This documentation is archived and is not being maintained.

HtmlWindow.Confirm Method

Note: This method is new in the .NET Framework version 2.0.

Displays a dialog box with a message and buttons to solicit a yes/no response.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in

public bool Confirm (
	string message
public boolean Confirm (
	String message
public function Confirm (
	message : String
) : boolean



Return Value

true if the user clicked Yes; false if the user clicked No or closed the dialog box.

Confirm displays a modal dialog box; the user will not be able to access the underlying HTML page without first closing this dialog box.

Although Confirm accepts Unicode text as input, the Internet Explorer script prompt will not display non-Latin language text appropriately on Windows 95, Windows 98, Windows ME or Windows NT due to operating system limitations. For more information, see INFO: Internet Explorer Script Prompts and MBCS/Unicode (;en-us;211147).

Copy the following HTML and save it into a form called orderForm.htm:



<FORM name="NewOrderForm">

Select Part Type:

<SELECT name="PartType">





Quantity: <INPUT type="text" name="PartQty" size="2" maxsize="2"><br>


<INPUT type="text" name="PartBuilding" size="2" maxsize="2"> /

<INPUT type="text" name="PartDesk" size="2" maxsize="2"><p>

<INPUT type="submit" value="Transmit Order">




The following code example displays a Confirm dialog box when the user submits NewOrderForm.

HtmlWindow orderWindow;
HtmlElement formElement;

private void LoadOrderForm()
    if (!(webBrowser1.Document == null)) 
        HtmlDocument doc = webBrowser1.Document;
        orderWindow = doc.Window.OpenNew(new Uri("file://C:\\orderForm.htm"), "");

        //!TODO: Perform this in the load event handler!
        // Get order form. 
        HtmlElementCollection elemCollection = doc.All.GetElementsByName("NewOrderForm");
        if (elemCollection.Count == 1) 
            formElement = elemCollection[0];
            //!TODO: Awaiting DCR
            //formElement.AttachEventHandler("onsubmit", new HtmlElementEventHandler(Form_Submit));

private void Form_Submit(object sender, HtmlElementEventArgs e)
    bool doOrder = orderWindow.Confirm("Once you transmit this order, you cannot cancel it. Submit?");
    if (!doOrder)
        //Cancel the submit. 
        e.ReturnValue = false;
        orderWindow.Alert("Submit cancelled.");

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0