-a24d-444553540000" id="pdf1"
style="width: 100%; height: 100%; border: 0; margin: 0; padding: 0">

<param name="src" "value"="test.pdf"></param>

</object>

<script>
window.onload = function()
{
window.focus();
pdf1.setActive();
}
</script>

</body>

Acrobat Reader 控件 is known保护模式有问题。与其尝试寻找解决方法,直接在 WPF 项目中托管 Acrobat Reader ActiveX 控件可能更容易。具体方法如下:

http://www.codeproject.com/Articles/380019/Using-Adobe-Reader-in-a-WPF-app http://hugeonion.com/2009/04/06/displaying-a-pdf-file-within-a-wpf-application/

关于wpf - 如何在 Web 浏览器控件中显示 PDF,而不是打开 Acrobat Reader,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18054379/

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