如何使C＃应用程序用作某些文件的默认程序？ [英] How to make a C# Application work as the default program for certain files?

问题描述

我的应用程序中有一个图片框。当我在Windows中打开图像时，我想使用自己的应用程序，而不是打开的默认程序来显示该图像，而是使该程序包含图片框来显示图像。

My application has a picture box in it. When I open an image in Windows, instead of the default program that opens to show that image, I want to use my own application and have that program containing the picture box show the image.

推荐答案

我最近做了此操作，尽管我使用了其他操作，而不是默认的打开操作。

I did this recently, though I used a different action, not the default Open action.

首先，您会发现扩展名的文件类型，例如.jpg：

First you find out file type of some extension, say .jpg:

var imgKey = Registry.ClassesRoot.OpenSubKey(".jpg")
var imgType = key.GetValue("");

然后，找出可执行文件的路径并构建命令字符串：

Then you find out the path to your executable and build the "command string":

String myExecutable = Assembly.GetEntryAssembly().Location;
String command = "\"" + myExecutable + "\"" + " \"%1\"";

并注册可执行文件以打开以下类型的文件：

And register your executable to open files of that type:

String keyName = imgType + @"\shell\Open\command";
using (var key = Registry.ClassesRoot.CreateSubKey(keyName)) {
    key.SetValue("", command);
}

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