Question

I have already looked at existing topics, so please try to refrain from dropping links here.

I want to get the value of a registry key – plain and simple. Here is what I have so far.

Registry:
1) Made a key under

Current_User\Software\Custom_Subkey\Custom_Value\Custom_key\string_value

I am trying to find the string_value

        string reg_subKey = "Software\\Custom_Subkey\\Custom_Value";

        RegistryKey root = Registry.CurrentUser.CreateSubKey(reg_subKey);


        foreach (string keyname in root.GetValueNames())
        {
            textBox4.AppendText(keyname.ToString() + Environment.NewLine);

// Appends the following data to textBox4 once the foreach is completed:
// Header1
// Header2
// Header3
// Header4
// Header5

// Now I want to get the VALUES of each header:

            using (RegistryKey key = root.OpenSubKey(keyname))
            {

**// THIS LINE GETS HIGHLIGHTED WITH THE FOLLOWING ERROR:
"Object reference not set to an instance of an object.**"
                MessageBox.Show(key.ValueCount.ToString());
            }
        }

Hopefully this is a simple fix. I look forward to hearing your responses.
Thanks,
Evan

Answer 1

I believe you want root.GetSubKeyNames() in the loop not GetValueNames()

While values is working to get the values I would suggest the following loop:

foreach(string keyname in root.GetSubKeyNames())
{
    // use key to get value and set textbox4


    using (RegistryKey key = root.OpenSubKey(keyname))
    {
       MessageBox.Show(key.ValueCount.ToString());
    }
 }