Questions on UI for WPF Forum

1 answer

213 views

validation

i am using the default start and end date pickers provided in AppointmentDialogWindow but i added an extra code to check when user chooses end date that occurs before start date and in this case i return the selected date to the old value but when i open the calender i find that the wrong values are still marked , so how can i remove focus or unselect them ??

DatePicker

answered on 04 Mar 2009

2 answers

184 views

Data sometimes not being painted in grid

Several of our grids are behaving like this. They have worked for months and while recently making a change to some of the columns, data no longer appears (column names are visible, and the columns are drawn, but the data inside is missing). If I click on a column to sort, the data appears. So it's like the screen is not initially being painted and an event like column sorting triggers a repaint.

These grids are in a rad tab control and when I click on another tab and then click back, the data disappears as well. The issue might actually be with the tab control.

Any idea what is going on and how to fix?

GridView

answered on 04 Mar 2009

1 answer

140 views

Click event on line's points

Hi,
I would like to add event to every point (DataPoint) on chart's line in "2D Chart Spline". So when I will click on it, it will display simple tooltip with value.

How can I do this?

Bests Regards,
Jacek Ciereszko

Chart

answered on 04 Mar 2009

1 answer

71 views

problem with ScrollViewer

Hi,
the GridView is acting strange when it is inside a scrollviewer.
It shows only one row at a time regardless the height of the control.

Thanks,
Tal

GridView

answered on 02 Mar 2009

1 answer

152 views

Delete one or more rows

We would like to use the standard delete key on the keyboard to delete rows from the GridView instead of the adding a delete button to each row in the grid as in the examples provided. This should be fairly easy to accomplish. However, I do not see any events that fire when a cell or row edit begins and ends. This is needed to prevent the keydown event from deleting a row when the delete key is pressed while editing a row. Can you let me know if there are any events that will tell us if the grid is in edit mode?

Thanks,

Doug

GridView

answered on 02 Mar 2009

1 answer

75 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

116 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

75 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

127 views

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

277 views

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