I'm using RadDock for MDI container.
When I get active child window from RadDock.DocumentManager.ActiveDocument, can not convert RadForm from it.
I don't know how to convert RadForm from DockWindow.
Please, show me a good example.
When I get active child window from RadDock.DocumentManager.ActiveDocument, can not convert RadForm from it.
I don't know how to convert RadForm from DockWindow.
Please, show me a good example.
12 Answers, 1 is accepted
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Emanuel Varga
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answered on 11 Oct 2010, 01:56 PM
Hello Jaehong,
To get the active MDI Child form from the ActiveDocument you can use:
C#:
VB:
If you need any more help you can check out the documentation for RadDock here and an article about Automatic MDI Form Handling in RadDock here.
Hope this helps, if you have any other questions or comments, please let me know,
Best Regards,
Emanuel Varga
To get the active MDI Child form from the ActiveDocument you can use:
C#:
var activeForm = ((Telerik.WinControls.UI.Docking.HostWindow)(radDock1.DocumentManager.ActiveDocument)).MdiChild;Dim activeForm = DirectCast(radDock1.DocumentManager.ActiveDocument, Telerik.WinControls.UI.Docking.HostWindow).MdiChildIf you need any more help you can check out the documentation for RadDock here and an article about Automatic MDI Form Handling in RadDock here.
Hope this helps, if you have any other questions or comments, please let me know,
Best Regards,
Emanuel Varga
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Richard Slade
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answered on 11 Oct 2010, 02:01 PM
Hi,
You don't have to go through the DocumentManager to get that information. this example shows setting an active form, and then finding out what the name is:
(EDIT: Oops, sorry Emanuel - I had the reply screen opened when you already replied)
hope that helps
Richard
You don't have to go through the DocumentManager to get that information. this example shows setting an active form, and then finding out what the name is:
Private Sub Form_Shown(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Shown Dim form2 As New RadForm2() form2.MdiParent = Me form2.Show() Me.RadDock1.ActivateMdiChild(form2) MessageBox.Show(Me.RadDock1.ActiveWindow.FindForm().Name)End Sub(EDIT: Oops, sorry Emanuel - I had the reply screen opened when you already replied)
hope that helps
Richard
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Emanuel Varga
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answered on 11 Oct 2010, 02:23 PM
Hello Richard, Jaehong,
I have to contradict you on this, if you call radDock1.ActiveWindow.FindForm() it will return the parent form, please see the following example:
If you have any other questions or comments, please let me know,
Best Regards,
Emanuel Varga
I have to contradict you on this, if you call radDock1.ActiveWindow.FindForm() it will return the parent form, please see the following example:
Imports SystemImports System.Windows.FormsImports Telerik.WinControls.UIImports Telerik.WinControls.UI.DockingPartial Public Class Form1 Inherits Form Private WithEvents radDock1 As New RadDock() Private WithEvents CreateFormButton As New RadButton Private WithEvents GetActiveFormButton As New RadButton Public Sub New() InitializeComponent() End Sub Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Me.IsMdiContainer = True radDock1.AutoDetectMdiChildren = True Me.radDock1.MdiChildrenDockType = Telerik.WinControls.UI.Docking.DockType.Document radDock1.Dock = DockStyle.Fill Me.Controls.Add(radDock1) CreateFormButton.Text = "Create Form" CreateFormButton.Dock = DockStyle.Bottom Me.Controls.Add(CreateFormButton) GetActiveFormButton.Text = "Get Active Form" GetActiveFormButton.Dock = DockStyle.Bottom Me.Controls.Add(GetActiveFormButton) End Sub Private Sub getActiveFormButton_Click(ByVal sender As Object, ByVal e As EventArgs) Handles GetActiveFormButton.Click Dim activeForm = DirectCast(radDock1.DocumentManager.ActiveDocument, Telerik.WinControls.UI.Docking.HostWindow).MdiChild Dim form = radDock1.ActiveWindow.FindForm() If (Not activeForm.Equals(form)) Then MessageBox.Show("Child form is: " + activeForm.Name+ " Parent form is: "+form.Name) End If End Sub Private Sub button_Click(ByVal sender As Object, ByVal e As EventArgs) Handles CreateFormButton.Click Dim form = New ChildForm() form.Name = "ChildForm " + radDock1.DockWindows.Count.ToString form.Text = "ChildForm " + radDock1.DockWindows.Count.ToString form.MdiParent = Me radDock1.ActivateMdiChild(form) form.Show() End SubEnd ClassPublic Class ChildForm Inherits Form Public Sub New() InitializeComponent() End Sub ''' <summary> ''' Required designer variable. ''' </summary> Private components As System.ComponentModel.IContainer ''' <summary> ''' Clean up any resources being used. ''' </summary> ''' <param name="disposing">true if managed resources should be disposed; otherwise, false.</param> Protected Overrides Sub Dispose(ByVal disposing As Boolean) If disposing AndAlso (components IsNot Nothing) Then components.Dispose() End If MyBase.Dispose(disposing) End Sub#Region "Windows Form Designer generated code" ''' <summary> ''' Required method for Designer support - do not modify ''' the contents of this method with the code editor. ''' </summary> Private Sub InitializeComponent() Me.components = New System.ComponentModel.Container() Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font Me.Text = "Form1" End Sub#End RegionEnd ClassIf you have any other questions or comments, please let me know,
Best Regards,
Emanuel Varga
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Richard Slade
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answered on 11 Oct 2010, 02:43 PM
Hi Emanuel,
How embarrassing. My bad.
Thanks
Richard
How embarrassing. My bad.
Thanks
Richard
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Emanuel Varga
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answered on 11 Oct 2010, 02:46 PM
Hello Richard,
Come on, don't worry, we all make mistakes and grow from them, in one way it would have been more logical like this, but at the moment this is not the actual behavior of the RadDock.
Best Regards,
Emanuel Varga
Come on, don't worry, we all make mistakes and grow from them, in one way it would have been more logical like this, but at the moment this is not the actual behavior of the RadDock.
Best Regards,
Emanuel Varga
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Richard Slade
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answered on 11 Oct 2010, 02:49 PM
Hi Emanuel,
:o)
You're right. It would make sense. There are a few method/property names I would like to see changed and added. A direct property to the active form is now another of those :o)
All the best
Rich
:o)
You're right. It would make sense. There are a few method/property names I would like to see changed and added. A direct property to the active form is now another of those :o)
All the best
Rich
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Cesar
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answered on 31 Aug 2019, 11:45 PM
I tried this: Dim activeForm = DirectCast(radDock1.DocumentManager.ActiveDocument, Telerik.WinControls.UI.Docking.HostWindow).MdiChild
and it shows me this error: Cannot Convert an object type 'Telerik.WinControls.UI.Docking.DocumentWindow' to 'Telerik.WinControls.UI.Docking.HostWindow'.
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Hello, Cesar,
Following the provided code snippet, I have prepared a sample project for your reference. It is seems to work as expected on my end. Please refer to the attached sample project demonstrating how it works. Is there any difference with the code in your project?
I am looking forward to your reply.
Kind regards,
the Telerik team
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Cesar
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answered on 03 Sep 2019, 04:49 PM
Private Function FormaActive() As Object
Dim activeForm = DirectCast(docMainMenu.DocumentManager.ActiveDocument, Telerik.WinControls.UI.Docking.HostWindow).MdiChild
Return activeForm
End Function
This is the code that I have, but it is returning the error I described before.
0
Hello, Cesar,
I have used the same code in my sample project with the latest version of the Telerik UI for WinForms suite. Is the issue reproducible in the sample project that was provided in my previous reply? Could you please specify what is the version you are using on your end since I suppose that it is not 2019.2.618?
I am looking forward to your reply.
I have used the same code in my sample project with the latest version of the Telerik UI for WinForms suite. Is the issue reproducible in the sample project that was provided in my previous reply? Could you please specify what is the version you are using on your end since I suppose that it is not 2019.2.618?
I am looking forward to your reply.
Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
Get quickly onboarded and successful with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.
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Cesar
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answered on 04 Sep 2019, 03:56 PM
I couldn't open the code sample project because I am using 2016.3.1024.40 version.
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Hello, Cesar,
In order to run the application, it is necessary to use the references from the version you have installed on your machine. You can remove all references and add them anew by using the DLLs from your installation. Delete the license.licx file. After that, you should rebuild your project, close Visual Studio and open it again to make sure that no references are kept in the memory by Visual Studio.
Then, you are expected to run the application without any issues. I have already tested it on my end and it seems to work as expected.
I hope this information helps.
In order to run the application, it is necessary to use the references from the version you have installed on your machine. You can remove all references and add them anew by using the DLLs from your installation. Delete the license.licx file. After that, you should rebuild your project, close Visual Studio and open it again to make sure that no references are kept in the memory by Visual Studio.
Then, you are expected to run the application without any issues. I have already tested it on my end and it seems to work as expected.
I hope this information helps.
Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
Get quickly onboarded and successful with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.