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C# 设置或验证 PDF中的文本域格式


概述

PDF中的文本域可以通过设置不同格式,用于显示数字、货币、日期、时间、邮政编码、电话号码和社保号等等。Adobe Acrobat提供了许多固定的JavaScripts用来设置和验证文本域的格式,如:AFNumber_Format(2, 0, 0, 0, “$”, true)和AFNumber_Keystroke(2, 0, 0, 0, “$”, true)。Format后缀的script是用来设置文本域显示的格式,而Keystroke后缀的script是用来验证输入内容。

Spire.PDF for .NET提供了相应的方法来设置和验证文本域格式。下面的表格罗列了常用的格式和Spire.PDF中对应的方法,可参考使用:

描述

示例

JavaScript

Spire.PDF提供的方法

日期

01/05/2022

AFDate_FormatEx(“mm/dd/yyyy”); AFDate_KeystrokeEx(“mm/dd/yyyy”);

GetDateFormatString(“mm/dd/yyyy”); GetDateKeystrokeString(“mm/dd/yyyy”);

邮政编码

12345

AFSpecial_Format(0); AFSpecial_Keystroke(0);

GetSpecialFormatString(0); GetSpecialKeystrokeString(0);

邮政编码+4

12345-1234

AFSpecial_Format(1); AFSpecial_Keystroke(1);

GetSpecialFormatString(1); GetSpecialKeystrokeString(1);

电话号码

(123)456-7890

AFSpecial_Format(2); AFSpecial_Keystroke(2);

GetSpecialFormatString(2); GetSpecialKeystrokeString(2);

货币

$12345.00 -$12345.00

AFNumber_Format(2,0,0,0,”$”,true); AFNumber_Keystroke(2,0,0,0,”$”,true);

GetNumberFormatString(2,0,0,0,”$”,true); GetNumberKeystrokeString(2,0,0,0,”$”,true);

验证

1.5≤输入值≤5.5

AFRange_Validate(true,1.5,true,5.5);

GetRangeValidateString(true,1.5,true,5.5);

引入dll

1.通过NuGet安装dll(2种方法)

  1.1 可以在Visual Studio中打开“解决方案资源管理器”,鼠标右键点击“引用”,“管理NuGet包”,然后搜索“Spire.PDF”,点击“安装”。

  1.2 将以下内容复制到PM控制台安装。

Install-Package Spire.PDF -Version 7.12.1

2.手动添加dll引用

可通过手动下载包,然后解压,找到BIN文件夹下的Spire.Pdf.dll。在Visual Studio中打开“解决方案资源管理器”,鼠标右键点击“引用”,“添加引用”将本地路径BIN文件夹下的dll文件添加引用至程序。

代码(C#/VB.NET)

C#

using Spire.Pdf; using Spire.Pdf.Actions; using Spire.Pdf.Fields; using System.Drawing;  namespace SetTextFormatInTextboxField {     class Program     {         static void Main(string[] args)         {             //新建PDF文档,并添加空白页             PdfDocument pdf = new PdfDocument();             PdfPageBase page = pdf.Pages.Add();              //定义坐标变量             float X = 10;             float Y = 10;             float width = 100;             float height = 20;              //实例化一个文本域对象,并设置它的位置和边框样式             PdfTextBoxField textbox = new PdfTextBoxField(page, "Number-TextBox");                        textbox.Bounds = new RectangleF(X, Y, width, height);             textbox.BorderWidth = 0.75f;             textbox.BorderStyle = PdfBorderStyle.Solid;              //给文本域的键盘击键事件设置一个JavaScript动作用于验证输入内容是否符合要求             string js = PdfJavaScript.GetNumberKeystrokeString(2, 0, 0, 0, "$", true);             PdfJavaScriptAction jsAction = new PdfJavaScriptAction(js);             textbox.Actions.KeyPressed = jsAction;              //设置文本域内容显示为数字货币             js = PdfJavaScript.GetNumberFormatString(2, 0, 0, 0, "$", true);             jsAction = new PdfJavaScriptAction(js);             textbox.Actions.Format = jsAction;              //添加文本域到PDF中,并保存文档             pdf.Form.Fields.Add(textbox);                //添加文本框,设置文本内容显示为日期格式             PdfTextBoxField textbox1 = new PdfTextBoxField(page, "DateFormat-TextBox");             textbox1.Bounds = new RectangleF(X+200, Y, width, height);             textbox1.BorderWidth = 0.75f;             textbox1.BorderStyle = PdfBorderStyle.Solid;             string js1 = PdfJavaScript.GetDateKeystrokeString("mm/dd/yyyy");             PdfJavaScriptAction jsAction1 = new PdfJavaScriptAction(js1);             textbox1.Actions.KeyPressed = jsAction1;             js1 = PdfJavaScript.GetDateFormatString("mm/dd/yyyy");             jsAction1 = new PdfJavaScriptAction(js1);             textbox1.Actions.Format = jsAction1;             pdf.Form.Fields.Add(textbox1);               //添加文本框,设置文本内容显示为邮政编码格式             PdfTextBoxField textbox2 = new PdfTextBoxField(page, "SpecialFormat0-1-TextBox");             textbox2.Bounds = new RectangleF(X + 400, Y, width, height);             textbox2.BorderWidth = 0.75f;             textbox2.BorderStyle = PdfBorderStyle.Solid;             //string js2 = PdfJavaScript.GetSpecialKeystrokeString(0);             string js2 = PdfJavaScript.GetSpecialKeystrokeString(1);              PdfJavaScriptAction jsAction2 = new PdfJavaScriptAction(js2);             textbox2.Actions.KeyPressed = jsAction2;             //js2 = PdfJavaScript.GetSpecialFormatString(0);             js2 = PdfJavaScript.GetSpecialFormatString(1);             jsAction2 = new PdfJavaScriptAction(js2);             textbox2.Actions.Format = jsAction2;             pdf.Form.Fields.Add(textbox2);               //添加文本框,设置文本内容显示为百分数             PdfTextBoxField textbox3 = new PdfTextBoxField(page, "SpecialFormat2-TextBox");             textbox3.Bounds = new RectangleF(X, Y+50, width, height);             textbox3.BorderWidth = 0.75f;             textbox3.BorderStyle = PdfBorderStyle.Solid;             string js3 = PdfJavaScript.GetPercentKeystrokeString(1,0);             PdfJavaScriptAction jsAction3 = new PdfJavaScriptAction(js3);             textbox3.Actions.KeyPressed = jsAction3;             js3 = PdfJavaScript.GetPercentFormatString(1, 0);             jsAction3 = new PdfJavaScriptAction(js3);             textbox3.Actions.Format = jsAction3;             pdf.Form.Fields.Add(textbox3);              //添加文本框,设置数据验证             PdfTextBoxField textbox4 = new PdfTextBoxField(page, "RangeValidate-TextBox");             textbox4.Bounds = new RectangleF(X+200, Y + 50, width, height);             textbox4.BorderWidth = 0.75f;             textbox4.BorderStyle = PdfBorderStyle.Solid;             string js4 = PdfJavaScript.GetRangeValidateString(true, -18, true, 18);             PdfJavaScriptAction jsAction4 = new PdfJavaScriptAction(js4);             textbox4.Actions.Format = jsAction4;             pdf.Form.Fields.Add(textbox4);              //保存文档             pdf.SaveToFile("FormatField.pdf", FileFormat.PDF);         }     } }

VB.NET

Imports Spire.Pdf Imports Spire.Pdf.Actions Imports Spire.Pdf.Fields Imports System.Drawing  Namespace SetTextFormatInTextboxField     Class Program         Private Shared Sub Main(args As String())             '新建PDF文档,并添加空白页             Dim pdf As New PdfDocument()             Dim page As PdfPageBase = pdf.Pages.Add()              '定义坐标变量             Dim X As Single = 10             Dim Y As Single = 10             Dim width As Single = 100             Dim height As Single = 20              '实例化一个文本域对象,并设置它的位置和边框样式             Dim textbox As New PdfTextBoxField(page, "Number-TextBox")             textbox.Bounds = New RectangleF(X, Y, width, height)             textbox.BorderWidth = 0.75F             textbox.BorderStyle = PdfBorderStyle.Solid              '给文本域的键盘击键事件设置一个JavaScript动作用于验证输入内容是否符合要求             Dim js As String = PdfJavaScript.GetNumberKeystrokeString(2, 0, 0, 0, "$", True)             Dim jsAction As New PdfJavaScriptAction(js)             textbox.Actions.KeyPressed = jsAction              '设置文本域内容显示为数字货币             js = PdfJavaScript.GetNumberFormatString(2, 0, 0, 0, "$", True)             jsAction = New PdfJavaScriptAction(js)             textbox.Actions.Format = jsAction              '添加文本域到PDF中,并保存文档             pdf.Form.Fields.Add(textbox)               '添加文本框,设置文本内容显示为日期格式             Dim textbox1 As New PdfTextBoxField(page, "DateFormat-TextBox")             textbox1.Bounds = New RectangleF(X + 200, Y, width, height)             textbox1.BorderWidth = 0.75F             textbox1.BorderStyle = PdfBorderStyle.Solid             Dim js1 As String = PdfJavaScript.GetDateKeystrokeString("mm/dd/yyyy")             Dim jsAction1 As New PdfJavaScriptAction(js1)             textbox1.Actions.KeyPressed = jsAction1             js1 = PdfJavaScript.GetDateFormatString("mm/dd/yyyy")             jsAction1 = New PdfJavaScriptAction(js1)             textbox1.Actions.Format = jsAction1             pdf.Form.Fields.Add(textbox1)               '添加文本框,设置文本内容显示为邮政编码格式             Dim textbox2 As New PdfTextBoxField(page, "SpecialFormat0-1-TextBox")             textbox2.Bounds = New RectangleF(X + 400, Y, width, height)             textbox2.BorderWidth = 0.75F             textbox2.BorderStyle = PdfBorderStyle.Solid             'string js2 = PdfJavaScript.GetSpecialKeystrokeString(0);             Dim js2 As String = PdfJavaScript.GetSpecialKeystrokeString(1)              Dim jsAction2 As New PdfJavaScriptAction(js2)             textbox2.Actions.KeyPressed = jsAction2             'js2 = PdfJavaScript.GetSpecialFormatString(0);             js2 = PdfJavaScript.GetSpecialFormatString(1)             jsAction2 = New PdfJavaScriptAction(js2)             textbox2.Actions.Format = jsAction2             pdf.Form.Fields.Add(textbox2)               '添加文本框,设置文本内容显示为百分数             Dim textbox3 As New PdfTextBoxField(page, "SpecialFormat2-TextBox")             textbox3.Bounds = New RectangleF(X, Y + 50, width, height)             textbox3.BorderWidth = 0.75F             textbox3.BorderStyle = PdfBorderStyle.Solid             Dim js3 As String = PdfJavaScript.GetPercentKeystrokeString(1, 0)             Dim jsAction3 As New PdfJavaScriptAction(js3)             textbox3.Actions.KeyPressed = jsAction3             js3 = PdfJavaScript.GetPercentFormatString(1, 0)             jsAction3 = New PdfJavaScriptAction(js3)             textbox3.Actions.Format = jsAction3             pdf.Form.Fields.Add(textbox3)              '添加文本框,设置数据验证             Dim textbox4 As New PdfTextBoxField(page, "RangeValidate-TextBox")             textbox4.Bounds = New RectangleF(X + 200, Y + 50, width, height)             textbox4.BorderWidth = 0.75F             textbox4.BorderStyle = PdfBorderStyle.Solid             Dim js4 As String = PdfJavaScript.GetRangeValidateString(True, -18, True, 18)             Dim jsAction4 As New PdfJavaScriptAction(js4)             textbox4.Actions.Format = jsAction4             pdf.Form.Fields.Add(textbox4)              '保存文档             pdf.SaveToFile("FormatField.pdf", FileFormat.PDF)         End Sub     End Class End Namespace

设置后的文本框域填写效果如图:

C# 设置或验证 PDF中的文本域格式

 

 

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