Questions on UI for WPF Forum

3 answers

202 views

Setting PeriodStart/End and VisiblePeriodStart/End at the same time via bindings

In my MVVM application, there is a RadTimeBar hosting a RadAreaSparkline to give the user an overview of the data. When a period of time is selected, the SelectionStart and SelectionEnd values are used to query a detailed set of data that is then displayed in a RadTimeline.

After the selection is made, I would like the RadTimeline to have its PeriodStart/End set to match the SelectionStart/End times of the RadTimeBar. This functionality is working.

At the same time that the RadTimeline has its PeriodStart/End set, I would like to set its VisiblePeriodStart/End to change to show the whole period. Once this has been done, however, the user should be able to zoom the RadTimeline as normal.

The properties for the RadTimeBar and RadTimeline are bound to properties on my ViewModel. However, what ends up happening is that after changing the PeriodStart/End, my changes to VisiblePeriodStart/End are overridden in TimeBarBase.CoerceVisiblePeriod(), as my calls to set VisiblePeriodStartart/End are being done before the PeriodStart/End DependencyProperty have been properly updated.

So what ends up happening is that sometimes I get what I want: i.e.VisiblePeriodStart/End being the same as PeriodStart/End, but other times, VisiblePeriodStart/End are set to the PREVIOUS values of PeriodStart/End.

Is there a proper set of steps that I am missing to make this work?

Thanks for your help

TimeLine

answered on 23 May 2013

3 answers

204 views

2013Q1 RadGridView Export question

Hi there,

my problem is I have a grid view, and I have tons of login in xaml which perform the grouping and aggregate function, some of the group header/footer may have a DataTemplate to host the data. When I export the grid using the native Export function, I have the following issue:

1. I lost the Group Header, the column I am used to group is not shown in UI and I disallow use to change the grouping
2. I lost the ColumnGroups
3. Some of the cell is incorrect datatype (e.g. number and was interpreted as date in Excel)
4. All the template data cannot be displayed, and what's generated is the datatype instead of the string value on the grid (same as copy from the grid directly using Ctrl-C)

Any help will be appreciated!

Here are some examples of the xaml:

1. Grid Definition

<telerik:RadGridView Name="GridViewMyGrid"

ItemsSource="{Binding MyCollection}"

AutoGenerateColumns="False"

IsReadOnly="True"

CanUserFreezeColumns="False"

GroupRenderMode="Flat"

ShowColumnFooters="True"

ShowGroupFooters="True"

AutoExpandGroups="True"

IsFilteringAllowed="False"

ShowGroupPanel="False"

FrozenColumnCount="2"

SelectionMode="Extended"

>

2. Column Group

<telerik:RadGridView.ColumnGroups>

<telerik:GridViewColumnGroup Name="Group1ColumnGroup"

Header="Group1">

<telerik:GridViewColumnGroup.HeaderTemplate>

<DataTemplate>

<TextBlock Text="Group1"

TextAlignment="Center"

FontWeight="Bold"></TextBlock>

</DataTemplate>

</telerik:GridViewColumnGroup.HeaderTemplate>

</telerik:GridViewColumnGroup>

3. Column (I have tons of column and just show two here, the 1st is used for grouping)

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding GroupName}" ShowColumnWhenGrouped="False" />

<telerik:GridViewDataColumn Header="Item1"

DataMemberBinding="{Binding Item1}">

<telerik:GridViewDataColumn.AggregateFunctions>

<telerik:FirstFunction/>

</telerik:GridViewDataColumn.AggregateFunctions>

<telerik:GridViewDataColumn.GroupFooterTemplate>

<DataTemplate>

<TextBlock FontWeight="Bold">

<Run Text="Subtotal "/>

<Run Text="{Binding Value.GroupName}"/>

</TextBlock>

</DataTemplate>

</telerik:GridViewDataColumn.GroupFooterTemplate>

<telerik:GridViewColumn.Footer>

<TextBlock FontWeight="Bold">

<Run Text="Asset Total"/>

</TextBlock>

</telerik:GridViewColumn.Footer>

</telerik:GridViewDataColumn>

And here is the method in the code behind to export:

private void ButtonExportStrats_OnClick(object sender, RoutedEventArgs e)

{

var grid = GridViewMyGrid;

var dialog = new SaveFileDialog();

dialog.DefaultExt = "*.xlsx";

dialog.Filter = "Excel Workbook (*.xlsx)|*.xlsx";

if (dialog.ShowDialog() == true)

{

Workbook book = null;

using (var stream = new MemoryStream())

{

grid.Export(stream, new GridViewExportOptions()

{

Format = ExportFormat.Csv,

ShowColumnFooters = grid.ShowColumnFooters,

ShowColumnHeaders = grid.ShowColumnHeaders,

ShowGroupFooters = grid.ShowGroupFooters

});

stream.Position = 0;

book = new CsvFormatProvider().Import(stream);

if (book != null)

{

var provider = new XlsxFormatProvider();

using (var output = dialog.OpenFile())

{

provider.Export(book, output);

}

GridView

answered on 23 May 2013

4 answers

315 views

MVVM Drop Down Buttons

Hi,

I tested the code of samples "Paint with MVVM".
All works good but how to add sub Items to a DropDownsButton?
I tryed a lot of strategies without success...

Thank's,
marc.

RibbonView and RibbonWindow

answered on 23 May 2013

3 answers

376 views

MVVM Ready?

Is it possible to use this control with MVVM? I don't think it's possible but figured I would ask the experts. Thanks.

BreadCrumb

answered on 23 May 2013

1 answer

106 views

MVVM binding pdf to book

Good Day,

According to the telerik demo on PDF integration for the book control, you must import the pdf to a RadFixedDocument, then set the itemssource of the book to RadFixedDocument.Pages. After attempting to bind the itemssource to the RadFixedDocument.Pages, it shows blank pages with "Telerik.Windows.Documents.Fixed.Model.RadFixedPage" in them.

I had even tried to duplicate the example in the demo and I'm still getting the same outcome.

Is there a way to solve this while still adhering to the MVVM pattern?

Thanks.

Book

answered on 23 May 2013

1 answer

328 views

GridViewComboBoxColumn SelectedValue based on RadGridView ItemsSource

I have a RadGridView which contains GridViewComboBoxColumn as column.

Let consider RadGridView having ItemsSource as ObservableCollection<Product> and GridViewComboBoxColumn ItemsSource is List.

I want to set the GridViewComboBoxColumn SelectedItem property based on property in RadGridView ItemsSource i.e based on ProductTypeId in item/row/Product of ItemsSource/ObservableCollection<Product>.

However Product class has property ProductTypeId of type int and not ProductType object as property.

So how can I set GridViewComboBoxColumn SelectedItem so that it display value of Product.ProductTypeId as selected. And also I want to bind SeletedItem with Mode = TwoWay so that whenever ComboBox SelectedItem changes it will be reflected in RadGridView
's ItemsSource.

One more thing the ProductId name is different in Product (Bound to RadGridView) class as well as ProductType class. However I can change this to be the same. Current it's like ProductType.Id and Product.TypeId.

Any help would be much appreciated.

Thanks.

GridView

answered on 23 May 2013

1 answer

214 views

Controlling RadMap Zoom Increment

I am using RadMap in a project that displays a large facility layout. Users can pan/zoom the map to select, inspect, and modify equipment around the facility. The use of RadMap's ZoomLevel, MinZoomLevel, and MaxZoomLevel are used to limit the user's zoom capabilities.

In this project, RadMap works great except for one issue. Users constantly complain that the zoom increments are too large. Two zooms in either direction make the map useless. We are either looking at a postage stamp when zoomed out twice, or most of the equipment icons are off the screen when zoomed in a few times.

RadMap zoom levels are integer values. I have seen other users ask if there is a way to use floating point zoom levels (such as "14.30"). The answer was always "No".

Are there any plans to add floating point zoom levels to RadMap in the future? Are there any workarounds I could use in this case to make zooming more beneficial?

Map

answered on 23 May 2013

8 answers

450 views

Using two datatypes on a RadTreeListView

Hi,

I'm currently trying to display two datatypes in a single RadTreeListView. The first datatype, 'Desk', have only two properties: 'Name', and a property 'Books' containing the second datatype: 'Book'.

public class Desk

{

public string Name { get; set; }

public List<Book> Books { get; set; }

}

public class Book

{

public string Name { get; set; }

public string Location { get; set; }

// Other stuff

}

I want to display a column 'Name' populated by both types, and a few other columns (in this example : 'Location') populated only for the child elements (Book).

Even though I wasn't able to create different templates for each types, the data could be binded since the property names are matching, and I can edit the Desk's properties. But the grid throws a 'Object does not match target type' exception when I try to edit a Book's properties.

<telerikGridView:RadTreeListView x:Name="RadTreeListView1"

AutoGenerateColumns="False"

IsReadOnly="False"

RowIndicatorVisibility="Collapsed"

ItemsSource="{Binding Path=Desks}">

<telerikGridView:RadTreeListView.ChildTableDefinitions>

<telerikGridView:TreeListViewTableDefinition ItemsSource="{Binding Path=Books}" />

</telerikGridView:RadTreeListView.ChildTableDefinitions>

<telerikGridView:RadTreeListView.Columns>

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Path=Name}" Header="Name" Width="150"/>

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Path=Description}" Header="Description" Width="*"/>

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Path=Location.Name}" Header="Location" Width="100"/>

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Path=Intention}" Header="Intention" Width="100"/>

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Path=TreatmentType}" Header="Treatment Type" Width="100"/>

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Path=AccountingTreatment}" Header="Accounting Treatment" Width="100"/>

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Path=IfrsType}" Header="Ifrs Type" Width="100"/>

</telerikGridView:RadTreeListView.Columns>

</telerikGridView:RadTreeListView>

Am I doing something wrong? Is there a workaround for this problem?

(enclosed screenshot)

TreeListView

answered on 23 May 2013

3 answers

307 views

Resource dictionary caching option?

Guys - I've run a profile on an app where we're only using your GridView, and are completely overriding your styles (based on your metro themes, bringing it back even more) and have noticed thousands of ResourceDictionaries instantiated which identify as internal to your DLLs - are you using hard-coded references, and do you have some form of resourcedictionary caching I might be missing? dll versions are 2013.1.220.40

Cheers,
AC

GridView

answered on 23 May 2013

4 answers

253 views

Open Dataform in Edit Mode?

Hi,

i use a RadDataForm in a DialogWindow. I want to open the Dialog, bind the ItemSource on the Dataform and now
I want to get the DataForm in Edit Mode.

I tried AutoEdit="true" this will open my DataForm in EditMode, but on click on the OK Button the DataForm ist still
in Edit Mode!

How can I open the DataForm in Edit mode?

Thanks
Best Regards
Rene

DataForm

answered on 23 May 2013