Introduction to C ＃ WPF layout control layoutcontrol

Dev Study address

Document address ：https://docs.devexpress.com/

wpf：https://docs.devexpress.com/WPF/7875/wpf-controls

winform：https://docs.devexpress.com/WindowsForms/7874/winforms-controls

asp.NET: https://docs.devexpress.com/AspNet/7873/aspnet-webforms-controls

blazor :https://docs.devexpress.com/Blazor/400725/blazor-components

summary

LayoutControl It's a project container , Arrange these items in a row or column .

Can be LayoutGroup Add container as sub container to LayoutControl.LayoutGroup Containers allow you to put their items side by side （ Vertical or horizontal ） Or arrange as tabs .LayoutGroup It can include other LayoutGroup Object as a child object , Arrange their items in different directions . This allows the creation of non-linear layouts ：

Use LayoutControl The biggest benefit of , It will automatically maintain a consistent layout of child controls . Even if you resize the window 、 Add or remove controls , Or change the font setting of the control , Controls do not overlap .（ If you manually adjust the margin property of the control , Controls may overlap ）.

In addition to consistent layout functions ,LayoutControl It also provides the following functions ：

Use LayoutItem Wrappers are automatically aligned and embedded LayoutControl Control for . Automatically align the labels associated with these controls based on their left edges . For more information , See aligning the contents of layout items .

Resize children and groups with built-in resizers .

Align items in a group or layout control . You can align an item with any edge of its parent control 、 Center or stretch . When the size of the parent changes , This item will adjust its position accordingly . For more information , See in LayoutGroup and LayoutControl Object .

Customize the layout in custom mode . In this mode , The end user can modify the layout of the project by dragging and dropping , And change the alignment of controls in the group . For more information , See custom mode .

Groups can be rendered as tabs or containers GroupBox object （ A container with a title ）.

LayoutControl The elements of

LayoutControl Accept any type of item . However , The following project types are the most typical ：

-. LayoutGroup. It represents a container control , Can be side by side （ In a row or column ） Or display its child controls in the form of tabs . You can use LayoutGroup.View Property specifies the visual style of the layout group ：

LayoutGroupView.GroupBox

according to LayoutGroup, The children in this group are arranged in a column or row . Direction attribute .

In this mode , Group title （LayoutGroup.header） And borders are visible . Besides , You can also use LayoutGroup Enable group folding .

-. LayoutGroupView.Group:

This group appears as a container without appearance , No borders and titles . Same as the previous visual style , The project is based on LayoutGroup Arrange in a column or row . Direction attribute .

-. LayoutGroupView.Tabs:

The group appears as a tabbed Group , Where direct children are represented as tabs . By combining multiple items into a single layout group , And add the group as a child to the tab group , You can display multiple items in a single tab .

To specify a tab title for a child , Please use the following properties . If LayoutGroup Is a child of a tabbed group , Please use the... Of this group LayoutGroup. Title Properties . For other projects , Please use LayoutControl.TabHeader Additional attributes .

LayoutControl The name of the element that will be in the inactive tab in the tab group IsEnabled Property is set to False. After selecting a previously inactive tab ,iEnabled Property values will be restored .

LayoutItem: This is an object that displays the label of the control ：

It also has the function of automatic alignment of controls within and between groups . For more information , See layout items and groups .

Items Arrangement

stay LayoutControl Lieutenant general LayoutGroups As a child, you can realize composite layout . Consider in LayoutControl The following layout of the items arranged in ：

To create the layout shown above , Group items to be arranged in the same direction into the same group . then , Combine these into other groups , wait . To understand how this layout is built , Let's make the group border and title visible ：

ad locum , These project combinations are as follows ：

LayoutControl Arrange groups vertically 1 And groups 5.

The first group is arranged horizontally, the second group and a label group .

The first 2 The group is arranged vertically 1 Xiang and di 3 Group .

The first 3 The group is arranged horizontally 2 Xiang and di 4 Group .

The fourth group arranges two items vertically .

The tab group contains two tabs （ tab 1 And tabs 2）. Each tab contains specific items . for example , Tabs represented by layout groups 1 Arrange items vertically 5 And projects 6.

The fifth group arranges three items horizontally .

The final statement

This article is translated from ：https://docs.devexpress.com/WPF/8147/controls-and-libraries/layout-management/tile-and-layout/layout-and-data-layout-controls/layout-control