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C# 设置或验证 PDF中的文本域格式

C#教程 2022-01-07

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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