Question

我正在使用iTextSharp创建PDF，如何将textField添加到PdfPCell中？

Answer 1

你不会真正向PdfPCell添加'文本字段'，你要创建一个PdfPCell并添加文本（或其他东西）。

mikesdotnetting.com可能有clearest example，并且始终有iTextSharp tutorial。

Answer 2

试一试。它对我有用。

Document doc = new Document(PageSize.LETTER, 18f, 18f, 18f, 18f);
MemoryStream ms = new MemoryStream();
PdfWriter writer = PdfWriter.GetInstance(doc, ms);
doc.Open();

// Create your PDFPTable here....

TextField tf = new TextField(writer, new iTextSharp.text.Rectangle(67, 585, 140, 800), "cellTextBox");
PdfPCell tbCell = new PdfPCell();
iTextSharp.text.pdf.events.FieldPositioningEvents events = new iTextSharp.text.pdf.events.FieldPositioningEvents(writer, tf.GetTextField());
tbCell.CellEvent = events; 

myTable.AddCell(tbCell);

// More code...

我从this post.

改编了这段代码

修改

这是一个完整的工作控制台应用程序，它将TextBox放在表格单元格中。我试图将代码保持在最低限度。

using System; using System.IO; using iTextSharp.text; using iTextSharp.text.pdf; namespace iTextSharpTextBoxInTableCell { class Program { static void Main(string[] args) { // Create a PDF with a TextBox in a table cell BaseFont bfHelvetica = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1250, false); Font helvetica12 = new Font(bfHelvetica, 12, Font.NORMAL, Color.BLACK); Document doc = new Document(PageSize.LETTER, 18f, 18f, 18f, 18f); FileStream fs = new FileStream("TextBoxInTableCell.pdf", FileMode.Create); PdfWriter writer = PdfWriter.GetInstance(doc, fs); doc.Open(); PdfPTable myTable = new PdfPTable(1); myTable.TotalWidth = 568f; myTable.LockedWidth = true; myTable.HorizontalAlignment = 0; TextField tf = new TextField(writer, new iTextSharp.text.Rectangle(67, 585, 140, 800), "cellTextBox"); PdfPCell tbCell = new PdfPCell(new Phrase(" ", helvetica12)); iTextSharp.text.pdf.events.FieldPositioningEvents events = new iTextSharp.text.pdf.events.FieldPositioningEvents(writer, tf.GetTextField()); tbCell.CellEvent = events; myTable.AddCell(tbCell); doc.Add(myTable); doc.Close(); fs.Close(); Console.WriteLine("End Of Program Execution"); Console.ReadLine(); } } }

机会

Answer 3

DaveB的答案有效，但问题是你必须知道将文本字段放入的坐标，（67,585,140,800）。更常见的方法是创建表格单元格并向单元格添加自定义事件。当表生成调用celllayout事件时，它会传递单元格的尺寸和坐标，您可以使用它来放置文本字段并调整其大小。

首先创建此调用，即自定义事件

public class CustomCellLayout : IPdfPCellEvent
{
    private string fieldname;

    public CustomCellLayout(string name)
    {
        fieldname = name;
    }

    public void CellLayout(PdfPCell cell, Rectangle rectangle, PdfContentByte[] canvases)
    {
        PdfWriter writer = canvases[0].PdfWriter;

        // rectangle holds the dimensions and coordinates of the cell that was created
        // which you can then use to place the textfield in the correct location
        // and optionally fit the textfield to the size of the cell


        float textboxheight = 12f;
        // modify the rectangle so the textfield isn't the full height of the cell
        // in case the cell ends up being tall due to the table layout
        Rectangle rect = rectangle;
        rect.Bottom = rect.Top - textboxheight;

        TextField text = new TextField(writer, rect, fieldname);
        // set and options, font etc here

        PdfFormField field = text.GetTextField();

        writer.AddAnnotation(field);
    }
}

然后在您创建表格的代码中，您将使用如下事件：

PdfPCell cell = new PdfPCell()
    {
        CellEvent = new CustomCellLayout(fieldname)
        // set borders, or other cell options here
    };

如果您想要不同类型的文本字段，您可以创建其他自定义事件，或者您可以向CustomCellLayout类添加额外的属性，例如您使用类构造函数设置的“fontsize”或“multiline”，然后检查用于在CellLayout代码中调整文本域属性。

ITextSharp - PdfPCell中的文本字段

3 个答案: