Questions on UI for WPF Forum

4 answers

141 views

[Solved] Bug: DataSeries with DateTime shifted to same starting date

There is a bug when presenting multiple dataseries (DateTime) with different starting points.
All series are shifted to the same starting point (to the left).

The bug is easy to reproduce, and I have attached some sample code (updated for better formatting).

Is this possible to get around?

Also, is there a way to get a smaller presentation (eg. day/month/yr) of the dates along the x-axis? (so they do not overlap).

Best regards,

Tomas Wangen.

Window1.xaml

    
            <Window x:Class="GraphTest.Window1" 
        
                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="Window1" Height="400" Width="600" Loaded="Window_Loaded">  
        
                <Grid> 
        
                    <telerik:RadChart x:Name="MainChart"></telerik:RadChart> 
        
                </Grid> 
        
            </Window>

Window1.xaml.cs

    
            using System;  
        
            using System.Collections.Generic;  
        
            using System.Linq;  
        
            using System.Text;  
        
            using System.Windows;  
        
            using System.Windows.Controls;  
        
            using System.Windows.Data;  
        
            using System.Windows.Documents;  
        
            using System.Windows.Input;  
        
            using System.Windows.Media;  
        
            using System.Windows.Media.Imaging;  
        
            using System.Windows.Navigation;  
        
            using System.Windows.Shapes;  
        
            using Telerik.Windows.Controls.Charting;  
        
            namespace GraphTest  
        
            {  
        
                /// <summary>  
        
                /// Interaction logic for Window1.xaml  
        
                /// </summary>  
        
                public partial class Window1 : Window  
        
                {  
        
                    public Window1()  
        
                    {  
        
                        InitializeComponent();  
        
                    }  
        
                    class DataEntry  
        
                    {  
        
                        public DateTime dt { get; set; }  
        
                        public double value { get; set; }  
        
                    }  
        
                    private void Window_Loaded(object sender, RoutedEventArgs e)  
        
                    {  
        
                        MainChart.DefaultView.ChartArea.AxisX.IsDateTime = true;  
        
                        ISeriesDefinition definition = new StackedBarSeriesDefinition();  
        
                        DataSeries dataSeries1 = new DataSeries() { Definition = definition };  
        
                        DataSeries dataSeries2 = new DataSeries() { Definition = definition };  
        
                        DateTime time1 = DateTime.Today;  
        
                        DateTime time2 = time1 + new TimeSpan(1, 0, 0, 0);  
        
                        DateTime time3 = time2 + new TimeSpan(1, 0, 0, 0);  
        
                        DateTime time4 = time3 + new TimeSpan(1, 0, 0, 0);  
        
                        List<DataEntry> testData1 = new List<DataEntry>() {   
        
                            new DataEntry() { dt = time1, value = 10.0 },   
        
                            new DataEntry() { dt = time2, value = 15.0 },  
        
                            new DataEntry() { dt = time3, value = 20.0 }};  
        
                        // notice that testData2 is shiftet 24 hrs from testData1  
        
                        List<DataEntry> testData2 = new List<DataEntry>() {   
        
                            new DataEntry() { dt = time2, value = 30.0 },   
        
                            new DataEntry() { dt = time3, value = 40.0 },  
        
                            new DataEntry() { dt = time4, value = 20.0 }};  
        
                        foreach (DataEntry entry in testData1)  
        
                            dataSeries1.Add( new DataPoint(entry.dt) { YValue = (double)entry.value });  
        
                        foreach (DataEntry entry in testData2)  
        
                            dataSeries2.Add(new DataPoint(entry.dt) { YValue = (double)entry.value });  
        
                        MainChart.DefaultView.ChartArea.DataSeries.Add(dataSeries1);  
        
                        MainChart.DefaultView.ChartArea.DataSeries.Add(dataSeries2);  
        
                    }  
        
                }  
        
            }

Chart

answered on 02 Mar 2009

1 answer

304 views

[Solved] Filtering in TreeView

hello,

I am trying to implement a filtering functionality, wherein say I have a field in the TreeView Severity, and I want to Filter the treeView based on this property then I type the severity level in some textbox, say I type "a" then it should show me all the nodes whose severity starting with "a", and this should be handled on the keypress.

Any code highlighting this will be helpful.

TreeView

answered on 27 Feb 2009

1 answer

145 views

[Solved] Not the best behavior of range slider

Hello.

This issue is not big problem but still I think it could behave better. It is hard to describe what I mean and so I made this short video capture:

http://www.youtube.com/watch?v=m7mH0iRq-Gw

It is about range slider where I start to drag right slider to left until range is zero (for example like in video 21-21) then I keep mouse button down and move with mouse to the left and with mouse button still pressed I move back to the right again.

Then right slider should start to move to 21-22 and then 21-23 and so on but this is not happening. When I keep moving mouse to the right it later jumps to 21-26 and then 21-29 or something similar.

So trying to drag right slider too much to left visually makes nothing but it seems like inside RadSlider is something changing for some reason.
(It is same with left slider, I just used right as example.)

Best regards,
Michal

Slider

answered on 27 Feb 2009

7 answers

669 views

Determine is Row or Cell in sight

Hi all.

I want to determine if Row or Cell in sight.
I checked IsVisible field of RowGridView but it always true. IsVisible
property of GridViewCell is true at first. After i had moved it out of visible area
it became false. After that it was alway false even if row was in visible are of
grid.

Regards, Anton.

GridView

answered on 25 Feb 2009

3 answers

134 views

Bug: GridView Filters on column with Converters

Just a quick heads up. Though your probably aware of this.

Having a Converter on a column gets ignored by the filters (the filters just display the 'DataMemberPath').

Thanks

Guido

GridView

answered on 25 Feb 2009

4 answers

568 views

[Solved] SelectedItem and Binding

Hi,
I am new to the WPF world but I am trying to use the RadGridView in a ViewModel (MVVM) architecture.

Normally al my ViewModels contain a SelectedProduct property which automatically enables other realted commands in the UI. (change,view, etc).

This is working perfectly in the included ListBox control:

<ListBox ItemsSource="{Binding Products}"

SelectedItem="{Binding SelectedProduct}"

DisplayMemberPath="Product.ProductName">

</ListBox>

When trying the same in your Telerik RadGrid it fails my property setter never gets called.

<telerik:RadGridView telerik:Theming.Theme="Vista"

MultipleSelect="False"

ItemsSource="{Binding Products}" IsReadOnly="False"

SelectedItem="{Binding SelectedProduct}"

ColumnsWidthMode="Fill" AutoGenerateColumns="False">

<telerik:RadGridView.Columns>

The SelectionChanged event off course works and raises every time I click / move on another item but I am expecting my "SelectedProduct" property to be automatically updated (setter never called).

This SelectedProduct property get's called on the getter so actually it's used/read.

Looks like it's not using 2-way binding...

Any ideas what I am doing wrong??

GridView

answered on 24 Feb 2009

1 answer

63 views

Can i test all features of the controls from the trial versions

Hi every one i would like to know what features are available/not in the trial versions of the WPF controls.
Thanks.

General Discussions

answered on 24 Feb 2009

5 answers

284 views

[Solved] Decimal Column GridView

I have a grid with a decimal column in it. When i try to type a number with a decimal (ie 101.5), on press of the decimal key (period) the mouse cursor returns to the beginning of the column.

GridViewDataColumn

valueColumn = new GridViewDataColumn();

valueColumn.Name =

"Value";

valueColumn.UniqueName =

"Value";

valueColumn.HeaderText =

"Value";

valueColumn.DataMemberPath =

"Value";

valueColumn.Width =

new GridLength(80);

valueColumn.DataType =

typeof(decimal);

valueColumn.IsSortable =

false;

Thanks for any help.
-Brandon

GridView

answered on 24 Feb 2009

1 answer

131 views

Filtering - client events

Hi All,

I'm testing your WPF grid and would like to measure Filtering operation for my needs.
But I cannot find appropriate client events, something as:

RecordFilteringChanged
RecordFilteringDropDownOpen
RecordFilteringDropDownPopulated

Could you give me way to do that?

Grego

GridView

answered on 23 Feb 2009

1 answer

215 views

[Solved] Possible small "bug" with arrow keys

Hello.

I am trying RadSlider control and found this small problem:
I have on my container (Canvas) except RadSlider control also Button (or some other control that can have keyboard focus).

By default RadSlider has Focusable property set to true and when it has keyboard focus it also reacts on arrow keys.

Problem is that when I press and release arrow key it starts to move selection on slider but don’t stop with it (like when arrow key would be pressed forever).

I think the reason is that with arrow keys keyboard focus is moved to my button and I believe slider receives keydown event but don’t get keyup because it is already received by button. As KeyboardNavigation is by default set to Cycle keyboard focus with arrows.

For me this makes no problem because I don’t need this feature and so I set Focusable property on slider to false but I wanted to mention it.

Best regards,
Michal

Slider

answered on 23 Feb 2009