Questions on UI for WPF Forum

1 answer

83 views

How to add TileViewItems Count dynamically from xaml

Hi,

I need to bind the tileviewItems count dynamically from xaml.
I mean same times i need to show only one item and some time up to 10 items.

Can you Please help me.....
i was gone through the wpf examples but i can't get

SimpleItem.Generate(50);

what is simpleItem there.
and also .generte property also.

Help me plzzzzzzzzz

thanks in advance...

TileView

answered on 13 Jul 2011

2 answers

112 views

Column Reordering called multiple times

Our testing team reported that on occasion column reordering by drag-and-drop resulted in other columns moving. Since we do not implement any custom reordering or drag-and-drop functionality in the grid, I could not figure out why this was happening. Therefore, I added event handlers for ColumnReordering and ColumnReordered. What I discovered was that sometimes the events were being called multiple times for a single drag-drop operation on a column. This was happening in a somewhat random pattern. I could drag a column to a new position, and it would work ok with the events only called once, then I would drag another column, and three columns would move to new positions, with the event called for each move.

Right now, we are using version 2011.1.419.40. Are there any known issues with column reordering that were fixed?

Thanks for your help.

GridView

answered on 13 Jul 2011

1 answer

136 views

Filtering TreeView

Hello,
I am trying to implement a filter to treeview items based on a textbox value used as a search string. I figured I could evalute the FullPath property of a treeviewitem to insure all parent/children were included however the FullPath property seems to be coming across as Empty for me. Is there something I am missing? Here is my code:

Private Function NameFilter(ByVal item As RadTreeViewItem) As Boolean

If item.HasItems Then item.Items.Filter = New Predicate(Of Object)(AddressOf NameFilter)

Return item.FullPath.Contains(txtSearchList.Text)

End Function

TreeView

answered on 13 Jul 2011

1 answer

129 views

RadGridView Grouping issues #2

On a RadGridView with grouping, if you select the last row and hit the keydown a few times, the application appears to "freeze" up for 1-2 minutes. It eventually comes back to life, but appears to be frozen. Only seems to happen if you try to keydown past the last row in the grid. Any help would be appreciated. I should add that this behavior appears on a 64-bit Windows 7 OS. Another developer with 32-bit WIndows 7 does NOT have this issue. Thanks!

XAML:

<tel:RadGridView x:Name="ListsGV" Grid.Row="2" ItemsSource="{Binding EditFormViewModelCollection}"

IsReadOnly="True" SelectedItem="{Binding CurrentEditFormViewModel}"

PreviewMouseDoubleClick="gridView_PreviewMouseDoubleClick"

HeaderRowStyle="{StaticResource HeaderStyle}"

CanUserSortColumns="False">

<prism:CommandBehaviorCollection.Behaviors>

<prism:BehaviorBinding Event="MouseDoubleClick" Command="{Binding TableSelectedDoubleClickCommand}" CommandParameter="{Binding ElementName=ListsGV, Path=CurrentItem}" />

</prism:CommandBehaviorCollection.Behaviors>

<tel:RadGridView.GroupDescriptors>

<tel:GroupDescriptor Member="CurrentList.SystemModule" />

</tel:RadGridView.GroupDescriptors>

<tel:RadGridView.GroupHeaderTemplate>

<DataTemplate>

<TextBlock Text="{Binding Header.Description}" Margin="1,0,0,0" />

</DataTemplate>

</tel:RadGridView.GroupHeaderTemplate>

<tel:RadGridView.Columns>

<tel:GridViewDataColumn Header="Description" DataMemberBinding="{Binding CurrentList.Description}"

HeaderCellStyle="{StaticResource HeaderCell}" MinWidth="300" />

<tel:GridViewDataColumn Header="Shared Operations" DataMemberBinding="{Binding CurrentList.SharedOperation}"

HeaderCellStyle="{StaticResource HeaderCell}" Width="*"/>

</tel:RadGridView.Columns>

</tel:RadGridView>

Tom

GridView

answered on 13 Jul 2011

2 answers

155 views

Bound header wrapping issue

I'm having an issue with column header wrapping due to my headers being bound to the DisplayName attribute of my properties.

I have a Property in my view model, using the DisplayName attribute:

[DisplayName("Component Item Identifier")]

public String ComponentItem

{

get { return componentItem; }

set

{ ... }

}

I can make that display in the header using:

<telerikGrid:GridViewDataColumn UniqueName="ComponentItem"

DataMemberBinding="{Binding Path=ComponentItem}"

Header="{Binding Path=ComponentItem.DisplayName}" >

</telerikGrid:GridViewDataColumn>

However, I need to make the header column wrap the text. The method I've found in these forums is via using a TextBlock as the header UI element, and I can make that work without the bindings:

<telerikGrid:GridViewDataColumn UniqueName="ComponentItem"

DataMemberBinding="{Binding Path=ComponentItem}">

<telerikGrid:GridViewDataColumn.Header>

<Grid>

<TextBlock Text="MY LONG TEXT FOR TESTING WRAPPING" TextWrapping="Wrap"/>

</Grid>

</telerikGrid:GridViewDataColumn.Header>

</telerikGrid:GridViewDataColumn>

But, the problem comes when I try to bind that TextBlock to my DisplayName, as follows, the header ends up blank:

<telerikGrid:GridViewDataColumn UniqueName="ComponentItem"

DataMemberBinding="{Binding Path=ComponentItem}">

<telerikGrid:GridViewDataColumn.Header>

<Grid>

<TextBlock Text="{Binding Path=ComponentItem.DisplayName}" TextWrapping="Wrap"/>

</Grid>

</telerikGrid:GridViewDataColumn.Header>

</telerikGrid:GridViewDataColumn>

Am I binding incorrectly in this code? Or is this just not supported in this structure?

Sincerely,
Russell.

GridView

answered on 13 Jul 2011

1 answer

75 views

QueriableCollectionView Remove() method

Hello,
I am trying to use the QueriableCollectionView class for DataGrid databinding.
I have the folowing code on window loaded event:

private QueryableCollectionView _qcv;
private void WindowLoaded(object sender, RoutedEventArgs e)
{
_qcv = new QueryableCollectionView(_entities.Countries);
radGridView1.ItemsSource = _qcv;
radDataForm1.ItemsSource = _qcv;
}

then:

private void ButtonDeleteClick(object sender, RoutedEventArgs e)
{
Country c = _qcv.CurrentItem as Country;
_qcv.Remove(c);
}

Can you tell me please why _qcv.Count remains the same? The item is not deleted? What am I doing wrong?Am i missing something?
Thank you very much.

PS: QueriableCollectionView.CanRemove returns false.

GridView

answered on 13 Jul 2011

6 answers

317 views

Refreshing GridView with database in WPF

Hello Telerik team,

I am using your radGirdView for viewing some of my records in my database.
When I add a record in my database, the gridview does not refresh.

I am new to WPF and it is just a simple basic program.

Thanks in advance!
Maarten

public void refreshList()

{

MySqlConnection conn = new MySqlConnection(connString);

personList.Clear();

using (conn)

{

String sql = "SELECT * FROM personeel ORDER BY Naam;";

MySqlCommand cmd = new MySqlCommand(sql, conn);

conn.Open();

MySqlDataReader reader = cmd.ExecuteReader();

StringBuilder htmlStr = new StringBuilder("");

while (reader.Read())

{

String Naam = htmlStr.Append(reader["Naam"]).ToString();

htmlStr.Clear();

String Voornaam = htmlStr.Append(reader["Voornaam"]).ToString();

htmlStr.Clear();

String Gsm = htmlStr.Append("0" + reader["GSM"]).ToString();

htmlStr.Clear();

personList.Add(new Person(Voornaam, Naam, Gsm));

}

conn.Close();

}

//gridView1 = new Telerik.Windows.Controls.RadGridView();

gridView1.ItemsSource = personList;

//CollectionViewSource.GetDefaultView(gridView1.ItemsSource).Refresh();

}

GridView

answered on 13 Jul 2011

1 answer

297 views

Spacing between lines

Ho do i change the spacing between the lines that get created when i press enter inside the Richtectbox the lines are loose and speratesd and the specifying Line spacing as 1 doesnt work.
Also if i copy few lines from notepad and paste it in rich text box even then i have this issue
Please suggest how can i control this spacing

RichTextBox

answered on 13 Jul 2011

1 answer

71 views

User resizeable InlineUIContainer

Is there a way to enable the same resizing behavior for InlineUIContainer as you get with images?

RichTextBox

answered on 13 Jul 2011

1 answer

223 views

RadDocking align tabs on right not working

I am trying to use the RadDocking and place the tabs on the right. However, when I set the TabStripPlacement property of the RadPaneGroup to "Right", the tabs take up the entire width of the control. When I set the width of the RadPane, the tab width is decreased, but the selected pane does not take up the remaining space. I have tried a lot of different things with no success - here is the xaml for the RadDocking:

<telerik:RadDocking BorderBrush="{x:Null}" BorderThickness="0" Padding="0" Name="_dock" Margin="0">

<telerik:RadSplitContainer Name="_splitContainer" Width="450">

<telerik:RadPaneGroup TabStripPlacement="Right" TabOrientation="Horizontal">

<telerik:RadPane Header="Item Image" Content="This is an item image" />

<telerik:RadPane Header="Tags" Content="These are the tags" />

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

</telerik:RadDocking>

Essentially, I'm trying to get the appearance of the TabControl with the TabStripPlacement property set to "Right" with the functionality of the RadDocking.

I would attach images, but I can't figure out how....

Docking

answered on 13 Jul 2011