捕获和转换Web的工具

将网页和HTML转换为PDFASP.NET API

将网页和HTML转换为PDF时 GrabzIt的ASP.NET API 提供以下有助于帮助的功能 integrate GrabzIt into您的系统尽可能地容易。 但是,在开始之前,请记住 URLToPDF, HTMLToPDF or FileToPDF 方法 Save or SaveTo 必须调用方法来获取PDF屏幕截图。

基本选项

PDF屏幕截图将捕获整个网页,并将创建与原始网页相同长度的PDF文档。 只需一个参数即可转换网页 intpdf文档或 将HTML转换为PDF 如下所示。

grabzIt.URLToPDF("https://www.tesla.com");
//Then call the Save or SaveTo method
grabzIt.HTMLToPDF("<html><body><h1>Hello World!</h1></body></html>");
//Then call the Save or SaveTo method
grabzIt.FileToPDF("example.html");
//Then call the Save or SaveTo method

自订识别码

您可以将自定义标识符传递给 PDF 方法,如下所示,此值然后返回到您的GrabzIt ASP.NET处理程序。 例如,该自定义标识符可以是数据库标识符,从而允许将屏幕截图与特定数据库记录相关联。

GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");

PDFOptions options = new PDFOptions();
options.CustomId = "123456";

grabzIt.URLToPDF("https://www.tesla.com", options);
//Then call the Save method
grabzIt.Save("http://www.example.com/Home/Handler");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");

PDFOptions options = new PDFOptions();
options.CustomId = "123456";

grabzIt.HTMLToPDF("<html><body><h1>Hello World!</h1></body></html>", options);
//Then call the Save method
grabzIt.Save("http://www.example.com/Home/Handler");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");

PDFOptions options = new PDFOptions();
options.CustomId = "123456";

grabzIt.FileToPDF("example.html", options);
//Then call the Save method
grabzIt.Save("http://www.example.com/Home/Handler");

页眉和页脚

创建PDF屏幕截图时,您可以声明要应用特定的 模板 到生成的PDF。 该模板必须预先创建,并将定义页眉和页脚的内容以及任何特殊变量。 在下面的示例代码中,用户正在应用PDF模板“我的模板”。

如果页眉或页脚分别没有足够大的顶部或底部边距,则它将不会出现在PDF中。 在下面的示例中,我们将顶部和底部边距设置为20以提供足够的空间。

GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");

PDFOptions options = new PDFOptions();
options.MarginTop = 20;
options.MarginBottom = 20;
options.TemplateId = "my template";

grabzIt.URLToPDF("https://www.tesla.com", options);
//Then call the Save or SaveTo method
grabzIt.SaveTo("result.pdf");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");

PDFOptions options = new PDFOptions();
options.MarginTop = 20;
options.MarginBottom = 20;
options.TemplateId = "my template";

grabzIt.HTMLToPDF("<html><body><h1>Hello World!</h1></body></html>", options);
//Then call the Save or SaveTo method
grabzIt.SaveTo("result.pdf");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");

PDFOptions options = new PDFOptions();
options.MarginTop = 20;
options.MarginBottom = 20;
options.TemplateId = "my template";

grabzIt.FileToPDF("example.html", options);
//Then call the Save or SaveTo method
grabzIt.SaveTo("result.pdf");

将HTML元素转换为PDF

如果只想直接转换div或span等HTML元素 int您可以使用GrabzIt的ASP.NET库获得PDF文档。 您必须通过 CSS选择器 您希望转换为HTML元素的 TargetElement 参数。

...
<span id="Article">
<p>This is the content I am interested in.</p>
<img src="myimage.jpg">
</span>
...

在此示例中,我们希望捕获跨度中ID为的所有内容 Article,因此我们将其传递给GrabzIt,如下所示。

GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");

PDFOptions options = new PDFOptions();
options.TargetElement = "#Article";

grabzIt.URLToPDF("http://www.bbc.co.uk/news", options);
//Then call the Save or SaveTo method
grabzIt.SaveTo("result.pdf");