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treenode in mdi child

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John Reid
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John Reid asked on 19 Mar 2011, 05:42 PM
Hi - I am sure I am not doing this right but not sure how it is done

I have an mdi parent with a rad ribbon bar on it. When I click a button on the ribbon bar it loads an child form. In the child form I have a rad treeview. But when the form loads the nodes do not show up. I can see the treeview, but the nodes do not populate

 Public Sub New()

        ' This call is required by the designer.
        InitializeComponent()
        AddNodes()

        ' Add any initialization after the InitializeComponent() call.

    End Sub

    Private Sub AddNodes()
        Me.MdiParent = Form1
        Me.RadTreeView1.Parent = Form1
        Dim Node1 As New RadTreeNode("Node1")
        Node1.Tag = 1234
        Node1.BackColor = Color.Blue
        Dim Node2 As New RadTreeNode("Node2")
        Dim Node3 As New RadTreeNode("Node3")
        Dim Node4 As New RadTreeNode("Node4")
        RadTreeView1.Nodes.Add(Node1)
        RadTreeView1.Nodes.Add(Node2)
        Node1.Nodes.Add(Node3)
        Node2.Nodes.Add(Node4)
    End Sub

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Richard Slade
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answered on 20 Mar 2011, 10:22 PM
Hi John,

Please can you move your code to populate the nodes to the FormLoad event, rather than in the constructor. I believe this is an issue which I have already reported to Telerik a couple of days ago. Please let me know if this helps
regards,
Richard
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John Reid
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answered on 21 Mar 2011, 02:42 PM
Thanks Richard -

Unfortunately it did not work for me. Here is my child form load

 Private Sub Operators_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Me.MdiParent = Form1
        Me.RadTreeView1.Parent = Form1
        Dim Node1 As New RadTreeNode("Node1")
        Node1.Tag = 1234
        Node1.BackColor = Color.Blue
        Dim Node2 As New RadTreeNode("Node2")
        Dim Node3 As New RadTreeNode("Node3")
        Dim Node4 As New RadTreeNode("Node4")
        RadTreeView1.Nodes.Add(Node1)
        RadTreeView1.Nodes.Add(Node2)
        Node1.Nodes.Add(Node3)
        Node2.Nodes.Add(Node4)
    End Sub
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Richard Slade
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answered on 21 Mar 2011, 03:01 PM
Hello John,

Here is an example for you. the RadRibbonForm1 is the main form, and RadForm1 is the child form.

RadRibbonForm1 Designer
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class RadRibbonForm1
    Inherits Telerik.WinControls.UI.RadRibbonForm
  
    'Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        Try
            If disposing AndAlso components IsNot Nothing Then
                components.Dispose()
            End If
        Finally
            MyBase.Dispose(disposing)
        End Try
    End Sub
  
    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer
  
    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Dim resources As System.ComponentModel.ComponentResourceManager = New System.ComponentModel.ComponentResourceManager(GetType(RadRibbonForm1))
        Me.RadRibbonBar1 = New Telerik.WinControls.UI.RadRibbonBar()
        Me.RadStatusStrip1 = New Telerik.WinControls.UI.RadStatusStrip()
        Me.RibbonTab1 = New Telerik.WinControls.UI.RibbonTab()
        Me.RadRibbonBarGroup1 = New Telerik.WinControls.UI.RadRibbonBarGroup()
        Me.RadButtonElement1 = New Telerik.WinControls.UI.RadButtonElement()
        CType(Me.RadRibbonBar1, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.RadStatusStrip1, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'RadRibbonBar1
        '
        Me.RadRibbonBar1.AutoSize = True
        Me.RadRibbonBar1.CommandTabs.AddRange(New Telerik.WinControls.RadItem() {Me.RibbonTab1})
        Me.RadRibbonBar1.Dock = System.Windows.Forms.DockStyle.Top
        Me.RadRibbonBar1.EnableKeyMap = True
        '
        '
        '
        Me.RadRibbonBar1.ExitButton.AccessibleDescription = "Exit"
        Me.RadRibbonBar1.ExitButton.AccessibleName = "Exit"
        '
        '
        '
        Me.RadRibbonBar1.ExitButton.ButtonElement.AccessibleDescription = "Exit"
        Me.RadRibbonBar1.ExitButton.ButtonElement.AccessibleName = "Exit"
        Me.RadRibbonBar1.ExitButton.ButtonElement.Class = "RadMenuButtonElement"
        Me.RadRibbonBar1.ExitButton.ButtonElement.TextImageRelation = System.Windows.Forms.TextImageRelation.ImageBeforeText
        Me.RadRibbonBar1.ExitButton.Text = "Exit"
        Me.RadRibbonBar1.Location = New System.Drawing.Point(0, 0)
        Me.RadRibbonBar1.Name = "RadRibbonBar1"
        '
        '
        '
        Me.RadRibbonBar1.OptionsButton.AccessibleDescription = "Options"
        Me.RadRibbonBar1.OptionsButton.AccessibleName = "Options"
        '
        '
        '
        Me.RadRibbonBar1.OptionsButton.ButtonElement.AccessibleDescription = "Options"
        Me.RadRibbonBar1.OptionsButton.ButtonElement.AccessibleName = "Options"
        Me.RadRibbonBar1.OptionsButton.ButtonElement.Class = "RadMenuButtonElement"
        Me.RadRibbonBar1.OptionsButton.ButtonElement.TextImageRelation = System.Windows.Forms.TextImageRelation.ImageBeforeText
        Me.RadRibbonBar1.OptionsButton.Text = "Options"
        '
        '
        '
        Me.RadRibbonBar1.RootElement.AutoSizeMode = Telerik.WinControls.RadAutoSizeMode.WrapAroundChildren
        Me.RadRibbonBar1.Size = New System.Drawing.Size(458, 144)
        Me.RadRibbonBar1.StartButtonImage = CType(resources.GetObject("RadRibbonBar1.StartButtonImage"), System.Drawing.Image)
        Me.RadRibbonBar1.TabIndex = 0
        Me.RadRibbonBar1.Text = "RadRibbonForm1"
        '
        'RadStatusStrip1
        '
        Me.RadStatusStrip1.AutoSize = True
        Me.RadStatusStrip1.LayoutStyle = Telerik.WinControls.UI.RadStatusBarLayoutStyle.Stack
        Me.RadStatusStrip1.Location = New System.Drawing.Point(0, 409)
        Me.RadStatusStrip1.Name = "RadStatusStrip1"
        Me.RadStatusStrip1.Size = New System.Drawing.Size(458, 26)
        Me.RadStatusStrip1.SizingGrip = False
        Me.RadStatusStrip1.TabIndex = 1
        Me.RadStatusStrip1.Text = "RadStatusStrip1"
        '
        'RibbonTab1
        '
        Me.RibbonTab1.AccessibleDescription = "Tab 1"
        Me.RibbonTab1.AccessibleName = "Tab 1"
        Me.RibbonTab1.Alignment = System.Drawing.ContentAlignment.BottomLeft
        '
        'RibbonTab1.ContentPanel
        '
        Me.RibbonTab1.ContentPanel.BackColor = System.Drawing.SystemColors.ControlLightLight
        Me.RibbonTab1.ContentPanel.CausesValidation = True
        Me.RibbonTab1.ContentPanel.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.RibbonTab1.ContentPanel.ForeColor = System.Drawing.SystemColors.ControlText
        Me.RibbonTab1.ContentPanel.Location = New System.Drawing.Point(0, 0)
        Me.RibbonTab1.ContentPanel.Size = New System.Drawing.Size(200, 100)
        Me.RibbonTab1.IsSelected = True
        Me.RibbonTab1.Items.AddRange(New Telerik.WinControls.RadItem() {Me.RadRibbonBarGroup1})
        Me.RibbonTab1.Name = "RibbonTab1"
        Me.RibbonTab1.StretchHorizontally = False
        Me.RibbonTab1.Text = "Tab 1"
        Me.RibbonTab1.Visibility = Telerik.WinControls.ElementVisibility.Visible
        '
        'RadRibbonBarGroup1
        '
        Me.RadRibbonBarGroup1.AccessibleDescription = "group 1"
        Me.RadRibbonBarGroup1.AccessibleName = "group 1"
        Me.RadRibbonBarGroup1.Items.AddRange(New Telerik.WinControls.RadItem() {Me.RadButtonElement1})
        Me.RadRibbonBarGroup1.Name = "RadRibbonBarGroup1"
        Me.RadRibbonBarGroup1.Text = "group 1"
        Me.RadRibbonBarGroup1.Visibility = Telerik.WinControls.ElementVisibility.Visible
        '
        'RadButtonElement1
        '
        Me.RadButtonElement1.AccessibleDescription = "Click Me"
        Me.RadButtonElement1.AccessibleName = "Click Me"
        Me.RadButtonElement1.Class = "RibbonBarButtonElement"
        Me.RadButtonElement1.Name = "RadButtonElement1"
        Me.RadButtonElement1.Text = "Click Me"
        Me.RadButtonElement1.Visibility = Telerik.WinControls.ElementVisibility.Visible
        '
        'RadRibbonForm1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(458, 435)
        Me.Controls.Add(Me.RadStatusStrip1)
        Me.Controls.Add(Me.RadRibbonBar1)
        Me.IsMdiContainer = True
        Me.Name = "RadRibbonForm1"
        '
        '
        '
        Me.RootElement.ApplyShapeToControl = True
        Me.Text = "RadRibbonForm1"
        CType(Me.RadRibbonBar1, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.RadStatusStrip1, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)
        Me.PerformLayout()
  
    End Sub
    Friend WithEvents RadRibbonBar1 As Telerik.WinControls.UI.RadRibbonBar
    Friend WithEvents RadStatusStrip1 As Telerik.WinControls.UI.RadStatusStrip
    Friend WithEvents RibbonTab1 As Telerik.WinControls.UI.RibbonTab
    Friend WithEvents RadRibbonBarGroup1 As Telerik.WinControls.UI.RadRibbonBarGroup
    Friend WithEvents RadButtonElement1 As Telerik.WinControls.UI.RadButtonElement
  
End Class

RadRibbonForm1.vb
Public Class RadRibbonForm1
  
    Private Sub RadButtonElement1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadButtonElement1.Click
        Dim form As New RadForm1()
        form.MdiParent = Me
        form.Show()
    End Sub
End Class


RadForm1 Designer
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class RadForm1
    Inherits Telerik.WinControls.UI.RadForm
  
    'Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        Try
            If disposing AndAlso components IsNot Nothing Then
                components.Dispose()
            End If
        Finally
            MyBase.Dispose(disposing)
        End Try
    End Sub
  
    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer
  
    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.RadTreeView1 = New Telerik.WinControls.UI.RadTreeView()
        CType(Me.RadTreeView1, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'RadTreeView1
        '
        Me.RadTreeView1.Dock = System.Windows.Forms.DockStyle.Fill
        Me.RadTreeView1.Location = New System.Drawing.Point(0, 0)
        Me.RadTreeView1.Name = "RadTreeView1"
        Me.RadTreeView1.Size = New System.Drawing.Size(252, 273)
        Me.RadTreeView1.TabIndex = 0
        Me.RadTreeView1.Text = "RadTreeView1"
        '
        'RadForm1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(252, 273)
        Me.Controls.Add(Me.RadTreeView1)
        Me.Name = "RadForm1"
        '
        '
        '
        Me.RootElement.ApplyShapeToControl = True
        Me.Text = "RadForm1"
        CType(Me.RadTreeView1, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)
  
    End Sub
    Friend WithEvents RadTreeView1 As Telerik.WinControls.UI.RadTreeView
End Class

RadForm1.vb
Imports Telerik.WinControls.UI
  
Public Class RadForm1
  
    Private Sub RadForm1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim Node1 As New RadTreeNode("Node1")
        Node1.Tag = 1234
        Node1.BackColor = Color.Blue
        Dim Node2 As New RadTreeNode("Node2")
        Dim Node3 As New RadTreeNode("Node3")
        Dim Node4 As New RadTreeNode("Node4")
        RadTreeView1.Nodes.Add(Node1)
        RadTreeView1.Nodes.Add(Node2)
        Node1.Nodes.Add(Node3)
        Node2.Nodes.Add(Node4)
    End Sub
End Class

Hope that helps, but please let me know if you have any questions
Richard
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Treeview
Asked by
John Reid
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Richard Slade
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John Reid
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