针对C＃的iText PDF版本7的问题

1 回答

• 2

  你有两个问题：

  • 文本未正确对齐（ Headers ）单元格中的文本对齐方式是使用 SetTextAlignment() 方法设置的 . SetHorizontalAlignment 设置包装文本的容器的对齐方式 .

  • 边框未按预期显示 . 首先，在iText 7中定义边框并不像在iText 5中那样定义默认的单元格行为 . 由于默认的tableRenderer没有使用border属性，因此除非您定义自定义渲染器并且make，否则_438169将无效 . 自己使用 property .

  定义自定义边框的正确方法是在单个单元格的级别上执行此操作 . 在这里您需要记住，由于边框重叠，如果您不希望边框显示，则需要将所有重叠边框设置为NO_BORDER：

  for(int j = 0; j<3; j++){
          Cell dCell = new Cell();
          //When setting borders to NO_BORDER, remember to set that border to NO_BORDER in all adjoining cells
          dCell.SetBorderLeft(Border.NO_BORDER);
          dCell.SetBorderRight(Border.NO_BORDER);
          dCell.Add(new Paragraph(String.Format("Entry, {0}-{1}",i,j)));
          //Dashed, striped, grooved and more can be specified
          if(i != 4) dCell.SetBorderBottom(new DashedBorder(1f));
          tab.AddCell(dCell);
      }
  

  上面的片段将导致条目之间没有边框的单元格 .

  for(int k = 4; k<6;k++){
          Cell d2Cell = new Cell();
          //Only the right-most border will not show, since the left-most borders of the neighbouring cells still get drawn
          d2Cell.SetBorderRight(Border.NO_BORDER);
          d2Cell.Add(new Paragraph(String.Format("Entry, {0}-{1}",i,k)).SetFontColor(Color.RED));
          //Specific borders apart from NO_BORDER do override the default
          if(i!=4) d2Cell.SetBorderBottom(new DashedBorder(1f));
          tab.AddCell(d2Cell);
      }
  

  上面的片段在最右边的单元格的右边只有没有边框 .

  下面是一个自包含的代码片段，它构造一个类似问题的表：

  public void CreateTable(string dest)
      {
          PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
          Document doc = new Document(pdfDoc);
  
          Table tab = new Table(6);
          //Table should take up the entire width
          tab.SetWidthPercent(100);
          tab.SetPadding(3);
          //Because table takes up the entire width, this has no visual effect, but otherwise it will center the table
          tab.SetHorizontalAlignment(HorizontalAlignment.CENTER);
  
  
          //Header cell
          Cell hCell = new Cell(1, 6);
          hCell.Add(new Paragraph("Centered Header"));
          //Text is aligned by calling SetTextAlignment
          hCell.SetTextAlignment(TextAlignment.CENTER);
  
          tab.AddCell(hCell);
          //Subheaders
          Cell shCellL = new Cell(1, 3);
          shCellL.Add(new Paragraph("Left aligned data"));
          shCellL.SetTextAlignment(TextAlignment.LEFT);
  
          Cell shCellR = new Cell(1, 3);
          shCellR.Add(new Paragraph("Right aligned data"));
          shCellR.SetTextAlignment(TextAlignment.RIGHT);
  
          tab.AddCell(shCellL);
          tab.AddCell(shCellR);
          //col names
          for (int i = 0; i < 6; i++)
          {
              Cell colName = new Cell();
              colName.Add(new Paragraph(String.Format("Col {0}", i)));
              colName.SetTextAlignment(TextAlignment.CENTER);
              tab.AddCell(colName);
          }
          //data cols
          for (int i = 1; i < 5; i++)
          {
              Cell nC = new Cell();
              nC.Add(new Paragraph("" + i));
              tab.AddCell(nC);
              for (int j = 0; j < 3; j++)
              {
                  Cell dCell = new Cell();
                  //When Setting borders to NO_BORDER, remember to Set that border to NO_BORDER in all adjoining cells
                  dCell.SetBorderLeft(Border.NO_BORDER);
                  dCell.SetBorderRight(Border.NO_BORDER);
                  dCell.Add(new Paragraph(String.Format("Entry, {0}-{1}", i, j)));
                  //Dashed, striped, grooved and more can be specified
                  if (i != 4) dCell.SetBorderBottom(new DashedBorder(1f));
                  tab.AddCell(dCell);
              }
              for (int k = 4; k < 6; k++)
              {
                  Cell d2Cell = new Cell();
                  //Only the rightmost border will not show, since the left-most borders of the neighbouring cells still get drawn
                  d2Cell.SetBorderRight(Border.NO_BORDER);
                  d2Cell.Add(new Paragraph(String.Format("Entry, {0}-{1}", i, k)).SetFontColor(Color.RED));
                  //Specific borders apart from NO_BORDER do override the default
                  if (i != 4) d2Cell.SetBorderBottom(new DashedBorder(1f));
                  tab.AddCell(d2Cell);
              }
          }
  
          //footer cell
          Cell fCell = new Cell(1, 6);
          fCell.Add(new Paragraph("footer"));
          tab.AddCell(fCell);
  
          //Add table to document
          doc.Add(new Paragraph("Complex Table example"));
          doc.Add(tab);
          doc.Close();
      }
  

  回复于 2024-04-29T05:50:27+08:00