C# 实现软件授权码的功能

对于一个商业软件来说，授权码这个功能必不可少。我这里采用CPU序列号加硬盘标识来判断是否授权。完整代码如下：

using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Management;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;namespace KeyManager
{public partial class FrmShouQuan : Form{public FrmShouQuan(){InitializeComponent();}/// <summary>/// 获取CPU的参数/// </summary>/// <returns></returns>public string getCpu(){string strCpu = null;ManagementClass myCpu = new ManagementClass("win32_Processor");ManagementObjectCollection myCpuConnection = myCpu.GetInstances();foreach (ManagementObject myObject in myCpuConnection){strCpu = myObject.Properties["Processorid"].Value.ToString();break;}return strCpu;}/// <summary>/// 获取硬盘的参数/// </summary>/// <returns></returns>public string GetDiskVolumeSerialNumber(){ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");ManagementObject disk = new ManagementObject("win32_logicaldisk.deviceid=\"c:\"");disk.Get();return disk.GetPropertyValue("VolumeSerialNumber").ToString();}/// <summary>/// 生成机器码，就是CPU参数加上硬盘参数/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button1_Click(object sender, EventArgs e){txtMachineInfo.Text = getCpu() + GetDiskVolumeSerialNumber();//获得24位Cpu和硬盘序列号}public int[] intCode = new int[127];//用于存密钥public void setIntCode(){for (int i = 1; i < intCode.Length; i++){intCode[i] = i % 10;}}public int[] intNumber = new int[25];//用于存机器码的Ascii值public char[] Charcode = new char[25];//存储机器码字//生成注册码private void button2_Click(object sender, EventArgs e){if (txtMachineInfo.Text != ""){txtRegistText.Text = GetResistText(txtMachineInfo.Text);}else{ MessageBox.Show("请选生成机器码", "注册提示"); }}/// <summary>/// 根据机器码获取注册码/// </summary>/// <param name="machineText"></param>/// <returns></returns>private string GetResistText(string machineText){//把机器码存入数组中setIntCode();//初始化127位数组for (int i = 1; i < Charcode.Length; i++)//把机器码存入数组中{Charcode[i] = Convert.ToChar(machineText.Substring(i - 1, 1));}for (int j = 1; j < intNumber.Length; j++)//把字符的ASCII值存入一个整数组中。{intNumber[j] = intCode[Convert.ToInt32(Charcode[j])] + Convert.ToInt32(Charcode[j]);}string strAsciiName = null;//用于存储机器码for (int j = 1; j < intNumber.Length; j++){if (intNumber[j] >= 48 && intNumber[j] <= 57)//判断字符ASCII值是否0－9之间{strAsciiName += Convert.ToChar(intNumber[j]).ToString();}else if (intNumber[j] >= 65 && intNumber[j] <= 90)//判断字符ASCII值是否A－Z之间{strAsciiName += Convert.ToChar(intNumber[j]).ToString();}else if (intNumber[j] >= 97 && intNumber[j] <= 122)//判断字符ASCII值是否a－z之间{strAsciiName += Convert.ToChar(intNumber[j]).ToString();}else//判断字符ASCII值不在以上范围内{if (intNumber[j] > 122)//判断字符ASCII值是否大于z{ strAsciiName += Convert.ToChar(intNumber[j] - 10).ToString(); }else{strAsciiName += Convert.ToChar(intNumber[j] - 9).ToString();}}}return strAsciiName;}private void btnRegist_Click(object sender, EventArgs e){if (txtRegistText.Text != ""){if (textBox1.Text.TrimEnd().Equals(txtRegistText.Text.TrimEnd())){//这里需要将机器码和注册码保存到数据库或注册表中，以便以后校验（推荐保存到数据库中，这样不怕重装系统）MessageBox.Show("注册成功");}else{MessageBox.Show("注册码输入错误");}}else { MessageBox.Show("请生成注册码", "注册提示"); }}/// <summary>/// 验证是否已经激活软件/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button4_Click(object sender, EventArgs e){//这里重新生成机器码和注册码，与数据库中进行对比。只要有一个参数不一致，就是未激活（此处省略两万行代码）}}
}

设计文件的代码：

namespace KeyManager
{partial class FrmShouQuan{/// <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.button3 = new System.Windows.Forms.Button();this.txtRegistText = new System.Windows.Forms.TextBox();this.txtMachineInfo = new System.Windows.Forms.TextBox();this.button4 = new System.Windows.Forms.Button();this.label1 = new System.Windows.Forms.Label();this.label2 = new System.Windows.Forms.Label();this.label3 = new System.Windows.Forms.Label();this.textBox2 = new System.Windows.Forms.TextBox();this.label4 = new System.Windows.Forms.Label();this.textBox3 = new System.Windows.Forms.TextBox();this.label5 = new System.Windows.Forms.Label();this.SuspendLayout();// // textBox1// this.textBox1.Location = new System.Drawing.Point(238, 126);this.textBox1.Name = "textBox1";this.textBox1.Size = new System.Drawing.Size(278, 25);this.textBox1.TabIndex = 1;// // button1// this.button1.Location = new System.Drawing.Point(72, 272);this.button1.Name = "button1";this.button1.Size = new System.Drawing.Size(114, 32);this.button1.TabIndex = 2;this.button1.Text = "获取硬件信息";this.button1.UseVisualStyleBackColor = true;this.button1.Click += new System.EventHandler(this.button1_Click);// // button2// this.button2.Location = new System.Drawing.Point(228, 272);this.button2.Name = "button2";this.button2.Size = new System.Drawing.Size(98, 32);this.button2.TabIndex = 2;this.button2.Text = "生成注册码";this.button2.UseVisualStyleBackColor = true;this.button2.Click += new System.EventHandler(this.button2_Click);// // button3// this.button3.Location = new System.Drawing.Point(368, 272);this.button3.Name = "button3";this.button3.Size = new System.Drawing.Size(75, 32);this.button3.TabIndex = 2;this.button3.Text = "注册";this.button3.UseVisualStyleBackColor = true;this.button3.Click += new System.EventHandler(this.btnRegist_Click);// // txtRegistText// this.txtRegistText.Location = new System.Drawing.Point(238, 89);this.txtRegistText.Name = "txtRegistText";this.txtRegistText.Size = new System.Drawing.Size(278, 25);this.txtRegistText.TabIndex = 1;// // txtMachineInfo// this.txtMachineInfo.Location = new System.Drawing.Point(238, 52);this.txtMachineInfo.Name = "txtMachineInfo";this.txtMachineInfo.Size = new System.Drawing.Size(278, 25);this.txtMachineInfo.TabIndex = 1;// // button4// this.button4.Location = new System.Drawing.Point(485, 272);this.button4.Name = "button4";this.button4.Size = new System.Drawing.Size(118, 32);this.button4.TabIndex = 2;this.button4.Text = "检查是否注册";this.button4.UseVisualStyleBackColor = true;this.button4.Click += new System.EventHandler(this.button4_Click);// // label1// this.label1.AutoSize = true;this.label1.Location = new System.Drawing.Point(159, 52);this.label1.Name = "label1";this.label1.Size = new System.Drawing.Size(67, 15);this.label1.TabIndex = 3;this.label1.Text = "机器码：";// // label2// this.label2.AutoSize = true;this.label2.Location = new System.Drawing.Point(159, 90);this.label2.Name = "label2";this.label2.Size = new System.Drawing.Size(67, 15);this.label2.TabIndex = 3;this.label2.Text = "授权码：";// // label3// this.label3.AutoSize = true;this.label3.Location = new System.Drawing.Point(114, 128);this.label3.Name = "label3";this.label3.Size = new System.Drawing.Size(112, 15);this.label3.TabIndex = 3;this.label3.Text = "请输入授权码：";// // textBox2// this.textBox2.Location = new System.Drawing.Point(238, 163);this.textBox2.Name = "textBox2";this.textBox2.Size = new System.Drawing.Size(278, 25);this.textBox2.TabIndex = 1;this.textBox2.Visible = false;// // label4// this.label4.AutoSize = true;this.label4.Location = new System.Drawing.Point(99, 166);this.label4.Name = "label4";this.label4.Size = new System.Drawing.Size(127, 15);this.label4.TabIndex = 3;this.label4.Text = "请输入起始日期：";this.label4.Visible = false;// // textBox3// this.textBox3.Location = new System.Drawing.Point(238, 200);this.textBox3.Name = "textBox3";this.textBox3.Size = new System.Drawing.Size(278, 25);this.textBox3.TabIndex = 1;this.textBox3.Visible = false;// // label5// this.label5.AutoSize = true;this.label5.Location = new System.Drawing.Point(99, 203);this.label5.Name = "label5";this.label5.Size = new System.Drawing.Size(127, 15);this.label5.TabIndex = 3;this.label5.Text = "请输入有效天数：";this.label5.Visible = false;// // FrmShouQuan// this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 15F);this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;this.ClientSize = new System.Drawing.Size(688, 339);this.Controls.Add(this.label5);this.Controls.Add(this.label4);this.Controls.Add(this.label3);this.Controls.Add(this.label2);this.Controls.Add(this.label1);this.Controls.Add(this.button4);this.Controls.Add(this.button3);this.Controls.Add(this.button2);this.Controls.Add(this.button1);this.Controls.Add(this.txtMachineInfo);this.Controls.Add(this.txtRegistText);this.Controls.Add(this.textBox3);this.Controls.Add(this.textBox2);this.Controls.Add(this.textBox1);this.Name = "FrmShouQuan";this.Text = "FrmShouQuan";this.ResumeLayout(false);this.PerformLayout();}#endregionprivate System.Windows.Forms.TextBox textBox1;private System.Windows.Forms.Button button1;private System.Windows.Forms.Button button2;private System.Windows.Forms.Button button3;private System.Windows.Forms.TextBox txtRegistText;private System.Windows.Forms.TextBox txtMachineInfo;private System.Windows.Forms.Button button4;private System.Windows.Forms.Label label1;private System.Windows.Forms.Label label2;private System.Windows.Forms.Label label3;private System.Windows.Forms.TextBox textBox2;private System.Windows.Forms.Label label4;private System.Windows.Forms.TextBox textBox3;private System.Windows.Forms.Label label5;}
}

运行效果：

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