Questions on UI for WinForms Forum

1 answer

148 views

I want to add RadGridView in DocumentWindow

Hi,

I am programatically adding DocumentWindows in RadDock and adding a RadGridView in DocumentWindow but i am getting below error.

unable to cast object type 'Teleriki.WinControls.UI.RadGrdiView' to 'Telerik.WinControls.UI.Docking.RadDock'.

Please suggest any solution for this...

Thanks and Regards,
Simon.

Dock

answered on 26 Aug 2011

5 answers

90 views

Disable the "dateStart" and "dateEnd" fields on the AppointmentEditForm

Hello, i was curious if there is any special way that i need to implement inorder to Disable (.enabled = false) the dateStart and dateEnd fields ont he edit form. i want to disallow the user from editing these fields if the appointment is in the past and settings then everywhere i have tried so far is having no effect. timeStart and timeEnd were successfully disabled using normal methods.

Scheduler and Reminder

answered on 25 Aug 2011

3 answers

145 views

Is is possible implement "Search" function on RadSchedulerNavigator ?

Hi,

Just want check with you guys, is it possible implement "Search" functionon RadSchedulerNavigator ? For example, search by "Subject"

Peter

Scheduler and Reminder

answered on 25 Aug 2011

5 answers

154 views

Drag & Drop issue

E.g: 5 child nodes under a parent node. When try to reorder the child nodes, move 2nd node right above or right below 4th node, both of the actions, target node might be the 4th node based on users mouse behavior. How can we identity user wants to move the 2nd node above or below 4th node?

Treeview

answered on 25 Aug 2011

2 answers

154 views

CausesValidation between Main Form and Child Form

Hi,

I have a problem on the CausesValidation between Main Form and Child Form.
In the Main Form (midChildContainer form), I have a commandbar control with 2 buttons. When those buttons are clicked, a function in Child Form will be involved.

However, I want the validating event in the child form to be triggered when the first button in Main Form is clicked. When, the other button is clicked, the validating event should not be fired.

I tried to set the causesvalidation in CommandBar to False. Then, whatever buttons is clicked, the validating event never fire.
Is there any way to do? Thanks!

The following is the code:

Main Form Designer:

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _

Partial Class FrmMainMenu

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.RadCommandBar1 = New Telerik.WinControls.UI.RadCommandBar()

Me.CommandBarRowElement1 = New Telerik.WinControls.UI.CommandBarRowElement()

Me.CommandBarStripElement1 = New Telerik.WinControls.UI.CommandBarStripElement()

Me.cmdButton = New Telerik.WinControls.UI.CommandBarButton()

Me.cmdButton2 = New Telerik.WinControls.UI.CommandBarButton()

CType(Me.RadCommandBar1, System.ComponentModel.ISupportInitialize).BeginInit()

CType(Me, System.ComponentModel.ISupportInitialize).BeginInit()

Me.SuspendLayout()

'

'RadCommandBar1

'

Me.RadCommandBar1.AutoSize = True

Me.RadCommandBar1.CausesValidation = False

Me.RadCommandBar1.Dock = System.Windows.Forms.DockStyle.Top

Me.RadCommandBar1.Location = New System.Drawing.Point(0, 0)

Me.RadCommandBar1.Name = "RadCommandBar1"

Me.RadCommandBar1.Rows.AddRange(New Telerik.WinControls.UI.CommandBarRowElement() {Me.CommandBarRowElement1})

Me.RadCommandBar1.Size = New System.Drawing.Size(579, 55)

Me.RadCommandBar1.TabIndex = 1

Me.RadCommandBar1.Text = "Without Validation"

'

'CommandBarRowElement1

'

Me.CommandBarRowElement1.DisplayName = Nothing

Me.CommandBarRowElement1.MinSize = New System.Drawing.Size(25, 25)

Me.CommandBarRowElement1.Strips.AddRange(New Telerik.WinControls.UI.CommandBarStripElement() {Me.CommandBarStripElement1})

'

'CommandBarStripElement1

'

Me.CommandBarStripElement1.DisplayName = "CommandBarStripElement1"

Me.CommandBarStripElement1.FloatingForm = Nothing

Me.CommandBarStripElement1.Items.AddRange(New Telerik.WinControls.UI.RadCommandBarBaseItem() {Me.cmdButton, Me.cmdButton2})

Me.CommandBarStripElement1.Name = "CommandBarStripElement1"

Me.CommandBarStripElement1.Text = ""

'

'cmdButton

'

Me.cmdButton.AccessibleDescription = "CommandBarButton1"

Me.cmdButton.AccessibleName = "CommandBarButton1"

Me.cmdButton.CanFocus = False

Me.cmdButton.DisplayName = "Without Validation"

Me.cmdButton.DrawText = True

Me.cmdButton.Image = Nothing

Me.cmdButton.ImageAlignment = System.Drawing.ContentAlignment.BottomRight

Me.cmdButton.KeyTip = "WITHOUT VALIDATION"

Me.cmdButton.Name = "cmdButton"

Me.cmdButton.Text = "Without Validation"

Me.cmdButton.TextImageRelation = System.Windows.Forms.TextImageRelation.TextAboveImage

Me.cmdButton.Visibility = Telerik.WinControls.ElementVisibility.Visible

Me.cmdButton.VisibleInOverflowMenu = True

'

'cmdButton2

'

Me.cmdButton2.AccessibleDescription = "With Validation"

Me.cmdButton2.AccessibleName = "With Validation"

Me.cmdButton2.CanFocus = False

Me.cmdButton2.DisplayName = "CommandBarButton1"

Me.cmdButton2.DrawText = True

Me.cmdButton2.Image = Nothing

Me.cmdButton2.Name = "cmdButton2"

Me.cmdButton2.Text = "With Validation"

Me.cmdButton2.Visibility = Telerik.WinControls.ElementVisibility.Visible

Me.cmdButton2.VisibleInOverflowMenu = True

'

'FrmMainMenu

'

Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)

Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font

Me.ClientSize = New System.Drawing.Size(579, 579)

Me.Controls.Add(Me.RadCommandBar1)

Me.IsMdiContainer = True

Me.Name = "FrmMainMenu"

'

Me.RootElement.ApplyShapeToControl = True

Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen

Me.Text = "FrmMainMenu"

Me.WindowState = System.Windows.Forms.FormWindowState.Maximized

CType(Me.RadCommandBar1, System.ComponentModel.ISupportInitialize).EndInit()

CType(Me, System.ComponentModel.ISupportInitialize).EndInit()

Me.ResumeLayout(False)

Me.PerformLayout()

End Sub

Friend WithEvents RadCommandBar1 As Telerik.WinControls.UI.RadCommandBar

Friend WithEvents CommandBarRowElement1 As Telerik.WinControls.UI.CommandBarRowElement

Friend WithEvents CommandBarStripElement1 As Telerik.WinControls.UI.CommandBarStripElement

Friend WithEvents cmdButton As Telerik.WinControls.UI.CommandBarButton

Friend WithEvents cmdButton2 As Telerik.WinControls.UI.CommandBarButton

End Class

Main Form Code:

Public Class FrmMainMenu

Private frmChild As FrmChild

Private currentForm As Object

Private Sub FrmMainMenu_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

frmChild = New FrmChild

frmChild.Top = 0

frmChild.Left = 0

frmChild.MdiParent = Me

frmChild.Show()

End Sub

Private Sub cmdButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdButton.Click

currentForm = Me.ActiveMdiChild

currentForm.WithoutValidationClick()

End Sub

Private Sub cmdButton2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdButton2.Click

currentForm = Me.ActiveMdiChild

currentForm.WithValidationClick()

End Sub

Private Sub cmdButton2_MouseHover(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdButton2.MouseHover

RadCommandBar1.CausesValidation = True

End Sub

Private Sub cmdButton2_MouseLeave(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdButton2.MouseLeave

RadCommandBar1.CausesValidation = False

End Sub

End Class

Child Form Designer:

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _

Partial Class FrmChild

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.RadTextBox1 = New Telerik.WinControls.UI.RadTextBox()

Me.RadLabel1 = New Telerik.WinControls.UI.RadLabel()

CType(Me.RadTextBox1, System.ComponentModel.ISupportInitialize).BeginInit()

CType(Me.RadLabel1, System.ComponentModel.ISupportInitialize).BeginInit()

CType(Me, System.ComponentModel.ISupportInitialize).BeginInit()

Me.SuspendLayout()

'

'RadTextBox1

'

Me.RadTextBox1.Location = New System.Drawing.Point(13, 36)

Me.RadTextBox1.Name = "RadTextBox1"

Me.RadTextBox1.Size = New System.Drawing.Size(198, 20)

Me.RadTextBox1.TabIndex = 0

Me.RadTextBox1.TabStop = False

Me.RadTextBox1.Text = "123"

'

'RadLabel1

'

Me.RadLabel1.Location = New System.Drawing.Point(13, 12)

Me.RadLabel1.Name = "RadLabel1"

Me.RadLabel1.Size = New System.Drawing.Size(153, 18)

Me.RadLabel1.TabIndex = 1

Me.RadLabel1.Text = "Only ABC is an validate input."

'

'FrmChild

'

Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)

Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font

Me.CausesValidation = False

Me.ClientSize = New System.Drawing.Size(293, 82)

Me.Controls.Add(Me.RadTextBox1)

Me.Controls.Add(Me.RadLabel1)

Me.Name = "FrmChild"

'

Me.RootElement.ApplyShapeToControl = True

Me.StartPosition = System.Windows.Forms.FormStartPosition.Manual

Me.Text = "FrmChild"

CType(Me.RadTextBox1, System.ComponentModel.ISupportInitialize).EndInit()

CType(Me.RadLabel1, System.ComponentModel.ISupportInitialize).EndInit()

CType(Me, System.ComponentModel.ISupportInitialize).EndInit()

Me.ResumeLayout(False)

Me.PerformLayout()

End Sub

Friend WithEvents RadTextBox1 As Telerik.WinControls.UI.RadTextBox

Friend WithEvents RadLabel1 As Telerik.WinControls.UI.RadLabel

End Class

Child Form Code:

Public Class FrmChild

Private oParent As Object

Public Sub WithoutValidationClick()

MessageBox.Show("Without Validation Click from Main Menu.")

End Sub

Public Sub WithValidationClick()

MessageBox.Show("With Validation Click from Main Menu.")

End Sub

Private Sub RadTextBox1_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles RadTextBox1.Validating

If RadTextBox1.Text <> "ABC" Then

MessageBox.Show("Invalid input.")

End If

End Sub

Private Sub FrmChild_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

oParent = Me.MdiParent

End Sub

End Class

Emily

Form

answered on 25 Aug 2011

1 answer

225 views

Pan and Zoom an Image

Is there a RadControl for WinForms that will do this?

When I google on this, I see examples on how to program the default PictureBox control that ships with Visual Studio, but I was wondering if there was an existing RadControl that can already do this, and save myself some development time.

Thanks

General Discussions

answered on 25 Aug 2011

1 answer

243 views

Want to make a single row editable

Hello, I'm trying to create a grid that allows editing when I click a command column button but only for that row, all other rows should stay read-only to reduce human error. Any ideas?

Thanks,
Jason

GridView

answered on 25 Aug 2011

5 answers

133 views

Winforms GridView crashes if one assigns a new list of data to the data source after edit.

I have a grid view, which values can be edited by the user. I want to refresh the content of the grid, if the user changes the value of the cell. So say I have :

1, 2, 3 as the initial state. If the user changes the value 2 to 5, i want the values in the grid to show , 1,5,6. ( this is a new list that's get assigned as data source to the gridview )

My understanding is that in order to refresh the grid. One has to create a new reference of the list and reasign it to the data source.

When this is done in the CellValueChanged event, the gridview crashes, with the following error.

How does one refresh the grid view after a value has changed ?

- Thanks

Steps to get the error :

1. Create a GridView
2. Assign it for data source a list of your favorite object. Strings or what not.
3. Add a handler for the CellValueChanged.
4. On the CellValueChanged handler, asign a new list of strings of your to the grid's data source.
5. Build start. Edit a cell, and hit enter.

Error Message.

at Telerik.WinControls.UI.GridViewEditManager.EndEditCore(Boolean validate, Boolean cancel)
at Telerik.WinControls.UI.GridViewEditManager.EndEdit()
at Telerik.WinControls.UI.RadGridViewElement.EndEdit()
at Telerik.WinControls.UI.GridRowBehavior.ProcessEnterKey(KeyEventArgs keys)
at Telerik.WinControls.UI.GridRowBehavior.ProcessKey(KeyEventArgs keys)
at Telerik.WinControls.UI.BaseGridBehavior.ProcessKey(KeyEventArgs keys)
at Telerik.WinControls.UI.BaseGridBehavior.ProcessKeyDown(KeyEventArgs keys)
at Telerik.WinControls.UI.BaseGridEditor.OnKeyDown(KeyEventArgs keyEventArgs)
at Telerik.WinControls.UI.GridSpinEditor.OnKeyDown(KeyEventArgs e)
at Telerik.WinControls.UI.GridSpinEditor.spinElement_KeyDown(Object sender, KeyEventArgs e)
at Telerik.WinControls.RadItem.OnKeyDown(KeyEventArgs e)
at Telerik.WinControls.UI.RadSpinElement.OnKeyDown(KeyEventArgs e)
at Telerik.WinControls.UI.RadSpinElement.textItem_KeyDown(Object sender, KeyEventArgs e)
at Telerik.WinControls.RadItem.OnKeyDown(KeyEventArgs e)
at Telerik.WinControls.UI.RadTextBoxItem.TextBoxControl_KeyDown(Object sender, KeyEventArgs e)
at System.Windows.Forms.Control.OnKeyDown(KeyEventArgs e)
at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
at System.Windows.Forms.Control.ProcessKeyMessage(Message& m)
at System.Windows.Forms.Control.WmKeyChar(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.TextBoxBase.WndProc(Message& m)
at System.Windows.Forms.TextBox.WndProc(Message& m)
at Telerik.WinControls.UI.HostedTextBoxBase.WndProc(Message& message)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at Watson.ModelingTool.Main() in C:\Development\Watson\GL.Desktop\ModelingTool\ModelingTool.cs:line 45

GridView

answered on 24 Aug 2011

2 answers

208 views

CellEndEdit e.Value is null

Hey at Telerik

I have a problem when binding gridview to a List<Car>.
The Car object contains two objects Engine and CarColor.

If an Engine or CarColor is initialized on the car object the e.Value in the

rgvCars_CellEndEdit event is correctly changed and parsed and object is updated.

If no Engine or CarColor object is initialized on the Car object and i try to set for instance and engine in the combobox, the e.Value in the rgvCars_CellEndEdit event is null and the object is not updated.

How do i set an Engine or CarColor on the Car object if there's no Engine or CarColor initialized ??

I have include an example (Without an assembly) that shows the problem at hand when you try to select for intance an Engine on the Car that doesn't have an Engine object initialzed.

Link to example. http://kort2.lifa.dk/Examples/GridViewCellEndEditIssue.zip

Sincerly Jan

GridView

answered on 24 Aug 2011

1 answer

186 views

ImageScalinSize property on buttons

Hi, I have a button and I have setted up an image that is bigger than the button.
Is there a posibility from ImageScalingSize property to display the image at the same size like the button is?

Also I have attached an image
Thanks

Buttons, RadioButton, CheckBox, etc

answered on 24 Aug 2011