如何使用iTextSharp 4.0.2设置100％的默认缩放比例？

Question

我希望PDF阅读器（Adobe Reader）打开PDF文件并将缩放比例自动设置为100％。

谢谢！

Answer 1

我在为自己调查iTextSharp时发现了这段代码片段，发现有2个人提及Open Actions。我已在下面包含http://www.developerbarn.com/blogs/richyrich-33.htm的片段：

PdfWriter writer = PdfWriter.GetInstance(doc, HttpContext.Current.Response.OutputStream); 

//this creates a new destination to send the action to when the document is opened. The zoom in this instance is set to 0.75f (75%). Again I use doc.PageSize.Height to set the y coordinate to the top of the page. PdfDestination.XYZ is a specific PdfDestination Type that allows us to set the location and zoom. 
PdfDestination pdfDest = new PdfDestination(PdfDestination.XYZ, 0, doc.PageSize.Height, 0.75f); 

//open our document 
doc.Open(); 

//here you put all the information you want to write to your PDF 

//create a new action to send the document to our new destination. 
PdfAction action = PdfAction.GotoLocalPage(1, pdfDest, writer); 

//set the open action for our writer object 
writer.SetOpenAction(action); 

//finally, close our document 
doc.Close();