C# 使用QRCoder生成二维码
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简介
最近瞎琢磨的一些小东西，也算是一个比较完整的二维码生成了，上手也很快，可自行扩展。
现在生成二维码有多种方式，我使用的是QRCoder。
第一步 安装Nuget包 QRCoder
也可以通过命令行来引入，看自己的习惯
第二步 创建一个公共类 QRCoderHelper.cs
这个类用来处理二维码的生成，也方便后续的扩展
using QRCoder;
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using static QRCoder.QRCodeGenerator;
namespace QRCoderRWM
{
/// <summary>
/// 二维码公共处理类
/// </summary>
public static class QRCoderHelper
{
///生成二维码
/// </summary>
/// <param name="TextContent">文本信息</param>
/// <param name="level">容错等级</param>
/// <param name="version">版本</param>
/// <param name="pixel">像素点大小</param>
/// <param name="darkColor">数点颜色</param>
/// <param name="lightColor">背景颜色</param>
/// <param name="iconPath">图标路径</param>
/// <param name="iconSize">图标尺寸</param>
/// <param name="iconBorder">图标边框厚度</param>
/// <param name="whiteBorder">二维码白边</param>
/// <returns></returns>
public static Bitmap generateQrCode(string TextContent, string level, int version, int pixel,Color darkColor, Color lightColor, string iconPath, int iconSize, int iconBorder, bool whiteBorder)
{
QRCodeGenerator.ECCLevel eccLevel = (QRCodeGenerator.ECCLevel)(level == "L" ? 0 : level == "M" ? 1 : level == "Q" ? 2 : 3);
QRCoder.QRCodeGenerator codeGenerator = new QRCoder.QRCodeGenerator();
QRCoder.QRCodeData codeData = codeGenerator.CreateQrCode(TextContent, eccLevel, false, false, QRCoder.QRCodeGenerator.EciMode.Utf8, version);
QRCoder.QRCode code = new QRCoder.QRCode(codeData);
if (iconPath == "")
{
Bitmap bmp = code.GetGraphic(pixel, darkColor, lightColor, whiteBorder);
return bmp;
}
Bitmap icon = new Bitmap(iconPath);
Bitmap iocnbmp = code.GetGraphic(pixel, darkColor, lightColor, icon, iconSize, iconBorder, whiteBorder);
return iocnbmp;
}
}
}
第三步 窗体代码
拖拉组件，以及生成的代码
namespace QRCoderRWM
{
partial class Form2
{
/// <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.pic = new System.Windows.Forms.PictureBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.label4 = new System.Windows.Forms.Label();
this.label5 = new System.Windows.Forms.Label();
this.textcontent = new System.Windows.Forms.TextBox();
this.versionTxt = new System.Windows.Forms.ComboBox();
this.iconsizeCom = new System.Windows.Forms.ComboBox();
this.pixelCom = new System.Windows.Forms.ComboBox();
this.iconborderCom = new System.Windows.Forms.ComboBox();
this.whiteborder = new System.Windows.Forms.RadioButton();
this.whiteborder1 = new System.Windows.Forms.RadioButton();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.levelCom = new System.Windows.Forms.ComboBox();
this.label6 = new System.Windows.Forms.Label();
this.label7 = new System.Windows.Forms.Label();
this.colorDialog1 = new System.Windows.Forms.ColorDialog();
this.darkColorBtn = new System.Windows.Forms.Button();
this.lightColorBtn = new System.Windows.Forms.Button();
this.colorDialog2 = new System.Windows.Forms.ColorDialog();
this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
this.button3 = new System.Windows.Forms.Button();
this.folderBrowserDialog1 = new System.Windows.Forms.FolderBrowserDialog();
((System.ComponentModel.ISupportInitialize)(this.pic)).BeginInit();
this.SuspendLayout();
//
// pic
//
this.pic.Location = new System.Drawing.Point(59, 39);
this.pic.Name = "pic";
this.pic.Size = new System.Drawing.Size(590, 400);
this.pic.TabIndex = 0;
this.pic.TabStop = false;
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(20, 445);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(54, 20);
this.label1.TabIndex = 1;
this.label1.Text = "版本：";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(20, 502);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(84, 20);
this.label2.TabIndex = 2;
this.label2.Text = "图片尺寸：";
//
// label3
//
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(20, 613);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(54, 20);
this.label3.TabIndex = 3;
this.label3.Text = "白边：";
//
// label4
//
this.label4.AutoSize = true;
this.label4.Location = new System.Drawing.Point(363, 445);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(54, 20);
this.label4.TabIndex = 4;
this.label4.Text = "像素：";
//
// label5
//
this.label5.AutoSize = true;
this.label5.Location = new System.Drawing.Point(363, 502);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(84, 20);
this.label5.TabIndex = 5;
this.label5.Text = "图片边线：";
//
// textcontent
//
this.textcontent.Location = new System.Drawing.Point(20, 671);
this.textcontent.Multiline = true;
this.textcontent.Name = "textcontent";
this.textcontent.Size = new System.Drawing.Size(600, 135);
this.textcontent.TabIndex = 6;
this.textcontent.Text = "初秋";
//
// versionTxt
//
this.versionTxt.FormattingEnabled = true;
this.versionTxt.Items.AddRange(new object[] {
"-1",
"0",
"1",
"2",
"3",
"4",
"5"});
this.versionTxt.Location = new System.Drawing.Point(109, 445);
this.versionTxt.Name = "versionTxt";
this.versionTxt.Size = new System.Drawing.Size(151, 28);
this.versionTxt.TabIndex = 7;
//
// iconsizeCom
//
this.iconsizeCom.FormattingEnabled = true;
this.iconsizeCom.Items.AddRange(new object[] {
"5",
"10",
"15",
"20",
"25",
"30"});
this.iconsizeCom.Location = new System.Drawing.Point(110, 502);
this.iconsizeCom.Name = "iconsizeCom";
this.iconsizeCom.Size = new System.Drawing.Size(151, 28);
this.iconsizeCom.TabIndex = 8;
//
// pixelCom
//
this.pixelCom.FormattingEnabled = true;
this.pixelCom.Items.AddRange(new object[] {
"10",
"20",
"30",
"40",
"50",
"60"});
this.pixelCom.Location = new System.Drawing.Point(469, 445);
this.pixelCom.Name = "pixelCom";
this.pixelCom.Size = new System.Drawing.Size(151, 28);
this.pixelCom.TabIndex = 9;
//
// iconborderCom
//
this.iconborderCom.FormattingEnabled = true;
this.iconborderCom.Items.AddRange(new object[] {
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9"});
this.iconborderCom.Location = new System.Drawing.Point(469, 502);
this.iconborderCom.Name = "iconborderCom";
this.iconborderCom.Size = new System.Drawing.Size(151, 28);
this.iconborderCom.TabIndex = 10;
//
// whiteborder
//
this.whiteborder.AutoSize = true;
this.whiteborder.Location = new System.Drawing.Point(109, 613);
this.whiteborder.Name = "whiteborder";
this.whiteborder.Size = new System.Drawing.Size(45, 24);
this.whiteborder.TabIndex = 11;
this.whiteborder.TabStop = true;
this.whiteborder.Text = "有";
this.whiteborder.UseVisualStyleBackColor = true;
//
// whiteborder1
//
this.whiteborder1.AutoSize = true;
this.whiteborder1.Location = new System.Drawing.Point(215, 613);
this.whiteborder1.Name = "whiteborder1";
this.whiteborder1.Size = new System.Drawing.Size(45, 24);
this.whiteborder1.TabIndex = 12;
this.whiteborder1.TabStop = true;
this.whiteborder1.Text = "无";
this.whiteborder1.UseVisualStyleBackColor = true;
//
// button1
//
this.button1.Location = new System.Drawing.Point(76, 836);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(94, 29);
this.button1.TabIndex = 13;
this.button1.Text = "生成";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(415, 836);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(94, 29);
this.button2.TabIndex = 14;
this.button2.Text = "保存";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// levelCom
//
this.levelCom.FormattingEnabled = true;
this.levelCom.Items.AddRange(new object[] {
"L",
"Q",
"H",
"M"});
this.levelCom.Location = new System.Drawing.Point(109, 554);
this.levelCom.Name = "levelCom";
this.levelCom.Size = new System.Drawing.Size(151, 28);
this.levelCom.TabIndex = 15;
//
// label6
//
this.label6.AutoSize = true;
this.label6.Location = new System.Drawing.Point(20, 557);
this.label6.Name = "label6";
this.label6.Size = new System.Drawing.Size(84, 20);
this.label6.TabIndex = 16;
this.label6.Text = "容错等级：";
//
// label7
//
this.label7.AutoSize = true;
this.label7.Location = new System.Drawing.Point(363, 565);
this.label7.Name = "label7";
this.label7.Size = new System.Drawing.Size(0, 20);
this.label7.TabIndex = 17;
//
// darkColorBtn
//
this.darkColorBtn.Location = new System.Drawing.Point(369, 561);
this.darkColorBtn.Name = "darkColorBtn";
this.darkColorBtn.Size = new System.Drawing.Size(94, 29);
this.darkColorBtn.TabIndex = 21;
this.darkColorBtn.Text = "二维码颜色";
this.darkColorBtn.UseVisualStyleBackColor = true;
this.darkColorBtn.Click += new System.EventHandler(this.darkColorBtn_Click);
//
// lightColorBtn
//
this.lightColorBtn.Location = new System.Drawing.Point(526, 561);
this.lightColorBtn.Name = "lightColorBtn";
this.lightColorBtn.Size = new System.Drawing.Size(94, 29);
this.lightColorBtn.TabIndex = 22;
this.lightColorBtn.Text = "二维码底色";
this.lightColorBtn.UseVisualStyleBackColor = true;
this.lightColorBtn.Click += new System.EventHandler(this.lightColorBtn_Click);
//
// openFileDialog1
//
this.openFileDialog1.FileName = "openFileDialog1";
//
// button3
//
this.button3.Location = new System.Drawing.Point(369, 613);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(94, 29);
this.button3.TabIndex = 23;
this.button3.Text = "自定义图片";
this.button3.UseVisualStyleBackColor = true;
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// Form2
//
this.AutoScaleDimensions = new System.Drawing.SizeF(9F, 20F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.CausesValidation = false;
this.ClientSize = new System.Drawing.Size(673, 881);
this.Controls.Add(this.button3);
this.Controls.Add(this.lightColorBtn);
this.Controls.Add(this.darkColorBtn);
this.Controls.Add(this.label7);
this.Controls.Add(this.label6);
this.Controls.Add(this.levelCom);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.whiteborder1);
this.Controls.Add(this.whiteborder);
this.Controls.Add(this.iconborderCom);
this.Controls.Add(this.pixelCom);
this.Controls.Add(this.iconsizeCom);
this.Controls.Add(this.versionTxt);
this.Controls.Add(this.textcontent);
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.pic);
this.Name = "Form2";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "Form2";
this.Load += new System.EventHandler(this.Form2_Load);
((System.ComponentModel.ISupportInitialize)(this.pic)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private PictureBox pic;
private Label label1;
private Label label2;
private Label label3;
private Label label4;
private Label label5;
private TextBox textcontent;
private ComboBox versionTxt;
private ComboBox iconsizeCom;
private ComboBox pixelCom;
private ComboBox iconborderCom;
private RadioButton whiteborder;
private RadioButton whiteborder1;
private Button button1;
private Button button2;
private ComboBox levelCom;
private Label label6;
private Label label7;
private ColorDialog colorDialog1;
private Button darkColorBtn;
private Button lightColorBtn;
private ColorDialog colorDialog2;
private OpenFileDialog openFileDialog1;
private Button button3;
private FolderBrowserDialog folderBrowserDialog1;
}
}
第四步 实现方式
处理生成的数据，传给公共类 QRCoderHelper.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using static QRCoder.QRCodeGenerator;
using static System.Windows.Forms.VisualStyles.VisualStyleElement;
namespace QRCoderRWM
{
public partial class Form2 : Form
{
//二维码颜色
private static Color darkColor =Color.Black;
//背景颜色
private static Color lightColor = Color.White;
//Logo地址
private static string path ="";
public Form2()
{
InitializeComponent();
}
private void Form2_Load(object sender, EventArgs e)
{
//版本
versionTxt.SelectedIndex = 0;
//像素大小
pixelCom.SelectedIndex = 0;
//图片大小
iconsizeCom.SelectedIndex = 0;
//图片边框
iconborderCom.SelectedIndex = 0;
//容错等级
levelCom.SelectedIndex = 0;
}
private void button1_Click(object sender, EventArgs e)
{
//版本
int version = Convert.ToInt16(versionTxt.Text);
//像素大小
int pixel = Convert.ToInt16(pixelCom.Text);
//二维码内容
string msg = textcontent.Text;
//图片大小
int iconSize = Convert.ToInt16(iconsizeCom.Text);
//图片边框
int iconBorder = Convert.ToInt16(iconborderCom.Text);
//二维码空白边框
bool Iswhiteborder = whiteborder.Checked ? true : false;
//容错等级
string level = levelCom.Text;
Bitmap bitmap = QRCoderHelper.generateQrCode(msg, level, version, pixel, darkColor, lightColor, path, iconSize, iconBorder, Iswhiteborder);
pic.Image = bitmap;
}
private void button2_Click(object sender, EventArgs e)
{
if (pic.Image != null)
using (SaveFileDialog sfd = new SaveFileDialog())
{
sfd.Filter = "(*.png)|*.png|(*.bmp)|*.bmp";
if (sfd.ShowDialog() == DialogResult.OK) pic.Image.Save(sfd.FileName);
}
}
private void darkColorBtn_Click(object sender, EventArgs e)
{
//显示颜色对话框
DialogResult dr = colorDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
darkColor = colorDialog1.Color;
}
}
private void lightColorBtn_Click(object sender, EventArgs e)
{
//显示颜色对话框
DialogResult dr = colorDialog2.ShowDialog();
if (dr == DialogResult.OK)
{
lightColor = colorDialog2.Color;
}
}
private void button3_Click(object sender, EventArgs e)
{
var dr = new OpenFileDialog();
//f.Multiselect = true; //多选
if (dr.ShowDialog() == DialogResult.OK)
{
path = dr.FileName;
String filename = dr.SafeFileName;
}
//选择文件夹
//FolderBrowserDialog dr = new FolderBrowserDialog();
//if (dr.ShowDialog() == DialogResult.OK)
//{
// String DirPath = dr.SelectedPath;
//}
}
}
}
