Questions on UI for WPF Forum

0 answers

97 views

Hi guys,
basically I have a class derived from GridViewGroupFooterCell, and I need to replace GridViewGroupFooterCell with the derived one in the GridView. Do you guys have any idea how I can archive this?

Thanks in advance.

-Henry

GridView

asked on 05 Jun 2012

3 answers

89 views

Frozen groupheaders

Is it possible to 'freeze' the groupheader row?
This way the current group would always be visible while (vertically) scrolling the data in the gridview.

GridView

answered on 05 Jun 2012

1 answer

174 views

Gridview Visiblity based on ComboBox value & Passing Observable Collection as Converter Parameter

Hi,

I have a requirement

Requirement 1# : Inside a Hirerchy Template placed 2 Grids where in

1st grid 3 columns where 1 column has Combo Box loaded with Values.

For ex: Football, Disco

If i select Football, 2 grid placed inside Hirechy Template should be visible or else visbility of that grid should be collapsed.

How can i solve this.

Requirement 2#: Can i pass Observable collection as converter parameter

<Radcombobox selecteditem={Binding collection, converter={}} -> to show as like A,B,C (Selected Items as comma separated)

<controls:RadGridView Name="clubsGrid"

ItemsSource="{Binding Clubs}" Grid.Row="0"

AutoGenerateColumns="False" IsReadOnly="True" SelectionMode="Single" DataContext="{StaticResource MyViewModel}">

<controls:RadGridView.ChildTableDefinitions>

<controls:GridViewTableDefinition/>

</controls:RadGridView.ChildTableDefinitions>

<controls:RadGridView.Columns>

<controls:GridViewDataColumn DataMemberBinding="{Binding Name}"

Header="Est."></controls:GridViewDataColumn>

<controls:GridViewDataColumn DataMemberBinding="{Binding Established}"></controls:GridViewDataColumn>

</controls:RadGridView.Columns>

<controls:RadGridView.HierarchyChildTemplate>

<DataTemplate>

<controls:RadGridView Name="playersGrid"

ItemsSource="{Binding Players}"

AutoGenerateColumns="False" EnableRowVirtualization="False" EnableColumnVirtualization="False"

> 

                                        <controls:RadGridView.ChildTableDefinitions> 
                <controls:GridViewTableDefinition/> 
            </controls:RadGridView.ChildTableDefinitions>

<controls:RadGridView.Columns>

<controls:GridViewDataColumn DataMemberBinding="{Binding Name}">

</controls:GridViewDataColumn>

<controls:GridViewDataColumn DataMemberBinding="{Binding SelectedItem.Name}">

<controls:GridViewDataColumn.CellEditTemplate>

<DataTemplate>

<RadControls:RadComboBox ItemsSource="{Binding Hobbies, Mode=OneTime}" SelectedItem="{Binding SelectedItem,Mode=TwoWay}" SelectedValue="Name" DisplayMemberPath="Name" >

</RadControls:RadComboBox>

</DataTemplate>

</controls:GridViewDataColumn.CellEditTemplate>

</controls:GridViewDataColumn

</controls:RadGridView.Columns

> 

                                    
<
 
 
telerik:RadGridView.HierarchyChildTemplate>
 
 
 
 
<HierarchicalDataTemplate>
 


                                    <controls:RadGridView Name="Hobbies" 
                                     ItemsSource="{Binding Hobbies}" 
                                     AutoGenerateColumns="True" EnableRowVirtualization="False" EnableColumnVirtualization="False"/>

</controls:RadGridView

> 

</
 
 
HierarchicalDataTemplate>
 
 
 
 
</telerik:RadGridView.HierarchyChildTemplate>

</DataTemplate>

</controls:RadGridView.HierarchyChildTemplate>

</controls:RadGridView>

GridView

answered on 05 Jun 2012

1 answer

85 views

FilterDialog under grid

I,

in my project I use Telerik V2010.3.1314.35 and with my RadGridView, when I click on the filter icon in a column header, sometime the filter dialog appear behind the grid ?!?

Thank's

GridView

answered on 05 Jun 2012

2 answers

170 views

Custom Dialog Underneath ToolWindows

I have created a custom popup user control. This control covers the entire application with a gray semi-transparent overlay with a message in the middle.

I add the control like this which makes it the last control in the grid and putting it on top of all other objects.

Grid mainGrid = (Grid)App.Current.MainWindow.Content;

mainGrid.Children.Insert(mainGrid.Children.Count, this);

I have a docking control in this grid and as long as everything is docked the overlay works great. However, as soon as I pull one of the RadPanes into a separate ToolWindow that tool window is always on top of my overlay user control. Is there anyway to do an overlay that would be on top of the ToolWindow as well?

Docking

answered on 04 Jun 2012

1 answer

531 views

RadPane not garbage collected when closed

I have a project where I programmatically create and add RadPanes to a RadDocking control. When the user closes the RadPane it doesn't get garbage collected.

I'm using Redgate's ANTS Memory Profiler to confirm this, and I can see RadDocking control maintains an array of EffectiveValueEntrys which stop the GC collecting the RadPane.

I've seen this thread : http://www.telerik.com/community/forums/wpf/docking/why-not-dispose-of-radpanes-memory-leak-issue.aspx and have implemented the solution (RemoveFromParent and e.Handled = true), but this still doesn't solve the problem (it does solve another issue we were having so I still need that code in there).

The RadPane is created

var pane = new RadPane();

var paneGroup = new RadPaneGroup();

paneGroup.Items.Add(pane);

var splitContainer = new RadSplitContainer();

splitContainer.Items.Add(paneGroup);

this.dockingControl.Items.Add(splitContainer);

pane.MakeFloatingDockable();

I've attached a screenshot of the ANTS profiler Retention Graph for the RadPane. I'm unable to attach a zip file containing a sample project which shows the problem (although you'll need to be running a memory profiler to see the bug), as I can only upload (gif, jpg, jpeg or png) but I have it ready to upload if there is an alternative upload facility.

Could you please advise me on how to fix this problem. Is this a known bug, or am I simply creating/destroying the pane incorrectly?

Kind regards,

Rich Keenan

Docking

answered on 04 Jun 2012

1 answer

157 views

Custom Annotation Issue

Hi,

I programmed a custom annotation insertion and, I have an issue when custom annotation's prefix are exported. Here is the fragment of code to make the custom annotation:

Public Class NovoBookMarkRangeStart

Inherits FieldRangeStartBase

Private m_Name As String

Private m_TypeCase As Integer

Private m_BookFormat As String

<XamlSerializable()> _

Public Property BookFormat As String

Get

Return m_BookFormat

End Get

Set(value As String)

m_BookFormat = value

End Set

End Property

<XamlSerializable()> _

Public Property Name() As String

Get

Return m_Name

End Get

Set(value As String)

m_Name = value

End Set

End Property

<XamlSerializable()> _

Public Property TypeCase() As Integer

Get

Return m_TypeCase

End Get

Set(value As Integer)

m_TypeCase = value

End Set

End Property

Public Sub New()

End Sub

Public Sub New(name As String, TypeCase As Integer, Bookformat As String)

Me.TypeCase = TypeCase

Me.Name = name

Me.BookFormat = Bookformat

End Sub

Here is the code to put the annotation in the document :

Private Sub Wpf_NewBookMark(ID As Integer, TypeCase As Integer, BookFormat As String) Handles Wpf.NewBookMark

Dim StartRange As New NovoBookMarkRangeStart(ID.ToString, TypeCase, BookFormat)

Dim EndRange As New NovoBookMarkRangeEnd()

'Caret Position

Dim S As New DocumentPosition(Me.editor.Document.CaretPosition)

Dim E As New DocumentPosition(Me.editor.Document)

EndRange.PairWithStart(StartRange)

'Custom Span

Dim BookMarkSpan As New Span("{" & Id.ToString() & "}")

S.AnchorToCurrentBoxIndex()

editor.InsertInline(StartRange)

editor.InsertInline(BookMarkSpan)

editor.InsertInline(EndRange)

S.RestorePositionFromBoxIndex()

editor.UpdateEditorLayout()

End Sub

So, when I save the document under a .XAML format, the section with the custom annotation does not save the TypeCase value but put the prefix and, the BookFormat prefix is not there at all. On the other hand, the Name prefix is with the good value. Here is a sample fragment :

<t:Section PageMargin="96,96,96,96" PageSize="816,1056">
    <t:Paragraph LineSpacing="1" StyleName="Normal">
      <custom1:NovoBookMarkRangeStart AnnotationID="1" Name="5" TypeCase="0" />
      <t:Span Text="{}{Patient.PostalCode}" />
      <custom1:NovoBookMarkRangeEnd AnnotationID="1" />
    </t:Paragraph>
</t:Section>

So, can you find why the BookFormat prefix and value are not present and, why the the TypeCase value is the wrong one?

Thank a lot,

Patrick

RichTextBox

answered on 04 Jun 2012

1 answer

103 views

Contextual tabs don't resize.

I find that when I decorate a RadRibbonTab with a ContextualGroupName, elements in the tab no longer resize. Is there a known issue with Contextual Tabs that prevents them from resizing as normal RadRibbonTabs do?

RibbonView and RibbonWindow

answered on 04 Jun 2012

1 answer

198 views

RadDataForm field validation via DataAnnotation fields

Hi,

My WPF application uses an SQlite database which exposes is functionality by an OpenAccess ORM Domain Model, and is then wrapped in an MVVM schema. One of the tables in the database is called ValidUsers, I have created a Metadata class called ValidUsersMetadata as per the guidance in the OpenAccess documentation and is shown below:

using System;

using System.Linq;

using System.ComponentModel;

using System.ComponentModel.DataAnnotations;

namespace VisorDataModel

{

[MetadataTypeAttribute(typeof(ValidUser.ValidUserMetadata))]

public partial class ValidUser : IEditableObject

{

internal sealed class ValidUserMetadata

{

public ValidUserMetadata()

{

}

[Required(ErrorMessage = "User ID is required")]

public int UserID

{

get;

set;

}

[Required(ErrorMessage = "User Name is required.")]

[StringLength(6,ErrorMessage="User name must be at least 6 characters")]

public string UserName

{

get;

set;

}

[Required(ErrorMessage = "Password is required.")]

[StringLength(6, ErrorMessage = "Password must be at least 6 characters")]

public string UserPassword

{

get;

set;

}

[Required(ErrorMessage = "User Class is required.")]

public int UserClass

{

get;

set;

}

The base ValidUser definition is in the class VisorDataModel which is generated by the OpenAccess Domain Model wizard.

The rest of the MVVM definitions for ValidUsers are shown below:

using System;

using System.Collections.Generic;

using System.Linq;

namespace VisorDataModel

{

public interface IValidUsersModel

{

IEnumerable<ValidUser> LoadValidUsers();

IEnumerable<UserClass> LoadUserClasses();

ValidUser NewValidUser();

void AddValidUser(ValidUser validUser);

void DeleteValidUser(ValidUser validUser);

void SaveChanges();

}

using System;

using System.Collections.Generic;

using System.Linq;

namespace VisorDataModel

{

/// <summary>

/// Represents a source of ValidUsers

/// </summary>

public class ValidUsersModel : IValidUsersModel

{

private EntitiesModel dbContext = new EntitiesModel();

public IEnumerable<ValidUser> LoadValidUsers()

{

return dbContext.ValidUsers.ToList();

}

public IEnumerable<UserClass> LoadUserClasses()

{

return dbContext.UserClasses.ToList();

}

public ValidUser NewValidUser()

{

ValidUser newValidUser = new ValidUser { UserName = "New User", UserPassword = "New Password", UserClass = 0 };

int newUserId = 0;

try

{

newUserId = (from vu in dbContext.ValidUsers

select (vu.UserID)).Max() +1;

}

catch

{

newUserId = 0;

}

newValidUser.UserID = newUserId;

return newValidUser;

}

public void AddValidUser(ValidUser validUser)

{

dbContext.Add(validUser);

dbContext.SaveChanges();

}

public void DeleteValidUser(ValidUser validUser)

{

dbContext.Delete(validUser);

dbContext.SaveChanges();

}

public void SaveChanges()

{

dbContext.SaveChanges();

}

using System;

using System.Linq;

using System.Collections.ObjectModel;

using System.ComponentModel;

namespace VisorDataModel

{

public class ValidUsersViewModel : INotifyPropertyChanged

{

private readonly IValidUsersModel dataModel;

private ValidUser _selectedValidUser;

private DelegateCommand _addValidUserCommand;

private DelegateCommand _deleteValidUserCommand;

private DelegateCommand _saveChangesCommand;

private ObservableCollection<ValidUser> _validUsers;

private ObservableCollection<UserClass> _userClasses;

public event PropertyChangedEventHandler PropertyChanged;

private ObservableCollection<ValidUser> _originalValidUsers;

#region initialisation

public ValidUsersViewModel()

{

this.dataModel = new ValidUsersModel();

}

#endregion

public ObservableCollection<ValidUser> ValidUsers

{

get

{

if (this._validUsers == null)

{

this._validUsers = new ObservableCollection<ValidUser>();

if (this._originalValidUsers == null)

{

this._originalValidUsers = this._validUsers;

}

LoadValidUsers();

}

return this._validUsers;

}

public ObservableCollection<UserClass> UserClasses

{

get

{

if (this._userClasses == null)

{

this._userClasses = new ObservableCollection<UserClass>();

LoadUserClasses();

}

return this._userClasses;

}

#region SelectValidUser property

public ValidUser SelectedValidUser

{

get

{

return _selectedValidUser;

}

set

{

if (this._selectedValidUser == value)

return;

this._selectedValidUser = value;

this.OnPropertyChanged("SelectedValidUser");

}

#endregion

public DelegateCommand AddValidUserCommand

{

get

{

if (this._addValidUserCommand == null)

this._addValidUserCommand = new DelegateCommand(this.OnAddCommandExecute);

return _addValidUserCommand;

}

public DelegateCommand DeleteValidUserCommand

{

get

{

if (this._deleteValidUserCommand == null)

this._deleteValidUserCommand = new DelegateCommand(this.OnDeleteCommandExecute);

return _deleteValidUserCommand;

}

public DelegateCommand SaveChangesCommand

{

get

{

if (this._saveChangesCommand == null)

this._saveChangesCommand = new DelegateCommand(this.OnSaveCommandExecute);

return _saveChangesCommand;

}

private void LoadValidUsers()

{

this._validUsers.Clear();

foreach (var item in this.dataModel.LoadValidUsers())

{

this._validUsers.Add(item);

}

private void LoadUserClasses()

{

this._userClasses.Clear();

foreach (var item in this.dataModel.LoadUserClasses())

{

this._userClasses.Add(item);

}

private void OnAddCommandExecute(object parameter)

{

ValidUser newValidUser = this.dataModel.NewValidUser();

this.ValidUsers.Add(newValidUser);

this.SelectedValidUser = newValidUser;

this.dataModel.AddValidUser(newValidUser);

}

private void OnDeleteCommandExecute(object parameter)

{

if (this.SelectedValidUser != null)

{

this.dataModel.DeleteValidUser(this.SelectedValidUser);

this.ValidUsers.Remove(this.SelectedValidUser);

}

private void OnSaveCommandExecute(object parameter)

{

this.dataModel.SaveChanges();

}

protected virtual void OnPropertyChanged(string info)

{

if (this.PropertyChanged != null)

this.PropertyChanged(this, new PropertyChangedEventArgs(info));

}

One of the functions of the application is to display/add/delete/edit ValidUser records. This is accomplished by a RadDataGrid and a pop-up RadDataForm. The RadDataForm uses custom fields, one of which is defined as a DataFormComboBoxField.

All of this works fine but I now want to use the DataAnnotations which I have added in the ValidUserMetadata class. So far I have not found how to do this.

Any help gratefully received.

Thanks

DataForm

answered on 04 Jun 2012

2 answers

205 views

Child TabControl within TabControl: child selection not kept

Hello all,

I have a case where a 'parent' tab control contains a 'child' tab control in each of its tabs. So we have something like:

PT1 (parent tab 1)
-> CT1 (child tab 1)
-> CT2
-> CT3
PT2 (parent tab 2)
-> CT4
-> CT5
-> CT6

Say that in Parent Tab 1 (PT1), I select the second child tab (CT2). Then I move to PT2 and select any other child tab. When I return to PT1, I would expect my previous child tab selection (CT2) to be preserved. Instead, the child tab control is 'reset' to no selection.

Is there a property to set so that 'child' user control states such as child controls are preserved when switching between tabs?

My apologies, this question seems awfully complicated for such a simple case... it would be awesome if we could upload some projects to the forum for customer support to try out! :-)

Thanks for your help,

Simon

TabControl

answered on 04 Jun 2012