Questions on UI for WPF Forum

1 answer

297 views

How to prevent moving connection / link / line

Hi!

On my RadDiagram control I have generated elements with connections. How to prevent moving connection?
I want to allow the user only to detach and attach the connection. Forbidden situation is visualised in forbiddenSituation.PNG. If the user unpin the connection and he/she doesn't drag connection to another item, the connection shouldn't be changed. So all connections should have Target and Source element.

I use ConnectionManipulationCompleted event. When ManipulationStatus is Moved I want to Undo this, but the truth is only the previous change will be undone, not current connection moving.

I was thinking I can cache previous state of connection (target and source) on ConnectionManipulationStared and set those if on ConnectionManipulationCompleted target or source are null. But it doesn't work.

Diagram

answered on 07 Mar 2016

1 answer

195 views

Grid Line Annotations and Data Point

In my chart I have dashed grid line custom lines but they're on the top of my customized data points. This doesn't happen on the regular Y axis lines.(see Screenshot)

I don't want my grid lines annotations to be on the top of my data points - How to fix this?

Thanks!

ChartView

answered on 07 Mar 2016

1 answer

132 views

How do I reset a cloud control

How can I reset a clod control? I want an event to clear the uploaded files on subscribe of an event.

CloudUpload

answered on 07 Mar 2016

3 answers

146 views

Issue with Finding Telerik Controls

Hi,

Currently I am trying to automate a Test flow in an application which uses Telerik controls ( RadControls for WPF Q2 2013, file version: 2013.2.611.45) using Visual studio 2012 (Coded UI Test). But while trying to find the controls I am facing issues as it is finding only very few properties. [Control type, control tag, technology name = UIA].

Is this correct functioning of Visual studio coded UI. If not can you please guide me about what steps to follow to rectify the error.

N.B. we already followed the steps mentioned in "http://docs.telerik.com/devtools/wpf/coded-ui-support.html" to install the telerik control support dll in visual studio. But still facing issues.

ANy help is appreciated.

THanks

AR

General Discussions

answered on 04 Mar 2016

6 answers

173 views

[Solved] Multiple AggregateFunctions shown in different objects

Hi,

I have two different AggregateFunctions in a GridViewDataColumn, and I would like to show the results in different objects. The first one should be shown in a TextBox, and the second, in a TextBlock.

This is the closer I got so far, but, obviously, both AggregateFunctions results are shown in a TextBox:

<telerik:GridViewDataColumn DataMemberBinding="{Binding StadiumCapacity}" Header="Stadium capacity">

<telerik:GridViewDataColumn.AggregateFunctions>

<local:CapacityAggregation />

<local:YearsLeftAggregation />

</telerik:GridViewDataColumn.AggregateFunctions>

<telerik:GridViewDataColumn.Footer>

<StackPanel Orientation="Vertical">

<telerik:AggregateResultsList ItemsSource="{Binding}" VerticalAlignment="Center">

<ItemsControl.ItemTemplate>

<DataTemplate>

<TextBox VerticalAlignment="Center" Text="{Binding FormattedValue}" />

</DataTemplate>

</ItemsControl.ItemTemplate>

</telerik:AggregateResultsList>

</StackPanel>

</telerik:GridViewDataColumn.Footer>

</telerik:GridViewDataColumn>

How can I achieve this? Any help would be appreciated.

GridView

answered on 04 Mar 2016

1 answer

201 views

RadGridView.ExportToXlsx not compatible with OpenOffice

I'm using the RadGridView.ExportToXlsx() to export my grid to an Excel (.xlsx) file. The exported File works perfectly in Excel 2016, but in OpenOffice (Apache_OpenOffice_4.1.2_Win_x86_install_de) I get the error "Wrong Format".

The only workaround is to open the exported file in Excel and save it. After that the file can be opened in OpenOffice.

I can reproduce the error with the WPF Controls Examples Q1 2016 SP1 (Exporting to Xlsx and Pdf fromats).

Is there any way to solve this?

GridView

answered on 04 Mar 2016

5 answers

285 views

Locate Item in paged QueryableCollectionView

Hi!

Let's say I have a list of 100 items with an Id ranging from 1 to 100. I put them in a QCV, ordered by Id, with a page-size of 20 resulting in 5 pages. I bind that QCV to a GridView and a DataPager. Page 1 is displayed which means Ids 1 to 20 are visible in the Grid.

Question: what is the most efficient way to find and display the item with a specific Id without loading all pages and skipping through all items in a page? Please give an example!

Regards
Heiko

General Discussions

answered on 04 Mar 2016

2 answers

156 views

[Solved] Short duration events not shown when timeline is big

Hi,

Say I have a timeline with a duration of 180hours. If I add events with duration of for instance 1 minute and zoom the timeline all the way out, the events become completely hidden. Zooming in on the area of the event will eventually make the event appear again.

Is there a way to set a minimum event width - at the very least a dot or a small vertical mark - to visually indicate that there exists an event here?

I am using custom templates for the events.

Thanks,

Kato

TimeLine

answered on 04 Mar 2016

13 answers

235 views

Hierarchy and IsExpandable

Hello!

I have a question about Hierarchy and IsExpandable, In my GridView ,user can add and remove father and son items.

I tried the code like this two way,they can set IsExpandable to false or true when loaded or add items,

but when I remove all the sub items of a father item, the IsExpandable can not set to false,is there any way to solve it? thanks a lot.

<telerik:RadGridView.RowStyle>

<Style TargetType="telerik:GridViewRow">

<Setter Property="IsExpandable" Value="True"/>

<Style.Triggers>

<DataTrigger Binding="{Binding Converter={StaticResource integerToBooleanConverter}, Path=SubList.Count}" Value="False">

<Setter Property="IsExpandable" Value="False"/>

</DataTrigger>

</Style.Triggers>

</Style>

</telerik:RadGridView.RowStyle

>

<i:Interaction.Behaviors>
  <behavior:IsExpandableBehavior IsExpandableSourcePropertyName="SubList.Count" />
 </i:Interaction.Behaviors>

GridView

answered on 04 Mar 2016

10 answers

654 views

Radmap and mbtiles as a TiledMapSource

I have been trying to write a TiledMapSource that reads from the mbtiles format https://github.com/mapbox/mbtiles-spec/blob/master/1.1/spec.md

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace RadMapMbtilesDemo

{

using System.Data.SQLite;

using System.Diagnostics;

using System.IO;

using System.Security.AccessControl;

using System.Windows.Media.Imaging;

using Telerik.Windows.Controls.Map;

public class MbTileSource : TiledMapSource

{

private readonly string mbtilefilepath;

/// <summary>

/// Initializes a new instance of the MyMapSource class.

/// </summary>

public MbTileSource(string mbtilefilepath, int minZoom, int maxZoom)

: base(minZoom, maxZoom, 256, 256)

{

this.mbtilefilepath = mbtilefilepath;

}

/// <summary>

/// Initialize provider.

/// </summary>

public override void Initialize()

{

// Raise provider initialized event.

this.RaiseIntializeCompleted();

}

/// <summary>

/// Gets the image URI.

/// </summary>

/// <param name="tileLevel">Tile level.</param>

/// <param name="tilePositionX">Tile X.</param>

/// <param name="tilePositionY">Tile Y.</param>

/// <returns>URI of image.</returns>

protected override Uri GetTile(int tileLevel, int tilePositionX, int tilePositionY)

{

return null;

}

protected override Stream GetCachedTile(int tileLevel, int tilePositionX, int tilePositionY)

{

var zoomLevel = this.ConvertTileToZoomLevel(tileLevel);

try

{

using (var conn = new SQLiteConnection(String.Format("Data Source={0};Version=3;", this.mbtilefilepath)))

{

conn.Open();

var sqlquery = String.Format("SELECT tile_data FROM tiles WHERE tile_column = {0} and tile_row = {1} and zoom_level = {2};", tilePositionX, tilePositionY, zoomLevel);

Debug.WriteLine(sqlquery);

using (var cmd = new SQLiteCommand() { Connection = conn, CommandText = sqlquery })

{

var reader = cmd.ExecuteReader();

if (reader.Read())

{

var bytes = reader["tile_data"] as byte[];

if (bytes != null)

{

return new MemoryStream(bytes);

}

catch

{

return null;

}

return null;

}

This works and reads the files from the mbtiles (sqlite underneath the mbtiles spec) but the map is requesting the wrong tiles and I cannot see why. My understanding is:

1) Radmap is requesting tiles in a TMS format

2) MbTiles are stored in a TMS format

So the XYZ values passed into GetCachedTile(int tileLevel, int tilePositionX, int tilePositionY) should be the same I use in my sqlite query. Things I have checked:

1) I wondered if my mbtiles files was actually using OSMs style XYZ and tried the code to flip the Y value, this still gives incorrect tile values

2) I checked my mbtile file with https://viswaug.wordpress.com/2011/06/28/mbtilesviewer/ and it works fine

So I can only assume that Radmap and mbtiles are using a different format or different projection hence the issues lining the two up. Can anyone help?

Map

answered on 04 Mar 2016