Questions on UI for WPF Forum

1 answer

87 views

Validness of Grid

Hi All!

Please help me.

How can I check if grid valid or no?

Best Regards, Anton.

GridView

answered on 02 Mar 2009

1 answer

128 views

DatePickerEditorSettings problem

Hello,

I added Telerik DatePicker in RadGridView. Then i select data from opening calendar it work fine. But if i write date in editor (for example 27.02.09 or 27.02.2009) and move to next cell (click Tab or mouseClick) setter for this cell don't call, but if i click again in datePicker cell (don't write something) and move to next cell setter call and set value, which i wrote.

I set binding in xaml so:

<telerik:GridViewDataColumn UniqueName="InvoiceDate" HeaderText="InvoiceDate"

DataMemberBinding="{Binding Path=InvoiceDate,

ValidatesOnDataErrors=True,

UpdateSourceTrigger=PropertyChanged,

Mode=TwoWay}"

CellStyle="{StaticResource GridViewCellDefaultStyle}"

>

<telerik:GridViewDataColumn.EditorSettings>

<telerik:DatePickerEditorSettings></telerik:DatePickerEditorSettings>

</telerik:GridViewDataColumn.EditorSettings>

</telerik:GridViewDataColumn>

Could you help resolved this problem.

Thanks.

GridView

answered on 02 Mar 2009

1 answer

89 views

Displaying custom labels when grouping columns

Hello,

We would like to display custom labels in the grouping panel when users drag and drop columns.

Currently, the label displayed is the name of the property.

Is there a way to change it to a custom label ? It would be appreciated to use the HeaderText property of the column grouped.

In our case, we need to display white spaces.

Thanks by advance.

Cheers.

GridView

answered on 02 Mar 2009

4 answers

152 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

315 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

157 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

689 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

140 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

577 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