Changing the width of an existing pdf document

[jjads]

Hello,

I want to change the width of every page in a pdf document, because later I want to add some handwritten notes to the left and right side of a pdf page.


  document.PageSettings.Size = new SizeF(20, 400);
                for (int i = 0; i < lDoc.Pages.Count; i++)
                {
                    document.ImportPage(lDoc, i);
 }

[Sathya Ponnusamy]

Hi JJads, 

Thank you contacting Syncfusion support. 

Currently we do not have support to resize existing document. However, as a workaround we can achieve your requirement by using PdfTemplate. 

Please find below code snippet and workaround sample for your reference. 

Code snippet: 

string path = AppDomain.CurrentDomain.BaseDirectory + @"Data\sample.pdf"; 

 

// Create a new instance of PdfLoadedDocument class. 

PdfLoadedDocument document = new PdfLoadedDocument(path); 

 

// Create a new instance of PdfDocument class.  

PdfDocument doc = new PdfDocument(); 

 

//Set Margin for PdfDocument page 

doc.PageSettings.Margins.Left = 50; 

doc.PageSettings.Margins.Right = 50; 

doc.PageSettings.Margins.Top = 0; 

doc.PageSettings.Margins.Bottom = 0; 

 

for (int i = 0; i < document.Pages.Count; i++) 

{ 

   PdfTemplate template = document.Pages[i].CreateTemplate(); 

   PdfPage page = doc.Pages.Add(); 

 

   // Create Pdf graphics for the page. 

   PdfGraphics g = page.Graphics; 

 

   g.DrawPdfTemplate(template, new PointF(0, 0), new SizeF(page.GetClientSize().Width, page.GetClientSize().Height)); 

} 

 

doc.Save("output.pdf", HttpContext.ApplicationInstance.Response, HttpReadType.Open); 

 

return null; 

 

Sample Link:  

http://www.syncfusion.com/downloads/support/directtrac/general/ze/WebApplication5426294961.zip  

Please find below UG documentation link for PdfTemplate, 

https://help.syncfusion.com/file-formats/pdf/working-with-pdf-templates  

Kindly try the given work around sample and let us know whether the given sample is satisfied your requirements.  

Please let us know if you need further assistance on this.  

Regards, 

Sathya P 

[jjads]

thanks, but when changing the margin, the document will be compressed, shrinked so that the text is not readable anymore (Margins.... =250 ) , it shouldnt be like that.

[Sathya Ponnusamy]

Hi Srikanth, 

Thanks for your update. 

We have checked your query and this behavior is occurred due to margin value is larger. While, setting margin for PDF document, page width will be reduced based on left and right margin values. So, only this behavior is occurred. To, avoid this behavior we have to update document size. Please find the below code snippet, it will meet your requirement. 

Note: Please assign required margin value for highlighted variables. 

Code snippet: 

string path = AppDomain.CurrentDomain.BaseDirectory + @"Data\sample.pdf"; 

 

// Create a new instance of PdfLoadedDocument class. 

PdfLoadedDocument document = new PdfLoadedDocument(path); 

 

// Create a new instance of PdfDocument class.  

PdfDocument doc = new PdfDocument(); 

 

// define left and right margin here 

float left = 250; 

float right = 250; 

float top = 0; 

float bottom = 0; 

 

SizeF size = new SizeF(document.Pages[0].Size.Width + left + right, document.Pages[0].Size.Height + top + bottom); 

 

//Need to set page size here, if not it will use default size. 

doc.PageSettings.Size = size; 

 

if (size.Width > size.Height) 

   doc.PageSettings.Orientation = PdfPageOrientation.Landscape; 

 

//Set Margin for PdfDocument page  

doc.PageSettings.Margins.Left = left; 

doc.PageSettings.Margins.Right = right; 

doc.PageSettings.Margins.Top = top; 

doc.PageSettings.Margins.Bottom = bottom; 

 

for (int i = 0; i < document.Pages.Count; i++) 

{ 

   PdfTemplate template = document.Pages[i].CreateTemplate(); 

   PdfPage page = doc.Pages.Add(); 

 

   // Create Pdf graphics for the page. 

   PdfGraphics g = page.Graphics; 

 

   g.DrawPdfTemplate(template, new PointF(0, 0), new SizeF(page.GetClientSize().Width, page.GetClientSize().Height)); 

} 

 

doc.Save("output.pdf", HttpContext.ApplicationInstance.Response, HttpReadType.Open); 

 

return null; 

Sample Link: http://www.syncfusion.com/downloads/support/directtrac/general/ze/WebApplication5_(2)-697015939.zip  

Please try this and let me know if you have any questions. 

Regards, 

Sathya