For web developers, it's a lot easier to create a PDF from the HTML format, basically because it provides a better option to manage the PDF. For this task, the web developers use libraries like wkhtmltopdf. wkhtmltopdf is a command line tools to render HTML into PDF using the QT Webkit rendering engine. These run entirely 'headless' and do not require a display or display service.

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In this article, you will learn how to use wkhtmltopdf easily with C# in your Windows Forms application.

Requirements

• You will need Visual Studio with NuGet Package Manager (>=2010).

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In our case, we are going to use Visual Studio Community, so let's get started !

1. Install Pechkin

To generate a PDF from a HTML file with C# in Windows Forms, we are going to use Pechkin, the .NET Wrapper for wkhtmltopdf DLL, library that uses Webkit engine to convert HTML pages to PDF. Pechkin is available as a NuGet package, in most cases you should use SynchronizedPechkin as it protects multithreaded code from crashing the lib. But for simple usage from one thread, you can use SimplePechkin directly.

Note

Pechkin includes the latest version of wkhtmltox DLL in the project (and in NuGet package) along with its dependencies, and copied into build folder on project build. So there's no need to install any prerequisites before using the library on the computer.

Install the package with Visual Studio, by accessing the NuGET package manager. Do right click in your project in the Solution Explorer at the right top of Visual Studio and select Manage NuGet packages in the dropdown menu:

Pdf To Html5 C 230

Now from the emergent window search for the Pechkin.Synchronized package, select it and install it in your project:

Once the setup finishes, you will be able to use the wrapper in your project.

2. Generate a PDF

The Convert method converts a HTML string (or a configuration object) to PDF with the given settings and returns a byte arrays that store the binary data of the PDF.

Note

With all the examples, the pdfContent variable will generate only the content of the PDF and you won't see anything, therefore don't forget to write the created content into a file by following the step #3.

A. Generate simple PDF from a HTML string

You can create a PDF quickly with an empty global configuration object. Import the Pechkin type in your class:

And then create the content of the PDF with the following snippet:

B. Generate PDF from a Website

Instead of a plain HTML string, you can render a website through it's URL with the SetPageUri method in the configuration. Import the Pechkin.Synchronized type at the top of your class:

And then use the following code to create a PDF from a website:

C. Generate PDF from a local HTML file

To create a PDF from a local HTML file, you can do it by providing the local filepath of the file with the SetPageUri method (in the same way that you do with a website) but at the same time, allow the usage of local resources with the SetAllowLocalContent method (note that you need to append as prefix file:/// to the html filepath). Import the Pechkin.Synchronized type at the top of your class:

And use the following code to create a PDF from a local HTML file:

Pdf To Html5 C# Pdf

Now that you know how to generate the content of a PDF, you only need to learn how to save it.

3. Save the PDF

As mentioned previously, Pechkin generates a PDF and return the data as a byte array, that means that you will need to write that data somehow by yourself. We will write the PDF into a file using the FileStream class included in the assembly System.IO. With FileStream you can read from, write to, open, and close files on a file system, as well as to manipulate other file related operating system handles including pipes, standard input, and standard output. Before using it, import the following type with the using directive in the top of your class:

And then, use the class to create a file with the returned ByteArray as content. You can use the following method that expects as first parameter the absolute path of the file and as second parameter the data to write (pdf content):

Then it can be used as shown in the following example:

Happy coding !

HTML5 Date picker : It Provides input type date which enables functionality to select date from calender. You can add restrictions to the HTML5.

It provides quick functionality to embed date picker in your input field but there are few limitations example supports only in latest HTML5 supported browsers.

HTML5 Date Picker – Date input Example

Let us create a simple date picker using HTML5-

Add Input type “date” to enable date picker.

Pdf To Html5 C# Converter

The above example will produce the following example as below-

Adding Restrictions

Lets Add a custom restriction –

Enter A date Between 2005-01-01 and 2010-01-01 – If you add this restriction it will accept only date between the given range.

The above code will show the calender betwen the added range and the date fields within the range will be selectable.

The above example will produce the following output-

The above output displays the date between the given range. If you try to select date beyond the range it will restrict you.

HTML5 time input – Time Picker

Let us create input field to select time in HTML5.

HTML5 datetime-local Input Example

Now let us create datetime-local picker input type.

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The above example will produce following output as below-

Pdf To Html5 C# Free

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