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我在浏览器控件中加载了一个HTML页面。 HTML有一个javascript函数windows.print,它试图从我的浏览器打印。请如何传递windows.print()函数以通过Winforms C#打印。或者我怎样才能传递我想打印到C#中的JavaScript对象来打印。C#winforms使用Javascript的网页浏览器控件
请问我是C#初学者,希望能有详细的解释。非常感谢!
我在浏览器控件中加载了一个HTML页面。 HTML有一个javascript函数windows.print,它试图从我的浏览器打印。请如何传递windows.print()函数以通过Winforms C#打印。或者我怎样才能传递我想打印到C#中的JavaScript对象来打印。C#winforms使用Javascript的网页浏览器控件
请问我是C#初学者,希望能有详细的解释。非常感谢!
你也许可以做这样的事情
namespace WindowsFormsApplication
{
// This first namespace is required for the ComVisible attribute used on the ScriptManager class.
using System.Runtime.InteropServices;
using System.Windows.Forms;
// This is your form.
public partial class Form1 : Form
{
// This nested class must be ComVisible for the JavaScript to be able to call it.
[ComVisible(true)]
public class ScriptManager
{
// Variable to store the form of type Form1.
private Form1 mForm;
// Constructor.
public ScriptManager(Form1 form)
{
// Save the form so it can be referenced later.
mForm = form;
}
// This method can be called from JavaScript.
public void MethodToCallFromScript()
{
// Call a method on the form.
mForm.DoSomething();
}
// This method can also be called from JavaScript.
public void AnotherMethod(string message)
{
MessageBox.Show(message);
}
}
// This method will be called by the other method (MethodToCallFromScript) that gets called by JavaScript.
public void DoSomething()
{
// Indicate success.
MessageBox.Show("It worked!");
}
// Constructor.
public Form1()
{
// Boilerplate code.
InitializeComponent();
// Set the WebBrowser to use an instance of the ScriptManager to handle method calls to C#.
webBrowser1.ObjectForScripting = new ScriptManager(this);
// Create the webpage.
webBrowser1.DocumentText = @"<html>
<head>
<title>Test</title>
</head>
<body>
<input type=""button"" value=""Go!"" onclick=""window.external.MethodToCallFromScript();"" />
<br />
<input type=""button"" value=""Go Again!"" onclick=""window.external.AnotherMethod('Hello');"" />
</body>
</html>";
}
}
}
太感谢了,那工作。现在我试图向MethodCallFromScript方法添加一个参数,但它会引发错误。它只需要一个论据。 –
你总是可以定义一个方法来获取ScriptManager类的多个参数,定义一个适合你的js函数调用的方法签名并调用它。 – Charles
请你举个例子,说明如何用上面的代码实现这个功能? –