Help! registry access in Class library

Question

I'm making class library(dll) but there is some problems. I can't access registry.

here is code snippet.

                    int lastSelected = 0;
                    lastSelected = (int)Registry.CurrentUser.OpenSubKey("Software\\MyApp", true).GetValue("lastSelected");
                    MessageBox.Show("value: " + lastSelected.ToString());

This project build fine, but the code not work, with no error messages. (MessageBox didn't show up)

 

I also add below code in AssemblyInfo.cs file.

[assembly: RegistryPermissionAttribute(SecurityAction.RequestMinimum, ViewAndModify = "HKEY_CURRENT_USER\\Software\\MyApp")]

I don't know what's wrong.

Answer 1

Hi,

Are you sure that the code reaches 'lastSelected = (int)Registry.CurrentUser...' line?

Thank you.

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Answer 2

Found solution.

lastSelected = (int)Registry.CurrentUser.OpenSubKey("Software\\MyApp", true).GetValue("lastSelected");

to

lastSelected = Convert.ToInt32(Registry.CurrentUser.OpenSubKey("Software\\MyApp", true).GetValue("lastSelected"));