HOW TO: Carbrowser Control in Visual C # .NET to post form data (from MSDN)

For Microsoft Visual Basic .NET versions of this article, see

311294.

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Summary

ASPX Visual C # .net reference

Summary This step-by-step guide introduces you how to use Visual C # .NET

The WebBrowser ActiveX control performs form data posted.

Visual C # .NET can be used

WebBrowser ActiveX control, by using the HTTP server (such as Microsoft Internet Information Server (IIS))

POST method to send data.

To perform posts, you can use

Webbrowser control

NaviGate or

NaviGate2 method, where only URLs, postData and headers parameters are used.

About other parameters and

For more information on NaviGate2, please visit the following Microsoft Web site:

NaviGate2 method http://msdn.microsoft.com/library/default.asp?url=/workshop/ Browser / WebBrowser / Reference / Methods / NaviGate2.asp is

Navigation and

Posting Form Data is called to the HTTP server, the URL parameter must specify a valid address, the PostData parameter must contain an array, and the headers parameter must contain a string containing the following HTTP headers:

Content-Type: Application / X-WWW-FORM-URLENCODED This header indicates that the data passed is encoded according to the HTML specification.

Note that the Internet Explorer Script object model has one

Window object, and one in this object

Navigate. this

The NaviGate method only accepts the URL and cannot be used to post data to the web server.

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ASPX To test the following code example, save the following Active Server Pages (.aspx) file to the Navpost.aspx file in a directory on IIS. IIS should regard this directory as a virtual root that has execute permissions for this script.

<%

Cflavor = Request ("Flavor")

CNAME = Request ("FNAME")

%>

Hello, <% = CNAME%>.

One Scoop Of <% = CFLAVOR%> COMING RIGHT UP!

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Visual C # .NET wants to demonstrate in C #

POST method, follow these steps:

Start a Windows application in Visual C # .NET. FORM1 is created by default. Add the following controls to Form1: Object Name Text

-------------------------------------------------- -----------------

Label LBLName First Name

Label LBLFLAVOR FLAVOR

Button cmdsubmit SubmitCombo Box CBOFLAVOR

Text box txtboxname

Click View, and then click Toolbox. Right-click Toolbox to display the Custom Toolbox dialog. On the COM Component tab, click the Select Microsoft Web Browser check box, then click OK. Add a WebBrowser control to the form. AxWebBrowser1 is its default name. Import NameSpace System.Text. The ASCIIEnCoding class provides a way to convert a string into a byte array. Using system.text;

Insert the following code to Form1.cs: Private Void Form1_Load (Object Sender, System.EventArgs E)

{

CBOFLAVOR.Items.Add ("vanilla");

CBOFLAVOR.Items.Add ("chocolate");

CBOFLAVOR.Items.Add ("strawberry");

CBOFLAVOR.SelectedIndex = 0;

}

Private void cmdsubmit_click (Object Sender, System.Eventargs E)

{

Object vPost;

Object vheaders;

String cflavor;

String cparamflavor;

String cparamname;

String cpostdata;

String cseparator;

Object Oempty = ""

Object Ourl = "http:// /navpost.aspx";

Cflavor = cboflavor.selectedItem.toString ();

CParamflavor = "flavor =";

Cseparator = "&";

CParamname = "fname =";

CPostData = CParamname TxtBoxName.Text Cseparator CParamflavor CFlavor;

Vheaders = "Content-Type: Application / X-WWW-FORM-URLENCODED" "/ N" "/ r";

vPost = asciiencoding.ascii.getbytes (cpostdata);

AxWebBrowser1.naviGate2 (Ref Orl, Ref Oempty, Ref Oempty, Ref Vpost, Ref Vheaders);

// or you can use the Navigate Method As Follows

//axwebbrowser1.navigate ("http://

}

Modify the URL in the call to NaviGate2 as needed. Type your name in the name box, select a Flavor, and then click Submit Command Button. The data in the form will be posted to the HTTP server and the response will appear in the browser window you can see.

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Refer to other information, click the article number below to see the article in the Microsoft Knowledge Base: 174923 How To: Use the PostData Parameter In WebBrowser Control

WebBrowser controls and methods, properties, and more information about its public events, please visit the following Microsoft Web site:

Http://msdn.microsoft.com/workshop/browser/webbrowser/reflist_vb.asp For HTML specification for the form content type, visit the following W3C Web site:

Http://www.w3.org/tr/HTML4/INTERACT /FORMS.HTML #H-17.13.4.1 For more information on developing web-based solutions for Microsoft Internet Explorer, please visit the following Microsoft Web site:

Http://msdn.microsoft.com/workshop/entry.asphttp://msdn.microsoft.com/iep.asp?fr=0&sd=msdn/Highlights/iep.asp?fr=0&sd=msdn

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The information in this article applies to:

Microsoft Visual C # .NET (2002) Microsoft Internet Explorer (Programming) 5.5 Microsoft Internet Explorer (programming) 6.0

Recent Updated: 2003-11-4 (2.0) Keywords: Kbhowto KbhowTomaster Kbinfo Kbsample KB313068 KBAUDDEVELOPER