本文整理汇总了C#中Microsoft.Win32.RegistryKey.OpenSubKey方法的典型用法代码示例。如果您正苦于以下问题：C# RegistryKey.OpenSubKey方法的具体用法？C# RegistryKey.OpenSubKey怎么用？C# RegistryKey.OpenSubKey使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Microsoft.Win32.RegistryKey的用法示例。
在下文中一共展示了RegistryKey.OpenSubKey方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
using Microsoft.Win32;
using Microsoft.VisualBasic;
public class Example
{
public static void Main()
{
// Delete and recreate the test key.
Registry.CurrentUser.DeleteSubKey("RegistryOpenSubKeyExample", false);
RegistryKey rk = Registry.CurrentUser.CreateSubKey("RegistryOpenSubKeyExample");
rk.Close();
// Obtain an instance of RegistryKey for the CurrentUser registry
// root.
RegistryKey rkCurrentUser = Registry.CurrentUser;
// Obtain the test key (read-only) and display it.
RegistryKey rkTest = rkCurrentUser.OpenSubKey("RegistryOpenSubKeyExample");
Console.WriteLine("Test key: {0}", rkTest);
rkTest.Close();
rkCurrentUser.Close();
// Obtain the test key in one step, using the CurrentUser registry
// root.
rkTest = Registry.CurrentUser.OpenSubKey("RegistryOpenSubKeyExample");
Console.WriteLine("Test key: {0}", rkTest);
rkTest.Close();
// Open the test key in read/write mode.
rkTest = Registry.CurrentUser.OpenSubKey("RegistryOpenSubKeyExample", true);
rkTest.SetValue("TestName", "TestValue");
Console.WriteLine("Test value for TestName: {0}", rkTest.GetValue("TestName"));
rkTest.Close();
} //Main
} //Example示例2: Main
//引入命名空间
using System;
using Microsoft.Win32;
using System.Diagnostics;
public class Example
{
public static void Main()
{
const int LIMIT = 100;
RegistryKey cu = Registry.CurrentUser;
const string testKey = "RegistryKeyPermissionCheckExample";
Console.WriteLine("Generating {0} key/value pairs.", LIMIT);
RegistryKey rk = cu.CreateSubKey(testKey);
for (int i = 0; i < LIMIT; i++)
{
rk.SetValue("Key" + i, i);
}
rk.Close();
Stopwatch s = new Stopwatch();
// On the default setting, security is checked every time
// a key/value pair is read.
rk = cu.OpenSubKey(testKey, RegistryKeyPermissionCheck.Default);
s.Start();
for (int i = 0; i < LIMIT; i++)
{
rk.GetValue("Key" + i, i);
}
s.Stop();
rk.Close();
long delta1 = s.ElapsedTicks;
s.Reset();
// When the key is opened with ReadSubTree, security is
// not checked when the values are read.
rk = cu.OpenSubKey(testKey, RegistryKeyPermissionCheck.ReadSubTree);
s.Start();
for (int i = 0; i < LIMIT; i++)
{
rk.GetValue("Key" + i, i);
}
s.Stop();
rk.Close();
long delta2 = s.ElapsedTicks;
double faster = (double) (delta1 - delta2) / (double) delta1;
Console.WriteLine("ReadSubTree is {0}% faster for {1} values.",
(faster * 100).ToString("0.0"), LIMIT);
cu.DeleteSubKey(testKey);
}
}输出：
Generating 100 key/value pairs. ReadSubTree is 23.4% faster for 100 values.
示例3: SearchSubKeys
//引入命名空间
using System;
using Microsoft.Win32;
class MainClass
{
public static void SearchSubKeys(RegistryKey root, String searchKey)
{
foreach (string keyname in root.GetSubKeyNames())
{
try
{
using (RegistryKey key = root.OpenSubKey(keyname))
{
if (keyname == searchKey) {
foreach (string valuename in key.GetValueNames())
{
if (key.GetValue(valuename) is String)
{
Console.WriteLine(" Value : {0} = {1}",
valuename, key.GetValue(valuename));
}
}
}
SearchSubKeys(key, searchKey);
}
}
catch (System.Security.SecurityException)
{
}
}
}
public static void Main(String[] args)
{
using (RegistryKey root = Registry.CurrentUser)
{
string myKey="Java";
SearchSubKeys(root, myKey);
}
}
}