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使用PrintDocument定制打印格式
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虽然说使在IE上直接调用打印插件打印已经不常用，但是有时候还是会用到，这里就记录一下。
首先我们列出来我们的打印类
public class PrintService
{
//打印机名称
private static readonly string _printerName = "";
//业务名称
private static string _printStr = ""; /// <summary>
/// 打印
/// </summary>
/// <param name="printStr"></param>
/// <returns>0：success；1：未找到打印机；2：fail</returns>
public static int PrintNo(string printStr)
{
try
{
_printStr = printStr;
PrintDocument pd = new PrintDocument();
//取消打印弹窗（PrintDocment默认的PrintController 是PrintControllerWithStatusDialog）
pd.PrintController = new StandardPrintController();
//pd.PrinterSettings.PrinterName = "打印机的名字";
//打印机名称可以不配置，取默认打印机
pd.DocumentName = string.Format("取号{0:yyyyMMddHHmmss}", DateTime.Now);
pd.OriginAtMargins = true;
pd.DefaultPageSettings.Margins = new Margins(, , , );
//打印开始前
pd.BeginPrint += new PrintEventHandler(pd_BeginPrint);
//打印输出（过程）
pd.PrintPage += new PrintPageEventHandler(pd_PrintPage);
//打印结束
pd.EndPrint += new PrintEventHandler(pd_EndPrint);
pd.Print(); return ;
}
catch (Exception ex)
{
NLog.Error(ex.ToString());
return ;
}
} private static void pd_EndPrint(object sender, PrintEventArgs e)
{
//打印结束后相关操作
} private static void pd_PrintPage(object sender, PrintPageEventArgs e)
{
try
{
int pagewidth = e.MarginBounds.Width;
float y = ;
_title = _title ?? string.Empty;
int titlerowspan = (_title.Length / ) + ;
y = CreateRectangleF(, y, pagewidth, e.Graphics.MeasureString("-", new Font("微软雅黑", , FontStyle.Bold)).Height, "------------------------------------", new Font("微软雅黑", , FontStyle.Bold), e);
y = CreateRectangleF(, y, pagewidth, e.Graphics.MeasureString("中A1", new Font("宋体", , FontStyle.Bold)).Height, _printStr, new Font("宋体", , FontStyle.Bold), e);
}
catch (InvalidPrinterException ex)
{
return;
}
} private static void pd_BeginPrint(object sender, PrintEventArgs e)
{
//也可以把一些打印的参数放在此处设置;
} /// <summary>
/// 绘制一个矩形区域文本文字
/// </summary>
private static float CreateRectangleF(float x, float y, float width, float height, string str, Font font, PrintPageEventArgs e)
{
StringFormat sf = new StringFormat { LineAlignment = StringAlignment.Center, Alignment = StringAlignment.Center };
//RectangleF rect = new RectangleF(x, y, width, height);
var size = MeasureStringExtend(e.Graphics, str, font, (int)width);
RectangleF rect = new RectangleF(x,y,size.Width, size.Height);
e.Graphics.DrawString(str, font, System.Drawing.Brushes.Black, rect, sf);
return rect.Bottom;
}
//多行文本自动换行
public static SizeF MeasureStringExtend(Graphics g, string text, Font font, int desWidth)
{
string tempString = text;
string workString = "";//当前打印的文本
int npos = ;//文字个数
int sp_pos = ;//
int line = ;//所在行数
int nWidth = ; //获取文字的Size对象
SizeF size = g.MeasureString(text, font);
//多行文本：文本的宽度大于纸张的宽度
if (size.Width > desWidth)
{
while (tempString.Length > )
{
//判断最后一行
if (npos > tempString.Length)
{
line++;
break;
}
//截取npos个文字，用于检测是否超出纸张宽度
workString = tempString.Substring(, npos);
//获取当前文本的宽度
nWidth = (int)g.MeasureString(workString, font).Width;
//仍然大于纸张宽度
if (nWidth > desWidth)
{
//最后一个空格的位置
sp_pos = workString.LastIndexOf(" ");
if (sp_pos > )
{
//从空格后一个字符作为起点，继续循环，可用于去除空格。这里并没有这么做。
tempString = tempString.Substring((sp_pos + ), tempString.Length - (sp_pos + ));
line++;
npos = ;
}
else //没有空格
{
tempString = tempString.Substring(npos, tempString.Length - npos);
line++;
npos = ;
}
}
npos++;
}
return new SizeF(desWidth, (line * size.Height));
}
else
return size; }
}
调用的时候
PrintSrivce.PrintNo(“这里是打印的文字内容，可以写很多，它会自动换行哦”);
为了做成Acivex插件，所以这里我们这么做：
[Guid("F83174A0-087D-4634-B6AE-0094CD392FD1")]//IE浏览器通过这个GUID可以查到打印方法，调用打印方法，打印。
public class PrinterHelper:ActiveXControl
{
public int Printing(string printStr)
{
return PrintService.PrintNo(printStr);
}
}
下面是打印的HTML页面
<object id="printer-ActiveX" classid="clsid:F83174A0-087D-4634-B6AE-0094CD392FD1" codebase="Printer.CAB#version=1,0,0" style="display: none;"></object>
var printerActiveX = document.getElementById('printer-ActiveX');
printerActiveX.Printing('这里是打印的文字内容，可以写很多，它会自动换行哦');
为什么这样就可以打印了呢？
其实之前省略了如何制作Acivex的步骤，下面介绍一下：
一、IObjectSafety接口
为了让ActiveX控件获得客户端的信任，控件类还需要实现一个名为“IObjectSafety”的接口。先创建该接口（注意，不能修改该接口的GUID值），接口内容如下：
ComImport, Guid("CB5BDC81-93C1-11CF-8F20-00805F2CD064")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IObjectSafety
{
[PreserveSig]
int GetInterfaceSafetyOptions(ref Guid riid, [MarshalAs(UnmanagedType.U4)] ref int pdwSupportedOptions, [MarshalAs(UnmanagedType.U4)] ref int pdwEnabledOptions);
[PreserveSig()]
int SetInterfaceSafetyOptions(ref Guid riid, [MarshalAs(UnmanagedType.U4)] int dwOptionSetMask, [MarshalAs(UnmanagedType.U4)] int dwEnabledOptions);
}
二、ActiveXControl控件基类
public abstract class ActiveXControl : IObjectSafety
{
#region IObjectSafety 成员 private const string _IID_IDispatch = "{00020400-0000-0000-C000-000000000046}";
private const string _IID_IDispatchEx = "{a6ef9860-c720-11d0-9337-00a0c90dcaa9}";
private const string _IID_IPersistStorage = "{0000010A-0000-0000-C000-000000000046}";
private const string _IID_IPersistStream = "{00000109-0000-0000-C000-000000000046}";
private const string _IID_IPersistPropertyBag = "{37D84F60-42CB-11CE-8135-00AA004BB851}"; private const int INTERFACESAFE_FOR_UNTRUSTED_CALLER = 0x00000001;
private const int INTERFACESAFE_FOR_UNTRUSTED_DATA = 0x00000002;
private const int S_OK = 0;
private const int E_FAIL = unchecked((int)0x80004005);
private const int E_NOINTERFACE = unchecked((int)0x80004002); private bool _fSafeForScripting = true;
private bool _fSafeForInitializing = true; public int GetInterfaceSafetyOptions(ref Guid riid, ref int pdwSupportedOptions, ref int pdwEnabledOptions)
{
int Rslt = E_FAIL; string strGUID = riid.ToString("B");
pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
switch (strGUID)
{
case _IID_IDispatch:
case _IID_IDispatchEx:
Rslt = S_OK;
pdwEnabledOptions = 0;
if (_fSafeForScripting == true)
pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER;
break;
case _IID_IPersistStorage:
case _IID_IPersistStream:
case _IID_IPersistPropertyBag:
Rslt = S_OK;
pdwEnabledOptions = 0;
if (_fSafeForInitializing == true)
pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA;
break;
default:
Rslt = E_NOINTERFACE;
break;
} return Rslt;
} public int SetInterfaceSafetyOptions(ref Guid riid, int dwOptionSetMask, int dwEnabledOptions)
{
int Rslt = E_FAIL; string strGUID = riid.ToString("B");
switch (strGUID)
{
case _IID_IDispatch:
case _IID_IDispatchEx:
if (((dwEnabledOptions & dwOptionSetMask) == INTERFACESAFE_FOR_UNTRUSTED_CALLER) &&
(_fSafeForScripting == true))
Rslt = S_OK;
break;
case _IID_IPersistStorage:
case _IID_IPersistStream:
case _IID_IPersistPropertyBag:
if (((dwEnabledOptions & dwOptionSetMask) == INTERFACESAFE_FOR_UNTRUSTED_DATA) &&
(_fSafeForInitializing == true))
Rslt = S_OK;
break;
default:
Rslt = E_NOINTERFACE;
break;
} return Rslt;
} #endregion
}
三、就是我们上面写的PrinterHelper类，并在这个类库的属性里设置“使程序集COM可见”。
四、使用VS2012发布
具体步骤如下：
1、
2、
3、
1）设置为简体中文，否则安装路径有中文的话就会出问题
2）设置默认安装路径
3）修改默认字体
4）每次升级，重新打包，只需要点击这一行右侧的“...”按钮，就会重新生成Code，安装时就会自动覆盖老版本
5）我们把INSTALLDIR里面改写为[ProgramFilesFolder]，方便后面我们使用CAB打包
4、
5、这一步很重要，在主输出上点右键属性
6、点击“6 Prepare for Release”下方的Release
注意点：该解决方案需要以管理员身份运行。
生成两个文件：
PrinterActiveX.MSI和Data1.cab
剩下一步就是签名了。
makecab.exe /f "cab.ddf"
signtool sign -f mantishell.pfx -p mantishell PrinterActiveX.CAB
.OPTION EXPLICIT
.Set Cabinet=on
.Set Compress=on
.Set MaxDiskSize=CDROM
.Set ReservePerCabinetSize=
.Set DiskDirectoryTemplate="."
.Set CompressionType=MSZIP
.Set CompressionLevel=
.Set CompressionMemory=
.Set CabinetNameTemplate="PrinterActiveX.CAB"
"installer.inf"
"PrinterActiveX.MSI"
"Data1.cab"
1、生成公钥文件
makecert -# 01 -r -n "CN=xxxx公司,O=xxxx,OU=xxxx,C=China,S=NanJing" -e 08/07/2019 -sky signature -sv mantishell.pvk d:\mantishell.cer
-e表示截至时间：如果去掉截至时间到2039年
私钥密码设置为：mantishell
2、生成证书
pvk2pfx.exe /pvk mantishell.pvk /pi mantishell /spc mantishell.cer /pfx mantishell.pfx /f
makecert -# 01 -r -n "CN=xxxx公司,O=xxxx公司,OU=xxxx公司,C=China,S=Nanjing" -sky signature -sv d:\ActiveX\CAB\mantishell.pvk d:\ActiveX\PrinterActiveX\CAB\mantishell.cer
