I'm doing an application in Visual Studio, with the intention of working with extension files itself ( .rmt , subject to change) and can open it later.
I want the user to double-click the files with this extension, the system opens the file using my application, so that it can process the file as I want.
How can I link this extension to my application?
ClickOnce creates extensions , but you you can also create a key in the registry to associate a file extension with its executable. First, declare this static method:
public static void SetAssociation(string Extension, string KeyName, string OpenWith, string FileDescription)
{
RegistryKey BaseKey;
RegistryKey OpenMethod;
RegistryKey Shell;
RegistryKey CurrentUser;
BaseKey = Registry.ClassesRoot.CreateSubKey(Extension);
BaseKey.SetValue("", KeyName);
OpenMethod = Registry.ClassesRoot.CreateSubKey(KeyName);
OpenMethod.SetValue("", FileDescription);
OpenMethod.CreateSubKey("DefaultIcon").SetValue("", "\"" + OpenWith + "\",0");
Shell = OpenMethod.CreateSubKey("Shell");
Shell.CreateSubKey("edit").CreateSubKey("command").SetValue("", "\"" + OpenWith + "\"" + " \"%1\"");
Shell.CreateSubKey("open").CreateSubKey("command").SetValue("", "\"" + OpenWith + "\"" + " \"%1\"");
BaseKey.Close();
OpenMethod.Close();
Shell.Close();
CurrentUser = Registry.CurrentUser.CreateSubKey(@"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.ucs");
CurrentUser = CurrentUser.OpenSubKey("UserChoice", RegistryKeyPermissionCheck.ReadWriteSubTree, System.Security.AccessControl.RegistryRights.FullControl);
CurrentUser.SetValue("Progid", KeyName, RegistryValueKind.String);
CurrentUser.Close();
}
Well, you can programmatically associate your application using this method:
SetAssociation(".rmt", "Nome_da_extensao", Application.ExecutablePath, "Minha extenção .rmt");
I got this response from this link here .