在WPF将图片添加到固定页面 [英] Adding Image to FixedPage in WPF

问题描述

我希望能够与其他UI元素打印图像。我有一个固定页面实例，并尝试添加图像像这样

  //基本打印的东西
变种PrintDialog类=新PrintDialog类（）; 
 VAR固定文档=新的固定文档（）; 
 fixedDocument.DocumentPaginator.PageSize =新的大小（printDialog.PrintableAreaWidth，printDialog.PrintableAreaHeight）; 
 
固定页面页=新固定页面（）; 
 page.Width = fixedDocument.DocumentPaginator.PageSize.Width; 
 page.Height = fixedDocument.DocumentPaginator.PageSize.Height; 
 
图片IMG =新的图像（）; 
 
 //为printit我的项目的名称，图文件夹
变种uriImageSource =新的URI（@/为printit;组件/图/ Stuff.png，UriKind.RelativeOrAbsolute）; 
 img.Source =新的BitmapImage（uriImageSource）; 
 img.Width = 100; 
 img.Height = 100; 
 
 page.Children.Add（IMG）; 
 
 PageContent pageContent =新PageContent（）; 
（（IAddChild）pageContent）.AddChild（页）; 
 
 fixedDocument.Pages.Add（pageContent）; 
 
 //我打印的图像，请！ 
 _printDialog.PrintDocument（fixedDocument.DocumentPaginator，打印）; 
  

它给了我一张白纸。我不知道为什么，因为其他UI元素（如文本框，网​​格，矩形）出现，没有任何问题。我缺少什么？

谢谢！

PS好了，我发现了另一个解决方案。我不知道为什么，但与URI的图片正确加载

  VAR URI =新的URI（包：//应用：,,, /图/ Stuff.png）; 
  

解决方案

要在我的代码

更清晰

  VAR bitImage =新的BitmapImage（）; 
 bitImage.BeginInit（）; 
 bitImage.StreamSource =新的FileStream（文件名，FileMode.Open，FileAccess.Read）; 
 bitImage.DecodePixelWidth = 250; 
 bitImage.CacheOption = BitmapCacheOption.OnLoad; 
 bitImage.CreateOptions = BitmapCreateOptions.IgnoreColorProfile; 
 bitImage.EndInit（）; 
 bitImage.StreamSource.Seek（0，System.IO.SeekOrigin.Begin）; 
 bitImage.Freeze（）; 
 
变种tempImage =新的图像{源= bitImage}; 
变种imageObject =新ImageObject（tempImage，文件名）; 
 bitImage.StreamSource.Dispose（）; 
 page.Children.Add（imageObject）; 
  

I want to be able to print images with other UIElements. I have a FixedPage instance and trying to add image like so

// Basic printing stuff
var printDialog = new PrintDialog();
var fixedDocument = new FixedDocument();
fixedDocument.DocumentPaginator.PageSize = new Size(printDialog.PrintableAreaWidth, printDialog.PrintableAreaHeight);

FixedPage page = new FixedPage();
page.Width = fixedDocument.DocumentPaginator.PageSize.Width;
page.Height = fixedDocument.DocumentPaginator.PageSize.Height;

Image img = new Image();

// PrintIt my project's name, Img folder
var uriImageSource = new Uri(@"/PrintIt;component/Img/Stuff.png", UriKind.RelativeOrAbsolute);
img.Source = new BitmapImage(uriImageSource);
img.Width = 100;
img.Height = 100;

page.Children.Add(img);

PageContent pageContent = new PageContent();
((IAddChild)pageContent).AddChild(page);

fixedDocument.Pages.Add(pageContent);

// Print me an image please!
_printDialog.PrintDocument(fixedDocument.DocumentPaginator, "Print");

It gives me a blank paper. I'm wondering why, because other UIElements (such as TextBox, Grid, Rect) appear with no problems. What am I missing?

Thanks!

PS OK, I've found another solution. I don't know why but with that Uri a picture loads properly

var uri = new Uri("pack://application:,,,/Img/Stuff.png");

解决方案

To be more clear on my Code

var bitImage = new BitmapImage();
bitImage.BeginInit();
bitImage.StreamSource = new FileStream(fileName, FileMode.Open, FileAccess.Read);
bitImage.DecodePixelWidth = 250;
bitImage.CacheOption = BitmapCacheOption.OnLoad;
bitImage.CreateOptions = BitmapCreateOptions.IgnoreColorProfile;
bitImage.EndInit();
bitImage.StreamSource.Seek(0, System.IO.SeekOrigin.Begin);
bitImage.Freeze();

var tempImage = new Image {Source = bitImage};
var imageObject = new ImageObject(tempImage, fileName);
bitImage.StreamSource.Dispose();
page.Children.Add(imageObject);

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