Questions on UI for WinForms Forum

3 answers

230 views

DropDownList and item visibility broken?

Hi, I'm using the latest version of the WinControls package and I'm using trying to hide inactive data on a DropDownList to prevent the user from selecting it but ElementVisibility.Collapsed shows a blank line (as ElementVisibility.Hidden). It is my understanding that the row should not visible nor blank with the first value.

Am i missing something?

private void uxAssignedAt_VisualListItemFormatting(object sender, VisualItemFormattingEventArgs args)

{

var personne = args.VisualItem.Data.DataBoundItem as Personne;

// Reset default value

args.VisualItem.ResetValue(LightVisualElement.VisibilityProperty, ValueResetFlags.Local);

if (personne != null && !personne.IndActive)

{

args.VisualItem.Visibility = ElementVisibility.Collapsed;

}

DropDownList

answered on 07 Nov 2011

3 answers

673 views

Disable Right Click Selection Change

By default the tree view will change selection by clicking on a item with left or right mouse, I need to prevent the selected item from changing when a item is clicked with the right mouse, instead i need to hilight the item and pop a context menu.
Also where do you change the color of the selected background?
Thanks

Treeview

answered on 07 Nov 2011

3 answers

221 views

Winform treeview questions

Hi all, i have questions about treeview in winform. Is it possible to integrate or combine explorer-like treeview to telerik treeview? I mean when the root folder/node is set to desktop directory, then it would auto generate all the childs and other nodes (which is folders/shortcut) inside the desktop.. Another question is how to make drag n drop function that copy the folder/node and not move it to the other treeview?

Sorry if I ask many questions here, I am a lil' bit beginner to this thing and hope you all can guide me. Thanx for your coorperation.

Regards,

Muz

Treeview

answered on 07 Nov 2011

1 answer

182 views

Gridline in gridview

Hello,
I have used the desert theme as my form theme and aqua for my gridview. There are two problems which i have faced during working with this themes. i will be appreciate if you help me with these issues.
1. After finalizing the gridview, the gridlines can not be viewed and the rows can only be distinguished by different colours. how can i apply these gridlines?
2. In the gridview which is seen in run-time, the numbers are placed in the left side of the column and the strings are placed on the right side of the column. is there a way to arrange both of them in the same direction, let's say both in right or left side?

thanks in advance
David Namer

GridView

answered on 07 Nov 2011

6 answers

200 views

Disabled items can be selected by using keyboard.

Hi,

This is regarding the RadDropDownList:

When I diseble a RadListDataItem by setting Enabled to false i can select it by keborard upp and down arrows but it cannot be selected by mouse. I do not want the user to be able to select a disabled item using the keboard (it should be ignored and go to next enabled item)...

I hawe tryed to create this behavior using the SelectedIndexChanging Event whitout any success.

Any suggestions are welcome

//Niklas

ListControl

answered on 07 Nov 2011

1 answer

119 views

Custom Attributes in WinForm Treeview

Hi anyone know if there's an equivalent treeview node custom attributes for winform just like asp.net? Example:
In ASP.NET code behind:
- node.Attributes.Add("NODE_ID", dbRow["NODE_ID"].ToString());

If not, is there similar way of adding custom attributes to the treeview node in winform?

Thanks,

General Discussions

answered on 07 Nov 2011

1 answer

161 views

Format font custom group

When I create a group like this:
             GroupDescriptor GroupDescriptor descriptor = new ("GrupoVencimento");
             descriptor.GroupNames [0]. ListSortDirection.Descending = Direction;
             descriptor.Aggregates.Add ("Sum (Value)");
             this.rgvContasReceberParcela.GroupDescriptors.Add (descriptor);

How do I format the font, size, style, etc.?

thank you

GridView

answered on 07 Nov 2011

1 answer

130 views

Maintain selection after setting datasource

Hi,

I am using the RadTreeView (RTV) control to display a list of IP addresses. The datasource of the RTV is set on form load, with the data source set to a BindingList of a custom class. This all works fine.

The problem happens when I update the BindingList using a standard Timer control, with the selected item in of the RTV de-selecting, thus requiring it to be selected again. I have attempted to store and set the selection, however this still causes momentary blinking of the selecting. I've also tried to SuspendLayout, the ResumeLayout without success.

The above issue also occurs with the hover style, which for 'ControlDefault' theme is a lighter orange colour, with the background colour switching between this and white on refresh of the BindingList.

Please help!

Treeview

answered on 07 Nov 2011

1 answer

278 views

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

116 views

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