如何使用iTextSharp 4.0.2設置100％的默認縮放比例？

Question

我希望PDF閱讀器（Adobe Reader）打開PDF文件並將縮放比例自動設置爲100％。

謝謝！

Answer 1

我在爲自己調查iTextSharp時發現了這段代碼片段，發現有2個人提及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();