Questions on UI for WPF Forum

1 answer

199 views

Past Dates Not Visible in RadDatepicker.

Hi,

Im using RadDatepicker for from date and to date, In from date, im using DisplayDateEnd as ValidTo and in to date, im using DisplayDateStart as ValidFrom, its works fine based on the date selection of valid from and valid to, but how can i see the dates which are not visible.

I want to see the dates in calender with disabled mode of past and future dates.

Thanks,

Karthick.

DatePicker

answered on 22 Mar 2021

7 answers

175 views

Moving the sub-diagrams in the diagram(TreeLayout) to another row

Good afternoon.
We have a diagram (Tree Layout). Our diagram consists of separate sub-diagrams with no connection between them. Why does the last item automatically go to the second row (in the attach file, it is highlighted in red)? Could you tell me how this can be avoided? We need all the sub-diagrams to be placed in one line.

Diagram

answered on 22 Mar 2021

1 answer

313 views

Modern wpf UI frameworks

Hello everyone. I'm working as a .Net developer for a small start-up and we're about to start development on an application that has to be modern looking. I've worked with MahApps before, and am also aware of the material design library. Does anyone has another cool framework to check out? Even just a small one for specific UI components.
By the way I'm planning to use MVVM light and nHibernate if it's relevant.

General Discussions

answered on 22 Mar 2021

2 answers

950 views

TreeViewItem Command binding

Hello,

I have a treeView and I want to bind each item command, command parameter and IsEnabled properties. If I bind just the IsEnabled property it works, but if I add the command binding, the command works, but IsEnabled binding breaks.

I use the following code:

<telerik:RadTreeView ItemsSource="{Binding TreeViewModel.Categories}"

Grid.Row="0">

<telerik:RadTreeView.ItemTemplate>

<HierarchicalDataTemplate ItemsSource="{Binding SubCategories}">

<StackPanel Orientation="Horizontal">

<TextBlock VerticalAlignment="Center" Text="{Binding Name}" />

</StackPanel>

</HierarchicalDataTemplate>

</telerik:RadTreeView.ItemTemplate>

<telerik:RadTreeView.ItemContainerStyle>

<Style TargetType="telerik:RadTreeViewItem" BasedOn="{StaticResource RadTreeViewItemStyle}">

<Setter Property="IsEnabled" Value="{Binding IsEnabled}"/>

<Setter Property="Command" Value="{Binding Path=DataContext.GoToTabCommand, RelativeSource={RelativeSource AncestorType=telerik:RadWindow}}" />

<Setter Property="CommandParameter" Value="{Binding Name}" />

</Style>

</telerik:RadTreeView.ItemContainerStyle>

</telerik:RadTreeView>

How can I make both bindings to work?

TreeView

answered on 22 Mar 2021

4 answers

369 views

SpreadSheet Cell changed event infinite loop.

Hello.

When using the Cell Change Event, if you use ClearFill(), it takes an infinite loop. Is there any way to prevent this?

xaml - radspreadsheet < ActiveSheetChanged="radSpreadsheet_ActiveSheetChanged" />

C# Code

private void radSpreadsheet_ActiveSheetChanged(object sender, EventArgs e)

{

radSpreadsheet.ActiveWorksheet.Cells.CellPropertyChanged += cells_CellPropertyChanged;

}

private void cells_CellPropertyChanged(object sender, CellPropertyChangedEventArgs e)

{

var isSameValue = e.Property.UseSameValueAsPreviousOnInsert;

var column = e.CellRange.FromIndex.ColumnIndex;

var row = e.CellRange.FromIndex.RowIndex;

CellSelection cell = (sender as Cells)[row, column];

var value = cell.GetValue().Value.RawValue;

if (string.IsNullOrEmpty(value))

{

cell.SetFill(Defines.RedFill);

if (column == 2)

{

cell.Worksheet.Rows[row].Remove();

}

else if (value == Defines.NoParam)

{

cell.SetFill(Defines.YellowFill);

}

else

{

cell.ClearFill(); // This cellChanged event loop.

}

Thanks.

Spreadsheet

answered on 19 Mar 2021

1 answer

122 views

RadComboBoxItemAutomationPeer doesn't get IsSelected properly

Hello,

I'm using Telerik WPF R1 2021.

I'm using Automation to test our GUI and I came accross a problem from the RadComboBoxItemAutomationPeer

The property IsSelected isn't correctly retrieve when the RadComboBox is used with multiple selection as it uses the property "SelectedItem" and not "SelectedItems" to check the selection.

I don't want to override the whole Combobox to fix that so I will manage this some other way but if you think of another solution i'm all ears ;)

Regards,

Thomas

ComboBox

answered on 18 Mar 2021

22 answers

1.3K+ views

RadGridView Save/Load UserSettings + MVVM

Hi,

My Application follows MVVM and uses RadGridView Heavily, and there is a requirement to Preserve user settings which includes Groupings/Filters applied. There are two issues i'm facing at the moment.
1. I don't see a way of preserving Filters/Groupings while following MVVM
2. even if I forget about MVVM and follow the example provided still the Filters are not getting saved. Column Indexes, Column widths seems to be getting saved without a problem but it seems like there is an issue with preserving filters.

Note: I'm using the version 2010.3.1110.40, with .NET framework 4.0, on Windows 7.0

Could you please confirm if there is a known issue in preserving filter settings in the version above, and if not; also let me know if theres way of doing the same while follwing MVVM.

Appriciate a quick response as we have to finalize the requiments in comming week.

Thanx
Asela

GridView

answered on 18 Mar 2021

1 answer

121 views

Styling RadDiagramContainerShape Rad Border when draggin over

Hi.

I'm creating a UI to drag items from a RadListBox into a RadDiagramContainerShape. When dragging over the container shape a huge red border is generated, but it doesn't mix well with my app look and feel, is is possible to style it or remove it?

You can see an example here.

DragAndDrop

answered on 18 Mar 2021

1 answer

231 views

Cancelling drag operation

Hi,

i would like to move items with mouse and be able to cancel this operation with Esc key - cancel drag operation and move dragged item(s) back. How to do it correctly? I'm using MVVM patter if it does matter...

Thank you

Pavel

Diagram

answered on 18 Mar 2021

4 answers

158 views

RadGridView with grouping headers: Page-Up, Page-Down key controls does an incorrect vertical scroll height

Dear Telerik support team,

I have a RadGridView with more than 1 groups headers. When I use Page-Up, Page-Down key control to navigate inside the grid, the scroll height doesn't take in account the height of grouping headers. So that, while pressed on PageDown, the scroll goes to the middle of the next "page".

I attached a scenario as below:

1. When I'm in the first row of grid (see image: Before_PageDown.png), if I put on "Page Down" key, I expect the selection cursor goes to line "10916" (the last line of my viewport).

2. However, in reality, when I pressed on Page Down, it goes to line "10353" (see image: After_PageDown.png),

Many thanks for your help!

GridView

answered on 18 Mar 2021