如何在 Windows CE 中从注册表中读取和写入值？

Question

如何将值1插入到HKEY_LOCAL_MACHINE\\SOFTWARE\\WJST\\WLAN的属性CDInsert并读取回来？

Answer 1

http://msdn.microsoft.com/en-us/library/microsoft.win32.registry%28v=VS.90%29.aspx

Try this:

//using Microsoft.Win32;

RegistryKey reg = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\WJST\WLAN", true); 

// set value of "CDInsert" to 1
reg.SetValue("CDInsert", 1, RegistryValueKind.DWord);

// get value of "CDInsert"; return 0 if value not found
int value = (int)reg.GetValue("CDInsert", 0);

Answer 2

Sometimes if you try to access the key directly with key.SetValue() throws an exception because you don't have the rights.

You can use Registry.SetValue() like in the documentation or like following example:

const string root = "HKEY_LOCAL_MACHINE"; // Root of your path
const string path = @"\SOFTWARE\WJST\WLAN"; // Path of your key
const string default = "CDInsert"; // Name of the key
const string value = "1";

Registry.SetValue(root + "\\" + path, default, value);

Pay attention if your registry is volatile than you should flush and persist:

const UInt32 HKEY_LOCAL_MACHINE = 0x80000002;

IntPtr hkeyLocalMachine = new IntPtr(unchecked((int)HKEY_LOCAL_MACHINE ));
RegFlushKey(hkeyLocalMachine);

For use RegFlushKey you need to add an extern method:

[DllImport("coredll.dll")]
public static extern int RegFlushKey(IntPtr hKey);

Usefull links: pinvoke.net , regflushkey .