C# iTextSharp ColumnText未显示在PDF上
我有以下代码:C# iTextSharp ColumnText未显示在PDF上,c#,itextsharp,C#,Itextsharp,我有以下代码: var doc = new Document(); var pdf = "C:/pdfs/" + DateTime.Now.ToString("yyyymmdd") + ".pdf"; PdfWriter writer = PdfWriter.GetInstance(doc, new FileStream(pdf, FileMode.Create)); doc.Open(); ColumnText ct = new ColumnText(cb); Phrase myTex
var doc = new Document();
var pdf = "C:/pdfs/" + DateTime.Now.ToString("yyyymmdd") + ".pdf";
PdfWriter writer = PdfWriter.GetInstance(doc, new FileStream(pdf, FileMode.Create));
doc.Open();
ColumnText ct = new ColumnText(cb);
Phrase myText = new Phrase("TEST paragraph\nNewline");
ct.SetSimpleColumn(myText, 34, 750, 580, 317, 15, Element.ALIGN_LEFT);
ct.Go();
doc.Close();
但是当我运行应用程序时,它没有显示在PDF上?我错过了什么?这对我来说很有用:
var doc = new Document();
var pdf = "D:/Temp/pdfs/" + DateTime.Now.ToString("yyyymmdd") + ".pdf"; // mm ??
var fi = new FileInfo(pdf);
var di = fi.Directory;
if (!di.Exists)
{
di.Create();
}
PdfWriter writer = PdfWriter.GetInstance(doc, new FileStream(pdf, FileMode.Create));
doc.Open();
PdfContentByte cb = writer.DirectContent;
ColumnText ct = new ColumnText(cb);
Phrase myText = new Phrase("TEST paragraph\nNewline");
ct.SetSimpleColumn(myText, 34, 750, 580, 317, 15, Element.ALIGN_LEFT);
ct.Go();
doc.Close();
也许您有一个未被覆盖的旧版本的输出?或者您看到了错误的输出?我运行了两次,它创建了两个文件20135826和20135926。可能在DateTime.Now.ToString(“yyyyMMdd”)中是您真正想要的,而不是分钟
var pdf = "D:/Temp/pdfs/" + DateTime.Now.ToString("yyyyMMdd") + ".pdf";
这对我很有用:
var doc = new Document();
var pdf = "D:/Temp/pdfs/" + DateTime.Now.ToString("yyyymmdd") + ".pdf"; // mm ??
var fi = new FileInfo(pdf);
var di = fi.Directory;
if (!di.Exists)
{
di.Create();
}
PdfWriter writer = PdfWriter.GetInstance(doc, new FileStream(pdf, FileMode.Create));
doc.Open();
PdfContentByte cb = writer.DirectContent;
ColumnText ct = new ColumnText(cb);
Phrase myText = new Phrase("TEST paragraph\nNewline");
ct.SetSimpleColumn(myText, 34, 750, 580, 317, 15, Element.ALIGN_LEFT);
ct.Go();
doc.Close();
也许您有一个未被覆盖的旧版本的输出?或者您看到了错误的输出?我运行了两次,它创建了两个文件20135826和20135926。可能在DateTime.Now.ToString(“yyyyMMdd”)中是您真正想要的,而不是分钟
var pdf = "D:/Temp/pdfs/" + DateTime.Now.ToString("yyyyMMdd") + ".pdf";
cb来自哪里?是否应该有一个PdfContentByte cb=writer.DirectContent;cb来自哪里?是否应该有一个PdfContentByte cb=writer.DirectContent;我缺少
PdfContentByte cb=writer.DirectContent代码>可能旧版本没有被覆盖。我缺少PdfContentByte cb=writer.DirectContent代码>并且可能没有覆盖旧版本。