CODEWITHSUNDEEP
c#registryprivilegesadministration
saraa
saraa

Reputation: 51

How to read & write from registry without admin privileges_C#

I need to write and read keys in Registry without administrator mode.First I want to know is this possible to do?

Please find below code (It's working fine, when Visual studio open in Administrator mode)

Write

RegistryKey key = Registry.LocalMachine.OpenSubKey("Software", true);

key.CreateSubKey("AppName");
key = key.OpenSubKey("AppName", true);

key.CreateSubKey("AppVersion");
key = key.OpenSubKey("AppVersion", true);

key.SetValue("myval", "677");
key.Close();

Read

RegistryKey key = Registry.LocalMachine.OpenSubKey("Software", true);

  key.CreateSubKey("AppName");
  key = key.OpenSubKey("AppName", true);
   //if it does exist, retrieve the stored values  
  if (key != null)
  {
    string s = (string)key.GetValue("myval");
    Console.Read();
    key.Close();
   }

Please any one suggest a way to do this. (I tried to add below line as well)

Error :

ClickOnce does not support the request execution level 'requireAdministrator'.

Upvotes: 4

Views: 11217

Answers (1)

Rubarb
Rubarb

Reputation: 179

Here is an answer on how to write in registry without admin

Reading is done by using the RegistryKeyPermissionCheck.ReadSubTree option 

    RegistryKey baseRegistryKey = RegistryKey.OpenBaseKey(baseKey, RegistryView.Registry64);
    RegistryKey subRegistryKey = baseRegistryKey.OpenSubKey(subKey, RegistryKeyPermissionCheck.ReadSubTree);
    if (subRegistryKey != null)
    {
        object value64 = subRegistryKey.GetValue(value);
        if (value64 != null)
        {
            baseRegistryKey.Close();
            subRegistryKey.Close();
            return value64;
        }
        subRegistryKey.Close();
    }            
    baseRegistryKey.Close();

Then do the same with RegistryView.Registry32

Upvotes: 0

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