Questions on UI for WPF Forum

1 answer

131 views

I am trying to use IResource to create custom resources but can not make it work no appointments are displayed, all the resources are displayed in the group headers but no appointments, I have created a class that inherits from IResource and i am setting all the properties (resource name, resource type and display name), I am loading appointments from xaml just like the demo examples and there are i am using my custom class as resource.
I even added group and appointment filter to see what is wrong but they are never even called.

If i use simple Resource class then every thing works

Thanks
vikas

ScheduleView

answered on 27 Oct 2014

2 answers

244 views

Error printing PDF: Message: An unhandled exception of type 'System.ArgumentNullException' occurred in Telerik.Windows.Zip.dll

I have this message while printing a particular PDF: https://drive.google.com/file/d/0BzXenGGVXpm3Nm9jUDNlTXRGNG8/view?usp=sharing

The error stack is:

System.ArgumentNullException was unhandled
Message: An unhandled exception of type 'System.ArgumentNullException' occurred in Telerik.Windows.Zip.dll
Additional information: Value cannot be null.

Other PDF prints fine. How do I resolve it ? Any suggestion on what to look at ?

Other information:
----------------
Teleriks RadControls version 2014.2.729.40
Telerik.Windows.Zip.dll: version 2014.2.729.40
ASP.NET 4.0
Visual Studio 2013
Windows 7 x64

PDFViewer

answered on 27 Oct 2014

1 answer

431 views

Cannot find Datacontext (Viewdefinitions)

I am having problem in binding to the Datacontext at viewdefinition level, It works if i create my viewmodel in xaml and set the DataContext of the grid using staticresource, but if i set the datacontext to the window in code behind it does not work

<schedule:RadScheduleView.ViewDefinitions>
<schedule:DayViewDefinition GroupFilter="{Binding GroupFilter2}"/>
<schedule:WeekViewDefinition GroupFilter="{Binding GroupFilter2}"/>
<schedule:MonthViewDefinition GroupFilter="{Binding GroupFilter2}"/>
</schedule:RadScheduleView.ViewDefinitions>

----------- this does not work, does no bind to Group Filter -----------------
public MainWindow()
{
InitializeComponent();
this.DataContext = new ViewModel();
}

----------- this works -------------------

<Window.Resources>
<local:ViewModel x:Key="ViewModel" AppointmentsSource="/Schedule;component/Appointments.xaml" />
<Grid x:Name="mainGrid" DataContext="{StaticResource ViewModel">

ScheduleView

answered on 27 Oct 2014

3 answers

230 views

Filtering Highlight Matched Text

I think it would be cool to have the filtered choices in my combobox to have the matching text highlighted.

For example:
[at ]
Documentation
Ultimate
Administrator
Cat in the Hat

Any suggestions on how to go about this?

ComboBox

answered on 27 Oct 2014

6 answers

488 views

SelectColumn in Group Header

Hi,

Is it possible to put the selectcolumn or check box into the Group Header?

When the check box in the group header is selected, I will like all the select columns(checkboxes) ticked of the items within the groups.

and when any item in the group is unchecked, I would like the check box in group header is unchecked as well.

When the group has subgroups, I also want the subgroup checkbox to be checked when I loop through them using group.subgroups.

In the case, how could I grad a reference to the checkbox in the subgroup row?

Am I using the right approch with the code below?

<telerik:RadGridView.GroupHeaderTemplate>

<DataTemplate>

<StackPanel Orientation="Horizontal">

<CheckBox Click="RadGridViewGroupRowClicked" Margin="0 0 3 0"/>

<TextBlock Text="{Binding Group.Key}" />

</StackPanel>

</DataTemplate>

</telerik:RadGridView.GroupHeaderTemplate>

private void RadGridViewGroupRowClicked(object sender, System.Windows.RoutedEventArgs e)

{

var groupViewModel = (sender as CheckBox).DataContext as GroupViewModel;

var isChecked = (bool) (sender as CheckBox).IsChecked;

CheckUncheckRows(isChecked, groupViewModel);

}

public void CheckUncheckRows(bool isChecked, GroupViewModel groupViewModel)

{

CheckUncheckItems(isChecked, groupViewModel.Group);

}

public void CheckUncheckItems(bool isChecked, IGroup group)

{

if (group.HasSubgroups)

{

foreach (var subgroup in group.Subgroups)

{

CheckUncheckItems(isChecked, subgroup);

}

else

{

foreach (var item in group.Items)

{

if (isChecked)

{

baseToTargetGridView.SelectedItems.Add(item);

}

else

{

baseToTargetGridView.SelectedItems.Remove(item);

}

Thanks,

Yu

GridView

answered on 27 Oct 2014

4 answers

499 views

[Solved] TabControl Style

Hi,

i use the TabControl and i want to change the Style of the Header like the attached pic.
How can ein solve this?
As you can see there is a space before the first TabItem and in the BAckground you
can see some Information and some buttons.

THanks a lot
Best Regards
Rene

TabControl

answered on 26 Oct 2014

2 answers

259 views

Grouping by Object and custom group header

Hi, I'm grouping my list of values from an object.
This object might be one of these 3 classes: Class1, Calss2, Calss3. This is working.

I followed your sample: http://www.telerik.com/forums/group-header-style for a custom header template.

But when I'm selecting the template from each group header I find the string "Class1", "Calss2", "Calss3" instead of its real value.

What am I doing wrong? Am I missing something?

TimeLine

answered on 24 Oct 2014

5 answers

1.4K+ views

Applying filtering in RadGridView programmatically

What I try to achieve is to apply a filter to my RadGridView whenever user checks / unchecks a checkbox (pretty straightforward, right?). My code works fine when I set the AutoGenerateColumns flag of my gridview to True, but does nothing when I switch the flag to False (the IsActive flag of my ColumnFilterDescriptor never changes to True). I need to apply a specific template to my columns so the AutoGenerateColumns flag has to be False. Both of the columns I try to filter have the IsFilterable flag to True and are binded to a string (and not a custom defined class). Here is my RadGridView:

<Merging:RadGridViewWithSelectedItemsEditable

x:Name="SelectedUserAttributesGridView"

Grid.Row="0"

ItemsSource="{Binding MergeDetailsViewModel}"

AutoGenerateColumns="False"

VerticalAlignment="Top"

CanUserDeleteRows="False"

CanUserFreezeColumns="False"

SelectionMode="Extended"

ScrollMode="Deferred"

CanUserInsertRows="False"

CanUserReorderColumns="True"

CanUserResizeColumns="True"

CanUserSelect="False"

CanUserSortColumns="False"

ShowGroupPanel="False"

FrozenColumnsSplitterVisibility="Hidden"

GridLinesVisibility="None"

RowIndicatorVisibility="Collapsed"

IsEnabled="{Binding MergeDetailsEnabled}"

<Merging:RadGridViewWithSelectedItemsEditable.Columns>

<telerik:GridViewColumn Header="Well">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<TextBlock VerticalAlignment="Center" Margin="3,0,3,0" Text="{Binding WellName}" />

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewColumn Header="UWI">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<TextBlock VerticalAlignment="Center" Margin="3,0,3,0" Text="{Binding UWI}" />

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewColumn Header="{Binding SelectedAttributes[0].Name}" IsFilterable="True">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<TextBlock VerticalAlignment="Center" Margin="3,0,3,0" Text="{Binding FirstSelectedAttributeValue}" />

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewColumn Header="{Binding SelectedAttributes[1].Name}" IsFilterable="True">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<TextBlock VerticalAlignment="Center" Margin="3,0,3,0" Text="{Binding SecondSelectedAttributeValue}" />

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewColumn Header="Preview">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<TextBlock VerticalAlignment="Center" Margin="3,0,3,0" Text="{Binding Preview}" />

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

</Merging:RadGridViewWithSelectedItemsEditable.Columns>

</Merging:RadGridViewWithSelectedItemsEditable>

where FirstSelectedAttributeValue and SecondSelectedAttributeValue are both string properties of my class Well, and MergeDetailsViewModel an ObservableCollection<Well>.

Here is the code of the event handler for the checkbox that applies the filter:

private void CheckBoxClicked(object sender, RoutedEventArgs e)

{

if (ShowHideNullValuesButton.IsChecked != null && (bool)ShowHideNullValuesButton.IsChecked)

{

ApplyNonNullFilter(2);

ApplyNonNullFilter(3);

}

else

SelectedUserAttributesGridView.FilterDescriptors.Clear();

}

private void ApplyNonNullFilter(int columnIndex)

{

Telerik.Windows.Controls.GridViewColumn attributeValueColumn =

SelectedUserAttributesGridView.Columns[columnIndex];

IColumnFilterDescriptor attributeValueColumnFilter =

attributeValueColumn.ColumnFilterDescriptor;

attributeValueColumnFilter.SuspendNotifications();

attributeValueColumnFilter.FieldFilter.Filter1.Operator = FilterOperator.IsNotEqualTo;

attributeValueColumnFilter.FieldFilter.Filter1.Value = "NaN";

attributeValueColumnFilter.FieldFilter.Filter1.IsCaseSensitive = true;

attributeValueColumnFilter.ResumeNotifications();

}

What am I missing? Why filtering fails? Btw, I don't get any errors or exceptions when building and running the code. Thanks.

GridView

answered on 24 Oct 2014

5 answers

346 views

radmaskednumericinput two way binding doesn't work

Hi,

I have a radmaskednumericinput which is binded two way to a property, but there is a problem, when focusing the textbox, the value from code is overided with zero.

Thanks,
Rachel.

MaskedInput (Numeric, DateTime, Text, Currency)

answered on 24 Oct 2014

1 answer

145 views

RadTreeViewItem.IsDragAllowed

There is an IsDropAllowed property but no IsDragAllowed, have I missed it or an equivalent property or will I have to revert to a coding solution?

Thank you,

TreeView

answered on 24 Oct 2014