CODEWITHSUNDEEP
c#registry
Mr Mods
Mr Mods

Reputation: 33

Reading a value from registry C#

I am trying to read the recent

this is the code i have right now:

RegistryKey registryKey = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Visual Studio\12.0\ProjectMRUList");
            string data2 = (string)registryKey.GetValue("File1".ToUpper());
            recentProjects.Items.Add(data2);

i keep getting a null error.

System.NullReferenceException: Object reference not set to an instance of an object.

The error is on 

string data2 = (string)registryKey.GetValue("File1");

Upvotes: 1

Views: 316

Answers (1)

abrown
abrown

Reputation: 715

The subkey is actually "VisualStudio", not "Visual Studio". Try the below:

    RegistryKey registryKey = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\VisualStudio\12.0\ProjectMRUList");
    string data2 = (string)registryKey.GetValue("File1".ToUpper());

Or better still, you can have control over whether the environment is 32 or 64 bit, for example...

using (var hklm = RegistryKey.OpenBaseKey(RegistryHive.CurrentUser, RegistryView.Registry64))
        {
            using (var key = hklm.OpenSubKey(@"Software\Microsoft\VisualStudio\12.0\ProjectMRUList"))
            {
                string data2 = (string)key.GetValue("File1".ToUpper());
            }
        }

Upvotes: 1

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