Questions on UI for WPF Forum

8 answers

399 views

Hi,
I have a GridView that I need to add some row whenever user reaches to the bottom of the Grid by scrolling down. I couldn't find any event that fires when this happens. I have used PreviewKeyDown but I cannot know if the vertical scrollbar is at the bottom and cannot move further down so I can add more rows to the Grid.
Thanks,

GridView

answered on 11 Jan 2011

1 answer

202 views

Problems with radTransitionControl in threaded window

Hi
In my application each thread is implemented in its own thread like:

public void OpenPartViewer(AbstractPart part)

{

Thread newWindowThread = new Thread(new ThreadStart(ThreadStartingPoint));

newWindowThread.SetApartmentState(ApartmentState.STA);

newWindowThread.IsBackground = true;

newWindowThread.Start();

part_ = part;

}

private void ThreadStartingPoint()

{

// Create a new window

PartViewerMainWindow win = new PartViewerMainWindow(part_);

win.Closed += (sender1, e1) => win.Dispatcher.InvokeShutdown();

win.Show();

// Start the new window's Dispatcher

System.Windows.Threading.Dispatcher.Run();

}

In one of the dialogs I previously used a ContentControl which I now want to replace with a RadTransitionControl like the above.

<telerik:RadTransitionControl x:Name="PartViewerContent" Grid.Column="1" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch"

Content="{Binding ElementName=TreeView, Path=SelectedItem}"

ContentTemplateSelector="{StaticResource PartViewerContentSelector}">

</telerik:RadTransitionControl>

But after changing to RadTransitionControl I get an error when I change selection in the treeview:

The calling thread cannot access this object because a different thread owns it

I asume it is raised because the transitions is rendered in the main thead but I don't know. And more important. Can I do some magic to make it work.

TransitionControl

answered on 11 Jan 2011

2 answers

179 views

Add record in Gridview while paging

Hi

Is it possible to add a new row into the gridview when you use paging?
without the paging it works, but our client would like to use paging.

I am using a datatable to fill up the datagrid (I receive this from a dll from a client).

VB

Dim pagedSource = New QueryableCollectionView(GetDataTable().AsEnumerable.ToList)
Me.radDataPager.Source = pagedSource
Me.radGridView.ItemsSource = pagedSource

XAML

<telerik:RadButton
    Width="150"
    Content="Add new row"
    Margin="0,0,5,0"
    Command="telerikGrid:RadGridViewCommands.BeginInsert"
    CommandTarget="{Binding ElementName=RadGridView}" />

</StackPanel>

<telerik:RadDataPager
    x:Name="radDataPager"
    PageSize="10"
    DisplayMode="All"
    IsTotalItemCountFixed="false"
    VerticalContentAlignment="Bottom"
</telerik:RadDataPager>

<telerik:RadGridView
    x:Name="radGridView"
    ItemsSource="{Binding PagedSource, ElementName=radDataPager}"
    VerticalAlignment="Top"
    CanUserDeleteRows="False"
    CanUserInsertRows="True"
    CanUserReorderColumns="False"
    ShowGroupPanel="False"
    AutoGenerateColumns="False"
    ShowInsertRow="True">
</telerik:RadGridView>

GridView

answered on 11 Jan 2011

1 answer

116 views

Problem Loading

sorry, accidentally hit enter!
title should read
"problem loading saved grid settings"

using the provided code from your demo, the 'loadstate' method in the radgridviewsettings file
causes the following exception
{"The binary operator Equal is not defined for the types 'System.Object' and 'System.Boolean'."}

This happens when I load a saved a filter setting, with a column that has boolean types filtered to false or true (nothing works fine).
it seems to arise from:

For Each fds As FilterDescriptorSetting In setting.SelectedDistinctValues

Dim fd As New Telerik.Windows.Data.FilterDescriptor()

fd.Member = fds.Member

fd.[Operator] = fds.[Operator]

fd.Value = fds.Value

cfd.DistinctFilter.FilterDescriptors.Add(fd)

Next

Me.grid.FilterDescriptors.Add(cfd)

Spent several hours trying to figure this out, any help that can point me in the right direction would be much appreciated!

regards,
Andrew

GridView

answered on 11 Jan 2011

2 answers

205 views

ItemSource Binding happens twice

Hi,

I am using the RadGridView in an MVVM project. The ViewModel has a property ObservableCollection<T> to which the ItemSource property is bound. When a I place a break point in the ViewModel property get, then it is accessed twice. Am I doing something wrong? The XAML is below. Also, what is the best practice when loading data using a pager and ensuring only page size is loaded from the database and not all records (e.g. Take(20));

Regards
Jaco

<Window x:Class="DBAppBestPractice.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:Examples="clr-namespace:DBAppBestPractice"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

xmlns:telerikGrid="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"

x:Name="root"

DataContext="{Binding Main, Source={StaticResource Locator}}"

>

<Window.Resources>

<ResourceDictionary>

<ResourceDictionary.MergedDictionaries>

<ResourceDictionary Source="Skins/MainSkin.xaml" />

</ResourceDictionary.MergedDictionaries>

</ResourceDictionary>

</Window.Resources>

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="Auto" />

<RowDefinition />

</Grid.RowDefinitions>

<Border Grid.RowSpan="2" />

<StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0,5,0,0">

<telerik:RadButton Width="150" Content="Delete selected rows" Margin="0,0,5,0"

Command="telerikGrid:RadGridViewCommands.Delete" CommandTarget="{Binding ElementName=RadGridView1}" />

<telerik:RadButton Width="150" Content="Add new row" Margin="0,0,5,0"

Command="telerikGrid:RadGridViewCommands.BeginInsert" CommandTarget="{Binding ElementName=RadGridView1}" />

<telerik:RadButton Width="150" Content="Save insert/edit" Margin="0,0,5,0"

Command="telerikGrid:RadGridViewCommands.CommitEdit" CommandTarget="{Binding ElementName=RadGridView1}" />

<telerik:RadButton Width="150" Content="Cancel insert/edit"

Command="telerikGrid:RadGridViewCommands.CancelRowEdit" CommandTarget="{Binding ElementName=RadGridView1}" />

</StackPanel>

<telerik:RadGridView x:Name="RadGridView1"

ItemsSource="{Binding LoadedSuppliers}"

SelectionMode="Extended"

AutoGenerateColumns="False"

Margin="0,5,0,0"

Grid.Row="1"

ActionOnLostFocus="None" RowEditEnded="RadGridView1_RowEditEnded" Deleted="RadGridView1_Deleted">

<telerik:RadGridView.Columns>

<telerik:GridViewColumn>

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<telerik:RadButton Content="Delete" Command="telerikGrid:RadGridViewCommands.Delete" CommandParameter="{Binding}" />

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Id}" Header="Id" IsReadOnly="True" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding Name}" Header="Name" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding Description}" Header="Description" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</Grid>

</Window>

GridView

answered on 11 Jan 2011

2 answers

60 views

got double record when add a record via RadGrid

Hello guys ,

My problem is when I add a record via RadGrid (property ShowInsertRow="True") then the result on RadGrid show 2 rows with same data.

Eg.

1. click add new record and fill in some data. > http://img814.imageshack.us/i/85624215.png/

2. after I press ENTER button and click on column header (sorting) I got this result. > http://img708.imageshack.us/i/96015502.png/

3. repeat step 1 and 2. I got this result > http://img214.imageshack.us/i/71641655.png/

XAML :

<telerik:RadGridView x:Name="CodeRadGrid" IsReadOnly="False" AutoGenerateColumns="False" SelectionMode="Extended" telerik:StyleManager.Theme="Office_Blue"

ItemsSource="{Binding PagedSource, ElementName=ctlDataPager}" ShowInsertRow="True" AddingNewDataItem="CodeRadGrid_AddingNewDataItem"

RowEditEnded="CodeRadGrid_RowEditEnded" >

<telerik:RadGridView.Columns>

<telerik:GridViewSelectColumn />

<telerik:GridViewDataColumn DataMemberBinding="{Binding aCode}" Header="A Code"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding bCode}" Header="B Code">

</telerik:GridViewDataColumn>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

<telerik:RadDataPager x:Name="RadDataPager" PageSize="7" DisplayMode="First, Last, Next, Previous, Text" IsTotalItemCountFixed="True" />

C#

private void CodeRadGrid_AddingNewDataItem(object sender, Telerik.Windows.Controls.GridView.GridViewAddingNewEventArgs e)

{

e.NewObject = new CodeObj();

}

private void CodeRadGrid_RowEditEnded(object sender, GridViewRowEditEndedEventArgs e)

{

if (e.EditAction == GridViewEditAction.Cancel)

{

return;

}

if (e.EditOperationType == GridViewEditOperationType.Insert)

{

((List<CodeObj>)this.RadDataPager.Source).Add( (CodeObj) e.NewData);

}

My RadDataPager.Source is List<CodeObj>.

Please give me some advice.

Thank you

SweNz

GridView

answered on 11 Jan 2011

2 answers

472 views

Get the Gridview current row

I have a button in a cell in each row.
When the user clicks the button, I need to transfer data from that row some where else

xaml

      <telerik:RadGridView x:Name="Search_RadDG" Margin="5,0"
                            ItemsSource="{Binding SearchResults}"
                            SelectionUnit="FullRow"
                             >

        <telerik:RadGridView.Columns>
          <telerik:GridViewColumn Header="Add Candidate" >
            <telerik:GridViewColumn.CellTemplate>
              <DataTemplate>
                <telerik:RadButton Content="Add" Click="RadButton_Click" />
              </DataTemplate>
            </telerik:GridViewColumn.CellTemplate>
          </telerik:GridViewColumn>
        </telerik:RadGridView.Columns>

</telerik:RadGridView>

VB

Dim btn As Telerik.Windows.Controls.RadButton
btn = CType(sender, Telerik.Windows.Controls.RadButton)

Dim cell As Telerik.Windows.Controls.GridView.GridViewCell
cell = btn.Parent()

Dim row As Telerik.Windows.Controls.GridView.GridViewRow
row = cell.Parent()

If row IsNot Nothing Then This is always nothing
row.IsSelected = True

      Dim can As FoundVoters
      Dim sOffice As String = Nothing
      can = Search_RadDG.CurrentItem

Dim wcf As New WCF_CommonDataContracts.DataCommon_WCF.WCF_Exception
With can

        wcf = DistrictData.Candidate_New(StateCbx.SelectedItem,   Countylbx2.SelectedItem,      DistType_lbx.SelectedItem,
                                      ParseDistrictCode(Districts_lbx.SelectedItem), SubDistricts_cbx.SelectedItem,        .Voter_id,
                                            EDate_DP.SelectedDate,             4, sOffice)
      End With

Candidate_List_Set()
End If

GridView

answered on 10 Jan 2011

3 answers

113 views

Is this grid possible?

Is the grid shown in the attached image possible with the Telerik ?

I'm prepared to give up on displaying column headers on each group (http://www.telerik.com/community/forums/wpf/gridview/repeating-column-headers-in-every-group.aspx)

However, If I can't repeat the column headers further down the grid, i could possibly fake grouping using 'normal' rows and style selectors. I would then need to be able to merge cells in two adjacent columns like in the Xceed or ComponentOne grids. Is this possible?

Thanks
Pete

GridView

answered on 10 Jan 2011

1 answer

452 views

How to dynamically add controls to a window

I want to be to be able to add textbox to the a rad window that is generated dynamically, but i can't see anything that will allow me to do this.
I was expecting to see some thing like ' Window.Child.Add();'

Can anyone help please?

RadWindow[] window = new RadWindow[5];

for (int i = 0; i < 5; i++)

{

window[i] = new RadWindow();

window[i].Width = 250;

window[i].Height = 250;

window[i].Name = "Apples" + i;

window[i].Show();

}

Window

answered on 10 Jan 2011

1 answer

113 views

Raddocking ToolWindow Prevent Resize

Hi,

I have created raddocking tool window from InitialPosition = "FloatingOnly" of RadSplitContainer.
I would like to prevent resizing tool window from user.

Thanks.
Jenny

Docking

answered on 10 Jan 2011