Questions on UI for WPF Forum

1 answer

270 views

I have been unable to find the backend (C#) code to produce a ScatterLineSeries Chart.

A small snippet of code would be very helpful.

Thanks,
Nelson

Chart

answered on 28 Feb 2012

1 answer

190 views

GanttView and custom item templates

Working through some sample code with GanttView, and I'm wondering if I am able to do any of the following either by some level of re-templating or via support that I haven't yet discovered with the control's OM:

1. In-line labeling of milestones or summary tasks. I believe the control will apply a label inline with a task (shows up in the interior of the task timeline graphic). Can I do something similar for milestone diamonds and summary tasks?

2. Rollup views. Is there a way that I can show, for example, milestones or tasks laid on top of/inline with a summary task? E.g, can I get the same 'task rollup' functionality that we have today in Microsoft Project?

3. In general, is there some sample XAML that demonstrates changing the appearance of tasks/milestones/summary tasks?

Thanks!

--lars

GanttView

answered on 28 Feb 2012

2 answers

114 views

Disable Animation

How to disable Animation when filter descriptor is added?

DataFilter

answered on 28 Feb 2012

1 answer

170 views

Gradient in the editor

Hello

Is there option to edit gradient in the color editor?

Best Regards

Ehud

ColorEditor

answered on 28 Feb 2012

0 answers

165 views

DeferRefresh not allowed for AddNew or EditingItem transaction in RadScheduleView

Hi

DeferRefresh is not allowed while AddNew or EditingItem transaction.

While loading the sheduleview we are trying to Add appointment the above error is throwing . Actually in background control is not getting fully loaded that is why it is throwing error .The same error is throwing at same time while trying to set the DayDifinitionView StartDayTime and EndDayTime.

Thanks
Sekar

ScheduleView

asked on 28 Feb 2012

3 answers

192 views

RadMaskedTextInput and RadPropertyGrid control, error handling

Hallo guys,

When RadMaskedTextInput is used inside RadPropertyGrid control and when I have error state based on attributes that MaskedTextInput is using as validation parameter. How attribute Description can override Description used in RadPropertyGrid control ?

Thank you.
Best regards,
Branko

PropertyGrid

answered on 28 Feb 2012

1 answer

92 views

BusyIndicator when DropDownButton DropDownContent is open

I am having difficulties getting a busy indicator to show when a dropDown button is clicked. The dropDown buttons are created dynamically from a collection and a command is attached to each button. When the button is clicked, the command executes a specific service call to get the content of the dropdown. However, this service call may take a while to execute and I would like to show a busyindicator when this is happening. I have tried adding the busy indicator to the dropdown content with the listbox that gets populated after the service call is finished executing. However, it seems that the dropdown content is not even visible until the service call finishes.

I have also tried putting a busy indicator outside of the dropdownbutton (on a higher branch of the visual tree). The problem is that once the dropdownbutton is clicked, it seems that the whole UI freezes until the content gets populated so the busy indicator does not show.

We do not want to make the service call until the user clicks on that dropdown button. Can you please guide me on how I can accomplish this?

BusyIndicator

answered on 28 Feb 2012

0 answers

48 views

Re-using user controls between Silverlight and WPF

I have the Silverlight UI controls (assemblies/dlls) and I am looking to re-use this same user controls in a WPF application. Is this possible? Can I simply add the WPF references in the WPF project and the Silverlight references in the Silverlight project but use the same user controls/code? Or do they each have their own structure/api? Thanks,

General Discussions

asked on 27 Feb 2012

2 answers

293 views

Customized Field - DataFormComboBoxField

Hi,

How can I define the DataFormComboBoxField in my own Template?
Take telerik's code for testing:

        <Grid.Resources>
            <DataTemplate x:Key="MyTemplate">
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition/>
                        <ColumnDefinition/>
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition/>
                        <RowDefinition/>
                    </Grid.RowDefinitions>
                    <telerik:DataFormDataField Label="First Name" DataMemberBinding="{Binding FirstName, Mode=TwoWay}" />
                    <telerik:DataFormDataField Grid.Column="1" Label="Last Name" DataMemberBinding="{Binding LastName, Mode=TwoWay}" />
                    <telerik:DataFormComboBoxField Grid.Column="0" Grid.Row="1" Label="Occupation" Width="140"
                                                   ItemsSource="{Binding OccupationPositions}" />
                </Grid>
            </DataTemplate>
        </Grid.Resources>

The comboBox can't get the itemsSource, need help!

Thanks

DataForm

answered on 27 Feb 2012

5 answers

515 views

IDataErrorInfo support and ValidatesOnDataErrors

Hi,

I've been trying to use IDataErrorInfo with the RagGridView, and i ran into some problems.

First of all i haven't been able to find any documentation on RadGridView support for IDataErrorInfo.

there was a single post on the forum that mentioned working with it - and it does work to a certain extent.

What im doing is this: i implemented IDataErrorInfo on in my data model, and i am binding to the grid with ValidatesOnDataErrors="True"

The binding code is:

                    <controls:RadGridView Name="keywordGrid"  ShowGroupPanel="False" AutoGenerateColumns="False" Height="300"         
                                  >         
                <controls:RadGridView.Columns>         
                    <controls:GridViewDataColumn Header="Name" DataMemberBinding="{Binding DeferredEntity.Data.Name,  ValidatesOnDataErrors=True}"/>         
                    <controls:GridViewDataColumn Header="Destination Url" DataMemberBinding="{Binding DeferredEntity.Data.DestinationUrl, ValidatesOnDataErrors=True}"/>         
                    <controls:GridViewDataColumn Header="Tracking Url" DataMemberBinding="{Binding DeferredEntity.Data.TrackingUrl, ValidatesOnDataErrors=True}"/>         
                    <controls:GridViewDataColumn Header="Match Type" DataMemberBinding="{Binding DeferredEntity.Data.MatchType, ValidatesOnDataErrors=True}"/>         
                    <controls:GridViewDataColumn Header="Status" DataMemberBinding="{Binding DeferredEntity.Data.Status, ValidatesOnDataErrors=True}"/>         
                    <controls:GridViewDataColumn Header="Search Bid" DataMemberBinding="{Binding DeferredEntity.Data.SearchBid, ValidatesOnDataErrors=True}"/>         
                             
                </controls:RadGridView.Columns>         
                         
            </controls:RadGridView>         

When scrolling down on the grid everything works as it should - a red border around the invalid data elements shows that there's an error there and the error appears around the correct elements and does not appear around valid elements.

The problem starts when i scroll UP in the grid. as soon as i scroll up everything starts failing - error markers start appearing around all elements regardless of their validity. after scrolling 20-30 records up it doesnt matter what i do - scroll up or down, everything seems to have an error and the boarders start drawing in the wrong place, sometimes over the text of the cells in the grid.

is this the right way to use IDataErrorInfo with Telerik's RadDataGrid?

Is there some other way (but still using IDataErrorInfo binding)?

What is causing this strange behavior?

Also - how do i get the grid to show a tooltip when hovering over an element with an error (with the string that returned from IDataErrorInfo as the error message).

Thanks,

Yossi.

EDIT:

After the above post i thought i'd try a simple test project outside of the rest of our app.

What i found was this - If we bind directly to a property of a class - validation is not called.

If we bind indirectly (through a nested element) - validation is called, but the strange "up/down" behavior i mentioned above occurs.

I am attaching my test project.

Scroll up and down on the "Nested" grid to see the errors i mentioned, the "Direct" grid demonstrates that the validation code is never called.

Hmm...looks like i can't attach the project - so here is the source:

Window1.xaml:

                    <Window x:Class="GridIDataErrorInfoTest.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"         
                xmlns:controls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"         
                xmlns:grid="clr-namespace:Telerik.Windows.Controls.GridView;assembly=Telerik.Windows.Controls.GridView"         
                xmlns:gridView="clr-namespace:Telerik.Windows.Controls.GridView;assembly=Telerik.Windows.Controls.GridView"         
                Title="Window1" Height="800" Width="600">         
                <Grid>         
                             
                    <Grid.RowDefinitions>         
                        <RowDefinition Height="300"/>         
                        <RowDefinition Height="300"/>         
                    </Grid.RowDefinitions>         
                             
                    <controls:RadGridView Grid.Row="0" Name="directGrid"  ShowGroupPanel="False" AutoGenerateColumns="False" Height="300"          
                                  >         
                        <controls:RadGridView.Columns>         
                            <controls:GridViewDataColumn Header="Name - DirectBinding" DataMemberBinding="{Binding Name,  ValidatesOnDataErrors=True}"/>         
                            <controls:GridViewDataColumn Header="Binding Type - DirectBinding" DataMemberBinding="{Binding BindingType, ValidatesOnDataErrors=True}"/>         
                        </controls:RadGridView.Columns>         
                     
                    </controls:RadGridView>         
                    <controls:RadGridView Grid.Row="1" Name="nestedGrid"  ShowGroupPanel="False" AutoGenerateColumns="False" Height="300"          
                                  >         
                        <controls:RadGridView.Columns>         
                            <controls:GridViewDataColumn Header="Name - NestedBinding" DataMemberBinding="{Binding Test.Name,  ValidatesOnDataErrors=True}"/>         
                            <controls:GridViewDataColumn Header="Binding Type - NestedBinding" DataMemberBinding="{Binding Test.BindingType, ValidatesOnDataErrors=True}"/>         
                        </controls:RadGridView.Columns>         
                     
                    </controls:RadGridView>         
                </Grid>         
            </Window>         
                     

Window1.cs.xaml Code:

                    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 System.ComponentModel;         
            using System.Diagnostics;         
                     
            namespace GridIDataErrorInfoTest         
            {         
                public class DeeperBinding          
                {         
                    private TestData test;         
                     
                    public TestData Test         
                    {         
                        get { return test; }         
                        set { test = value; }         
                    }         
                             
                }         
                public class TestData : IDataErrorInfo,INotifyPropertyChanged         
                {         
                    private String name;         
                     
                    public String Name         
                    {         
                        get { return name; }         
                        set {         
                            name = value;         
                            if (this.PropertyChanged != null)         
                                this.PropertyChanged(this, new PropertyChangedEventArgs("Name"));         
                        }         
                    }         
                    private String bindingType;         
                     
                    public String BindingType         
                    {         
                        get { return bindingType; }         
                        set {         
                            bindingType = value;         
                            if (this.PropertyChanged != null)         
                                this.PropertyChanged(this, new PropertyChangedEventArgs("BindingType"));         
                        }         
                    }         
                    
                    
                    
                    #region IDataErrorInfo Members         
                     
                    public string Error         
                    {         
                        get {         
                            return null;         
                        }         
                    }         
                     
                    public string this[string columnName]         
                    {         
                        get          
                        {         
                            Debug.WriteLine("Calling validation - BindingType = "+this.bindingType);         
                     
                            if (!columnName.Equals("Name"))         
                                return null;         
                     
                            if (this.name.Equals("MyErrorValue"))         
                                return "Error !!! WAAHAHAHAHA";         
                            else         
                                return null;         
                                 
                        }         
                    }         
                    
                    #endregion         
                    
                    #region INotifyPropertyChanged Members         
                     
                    public event PropertyChangedEventHandler PropertyChanged;         
                    
                    #endregion         
                }         
                /// <summary>         
                /// Interaction logic for Window1.xaml         
                /// </summary>         
                public partial class Window1 : Window         
                {         
                    public Window1()         
                    {         
                                 
                        InitializeComponent();         
                        //direct binding ignores validation         
                        this.directGrid.ItemsSource = GenerateTestData("Direct");         
                        //binding to a nested element calls validation on the nested elements, but does not work properly.         
                        this.nestedGrid.ItemsSource = WrapInDeeperBinding(GenerateTestData("Nested"));         
                    }         
                    private List<TestData> GenerateTestData(String bindingType)         
                    {         
                        int count = 10000;         
                        List<TestData> result = new List<TestData>();         
                        for (int i = 0; i < count; i++)         
                            if (i % 2 == 0)         
                                result.Add(new TestData() { Name = "grgrbgrb", BindingType = bindingType});         
                            else         
                                result.Add(new TestData() { Name = "MyErrorValue", BindingType = bindingType });         
                     
                        return result;         
                    }         
                     
                     
                    private List<DeeperBinding> WrapInDeeperBinding(List<TestData> dataList)         
                    {         
                        List<DeeperBinding> result = new List<DeeperBinding>();         
                        foreach(var data in dataList)         
                            result.Add(new DeeperBinding(){Test = data});         
                        return result;         
                    }         
                }         
            }         
                     

GridView

answered on 27 Feb 2012