Vlc在Windows窗体中的表示 [英] Vlc In windows forms applaication

问题描述

任何人请建议我在我的Windows窗体应用程序中使用vlc播放器的libvlc插件的程序..提前感谢...

Anyone please suggest me the procedure to use libvlc plugin of vlc player in my windows form application.. Thanks in advance...

推荐答案

你可以使用开源libVLC绑定名为LibVLC.NET： http://libvlcnet.codeplex.com/ [ ^ ]。



第一页提供一个小代码示例并解释在何处查找教程。这就是你所需要的。

-SA

You can use the open-source libVLC binding called LibVLC.NET: http://libvlcnet.codeplex.com/[^].

The first page provides a small code sample and explains where to find the tutorial. This is all you need.

—SA

Sachin Athrady写道：

Sachin Athrady wrote:

...它返回一个错误Vlc.DotNet.Forms.dll中发生了'System.NullReferenceException'类型的未处理异常

…it returns an error "An unhandled exception of type 'System.NullReferenceException' occurred in Vlc.DotNet.Forms.dll

你没有显示在哪里抛出对象引用未设置为对象实例消息的异常。



不用担心。这是最容易检测的情况之一它只是意味着某些引用类型的某个成员/变量通过使用和它的实例（非静态）成员解除引用，这需要此成员/变量为非null，但实际上它似乎为null简单地在调试器下执行它，它将停止执行抛出异常的位置。在该行上放置一个断点，重新启动应用程序并再次到达这一点。评估下一行中涉及的所有引用，看看哪一个为null它不一定是在你想出这个之后，修复代码：要么确保成员/变量被正确初始化为非空引用，要么将其检查为null，如果为null，则执行其他操作。



另请参阅：想要在按钮点击时显示下一条记录。但是如果下一条记录功能的条件对象引用没有设置为对象的实例 [ ^ ]。



有时候，你不能在调试器下，由于一个或另一个原因做到这一点。一个非常讨厌的情况是，只有在调试信息不​​可用时构建软件时才会出现问题。在这种情况下，你必须使用更难的方式。首先，你需要确保你永远不会通过静默处理异常来阻止异常的传播（这是开发人员对自己的犯罪，但很常见）。您需要在每个线程的最顶层堆栈帧上捕获绝对所有异常。如果处理类型 System.Exception 的异常，则可以执行此操作。在处理程序中，您需要记录所有异常信息，尤其是 System.Exception.StackTrace ：

http://msdn.microsoft.com/en-us/library/system.exception.aspx [ ^ ]，

http://msdn.microsoft.com/en-us/library/system.exception。 stacktrace.aspx [ ^ ]。



堆栈跟踪只是一个字符串，显示从throw语句到处理程序的异常传播的完整路径。通过阅读，您总能找到目的。对于日志记录，使用类 System.Diagnostics.EventLog ：

http://msdn.microsoft.com/en-us/library/system.diagnostics.eventlog.aspx [ ^ ]。

-SA

You did not show where the exception with the message "Object reference not set to an instance of an object" is thrown.

Not to worry. This is one of the very easiest cases to detect and fix. It simply means that some member/variable of some reference type is dereferenced by using and of its instance (non-static) members, which requires this member/variable to be non-null, but in fact it appears to be null. Simply execute it under debugger, it will stop the execution where the exception is thrown. Put a break point on that line, restart the application and come to this point again. Evaluate all references involved in next line and see which one is null while it needs to be not null. After you figure this out, fix the code: either make sure the member/variable is properly initialized to a non-null reference, or check it for null and, in case of null, do something else.

Please see also: want to display next record on button click. but got an error in if condition of next record function "object reference not set to an instance of an object"[^].

Sometimes, you cannot do it under debugger, by one or another reason. One really nasty case is when the problem is only manifested if software is built when debug information is not available. In this case, you have to use the harder way. First, you need to make sure that you never block propagation of exceptions by handling them silently (this is a crime of developers against themselves, yet very usual). The you need to catch absolutely all exceptions on the very top stack frame of each thread. You can do it if you handle the exceptions of the type System.Exception. In the handler, you need to log all the exception information, especially the System.Exception.StackTrace:
http://msdn.microsoft.com/en-us/library/system.exception.aspx[^],
http://msdn.microsoft.com/en-us/library/system.exception.stacktrace.aspx[^].

The stack trace is just a string showing the full path of exception propagation from the throw statement to the handler. By reading it, you can always find ends. For logging, it's the best (in most cases) to use the class System.Diagnostics.EventLog:
http://msdn.microsoft.com/en-us/library/system.diagnostics.eventlog.aspx[^].

Good luck,

—SA

查看这些链接
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/>

VideoLan DotNet for WinForm，WPF& Silverlight 5 [ ^ ]



DMediaPlayer - 简单的VLC前端 [ ^ ]



问候..：）

See these links

VideoLan DotNet for WinForm, WPF & Silverlight 5[^]

DMediaPlayer - Simple VLC frontend[^]

Regards..:)

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