Questions on UI for WinForms Forum

1 answer

326 views

[Solved] Stop selected row change on new row added

Is there a way (ideally a property) to stop the grid from automatically selecting the newest row when one is added to the datasource?

See the example below. When an item is added to the bindinglist, I want to prevent the row selection from occuring. I know I can set a variable before adding the item, and then cancel the row change on the "changing" event. But ideally, I could just turn off the functionality.

It also needs to NOT automatically scroll to it.

Thoughts?

Please note: This behavior does NOT occur on the MS datagrid.

Imports System.ComponentModel

Public Class Form1

Private myList As BindingList(Of MyObject)

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load

myList = New BindingList(Of MyObject)()

myList.Add(New MyObject(1, "Outdoor"))

myList.Add(New MyObject(2, "Hardware"))

myList.Add(New MyObject(3, "Tools"))

myList.Add(New MyObject(4, "Books"))

myList.Add(New MyObject(5, "Appliances"))

AddHandler myList.ListChanged, AddressOf myList_ListChanged

RadGridView1.DataSource = myList

End Sub

Sub myList_ListChanged(ByVal sender As Object, ByVal e As ListChangedEventArgs)

End Sub

Private Sub RadButton1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadButton1.Click

myList.Add(New MyObject(6, "Plants"))

' DO NOT CHANGE SELECTION!

End Sub

Public Class MyObject

Public Sub New(ByVal myInt As Integer, ByVal myString As String)

_myInt = myInt

_myString = myString

End Sub

Private _myInt As Integer

Public Property MyInt() As Integer

Get

Return _myInt

End Get

Set(ByVal value As Integer)

_myInt = value

End Set

End Property

Private _myString As String

Public Property MyString() As String

Get

Return _myString

End Get

Set(ByVal value As String)

_myString = value

End Set

End Property

End Class

GridView

answered on 04 Nov 2011

1 answer

139 views

[Solved] Checkbox / RadioButton check not immediate

I have noticed that checking a checkbox does not immediately update the datasource. It isn't until I click on another control that the databinding occurs.

This seems inconsistent with how the standard winforms controls behave.

What is the most normal way of duplicating the standard behavior?

Buttons, RadioButton, CheckBox, etc

answered on 04 Nov 2011

2 answers

217 views

[Solved] RadTextBoxEditor Doubleclick not firing

Hello All,

I have added a handler to try and capture the double click of an editing cell on a grid - it never reaches the stop statement, the keydown item fires fine. Can anyone give me some pointers?

Private Sub radGridView1_CellEditorInitialized(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.GridViewCellEventArgs) Handles RadGridView1.CellEditorInitialized

Dim tbEditor As RadTextBoxEditor = TryCast(Me.RadGridView1.ActiveEditor, RadTextBoxEditor)

If Not tbEditor Is Nothing Then

If (Not tbSubscribed) Then

tbSubscribed = True

Dim tbElement As RadTextBoxEditorElement = CType(tbEditor.EditorElement, RadTextBoxEditorElement)

tbElement.TextBoxItem.Tag = Me.RadGridView1.Name

AddHandler tbElement.TextBoxItem.KeyDown, AddressOf tbElement_KeyDown

AddHandler tbElement.DoubleClick, AddressOf tbElement_DoubleClick

End If

End Sub

Private Sub tbElement_DoubleClick(ByVal sender As Object, ByVal e As EventArgs)

Stop

End Sub

Private Sub tbElement_KeyDown(ByVal sender As Object, ByVal e As KeyEventArgs)

If e.KeyCode = Keys.F1 Then

Stop

End If

End Sub

GridView

answered on 03 Nov 2011

3 answers

144 views

List of 'missing' events

Hi,

I noticed that the OnKeyPress, OnKeyUp, and OnKeyDown don't 'work' the same as the microsoft text box, it's been documented here in this forum, and there were a few other events that don't work as expected.

Is there a full list of events in this and other controls that I should be wary about when converting all our .net controls to telerik ones?

I'm using version 2011.2.11.831.

Thanks,
Clive

TextBox

answered on 03 Nov 2011

1 answer

514 views

Change font for one column in RadGridView on runtime (VB.net)

Hi
I need to change the font for one column of my RadGridView in runtime. Is this possible?
If Yes, can you help me with the code in VB.NET?
Thanks

GridView

answered on 03 Nov 2011

1 answer

154 views

multi resource scheduler

Hello all,
      I need help in setting up a multi user / resource
scheduler. I am having problems getting help...
                                                      regards,
                                                        Jeff Link

     these two lines of code will not do it alone (VB.NET)

Me.RadScheduler1.GroupType = GroupType.Resource

Me.RadScheduler1.ActiveView.ResourcesPerView = 2

Scheduler and Reminder

answered on 03 Nov 2011

3 answers

192 views

Validating and correcting the text

Hi,

Have a grid that mainly presents start and end time for a workshift.
When I edit this grid, i would like to input '1000' and validate this and correct it to 10:00, or input 130 and validate this and correct it to 01:30. Or 2350 - > 23:50. And if the user inputs 10:20 it should only validate and it should be ok. But if the user inputs 1080, 1667 or 10:98. It should all give an exception while validateing. It should happen when the cursor leaves the cell.

How can this be done most efficiently.

Regards
Svein Thomas

GridView

answered on 03 Nov 2011

14 answers

290 views

custom combobox for editing gridview

I created a custom combobox that I want to use in the grid view during editing. When the user is editing the data I want to allow then to beable to choose from a list of items, enter in new items (like a text box and save when done typing or lost focus) and also allow the user to click on an x next to an item and remove it from the list items. Is this possible? So, is it possible to customize the list itmes to have a image (x) and use a click event on the fire a method to delte the item?

Stephen

GridView

answered on 03 Nov 2011

1 answer

136 views

Object reference is not set

i created an recursive appointment after that i want to extend the time of particular date for i opened that appointment in occurrence mode .
modified the appointment time then When i submitting the appointment i got this exception.

"object reference not set" and my application is terminated.

-Sivaram.

Scheduler and Reminder

answered on 03 Nov 2011

1 answer

181 views

Prevent modification based on certain criteria (aka SelectedValueChanging)

Hi,

I would like to be able to prevent the user to change the value on certain situations but I cannot find an event that would help me do that.

I've found the MultiColumnComboBoxElement.TextChanging event, but that only works when the modification is made with the keyboard. I would need to be able to handle also the modifications made by the mouse, including the mouse wheel.

Any ideas?

Thanks!

MultiColumn ComboBox

answered on 03 Nov 2011