Namespace: Wisej.Web

Assembly: Wisej.Framework (3.5.0.0)

Specifies the reason that a form was closed.

public enum CloseReason : Enum

Public Enum CloseReason As [Enum]

Fields

Used By

Namespace: Wisej.Web

Assembly: Wisej.Framework (3.5.0.0)

Represents the method that handles a FormClosed event.

public delegate void FormClosedEventHandler(Object sender, FormClosedEventArgs e)

Public Delegate Sub FormClosedEventHandler(ByVal sender As [Object], ByVal e As FormClosedEventArgs)

Parameters

Fired By

Namespace: Wisej.Web

Assembly: Wisej.Framework (3.5.0.0)

Represents the method that handles a FormClosing event.

public delegate void FormClosingEventHandler(Object sender, FormClosingEventArgs e)

Public Delegate Sub FormClosingEventHandler(ByVal sender As [Object], ByVal e As FormClosingEventArgs)

Parameters

Fired By

Namespace: Wisej.Web

Assembly: Wisej.Framework (3.5.0.0)

Specifies the initial position of a form.

public enum FormStartPosition : Enum

Public Enum FormStartPosition As [Enum]

Fields

Used By

Namespace: Wisej.Web

Assembly: Wisej.Framework (3.5.0.0)

Specifies how a form window is displayed.

Fields

Used By

Namespace: Wisej.Web

Assembly: Wisej.Framework (3.5.0.0)

Represents the container for multiple-document interface (MDI) child forms.

Constructors

MdiClient(owner)

Initializes a new instance of .

Properties

ActiveMdiChild

: Returns the currently active multiple-document interface (MDI) child window.

MdiChildren

Implements

Namespace: Wisej.Web

Assembly: Wisej.Framework (3.5.0.0)

Encapsulates properties related to the tabbed MDI interface.

public class MdiTabProperties : ICloneable

Public Class MdiTabProperties
    Inherits ICloneable

Constructors

MdiTabProperties(owner)

Initializes a new instance of the MdiTabProperties class.

Properties

Alignment

TabAlignment: Returns or sets the area of the control (for example, along the top) where the tabs are aligned. (Default: Top)

AllowUserToMoveTabs

Boolean: Returns or sets whether the user can change the position of a tab button by dragging it. (Default: False)

BackColor

Color: Returns or sets the background color for the control.

BorderStyle: Indicates the border style for the control. (Default: Solid)

Orientation: Returns or sets a value indicating the horizontal or vertical orientation of the TabControl tab pages.

Boolean: Returns or sets whether the menu of the MdiChild form is shown on the tab button. (Default: False)

Boolean: Returns or sets whether the thumbnail page is visible. (Default: True)

TabSizeMode: Returns or sets whether the tab buttons should fill the control's size, or placed in the center, or aligned to the left. (Default: Normal)

Namespace: Wisej.Web

Assembly: Wisej.Framework (3.5.0.0)

• Control

  • ScrollableControl

    • ContainerControl

      • Form

Represents a window or dialog box that makes up an application's user interface.

public class Form : ContainerControl, IWisejWindow

Public Class Form
    Inherits ContainerControl
    Implements IWisejWindow

Constructors

Form()

Default constructor.

Form(onClosed)

Initializes a new instance of the Form class with the specified initial settings.

Form(controls, onClosed)

Initializes a new instance of the Form class with the specified initial settings.

Initializes a new instance of the Form class with the specified initial settings.

Initializes a new instance of the Form class with the specified initial settings.

Initializes a new instance of the Form class with the specified initial settings.

Properties

IButtonControl: Returns or sets the button on the form that is clicked when the user presses the ENTER key. (Default: null)

Assigning the AcceptButton doesn't automatically close the window when the button is pressed. It only assigns the value of the DialogResult property of the form to the value of the DialogResult property of the button. To close the form when the AcceptButton is clicked, you have to call the Close method when the button is pushed.

Boolean: Returns whether the form is the currently active top level window or the active mdi child window.

Form: Returns the currently active form for this application.

Form: Returns the currently active multiple-document interface (MDI) child window.

Boolean: Returns or sets whether the opacity of the form can be adjusted.

String: Sets the appearance key for the theme engine. (Default: null)

Boolean: Automatically closes the form or dialog when the user clicks anywhere on the browser outside of the form. (Default: False)

Boolean: EXPERIMENTAL: Automatically closes the Modal dialog when DialogResult is assigned to a value different than None by code or by a user action, i.e.: AcceptButton click. Since 3.5.6 (Default: False)

You can change the default value across the application using the AutoCloseModalDialogDefault property or related AppContext switch. The default WinForms behavior is to automatically close the modal dialog.

Boolean: EXPERIMENTAL: Default value for the AutoCloseModalDialog property. Since 3.5.6 (Default: False)

The default is false. You can set the value by code or using AppContext switches: AppContext.SetSwitch("FormAutoCloseModalDialog", true);

Boolean: Returns or sets a value that indicates whether the control resizes based on its contents. (Default: False)

AutoSizeMode: Indicates the automatic sizing behavior of the control. (Default: GrowOnly)

AutoValidate: Returns or sets how the control performs validation when the user changes focus to another control.

IButtonControl: Returns or sets the button control that is clicked when the user presses the ESC key. (Default: null)

Assigning the CancelButton doesn't automatically close the window when the button is pressed. It only assigns the value of the DialogResult property of the form to the value of the DialogResult property of the button. To close the form when the CancelButton is clicked, you have to call the Close method when the button is pushed.

Size: Returns or sets the size of the client area of the form.

Boolean: Returns or sets whether the Close button is displayed in the caption bar of the form. (Default: True)

CloseReason: Returns the reason for the form closing.

Boolean: Returns or sets whether a control box is displayed in the caption bar of the form. (Default: True)

DialogResult: Returns or sets the dialog result for the form.

Boolean: Enables or disables merging the MdiParent's menu with the active MdiChild form's menu. (Default: False)

FormBorderStyle: Returns or sets the border style of the form. (Default: Sizable)

Boolean: Returns whether this form is an IsMdiContainer and has any Mdi child form.

Boolean: Returns whether this form has any owned form.

Color: Returns or sets the background color of the title bar and frame of the window.

Color: Returns or sets the text color of the title bar of the window.

Image: Returns or sets the icon (32x32) for the Form.

Image: Returns or sets the large icon (128x128) for the Form.

String: Returns or sets the theme name or URL for the large icon to display for the Form.

String: Returns or sets the theme name or URL for the icon to display for the Form.

Boolean: Returns whether the Form has been closed.

Modal dialogs are reusable and are not disposed automatically when closed. Use this property to check whether a modal dialog has been closed, and use IsDisposed to check if it has been disposed.

Boolean: Returns whether the Form was created as a modal or modeless dialog using ShowDialog.

Boolean: Returns a value indicating whether the form is a multiple-document interface (MDI) child form.

Boolean: Returns or sets whether the form is a container for multiple-document interface (MDI) child forms. (Default: False)

Boolean: Keeps the form always centered in the browser. (Default: False)

Boolean: Keeps the entire form within the browser view preventing the user from dragging the form, even partially, outside of the view. (Default: False)

Boolean: Returns or sets whether the form is resized while the border is being dragged. (Default: False)

Boolean: Returns or sets whether the Maximize button is displayed in the caption bar of the form. (Default: True)

Size: Returns the maximum size the form can be resized to. (Default: {Width=0, Height=0})

Throws:

• ArgumentOutOfRangeException The values of the height or width within the Size object are less than zero.

Form[]: Returns an array of forms that represent the multiple-document interface (MDI) child forms that are parented to this form.

MdiClient: Returns the internal MdiClient component.

Form: Returns or sets the current multiple-document interface (MDI) parent form of this form.

Throws:

• Exception The Form assigned to this property is not marked as an MDI container.

MdiTabProperties: Provides properties for the TabControl object used to display the tabbed MDI interface.

MainMenu: Returns or sets the MainMenu that is displayed in the form. (Default: null)

MainMenu: Returns the merged menu for the form.

Boolean: Returns or sets whether the Minimize button is displayed in the caption bar of the form. (Default: True)

Size: Returns or sets the minimum size the form can be resized to.

Throws:

• ArgumentOutOfRangeException The values of the height or width within the Size object are less than zero.

Boolean: Returns whether this form is displayed modally.

Boolean: Returns or sets whether the form can be moved by dragging.

Double: Returns or sets the opacity level of the form. (Default: 1)

Form[]: Returns an array of Form objects that represent all forms that are owned by this form.

Form: Returns or sets the form that owns this form.

Throws:

• Exception A top-level window cannot have an owner.

Boolean: Returns or sets whether the form is displayed in the Desktop taskbar. (Default: True)

Boolean: Returns or sets a value that shows the modal mask on the client when this form is displayed. (Default: False)

Modal forms - forms opened using ShowDialog - always show the modal mask by default.

Size: Returns or sets the size of the form.

FormStartPosition: Returns or sets the starting position of the form at run time. (Default: DefaultLocation)

String: Returns or sets the title of the Form window. (Default: "")

ComponentToolCollection: Returns the instance of ComponentToolCollection associated with this control.

Boolean: Returns or sets whether to display the form as a top-level window.

Throws:

• Exception A Multiple-document interface (MDI) parent form must be a top-level window.

Boolean: Returns or sets whether the form should be displayed as a topmost form. (Default: False)

FormWindowState: Returns or sets a value that indicates whether form is minimized, maximized, or normal. (Default: Normal)

Methods

Activates the form and gives it focus.

Adds an owned form to this form.

Closes the form.

Computes the location of the specified screen point into client coordinates.

Returns: Point. A Point that represents the converted Point, point , in client coordinates.

Computes the location of the specified client point into screen coordinates.

Returns: Point. A Point that represents the converted Point, point , in screen coordinates.

Forces the control to update the corresponding client widget. When in DesignMode it forces a full redraw of the designer surface for this control and optionally of its children, including the non-client areas such as the caption of forms or panels.

Removes an owned form from this form.

Shows the form to the user.

Forms are disposed immediately when they are closed and cannot be shown again. The optional onclose parameter is an asynchronous callback handler invoked when the form is closed. It is similar to handling the FormClosed event.

form.Show((sender, result) => {
  
  // this code is executed when the form is closed.
  // sender is a reference to the form being closed.
  // result contains the value of form.DialogResult.
});

Throws:

• InvalidOperationException The form being shown is already visible; or the form being shown is not a top-level window; or the form being shown as a dialog box is already a modal form.

Shows the form with the specified owner to the user.

Forms are disposed immediately when they are closed and cannot be shown again. The optional onclose parameter is an asynchronous callback handler invoked when the form is closed. It is similar to handling the FormClosed event.

form.Show((sender, result) => {
  
  // this code is executed when the form is closed.
  // sender is a reference to the form being closed.
  // result contains the value of form.DialogResult.
});

Throws:

• InvalidOperationException The form being shown is already visible; or The form specified in the owner parameter is the same as the form being shown; or the form being shown is disabled; or the form being shown is not a top-level window; or the form being shown as a dialog box is already a modal form.

Shows the form as a modal dialog box. When the onclose is specified, the dialog is modal only in the browser.

Returns: DialogResult. One of the DialogResult values.

When using ShowDialog, the dialog instance is not automatically disposed when the dialog is closed because dialogs are reusable. To make sure that memory is released properly, you must dispose the instance in your code or use the typical using pattern. Dialogs that are closed, but not disposed and not referenced by the application will be disposed by the Garbage Collector when it kicks in.

using (var dialog and new MyDialog())
{
  dialog.ShowDialog();
}

Modal dialogs suspend the code execution on the server side effectively replicating the full modal workflow employed by desktop applications. However, when the optional onclose parameter is specified, the dialog is modal only in the browser and doesn't suspend the server thread. Which is similar to the typical asynchronous modal pattern used in javascript.

dialog.ShowDialog((sender, result) => {
  
  // this code is executed when the dialog is closed.
  // sender is a reference to the dialog being closed.
  // result contains the value of dialog.DialogResult.
  
  // you may dispose it here:
  sender.Dispose();
});

// this code is executed immediately, unlike the real modal workflow.

Throws:

• InvalidOperationException The form being shown is already visible; or the form being shown is disabled; or the form being shown is not a top-level window; or the form being shown as a dialog box is already a modal form.

Shows the form as a modal dialog box with the specified owner. When the onclose is specified, the dialog is modal only in the browser.

Returns: DialogResult. One of the DialogResult values.

When using ShowDialog, the dialog instance is not automatically disposed when the dialog is closed because dialogs are reusable. To make sure that memory is released properly, you must dispose the instance in your code or use the typical using pattern. Dialogs that are closed, but not disposed and not referenced by the application will be disposed by the Garbage Collector when it kicks in.

using (var dialog and new MyDialog())
{
  dialog.ShowDialog();
}

Modal dialogs suspend the code execution on the server side effectively replicating the full modal workflow employed by desktop applications. However, when the optional onclose parameter is specified, the dialog is modal only in the browser and doesn't suspend the server thread. Which is similar to the typical asynchronous modal pattern used in javascript.

dialog.ShowDialog((sender, result) => {
  
  // this code is executed when the dialog is closed.
  // sender is a reference to the dialog being closed.
  // result contains the value of dialog.DialogResult.
  
  // you may dispose it here:
  sender.Dispose();
});

// this code is executed immediately, unlike the real modal workflow.

Throws:

• ArgumentException The form specified in the owner parameter is the same as the form being shown.

• InvalidOperationException The form being shown is already visible; or The form specified in the owner parameter is the same as the form being shown; or the form being shown is disabled; or the form being shown is not a top-level window; or the form being shown as a dialog box is already a modal form.

Asynchronously shows the form as an awaitable modal dialog box.

Returns: Task<DialogResult>. An awaitable Task that contains the DialogResult value returned asynchronous when the user closes the modal dialog.

When using ShowDialog, the dialog instance is not automatically disposed when the dialog is closed because dialogs are reusable. To make sure that memory is released properly, you must dispose the instance in your code or use the typical using pattern. Dialogs that are closed, but not disposed and not referenced by the application will be disposed by the Garbage Collector when it kicks in.

using (var dialog and new MyDialog())
{
    var result = await dialog.ShowDialog();
}

Asynchronous Modal dialogs don't suspend the code execution on the server side but can be "awaited" in "async" methods effectively replicating the full modal workflow employed by desktop applications in an asynchronous environment.

private async void button_Click(object sender, EventArgs e)
{
    var result = await dialog.ShowDialog();

    // this code is executed when the dialog is closed.
    // result contains the value of dialog.DialogResult.

    // you may dispose the dialog here:
    dialog.Dispose();
}

Throws:

• InvalidOperationException The form being shown is already visible; or the form being shown is disabled; or the form being shown is not a top-level window; or the form being shown as a dialog box is already a modal form.

Events

EventHandler Fired when the form is activated in code or by the user.

EventHandler Fired when the form loses focus and is no longer the active form.

FormClosedEventHandler Occurs after the form is closed.

FormClosingEventHandler Occurs before the form is closed.

EventHandler Fired when the Help button is clicked.

EventHandler Fired before a form is displayed for the first time.

EventHandler Fired when the value of the MaximumSize property has changed.

EventHandler Fired when a multiple-document interface (MDI) child form is activated.

ControlEventHandler Fired when a multiple-document interface (MDI) child form is added to the mdi parent.

ControlEventHandler Fired when a multiple-document interface (MDI) child form is removed from the mdi parent.

EventHandler Fired when the value of the MinimumSize property has changed.

EventHandler Fired whenever the form is first displayed.

ToolClickEventHandler Fired when a ComponentTool is clicked.

EventHandler Fired when the value of the WindowStateChanged property has changed.

Inherited By

Implements

Namespace: Wisej.Web

Assembly: Wisej.Framework (3.5.0.0)

Provides data for the event.

Constructors

FormClosedEventArgs(closeReason)

Initializes a new instance of the class.

Properties

CloseReason

: Returns a value that indicates why the form was closed.

Used By

Namespace: Wisej.Web

Assembly: Wisej.Framework (3.5.0.0)

Provides data for the event.

Constructors

FormClosingEventArgs(closeReason, cancel)

Initializes a new instance of the class.

Properties

CloseReason

: Returns a value that indicates why the form is being closed.

Used By

Namespace: Wisej.Web

Assembly: Wisej.Framework (3.5.0.0)

Specifies the border styles for a form.

public enum FormBorderStyle : Enum

Public Enum FormBorderStyle As [Enum]

Fields

Used By