使用GDI画图片生成合成图片并调用打印机进行图片打印
新建窗体应用程序PrinterDemo，将默认的Form1重命名为FormPrinter，添加对
Newtonsoft.Json.dll用于读写Json字符串
zxing.dll，zxing.presentation.dll用于生成条形码，二维码
三个类库的引用。
一、新建打印配置类PrintConfig：
PrintConfig.cs源程序为：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace PrinterDemo
{
/// <summary>
/// 打印某一个矩形Rectangle的配置，所有文本，图片，条码都认为是一个矩形区域，由(x,y,width,height)组成
/// </summary>
public class PrintConfig
{
/// <summary>
/// 打印的具体内容，条形码，二维码对应的字符串内容
/// </summary>
public string PrintMessage { get; set; }
/// <summary>
/// 打印的左上角X坐标，以像素为单位
/// </summary>
public int X { set; get; }
/// <summary>
/// 打印的左上角Y坐标，以像素为单位
/// </summary>
public int Y { set; get; }
/// <summary>
/// 宽度，以像素为单位
/// </summary>
public int Width { set; get; }
/// <summary>
/// 高度，以像素为单位
/// </summary>
public int Height { set; get; }
/// <summary>
/// 打印模式枚举：条形码，二维码，纯文本，图片【显示枚举类型为字符串，而不是整数】
/// </summary>
[Newtonsoft.Json.JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]
public PrintMode PrintMode { set; get; }
/// <summary>
/// 字体大小
/// </summary>
public float FontSize { set; get; }
/// <summary>
/// 图片路径，当打印模式为图片PrintMode.Image时有效，其他默认为空
/// </summary>
public string ImagePath { get; set; }
}
/// <summary>
/// 打印模式枚举
/// </summary>
[Flags]
public enum PrintMode
{
/// <summary>
/// 条形码Code128
/// </summary>
Code128 = 1,
/// <summary>
/// 二维码QRCode
/// </summary>
QRCode = 2,
/// <summary>
/// 纯文本
/// </summary>
Text = 4,
/// <summary>
/// 图片
/// </summary>
Image = 8
}
}
二、新建打印配置读写类CommonUtil
CommonUtil.cs源程序如下：
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace PrinterDemo
{
public class CommonUtil
{
/// <summary>
/// 打印配置json文件路径
/// </summary>
private static string configJsonPath = AppDomain.CurrentDomain.BaseDirectory + "printConfig.json";
/// <summary>
/// 读取打印配置
/// </summary>
/// <returns></returns>
public static List<PrintConfig> ReadPrintConfig()
{
List<PrintConfig> printConfigList = new List<PrintConfig>();
if (!File.Exists(configJsonPath))
{
return printConfigList;
}
string contents = File.ReadAllText(configJsonPath, Encoding.UTF8);
printConfigList = Newtonsoft.Json.JsonConvert.DeserializeObject<List<PrintConfig>>(contents);
return printConfigList;
}
/// <summary>
/// 保存打印配置
/// </summary>
/// <param name="printConfigList"></param>
/// <returns></returns>
public static void SavePrintConfig(List<PrintConfig> printConfigList)
{
string contents = Newtonsoft.Json.JsonConvert.SerializeObject(printConfigList, Newtonsoft.Json.Formatting.Indented);
File.WriteAllText(configJsonPath, contents, Encoding.UTF8);
}
}
}
三、对应的配置json文件 printConfig.json
printConfig.json的测试内容是：
[
{
"PrintMessage": "Snake123456789ABCDEF",
"X": 10,
"Y": 10,
"Width": 320,
"Height": 80,
"PrintMode": "Code128",
"FontSize": 16.0,
"ImagePath": ""
},
{
"PrintMessage": "Snake123456789ABCDEF",
"X": 80,
"Y": 120,
"Width": 180,
"Height": 180,
"PrintMode": "QRCode",
"FontSize": 15.0,
"ImagePath": ""
},
{
"PrintMessage": "打印图片",
"X": 370,
"Y": 80,
"Width": 120,
"Height": 120,
"PrintMode": "Image",
"FontSize": 12.0,
"ImagePath": "images\\test.png"
},
{
"PrintMessage": "这是测试纯文本ABC8,需要在Paint事件中显示文字",
"X": 10,
"Y": 320,
"Width": 400,
"Height": 30,
"PrintMode": "Text",
"FontSize": 13.0,
"ImagePath": ""
}
]四、新建关键类文件PrinterUtil，用于合成图片【文本，条形码均为图片】
PrinterUtil.cs源程序如下：
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Printing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ZXing;
using ZXing.QrCode;
namespace PrinterDemo
{
/// <summary>
/// 调用打印机打印图片和文字
/// </summary>
public class PrinterUtil
{
/// <summary>
/// 使用打印机打印由文本、二维码等合成的图片
/// 自动生成图片后打印
/// 斯内科 20240206
/// </summary>
/// <param name="printConfigList">打印设置列表</param>
/// <param name="printerName">打印机名称</param>
/// <returns></returns>
public static bool PrintCompositePicture(List<PrintConfig> printConfigList, string printerName)
{
try
{
Bitmap printImg = GeneratePrintImage(printConfigList);
return PrintImage(printerName, printImg);
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show($"打印异常：{ex.Message}", "出错");
return false;
}
}
/// <summary>
/// 生成需要打印的条码和文本等组合的图片
/// </summary>
/// <param name="listPrintset"></param>
/// <returns></returns>
public static Bitmap GeneratePrintImage(List<PrintConfig> printConfigList)
{
List<Bitmap> listbitmap = new List<Bitmap>();
//合并图像
for (int i = 0; i < printConfigList.Count; i++)
{
Bitmap bitmap = new Bitmap(10, 10);
switch (printConfigList[i].PrintMode)
{
case PrintMode.Code128:
bitmap = GenerateBarcodeImage(printConfigList[i].PrintMessage, printConfigList[i].Width, printConfigList[i].Height, BarcodeFormat.CODE_128, 1);
break;
case PrintMode.QRCode:
bitmap = GenerateBarcodeImage(printConfigList[i].PrintMessage, printConfigList[i].Width, printConfigList[i].Height, BarcodeFormat.QR_CODE, 1);
break;
case PrintMode.Text:
bitmap = GenerateStringImage(printConfigList[i].PrintMessage, printConfigList[i].Width, printConfigList[i].Height, printConfigList[i].X, printConfigList[i].Y, printConfigList[i].FontSize);
break;
case PrintMode.Image:
bitmap = (Bitmap)Image.FromFile(AppDomain.CurrentDomain.BaseDirectory + printConfigList[i].ImagePath);
break;
}
listbitmap.Add(bitmap);
}
//创建要显示的图片对象,根据参数的个数设置宽度
Bitmap backgroudImg = new Bitmap(600, 400);
Graphics g = Graphics.FromImage(backgroudImg);
//清除画布,背景设置为白色
g.Clear(System.Drawing.Color.White);
//设置为 抗锯齿
g.SmoothingMode = SmoothingMode.AntiAlias;
g.SmoothingMode = SmoothingMode.HighQuality;
g.CompositingQuality = CompositingQuality.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
for (int i = 0; i < printConfigList.Count; i++)
{
g.DrawImage(listbitmap[i], printConfigList[i].X, printConfigList[i].Y, listbitmap[i].Width, listbitmap[i].Height);
}
return backgroudImg;
}
/// <summary>
/// 生成条码图片【barcodeFormat一维条形码，二维码】
/// </summary>
/// <param name="codeContent">打印条码对应的字符串</param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="barcodeFormat">条码格式：CODE_128代表一维条码，QR_CODE代表二维码</param>
/// <param name="margin"></param>
/// <returns></returns>
public static Bitmap GenerateBarcodeImage(string codeContent, int width, int height, BarcodeFormat barcodeFormat, int margin = 1)
{
// 1.设置QR二维码的规格
QrCodeEncodingOptions qrEncodeOption = new QrCodeEncodingOptions();
qrEncodeOption.DisableECI = true;
qrEncodeOption.CharacterSet = "UTF-8"; // 设置编码格式，否则读取'中文'乱码
qrEncodeOption.Height = height;
qrEncodeOption.Width = width;
qrEncodeOption.Margin = margin; // 设置周围空白边距
qrEncodeOption.PureBarcode = true;
// 2.生成条形码图片
BarcodeWriter wr = new BarcodeWriter();
wr.Format = barcodeFormat; // 二维码 BarcodeFormat.QR_CODE
wr.Options = qrEncodeOption;
Bitmap img = wr.Write(codeContent);
return img;
}
/// <summary>
/// 生成字符串图片
/// </summary>
/// <param name="codeContent"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="emSize"></param>
/// <returns></returns>
public static Bitmap GenerateStringImage(string codeContent, int width, int height, int x, int y, float emSize = 9f)
{
Bitmap imageTxt = new Bitmap(width, height);
Graphics graphics = Graphics.FromImage(imageTxt);
Font font = new Font("黑体", emSize, FontStyle.Regular);
Rectangle destRect = new Rectangle(x, y, width, height);
LinearGradientBrush brush = new LinearGradientBrush(destRect, Color.Black, Color.Black, 0, true);
RectangleF rectangleF = new RectangleF(x, y, width, height);
graphics.DrawString(codeContent, font, brush, rectangleF);
return imageTxt;
}
/// <summary>
/// 调用打印机 打印条码和文本 图片
/// </summary>
/// <param name="printerName">打印机名称</param>
/// <param name="image"></param>
/// <returns></returns>
private static bool PrintImage(string printerName, Bitmap image)
{
if (image != null)
{
PrintDocument pd = new PrintDocument();
//打印事件设置
pd.PrintPage += new PrintPageEventHandler((w, e) =>
{
int x = 0;
int y = 5;
int width = image.Width;
int height = image.Height;
Rectangle destRect = new Rectangle(x, y, width + 200, height + 200);
e.Graphics.DrawImage(image, destRect, 2, 2, image.Width, image.Height, System.Drawing.GraphicsUnit.Millimeter);
});
PrinterSettings printerSettings = new PrinterSettings
{
PrinterName = printerName
};
pd.PrinterSettings = printerSettings;
pd.PrintController = new StandardPrintController();//隐藏打印时屏幕左上角会弹出的指示窗
try
{
//设置纸张高度和大小
int w = 800;//(int)(PaperWidth * 40);原600，300
int h = 200;//(int)(PaperHeight * 40);20
pd.DefaultPageSettings.PaperSize = new PaperSize("custom", w, h);
pd.Print();
return true;
}
catch (Exception ex)
{
pd.PrintController.OnEndPrint(pd, new PrintEventArgs());
System.Windows.Forms.MessageBox.Show($"【PrintImage】打印出错：{ex.Message}", "使用打印机打印");
return false;
}
}
else
{
return false;
}
}
}
}
五、新建打印内容配置窗体FormPrintSetting
窗体设计器源程序如下：
FormPrintSetting.Designer.cs文件
namespace PrinterDemo
{
partial class FormPrintSetting
{
/// <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.btnSave = new System.Windows.Forms.Button();
this.dgvConfig = new System.Windows.Forms.DataGridView();
this.btnRead = new System.Windows.Forms.Button();
this.dgvcPrintMessage = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.dgvcX = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.dgvcY = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.dgvcWidth = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.dgvcHeight = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.dgvcPrintMode = new System.Windows.Forms.DataGridViewComboBoxColumn();
this.dgvcFontSize = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.dgvcImagePath = new System.Windows.Forms.DataGridViewTextBoxColumn();
((System.ComponentModel.ISupportInitialize)(this.dgvConfig)).BeginInit();
this.SuspendLayout();
//
// btnSave
//
this.btnSave.Font = new System.Drawing.Font("宋体", 16F);
this.btnSave.Location = new System.Drawing.Point(238, 3);
this.btnSave.Name = "btnSave";
this.btnSave.Size = new System.Drawing.Size(113, 32);
this.btnSave.TabIndex = 0;
this.btnSave.Text = "保存配置";
this.btnSave.UseVisualStyleBackColor = true;
this.btnSave.Click += new System.EventHandler(this.btnSave_Click);
//
// dgvConfig
//
this.dgvConfig.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dgvConfig.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
this.dgvcPrintMessage,
this.dgvcX,
this.dgvcY,
this.dgvcWidth,
this.dgvcHeight,
this.dgvcPrintMode,
this.dgvcFontSize,
this.dgvcImagePath});
this.dgvConfig.Location = new System.Drawing.Point(3, 41);
this.dgvConfig.Name = "dgvConfig";
this.dgvConfig.RowTemplate.Height = 23;
this.dgvConfig.Size = new System.Drawing.Size(1085, 397);
this.dgvConfig.TabIndex = 1;
this.dgvConfig.DataError += new System.Windows.Forms.DataGridViewDataErrorEventHandler(this.dgvConfig_DataError);
//
// btnRead
//
this.btnRead.Font = new System.Drawing.Font("宋体", 16F);
this.btnRead.Location = new System.Drawing.Point(93, 3);
this.btnRead.Name = "btnRead";
this.btnRead.Size = new System.Drawing.Size(113, 32);
this.btnRead.TabIndex = 2;
this.btnRead.Text = "刷新配置";
this.btnRead.UseVisualStyleBackColor = true;
this.btnRead.Click += new System.EventHandler(this.btnRead_Click);
//
// dgvcPrintMessage
//
this.dgvcPrintMessage.HeaderText = "打印内容";
this.dgvcPrintMessage.Name = "dgvcPrintMessage";
this.dgvcPrintMessage.Width = 180;
//
// dgvcX
//
this.dgvcX.HeaderText = "X坐标";
this.dgvcX.Name = "dgvcX";
this.dgvcX.Width = 120;
//
// dgvcY
//
this.dgvcY.HeaderText = "Y坐标";
this.dgvcY.Name = "dgvcY";
this.dgvcY.Width = 120;
//
// dgvcWidth
//
this.dgvcWidth.HeaderText = "宽度";
this.dgvcWidth.Name = "dgvcWidth";
this.dgvcWidth.Width = 120;
//
// dgvcHeight
//
this.dgvcHeight.HeaderText = "高度";
this.dgvcHeight.Name = "dgvcHeight";
this.dgvcHeight.Width = 120;
//
// dgvcPrintMode
//
this.dgvcPrintMode.HeaderText = "打印模式枚举";
this.dgvcPrintMode.Items.AddRange(new object[] {
"Code128",
"QRCode",
"Text",
"Image"});
this.dgvcPrintMode.Name = "dgvcPrintMode";
//
// dgvcFontSize
//
this.dgvcFontSize.HeaderText = "字体大小";
this.dgvcFontSize.Name = "dgvcFontSize";
//
// dgvcImagePath
//
this.dgvcImagePath.HeaderText = "图片路径";
this.dgvcImagePath.Name = "dgvcImagePath";
this.dgvcImagePath.Width = 180;
//
// FormPrintSetting
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(1093, 450);
this.Controls.Add(this.btnRead);
this.Controls.Add(this.dgvConfig);
this.Controls.Add(this.btnSave);
this.Name = "FormPrintSetting";
this.Text = "打印内容配置";
this.Load += new System.EventHandler(this.FormPrintSetting_Load);
((System.ComponentModel.ISupportInitialize)(this.dgvConfig)).EndInit();
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.Button btnSave;
private System.Windows.Forms.DataGridView dgvConfig;
private System.Windows.Forms.Button btnRead;
private System.Windows.Forms.DataGridViewTextBoxColumn dgvcPrintMessage;
private System.Windows.Forms.DataGridViewTextBoxColumn dgvcX;
private System.Windows.Forms.DataGridViewTextBoxColumn dgvcY;
private System.Windows.Forms.DataGridViewTextBoxColumn dgvcWidth;
private System.Windows.Forms.DataGridViewTextBoxColumn dgvcHeight;
private System.Windows.Forms.DataGridViewComboBoxColumn dgvcPrintMode;
private System.Windows.Forms.DataGridViewTextBoxColumn dgvcFontSize;
private System.Windows.Forms.DataGridViewTextBoxColumn dgvcImagePath;
}
}FormPrintSetting.cs文件
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;
namespace PrinterDemo
{
public partial class FormPrintSetting : Form
{
public FormPrintSetting()
{
InitializeComponent();
}
private void FormPrintSetting_Load(object sender, EventArgs e)
{
btnRead_Click(null, null);
}
private void btnRead_Click(object sender, EventArgs e)
{
dgvConfig.Rows.Clear();
List<PrintConfig> printConfigList = CommonUtil.ReadPrintConfig();
for (int i = 0; i < printConfigList.Count; i++)
{
dgvConfig.Rows.Add(printConfigList[i].PrintMessage, printConfigList[i].X, printConfigList[i].Y, printConfigList[i].Width, printConfigList[i].Height,
printConfigList[i].PrintMode.ToString(), printConfigList[i].FontSize, printConfigList[i].ImagePath);
}
}
/// <summary>
/// 检查输入的配置信息
/// </summary>
/// <returns></returns>
private bool CheckInput()
{
int validCount = 0;
for (int i = 0; i < dgvConfig.Rows.Count; i++)
{
string strPrintMessage = Convert.ToString(dgvConfig["dgvcPrintMessage", i].Value);
string strX = Convert.ToString(dgvConfig["dgvcX", i].Value);
string strY = Convert.ToString(dgvConfig["dgvcY", i].Value);
string strWidth = Convert.ToString(dgvConfig["dgvcWidth", i].Value);
string strHeight = Convert.ToString(dgvConfig["dgvcHeight", i].Value);
string strPrintMode = Convert.ToString(dgvConfig["dgvcPrintMode", i].Value);
string strFontSize = Convert.ToString(dgvConfig["dgvcFontSize", i].Value);
string strImagePath = Convert.ToString(dgvConfig["dgvcImagePath", i].Value);
if (string.IsNullOrWhiteSpace(strPrintMessage))
{
continue;
}
int X;
int Y;
int Width;
int Height;
float FontSize;
if (!int.TryParse(strX, out X))
{
dgvConfig["dgvcX", i].Selected = true;
MessageBox.Show("X坐标必须为整数", "出错");
return false;
}
if (!int.TryParse(strY, out Y))
{
dgvConfig["dgvcY", i].Selected = true;
MessageBox.Show("Y坐标必须为整数", "出错");
return false;
}
if (!int.TryParse(strWidth, out Width) || Width < 0)
{
dgvConfig["dgvcWidth", i].Selected = true;
MessageBox.Show("宽度必须为正整数", "出错");
return false;
}
if (!int.TryParse(strHeight, out Height) || Height < 0)
{
dgvConfig["dgvcHeight", i].Selected = true;
MessageBox.Show("高度必须为正整数", "出错");
return false;
}
if (!float.TryParse(strFontSize, out FontSize) || FontSize < 0)
{
dgvConfig["dgvcFontSize", i].Selected = true;
MessageBox.Show("字体大小必须为正实数", "出错");
return false;
}
if (string.IsNullOrWhiteSpace(strPrintMode))
{
dgvConfig["dgvcPrintMode", i].Selected = true;
MessageBox.Show("请选择打印模式", "出错");
return false;
}
if (Enum.TryParse(strPrintMode, out PrintMode printMode) && printMode == PrintMode.Image && string.IsNullOrWhiteSpace(strImagePath))
{
dgvConfig["dgvcImagePath", i].Selected = true;
MessageBox.Show("已选择打印模式为Image，必须配置图片路径", "出错");
return false;
}
validCount++;
}
if (validCount == 0)
{
MessageBox.Show("没有设置任何打印配置", "出错");
return false;
}
return true;
}
private void btnSave_Click(object sender, EventArgs e)
{
if (!CheckInput())
{
return;
}
List<PrintConfig> printConfigList = new List<PrintConfig>();
for (int i = 0; i < dgvConfig.Rows.Count; i++)
{
string strPrintMessage = Convert.ToString(dgvConfig["dgvcPrintMessage", i].Value);
string strX = Convert.ToString(dgvConfig["dgvcX", i].Value);
string strY = Convert.ToString(dgvConfig["dgvcY", i].Value);
string strWidth = Convert.ToString(dgvConfig["dgvcWidth", i].Value);
string strHeight = Convert.ToString(dgvConfig["dgvcHeight", i].Value);
string strPrintMode = Convert.ToString(dgvConfig["dgvcPrintMode", i].Value);
string strFontSize = Convert.ToString(dgvConfig["dgvcFontSize", i].Value);
string strImagePath = Convert.ToString(dgvConfig["dgvcImagePath", i].Value);
if (string.IsNullOrWhiteSpace(strPrintMessage))
{
continue;
}
printConfigList.Add(new PrintConfig()
{
PrintMessage = strPrintMessage.Trim(),
X = int.Parse(strX),
Y = int.Parse(strY),
Width = int.Parse(strWidth),
Height = int.Parse(strHeight),
PrintMode = (PrintMode)Enum.Parse(typeof(PrintMode), strPrintMode),
FontSize = float.Parse(strFontSize),
ImagePath = strImagePath.Trim()
});
}
CommonUtil.SavePrintConfig(printConfigList);
//重新刷新
btnRead_Click(null, null);
MessageBox.Show("保存打印配置信息成功", "提示");
}
private void dgvConfig_DataError(object sender, DataGridViewDataErrorEventArgs e)
{
MessageBox.Show($"出错的列索引【{e.ColumnIndex}】,行索引【{ e.RowIndex}】,{e.Exception.Message}");
}
}
}
六、窗体 FormPrinter设计器与源程序如下：
FormPrinter.Designer.cs文件
namespace PrinterDemo
{
partial class FormPrinter
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要修改
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.lblCode = new System.Windows.Forms.Label();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.btnConfig = new System.Windows.Forms.Button();
this.btnManualPrint = new System.Windows.Forms.Button();
this.rtxtMessage = new System.Windows.Forms.RichTextBox();
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
this.SuspendLayout();
//
// lblCode
//
this.lblCode.AutoSize = true;
this.lblCode.Font = new System.Drawing.Font("宋体", 12F);
this.lblCode.Location = new System.Drawing.Point(12, 429);
this.lblCode.Name = "lblCode";
this.lblCode.Size = new System.Drawing.Size(152, 16);
this.lblCode.TabIndex = 27;
this.lblCode.Text = "NG1234567890ABCDEF";
//
// pictureBox1
//
this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.pictureBox1.Location = new System.Drawing.Point(3, 9);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(600, 400);
this.pictureBox1.TabIndex = 26;
this.pictureBox1.TabStop = false;
this.pictureBox1.Paint += new System.Windows.Forms.PaintEventHandler(this.pictureBox1_Paint);
//
// btnConfig
//
this.btnConfig.Font = new System.Drawing.Font("宋体", 16F);
this.btnConfig.Location = new System.Drawing.Point(125, 524);
this.btnConfig.Name = "btnConfig";
this.btnConfig.Size = new System.Drawing.Size(171, 41);
this.btnConfig.TabIndex = 70;
this.btnConfig.Text = "打印模板配置";
this.btnConfig.UseVisualStyleBackColor = true;
this.btnConfig.Click += new System.EventHandler(this.btnConfig_Click);
//
// btnManualPrint
//
this.btnManualPrint.Font = new System.Drawing.Font("宋体", 16F);
this.btnManualPrint.Location = new System.Drawing.Point(95, 460);
this.btnManualPrint.Name = "btnManualPrint";
this.btnManualPrint.Size = new System.Drawing.Size(306, 52);
this.btnManualPrint.TabIndex = 69;
this.btnManualPrint.Text = "根据打印模板配置进行打印";
this.btnManualPrint.UseVisualStyleBackColor = true;
this.btnManualPrint.Click += new System.EventHandler(this.btnManualPrint_Click);
//
// rtxtMessage
//
this.rtxtMessage.Location = new System.Drawing.Point(620, 9);
this.rtxtMessage.Name = "rtxtMessage";
this.rtxtMessage.ReadOnly = true;
this.rtxtMessage.Size = new System.Drawing.Size(553, 559);
this.rtxtMessage.TabIndex = 71;
this.rtxtMessage.Text = "";
//
// FormPrinter
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(1185, 580);
this.Controls.Add(this.rtxtMessage);
this.Controls.Add(this.btnConfig);
this.Controls.Add(this.btnManualPrint);
this.Controls.Add(this.lblCode);
this.Controls.Add(this.pictureBox1);
this.Name = "FormPrinter";
this.Text = "条码打印示教";
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Label lblCode;
private System.Windows.Forms.PictureBox pictureBox1;
private System.Windows.Forms.Button btnConfig;
private System.Windows.Forms.Button btnManualPrint;
private System.Windows.Forms.RichTextBox rtxtMessage;
}
}
FormPrinter.cs文件
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;
namespace PrinterDemo
{
public partial class FormPrinter : Form
{
public FormPrinter()
{
InitializeComponent();
}
FormPrintSetting formPrintSetting;
private void btnConfig_Click(object sender, EventArgs e)
{
if (formPrintSetting == null || formPrintSetting.IsDisposed)
{
formPrintSetting = new FormPrintSetting();
formPrintSetting.Show();
}
else
{
formPrintSetting.Activate();
}
}
/// <summary>
/// 显示推送消息
/// </summary>
/// <param name="msg"></param>
private void DisplayMessage(string msg)
{
this.BeginInvoke(new Action(() =>
{
if (rtxtMessage.TextLength > 20480)
{
rtxtMessage.Clear();
}
rtxtMessage.AppendText($"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")}->{msg}\n");
rtxtMessage.ScrollToCaret();
}));
}
private async void btnManualPrint_Click(object sender, EventArgs e)
{
List<PrintConfig> printConfigList = CommonUtil.ReadPrintConfig();
Task<int> task = Task.Run(() =>
{
pictureBox1.Tag = printConfigList;//为标签Tag赋值，用于PictureBox对文字的显示处理【Paint重绘事件】
DisplayMessage($"即将打印【{printConfigList.Count}】个内容,该内容描述集合为:\n{string.Join(",\n", printConfigList.Select(x => x.PrintMessage))}");
int okCount = 0;
try
{
string printContents = string.Join(",", printConfigList.Select(x => x.PrintMessage));
//开始打印
this.BeginInvoke(new Action(() =>
{
lblCode.Text = printContents;
pictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;
Bitmap bitmap = PrinterUtil.GeneratePrintImage(printConfigList);
pictureBox1.Image = bitmap;
}));
bool rst = PrinterUtil.PrintCompositePicture(printConfigList, printerName: "Zebra 8848T");
DisplayMessage($"条码打印{(rst ? "成功" : "失败")}.打印内容：{printContents}");
if (rst)
{
okCount++;
}
}
catch (Exception ex)
{
DisplayMessage($"条码打印出错，原因：{ex.Message}");
}
return okCount;
});
await task;
DisplayMessage($"条码打印已完成，打印成功条码个数：{task.Result}");
}
/// <summary>
/// 在PictureBox上显示文本，需要在Paint重绘事件中
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
PictureBox pictureBox = sender as PictureBox;
if (pictureBox == null || pictureBox.Tag == null)
{
return;
}
List<PrintConfig> printConfigList = pictureBox.Tag as List<PrintConfig>;
for (int i = 0; printConfigList != null && i < printConfigList.Count; i++)
{
//因PictureBox不能直接显示文本，需要在Paint事件中独自处理文字显示
if (printConfigList[i].PrintMode == PrintMode.Text)
{
Graphics graphics = e.Graphics;
Font font = new Font("黑体", printConfigList[i].FontSize, FontStyle.Regular);
Rectangle destRect = new Rectangle(printConfigList[i].X, printConfigList[i].Y, printConfigList[i].Width, printConfigList[i].Height);
System.Drawing.Drawing2D.LinearGradientBrush brush = new System.Drawing.Drawing2D.LinearGradientBrush(destRect, Color.Black, Color.Black, 0, true);
RectangleF rectangleF = new RectangleF(printConfigList[i].X, printConfigList[i].Y, printConfigList[i].Width, printConfigList[i].Height);
graphics.DrawString(printConfigList[i].PrintMessage, font, brush, rectangleF);
}
}
}
}
}
七、程序运行如图：
打印内容配置
![[Python进阶] 制作动态二维码](https://img-blog.csdnimg.cn/direct/a862182f9466426a885edfacc42cba62.png)
