C〓〓win formとJavascriptの相互呼び出し

12518 ワード

<html>
<head>
    <meta http-equiv="Content-Language" content="zh-cn">
    <script language="javascript" type="text/javascript">
<!--    C#        -->
function messageBox(message)
{
    alert(message);
}
</script>
</head>
<body>
    <!--   C#   -->
    <button onclick="window.external.MyMessageBox('javascript  C#  ')">
        javascript  C#  </button>
</body>
</html><html>
<head>
    <meta http-equiv="Content-Language" content="zh-cn">
    <script language="javascript" type="text/javascript">
<!--    C#        -->
function messageBox(message)
{
    alert(message);
}
    </script>
</head>
<body>
    <!--   C#   -->
    <button onclick="window.external.MyMessageBox('javascript  C#  ')">
        javascript  C#  </button>
</body>
</html>
 
 、  Windows    
 
1.  Windows       
2. Form1     WebBrowser   
3. Form1      
 
[System.Runtime.InteropServices.ComVisibleAttribute(true)]
          com   。            。
 
[System.Runtime.InteropServices.ComVisibleAttribute(true)]
public partial class Form1 : Form
 
 
Url  :WebBrowser         
 
ObjectForScripting  :        WebBrowser                。
 
 Url              URL  。
 
JavaScript  window.external  C#     。  ObjectForScripting                  。        : 
 
 
System.IO.FileInfo file = new System.IO.FileInfo("index.htm");
// WebBrowser         
webBrowser1.Url = new Uri(file.FullName);
//              
webBrowser1.ObjectForScripting = this;
 
 
5.C#  JavaScript  
 
  WebBrowser  Document    InvokeScript         Javascript  。 : 
 
//   JavaScript messageBox  ,     
object[] objects = new object[1];
objects[0] = "C#  JavaScript  ";
webBrowser1.Document.InvokeScript("messageBox", objects);
 
 
 
 
==============================================================================
 
JS    : 
<script language=”javascript”>
function jsAlert(infor)
{
alert(‘     、        ,    ,      !’);
return;
}
</script>
  C#      :
  using System.Security.Permissions; 
  [PermissionSet(SecurityAction.Demand, Name = "FullTrust")]//    :             ,      !
  [System.Runtime.InteropServices.ComVisibleAttribute(true)] 
 
       :
  webBrowser1.Document.InvokeScript("jsAlert ", new string[] {‘ssss’}); 
 
  JS   C#    :
 
  C#    :
 
public void ShowMessage(string message)
{
MessageBox.Show(message);
}
 
  JS      :
 
<script language=”javascript”>
function InvokeFunc()
{
window.external.ShowMessage(‘  ’);
}
</script>
 
     C#  winform     ,            WebBrowser      。    ,                 ,           JS  ,   ,                         。                 。
===========================================================================================================
      c#     js             
JScript code
 
 
<script language="javascript"type="text/javascript">
varg_h=55;
 
functiondisplayVar(varname)
{
try
{
returneval(varname);
}
catch(e)
{
returne.description;
}
}
</script>
 
 
 
c#        g_h         ,       。
       ,     ,  eval           ,           g_h
C# code
 
 
object[] paramArray=newobject[1];
paramArray[0]="g_h";
webBrowser1.Document.InvokeScript("displayVar", paramArray);
 
 
webBrowser1.Document.InvokeScript("JS   ", New Object() {  })
    :      ”,“    。
webBrowser1.Document.InvokeScript("Go", New Object() {"home","back"})
 
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
        
 
 Case 1  ,      ,Web   HTML     ,   Windows Form    ,           Web    WinForm;    
 
 ,WinForm        Web   HTML    ,    Web      Script ?
 
     Web              。  HTML    Javascript:
 
function DoAdd(a, b) {
    return a + b;
}
  ,    WinForm   ,        :
 
object oSum = webBrowser.Document.InvokeScript("DoAdd", new object[] { 1, 2 });
int sum = Convert.ToInt32(oSum);
  ,         Web          ,     ?  .Net      ,      COM 。IHTMLWindow2        
 
 
string scriptline01 = @"function ShowPageInfo() {";
string scriptline02 = @"      var numLinks = document.links.length; ";
string scriptline03 = @"      var numForms = document.forms.length; ";
string scriptline04 = @"      var numImages = document.images.length; ";
string scriptline05 = @"      var numScripts = document.scripts.length; ";
string scriptline06 = @"      alert('       :\r
:' + numLinks + "
;
string scriptline07 = @"         '\r
:' + numForms + "
;
string scriptline08 = @"         '\r
:' + numImages + "
;
string scriptline09 = @"         '\r
:' + numScripts);}"
;
string scriptline10 = @"ShowPageInfo();";
 
string strScript = scriptline01 + scriptline02 + scriptline03 + scriptline04 + scriptline05 +
                    scriptline06 + scriptline07 + scriptline08 + scriptline09 + scriptline10;
 
IHTMLWindow2 win = (IHTMLWindow2)webBrowser.Document.Window.DomWindow;
win.execScript(strScript, "Javascript")