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2007/9/12 -When I display the main form I get the error: "Invalid parent form. When using DockingMdi or SystemMdi document style, the DockPanel control must be the child ...

2010/12/19 -I am trying that and when i add the forms to the dockpanel i get this error : "Invalid parent form. When using DockingMdi or SystemMdi document ...

2021/2/1 -I have am MDI parent form (FrmMain) that displays an mdi child (FrmSearch) on loading. The parent form has a menustrip at the top

2013/3/13 -"Invalid parent form. When using DockingMdi or SystemMdi document style, the DockPanel control must be the child control of the main MDI ...

2011/6/10 -I use dock panels in MDI child forms. I can't put a DocumentManager control in a MDI child to allow the dock panel to fill the MDI child form.

2020/9/22 -处理方式:将主窗体的IsMdiContainer属性设置为True即可。 分类: C#. 好文要顶 关注我 收藏该文 微信分享.

2012/7/24 -不然在向主窗体中添加标签窗体时,会报异常:Invalid parent form. When using DockingMdi or SystemMdi document style, the DockPanel control must be ...

ドッキング ウィンドウを使用するには、それをドッキングさせるためのパネル (DockPanel) を、親となるフォーム上に配置する必要があります。 コードから. DockPanelの ...

You can set the docked control as an MDI child easily by using the Tabbed document option in the context menu. To enable this option, attach the parent form of ...

2025/5/7 -This walkthrough demonstrates how to use ToolStripPanel controls with an MDI form. The form also supports menu merging with child menus.