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我正在使用 SharpShell 在 c# 中创建一个 IconHandler shell 扩展。这是我的dll的代码。

using SharpShell.Attributes;
using SharpShell.SharpIconHandler;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace DllIconHandler
{
    [ComVisible(true)]
    [COMServerAssocation(AssociationType.ClassOfExtension, ".jxe")]
    public class DllIconHandler : SharpIconHandler
    {
        protected override Icon GetIcon(bool smallIcon, uint iconSize)
        {
            Icon icon = null;
            FileInfo file = new FileInfo(SelectedItemPath);
            long size = file.Length;

            if (size > 0)
            {
                icon = new Icon("C:\\Users\\Owner\\Desktop\\icon1.ico");
            }
            else
            {
                icon = new Icon("C:\\Users\\Owner\\Desktop\\icon2.ico");
            }

            return GetIconSpecificSize(icon, new Size((int)iconSize, (int)iconSize));
        }
    }
}

我将它构建到一个 dll 中并将 dll 移动到我的桌面上。然后我以管理员身份在命令提示符下使用以下命令在 dll 上运行 regasm。

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe C:\Users\Owner\Desktop\DllIconHandler.dll /codebase

但是当我这样做时会出现错误

RegAsm : error RA0000 : An error occurred inside the user defined Register/Unreg
ister functions: System.InvalidOperationException: Cannot open default icon key
for class jxe_auto_file
   at SharpShell.ServerRegistration.ServerRegistrationManager.SetIconHandlerDefa
ultIcon(RegistryKey classesKey, String className)
   at SharpShell.ServerRegistration.ServerRegistrationManager.RegisterServerAsso
ciations(Guid serverClsid, ServerType serverType, String serverName, Association
Type associationType, IEnumerable`1 associations, RegistrationType registrationT
ype)
   at SharpShell.SharpShellServer.DoRegister(Type type, RegistrationType registr
ationType)

注册表中似乎有问题。

4

1 回答 1

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The entry in your registry should looks like this:

HKEY_CLASSES_ROOT
jxe_auto_file
DefaultIcon: (Default) (Path to icon)

I'm pretty sure there was no "DefaultIcon" in your jxe_auto_file entry

于 2015-01-20T13:05:40.207 回答