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Form.Modal Property

Gets a value indicating whether this form is displayed modally.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

public bool Modal { get; }
/** @property */
public boolean get_Modal ()

public function get Modal () : boolean

Property Value

true if the form is displayed modally; otherwise, false.

When a form is displayed modally, no input (keyboard or mouse click) can occur except to objects on the modal form. The program must hide or close a modal form (usually in response to some user action) before input to another form can occur. Forms that are displayed modally are typically used as dialog boxes in an application.

You can use this property to determine whether a form that you have obtained from a method or property has been displayed modally.

To display a form modally use the ShowDialog method.

The following code example uses the Modal property to determine if a form is displayed as a modal form. If it is not the FormBorderStyle and TopLevel properties are changed to make the form a non-top-level form with a tool window border.

private void ShowMyNonModalForm()
{
    Form myForm = new Form();
    myForm.Text = "My Form";
    myForm.SetBounds(10,10,200,200);

    myForm.Show();
    // Determine if the form is modal.
    if(myForm.Modal == false)
    {
        // Change borderstyle and make it not a top level window.
        myForm.FormBorderStyle = FormBorderStyle.FixedToolWindow;
        myForm.TopLevel = false;
    }
}

private void ShowMyNonModalForm()
{
    Form myForm = new Form();
    myForm.set_Text("My Form");
    myForm.SetBounds(10, 10, 200, 200);
    myForm.Show();

    // Determine if the form is modal.
    if (myForm.get_Modal() == false) {
        // Change borderstyle and make it not a top level window.
        myForm.set_FormBorderStyle(get_FormBorderStyle().FixedToolWindow);
        myForm.set_TopLevel(false);
    }
} //ShowMyNonModalForm

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, 1.1, 1.0
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