下面的代码是一个应该可以工作的函数，它在 Windows 注册表中添加了所需的值。通常我在我的可执行文件中运行 SelfCreateAssociation(".abc") 。 （表单构造函数或 onload 或 onshown）每次执行可执行文件时，它将更新当前用户的注册表项。 （适合调试，如果您有一些更改）。
如果您需要有关所涉及的注册表项的详细信息，请查看此 MSDN 链接。
https://msdn.microsoft.com/en-us/library/windows/desktop/dd758090(v=vs.85).aspx
获取有关常规 ClassesRoot 注册表项的更多信息。请参阅这篇 MSDN 文章。
https://msdn.microsoft.com/en-us/library/windows/desktop/ms724475(v=vs.85).aspx
public enum KeyHiveSmall
{
ClassesRoot,
CurrentUser,
LocalMachine,
}
/// <summary>
/// Create an associaten for a file extension in the windows registry
/// CreateAssociation(@"vendor.application",".tmf","Tool file",@"C:\Windows\SYSWOW64\notepad.exe",@"%SystemRoot%\SYSWOW64\notepad.exe,0");
/// </summary>
/// <param name="ProgID">e.g. vendor.application</param>
/// <param name="extension">e.g. .tmf</param>
/// <param name="description">e.g. Tool file</param>
/// <param name="application">e.g. @"C:\Windows\SYSWOW64\notepad.exe"</param>
/// <param name="icon">@"%SystemRoot%\SYSWOW64\notepad.exe,0"</param>
/// <param name="hive">e.g. The user-specific settings have priority over the computer settings. KeyHive.LocalMachine need admin rights</param>
public static void CreateAssociation(string ProgID, string extension, string description, string application, string icon, KeyHiveSmall hive = KeyHiveSmall.CurrentUser)
{
RegistryKey selectedKey = null;
switch (hive)
{
case KeyHiveSmall.ClassesRoot:
Microsoft.Win32.Registry.ClassesRoot.CreateSubKey(extension).SetValue("", ProgID);
selectedKey = Microsoft.Win32.Registry.ClassesRoot.CreateSubKey(ProgID);
break;
case KeyHiveSmall.CurrentUser:
Microsoft.Win32.Registry.CurrentUser.CreateSubKey(@"Software\Classes\" + extension).SetValue("", ProgID);
selectedKey = Microsoft.Win32.Registry.CurrentUser.CreateSubKey(@"Software\Classes\" + ProgID);
break;
case KeyHiveSmall.LocalMachine:
Microsoft.Win32.Registry.LocalMachine.CreateSubKey(@"Software\Classes\" + extension).SetValue("", ProgID);
selectedKey = Microsoft.Win32.Registry.LocalMachine.CreateSubKey(@"Software\Classes\" + ProgID);
break;
}
if (selectedKey != null)
{
if (description != null)
{
selectedKey.SetValue("", description);
}
if (icon != null)
{
selectedKey.CreateSubKey("DefaultIcon").SetValue("", icon, RegistryValueKind.ExpandString);
selectedKey.CreateSubKey(@"Shell\Open").SetValue("icon", icon, RegistryValueKind.ExpandString);
}
if (application != null)
{
selectedKey.CreateSubKey(@"Shell\Open\command").SetValue("", "\"" + application + "\"" + " \"%1\"", RegistryValueKind.ExpandString);
}
}
selectedKey.Flush();
selectedKey.Close();
}
/// <summary>
/// Creates a association for current running executable
/// </summary>
/// <param name="extension">e.g. .tmf</param>
/// <param name="hive">e.g. KeyHive.LocalMachine need admin rights</param>
/// <param name="description">e.g. Tool file. Displayed in explorer</param>
public static void SelfCreateAssociation(string extension, KeyHiveSmall hive = KeyHiveSmall.CurrentUser, string description = "")
{
string ProgID = System.Reflection.Assembly.GetExecutingAssembly().EntryPoint.DeclaringType.FullName;
string FileLocation = System.Reflection.Assembly.GetExecutingAssembly().Location;
CreateAssociation(ProgID, extension, description, FileLocation, FileLocation + ",0", hive);
}