Simple case of winform interaction with html, winform Interaction
This article mainly records how winform interacts with information in html files, that is, loading the html interface in winform to make mutual calls.
1. Create a winform project. To load html in winform, you need a webBrowser control.
2. Create a new HTML page named "“test.htm ".
3. c # code:
// To enable the webpage to interact with winform, set the accessibility of com to true [System. security. permissions. permissionSet (System. security. permissions. securityAction. demand, Name = "FullTrust")] [System. runtime. interopServices. comVisibleAttribute (true)] public void Hello () {MessageBox. show ("OK, html function in calling wf");} private void Form1_Load (object sender, EventArgs e) {this. webBrowser1.ObjectForScripting = this; string path = Application. startupPath + @ "\ test.htm"; // MessageBox. show (path); // this. webBrowser1.Navigate (path); this. webBrowser1.Url = new System. uri (path, System. uriKind. absolute );}
4.html code:
<Html>
5. Result: The following code loads html in winform and calls the information in c # In js.
6. For convenience, the js function in html is called directly in winform. Key points: this. webBrowser1.Document. InvokeScript ("js function name", parameter ");
7. c # code: directly drag a button control to the page.
private void button1_Click(object sender, EventArgs e){ this.webBrowser1.Document.InvokeScript("WfToHtml");}
8. js code:
<Script type = "text/javascript"> function WfToHtml () {alert ("wf calls js functions in html") ;}</script>
9. Results:
For beginners, the content is relatively simple. Prepare to load another swf, haha...
Who uses WINFORM to interact with the WEB?Use webservice
Html form Data InteractionI have a similar example here. I hope it will help you.
<! Doctype html public "-// W3C // dtd html 4.01 Transitional // EN"
"Www.w3.org/TR/html4/loose.dtd">
<HTML>
<HEAD>
<META http-equiv = "Content-Type" content = "text/html; charset = gb2312">
<TITLE> Registration </TITLE>
<SCRIPT language = "JavaScript">
Function changeCity ()
{
Var province = document. myform. selProvince. value;
Var cityList = new Array ();
CityList ['shandong province '] = ['jinan', 'qingdao ', 'zibo', 'zaozhuang ', 'dongying', 'yantai ', 'weifang', 'jining ', 'tai'an ', 'weihai', 'rizhao '];
CityList ['sichuan province '] = ['chengdu', 'mianyang ', 'deyang', 'zigong ', 'neijiang', 'leshan', 'nanchong ', 'ya'an ', 'meishan ', 'garz', 'liangshan', 'luzhou '];
CityList ['hubei province '] = ['wuhan', 'yichang ', 'jingzhou', 'xiangfan ', 'huangshi', 'jingmen ', 'huanggang', 'shiyan ', 'enshi ', 'qianjiang'];
Document. myform. selCity. options. length = 0;
// Obtain the index of the province option. The ID is used here.
Var pIndex = document. myform. selProvince. value;
Var newOption1;
Document. myform. selCity. options. length = 0;
For (var j in cityList [pIndex])
{
NewOption1 = new Option (cityList [pIndex] [j], cityList [pIndex] [j]);
Document. myform. selCity. options. add (new ...... the remaining full text>
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