Questions on UI for WPF Forum

1 answer

132 views

Hi all,

I am just starting to implement zoom/scrolling for my RadChart. However, I am running into the problem where my X axis data type is DateTime, thus when I add ZoomScrollSettingsX it gave me "Cannot convert from Double to DateTime" error. Can someone get me started on creating a custom ZoomScrollSettings?

Much appreciated,
Jin

Chart

answered on 07 Aug 2012

1 answer

81 views

Custom Filtering Control

A while ago I built a custom Filtering Control for a boolean column based upon this article http://www.telerik.com/help/wpf/gridview-filtering-custom-filtering-controls.html (Shown in BeforeUpdate.png). It worked fine in version 2012.1.326.40. I have recently updated our version to 2012.2.725.40 and it now shows as AfterUpdate.png. the code I have in the method that Implement IFilteringControl.Prepare does get hit when the control is shown, it just is showing what looks to be the default filtering control and not my custom one.

I have used Style Templates for almost every part of the RadGridView, is there one I just need to update or something? Just not sure how to fix the issue since all i did was update to your latest Telerik version. Was there something that was changed which disabled custom Filter controls?

GridView

answered on 07 Aug 2012

3 answers

305 views

Vertical timeline

How do I set the time line to vertical orientation? I want to display the items in columns and the time intervals should be rows, like the ScheduleView.

TimeLine

answered on 07 Aug 2012

7 answers

227 views

2012.2.607.40 - WPF Designer Exceptions

I just updated to version 2012.2.607.40 today and now when I switch to design view in WPF I get the following exception:

Cannot locate resource 'themes/genericmetrotouch.xaml'.
   at MS.Internal.AppModel.ResourcePart.GetStreamCore(FileMode mode, FileAccess access)
   at System.IO.Packaging.PackagePart.GetStream(FileMode mode, FileAccess access)
   at System.IO.Packaging.PackWebResponse.CachedResponse.GetResponseStream()
   at System.IO.Packaging.PackWebResponse.GetResponseStream()
   at System.IO.Packaging.PackWebResponse.get_ContentType()
   at MS.Internal.WpfWebRequestHelper.GetContentType(WebResponse response)
   at MS.Internal.WpfWebRequestHelper.GetResponseStream(WebRequest request, ContentType& contentType)
   at System.Windows.ResourceDictionary.set_Source(Uri value)
   at System.Windows.Baml2006.WpfSharedBamlSchemaContext.<Create_BamlProperty_ResourceDictionary_Source>b__1c4(Object target, Object value)
   at System.Windows.Baml2006.WpfKnownMemberInvoker.SetValue(Object instance, Object value)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(XamlMember member, Object obj, Object value)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)

General Discussions

answered on 07 Aug 2012

0 answers

130 views

ComboBox Binding

Edit:
Here is the solution:

<telerik:GridViewComboBoxColumn Header="Location"

DataMemberBinding="{Binding LocationId}"

UniqueName="LocationId"

ItemsSourceBinding="{Binding Path=Locations,UpdateSourceTrigger=PropertyChanged,Mode=TwoWay}"

SelectedValueMemberPath="Id"

DisplayMemberPath="Name" />

I am evaluating the GridView and have ran into an issue binding the domain data which represents each row to the ComboBox in the GridView using MVVM. The GridView is populated with Employees. Each employees (Employee class) has a list of locations (Locations property on the Employee class) and a SelectedLocationId. These locations will fill the combobox in a column in the GridView. So for example, I have two employees, each bound to the Grid:

public class MyViewModel{

public BindingList<Employee> Employees { //The grid binds to this list}

}

public class Employee{

public string Name{...}

public int SelectedLocationId {...}

public BindingList<Location

> Locations {...} //Binds to combobox in grid. 

	//Location class has Name and Id property

The data:
Joe
Locations: US, Canada
SelectedLocation: Canada
Bob
Locations: US, Mexico
SelectedLocation: Mexico

One of the columns in the grid should be "Location" with a combobox column which has the respective data for each employee. I tried this in the GridView:

<telerik:GridViewComboBoxColumn Header="Location"
ItemsSource="{Binding Path=Locations, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type telerik:GridViewRow}}"
DisplayMemberPath="Name"
FocusVisualStyle="{x:Null}"
SelectedValueMemberPath="Id">

However, I see in the output, that the Combobox is trying to bind to the ViewModel instead of the domain entity Employee. How can I bind a combobox in the grid to a list on the domain entity in each row?

Thanks for your help!

GridView

asked on 06 Aug 2012

2 answers

162 views

Header Problems

I'm having problems with the header on my RadDocument. I've attached an image of what is occurring. The header has two paragraphs, the first showing the page fields and the second spans mimicking column headers for the table in the document. The first time the document is displayed, the content for the two paragraphs is switched. After paging, it is corrected. The switch will also come back if I maximize the window. Below is the code that creates the header document....

private RadDocument CreateHeaderDocument(List<GridViewBoundColumnBase> columns)

{

RadDocument document = new RadDocument();

Section section = new Section();

Paragraph paragraph = new Paragraph();

paragraph.FontSize = fontSize;

PageField pageField = new PageField()

{

DisplayMode = FieldDisplayMode.Result

};

FieldRangeStart pageFieldStart = new FieldRangeStart();

pageFieldStart.Field = pageField;

FieldRangeEnd pageFieldEnd = new FieldRangeEnd();

pageFieldEnd.Start = pageFieldStart;

paragraph.Inlines.Add(pageFieldStart);

paragraph.Inlines.Add(pageFieldEnd);

FieldRangeStart numPagesFieldStart = new FieldRangeStart();

numPagesFieldStart.Field = new NumPagesField()

{

DisplayMode = FieldDisplayMode.Result

};

FieldRangeEnd numPagesFieldEnd = new FieldRangeEnd();

numPagesFieldEnd.Start = numPagesFieldStart;

var ofSpan = new Span(" of ");

ofSpan.FontFamily = fontFamily;

ofSpan.FontSize = fontSize;

ofSpan.FontWeight = FontWeights.Bold;

ofSpan.ForeColor = Color.FromArgb(255, 0, 0, 0);

paragraph.Inlines.Add(ofSpan);

paragraph.Inlines.Add(numPagesFieldStart);

paragraph.Inlines.Add(numPagesFieldEnd);

section.Blocks.Add(paragraph);

var hdrPara = new Telerik.Windows.Documents.Model.Paragraph();

hdrPara.Background = _headerBackground;

var spaceWidth = GetScreenSize("i", fontFamily, fontSize, FontWeights.Bold, FontStyles.Normal, FontStretches.Normal).Width;

foreach (GridViewBoundColumnBase col in columns)

{

String s = String.Empty;

if (col.Header != null)

{

s = col.Header as String;

}

var span = new Telerik.Windows.Documents.Model.Span(s);

span.FontFamily = fontFamily;

span.FontSize = fontSize;

span.FontWeight = FontWeights.Bold;

span.ForeColor = Color.FromArgb(255, 0, 0, 0);

var hdrWidth = GetScreenSize(span.Text, span.FontFamily, span.FontSize, span.FontWeight, FontStyles.Normal, FontStretches.Normal).Width;

var spaces = (col.ActualWidth - hdrWidth) / spaceWidth;

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

{

span.Text += " ";

}

hdrPara.Inlines.Add(span);

}

section.Blocks.Add(hdrPara);

document.Sections.Add(section);

return document;

}

Please advise, as this is definitely a show stopper,
Thanks,
Steve

P.S. I also am curious as to why all the text in the header is gray; even when explictly setting the color to black.

RichTextBox

answered on 06 Aug 2012

4 answers

256 views

Implementing 'close all' functionality

Is there are built-in way to have a 'close all' option appear in the RadTabControl's drop-down menu? We have a close button on each tab, but it would be nice to also have an option in the drop down to close everything out.

Can this also be easily done in a context menu?

TabControl

answered on 06 Aug 2012

5 answers

161 views

ClearPresenterUI

After updating to the 2012.2 version I have problems with the RadRichTextBox.
When running my application it fails:

Exception: Object reference not set to an instance of an object.
Telerik.Windows.Documents.UI.DocumentWebLayoutPresenter
ClearPresenterUI

Source: Telerik.Windows.Documents
Target: Void ClearPresenterUI()
Stacktrace: at Telerik.Windows.Documents.UI.DocumentWebLayoutPresenter.ClearPresenterUI()
at Telerik.Windows.Documents.UI.DocumentWebLayoutPresenter.DoOnDocumentChanging()
at Telerik.Windows.Controls.RadRichTextBox.set_Document(RadDocument value)
at Telerik.Windows.Documents.FormatProviders.DataProviderBase.UpdateDocument()
at Telerik.Windows.Documents.FormatProviders.DataProviderBase.StringPropertyChangedCallback(DependencyObject sender, DependencyPropertyChangedEventArgs e)
....

RichTextBox

answered on 06 Aug 2012

3 answers

545 views

Formatting issues using VirtualizingWrapPanel

Hello. I'm see differences in formatting using a VirtualizingWrapPanel vs using a standard WrapPanel.

Here is the xaml:

<Window x:Class="GalleryView3.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" 
        Title="MainWindow" Height="350" Width="525" MinWidth="350">
    <Grid>
        <Border BorderThickness="3" MinWidth="100" MinHeight="100">
        <ListView ScrollViewer.HorizontalScrollBarVisibility="Disabled" Name="TabGalleryListView" ItemsSource="{Binding Source}" SelectionChanged="SelectionChanged">
            <ListView.ItemsPanel>
                <ItemsPanelTemplate>
                        <telerik:VirtualizingWrapPanel IsItemsHost="True" Orientation="Horizontal" />
                        <!--<WrapPanel IsItemsHost="True" Orientation="Horizontal" />-->
                </ItemsPanelTemplate>
            </ListView.ItemsPanel>
            <ListView.ItemTemplate>
                <DataTemplate>
                    <StackPanel Margin="10,10,10,10" Orientation="Vertical">
                        <Border BorderThickness="3" BorderBrush="Black">
                            <Image Width="128" Height="128" Source="{Binding ImageSource}" Stretch="Uniform" />
                        </Border>
                        <StackPanel Orientation="Horizontal" Margin="0,10,0,0" >
                            <CheckBox Margin="0,0,5,0" VerticalAlignment="Center"/>
                            <TextBlock TextWrapping="Wrap" VerticalAlignment="Center" Text="{Binding DisplayText}" Foreground="Red"/>
                        </StackPanel>
                    </StackPanel>
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>
        </Border>
    </Grid>
</Window>

You'll see where I've been commenting in/out the standard WrapPanel & the VirtualizingWrapPanel.

When I run with the WrapPanel enabled, and VWP commented out, I get the desired effect, a nice bunch of the same graphic with checkbox & text following. (first attached illustration)

When I run with the VWP enabled, and WrapPanel commented out, the image is not properly resized and the checkbox & text are clipped. (second attached illustration).

I'm thinking that they should both work the same! Hopefully you can tell me where I am going wrong.
My Telerik.Windows.Controls.dll version is 2012.2.607.40

Thanks!
Mark

VirtualizingWrapPanel

answered on 06 Aug 2012

3 answers

129 views

Manually Applied formating is lost and mess up after scrolling

Hi,

We had a RadGrid on a form and we are changing cell background of cells manually depending on values in the cells. ANd it works fine but when we scroll down and then back to up then applied colors are meshed up and applied incorrectly
We are using 2011.2.920.40 version of WPF controls.

Thanks

GridView

answered on 06 Aug 2012