從註冊表中讀取Vista/win上的用戶7

Question

我在我的程序的第一個安裝日期在註冊表中存儲一個值。 當我嘗試在Vista或Win 7上以USER（非admmin）的形式讀取此值時，出現錯誤，說我沒有足夠的權限來讀取註冊表？

如何以用戶身份讀取註冊表，或者如何保存安裝日期？

Answer 1

你的安裝程序有問題，我會說。受限制的權利不應阻止用戶閱讀HKLM \ Software配置單元中的密鑰。請確保您沒有要求寫入權限，將False作爲RegistryKey.OpenSubKey（）的第二個參數傳遞。

Answer 2

你不能。您必須是管理員才能編輯註冊表。因此，無論是要求用戶以管理員身份安裝它，還是將安裝日期存儲在某個文件中。

Answer 3

您可以通過運行安裝程序或從非管理員用戶以admin身份打開註冊表。

Answer 4

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Text; 
using System.Windows.Forms; 
using Microsoft.Win32; 

namespace RegistryTest1 
{ 
    public partial class Form1 : Form 
    { 
     public Form1() 
     { 
      InitializeComponent(); 
     } 

     private void button1_Click(object sender, EventArgs e) 
     { 
      WriteKey(); 
     } 


     private void button2_Click(object sender, EventArgs e) 
     { 
      ReadKey(); 
     } 

     private string keyPath = "SOFTWARE\\My Registry Key"; 
     private string keyName = "TestKeyName"; 
     private string keyValue = "TestValue"; 
     private void WriteKey() 
     { 
      Registry.LocalMachine.CreateSubKey(keyPath); 
      RegistryKey myKey = Registry.LocalMachine.OpenSubKey(keyPath, true); 
      myKey.SetValue(keyName, keyValue, RegistryValueKind.String); 
     } 

     private void ReadKey() 
     { 
      RegistryKey myKey = Registry.LocalMachine.OpenSubKey(keyPath, checkBox1.Checked); 
      string myValue = (string)myKey.GetValue(keyName); 
      textBox1.Text = myValue; 
     } 

     private void button3_Click(object sender, EventArgs e) 
     { 
      textBox1.Text = ""; 
     } 
    } 
} 

設計師代碼： ..........................

namespace RegistryTest1 
{ 
    partial class Form1 
    { 
     /// <summary> 
     /// Required designer variable. 
     /// </summary> 
     private System.ComponentModel.IContainer components = null; 

     /// <summary> 
     /// Clean up any resources being used. 
     /// </summary> 
     /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param> 
     protected override void Dispose(bool disposing) 
     { 
      if (disposing && (components != null)) 
      { 
       components.Dispose(); 
      } 
      base.Dispose(disposing); 
     } 

     #region Windows Form Designer generated code 

     /// <summary> 
     /// Required method for Designer support - do not modify 
     /// the contents of this method with the code editor. 
     /// </summary> 
     private void InitializeComponent() 
     { 
      this.textBox1 = new System.Windows.Forms.TextBox(); 
      this.button1 = new System.Windows.Forms.Button(); 
      this.button2 = new System.Windows.Forms.Button(); 
      this.checkBox1 = new System.Windows.Forms.CheckBox(); 
      this.button3 = new System.Windows.Forms.Button(); 
      this.SuspendLayout(); 
      // 
      // textBox1 
      // 
      this.textBox1.Location = new System.Drawing.Point(13, 13); 
      this.textBox1.Name = "textBox1"; 
      this.textBox1.Size = new System.Drawing.Size(641, 20); 
      this.textBox1.TabIndex = 0; 
      // 
      // button1 
      // 
      this.button1.Location = new System.Drawing.Point(13, 53); 
      this.button1.Name = "button1"; 
      this.button1.Size = new System.Drawing.Size(75, 23); 
      this.button1.TabIndex = 1; 
      this.button1.Text = "Write key"; 
      this.button1.UseVisualStyleBackColor = true; 
      this.button1.Click += new System.EventHandler(this.button1_Click); 
      // 
      // button2 
      // 
      this.button2.Location = new System.Drawing.Point(94, 53); 
      this.button2.Name = "button2"; 
      this.button2.Size = new System.Drawing.Size(75, 23); 
      this.button2.TabIndex = 2; 
      this.button2.Text = "Read key"; 
      this.button2.UseVisualStyleBackColor = true; 
      this.button2.Click += new System.EventHandler(this.button2_Click); 
      // 
      // checkBox1 
      // 
      this.checkBox1.AutoSize = true; 
      this.checkBox1.Location = new System.Drawing.Point(185, 57); 
      this.checkBox1.Name = "checkBox1"; 
      this.checkBox1.Size = new System.Drawing.Size(112, 17); 
      this.checkBox1.TabIndex = 3; 
      this.checkBox1.Text = "writable parameter"; 
      this.checkBox1.UseVisualStyleBackColor = true; 
      // 
      // button3 
      // 
      this.button3.Location = new System.Drawing.Point(13, 104); 
      this.button3.Name = "button3"; 
      this.button3.Size = new System.Drawing.Size(75, 23); 
      this.button3.TabIndex = 4; 
      this.button3.Text = "reset"; 
      this.button3.UseVisualStyleBackColor = true; 
      this.button3.Click += new System.EventHandler(this.button3_Click); 
      // 
      // Form1 
      // 
      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); 
      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; 
      this.ClientSize = new System.Drawing.Size(676, 264); 
      this.Controls.Add(this.button3); 
      this.Controls.Add(this.checkBox1); 
      this.Controls.Add(this.button2); 
      this.Controls.Add(this.button1); 
      this.Controls.Add(this.textBox1); 
      this.Name = "Form1"; 
      this.Text = "Form1"; 
      this.ResumeLayout(false); 
      this.PerformLayout(); 

     } 

     #endregion 

     private System.Windows.Forms.TextBox textBox1; 
     private System.Windows.Forms.Button button1; 
     private System.Windows.Forms.Button button2; 
     private System.Windows.Forms.CheckBox checkBox1; 
     private System.Windows.Forms.Button button3; 
    } 
}