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HtmlWindow.Confirm(String) Method

  • Reference

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll

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

public:
 bool Confirm(System::String ^ message);
public bool Confirm (string message);
member this.Confirm : string -> bool
Public Function Confirm (message As String) As Boolean

Parameters

message
String

The text to display to the user.

Returns

Boolean

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

Examples

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

<HTML>
<BODY>
<FORM name="NewOrderForm">
Select Part Type:
<SELECT name="PartType">
  <OPTION>AZ-3700
  <OPTION>AZ-3701
  <OPTION>AZ-3702
</SELECT><br/>
Quantity: <INPUT type="text" name="PartQty" size="2" maxsize="2" /><br/>
Building/Desk:
<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"/>
</FORM>
</BODY>
</HTML>

The following 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.");
    }
}

Dim OrderWindow As HtmlWindow
Dim FormElement As HtmlElement

Private Sub NewOrderButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NewOrderButton.Click
    LoadOrderForm()
End Sub

Private Sub LoadOrderForm()
    If (WebBrowser1.Document IsNot Nothing) Then
        With WebBrowser1.Document
            OrderWindow = .Window.OpenNew(New Uri("file://C:\\orderForm.htm"), "")

            ' !TODO: Perform this in the load event handler!
            ' Get order form. 
            Dim ElemCollection As System.Windows.Forms.HtmlElementCollection = .All.GetElementsByName("NewOrderForm")
            If (ElemCollection.Count = 1) Then
                FormElement = ElemCollection(0)
                ' TODO: Resolve this. 
                'FormElement.AttachEventHandler("onsubmit", New HtmlElementEventHandler(AddressOf Form_Submit))
            End If
        End With

    End If
End Sub

Private Sub Form_Submit(ByVal sender As Object, ByVal e As HtmlElementEventArgs)
    Dim DoOrder As Boolean = OrderWindow.Confirm("Once you transmit this order, you cannot cancel it. Submit?")
    If (Not DoOrder) Then
        ' Cancel the submit. 
        e.ReturnValue = False
        OrderWindow.Alert("Submit cancelled.")
    End If
End Sub

Remarks

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

Applies to

See also