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TabControl
Hemal
Top achievements
Rank 1
 asked on 17 Aug 2009
3 answers
192 views
Aggregates on the Child Table in a heirarchy??
I can display the data how I want it with my custom column headers and such. However, I have some columns in my child tables I'd like to have aggregates on and display in a footer in the child table. Can this be done?

Thanks,
Byron
GridView
Vlad
Telerik team
 answered on 17 Aug 2009
3 answers
304 views
Group Aggregated Functions Caption
Hello,
I'm having troubles with the aggregate functions. On the examples that I have found when you group a column the collapsed row has whatever caption is on the GroupFooters and they seem to be left justified.
on the one I'm working with they display but they seem to be pushed to the right. I can't seem to find a way to position them to the left.

<telerik:RadGridView   
                Name="rgv"    
                Grid.Row="1"   
                Margin="10,5,10,5" 
                telerik:StyleManager.Theme="Office_Blue"   
                ShowColumnFooters="True"   
                ShowGroupFooters="True" 
                IsReadOnly="True"   
                AutoGenerateColumns="False" 
                ColumnsWidthMode="Auto" 
                ItemsSource="{Binding Source={StaticResource DataProvider}}">  
                <telerik:RadGridView.Columns> 
                    <telerik:GridViewDataColumn Header="ID" DataMemberPath="ID"  > 
                        <telerik:GridViewColumn.AggregateFunctions> 
                            <telerik:CountFunction Caption="Count:" /> 
                        </telerik:GridViewColumn.AggregateFunctions> 
                    </telerik:GridViewDataColumn> 
                    <telerik:GridViewDataColumn Header="Desc" DataMemberPath="Desc"  /> 
                    <telerik:GridViewDataColumn Header="Purchase Date" DataMemberPath="Purch_Date"  DataFormatString="{}{d}" /> 
                    <telerik:GridViewDataColumn Header="Purchase Price" DataMemberPath="Purch_Price" DataFormatString="{}{0:c}" > 
                        <telerik:GridViewColumn.AggregateFunctions> 
                            <telerik:SumFunction Caption="Sum:" ResultFormatString="{}{0:c}" SourceField="Purch_Price" /> 
                        </telerik:GridViewColumn.AggregateFunctions> 
                    </telerik:GridViewDataColumn> 
                    <telerik:GridViewDataColumn Header="Disposal Date" DataMemberPath="Disp_Date" DataFormatString="{}{d}" /> 
                    <telerik:GridViewDataColumn Header="Disposal Price" DataMemberPath="Disp_Price" > 
                        <telerik:GridViewColumn.AggregateFunctions> 
                            <telerik:SumFunction Caption="Disp Sum:" ResultFormatString="{}{0:c}" SourceField="Disp_Price" /> 
                        </telerik:GridViewColumn.AggregateFunctions> 
                    </telerik:GridViewDataColumn> 
                    <telerik:GridViewDataColumn Header="Type" DataMemberPath="Type" /> 
                    <telerik:GridViewDataColumn Header="Tax" DataMemberPath="Tax" /> 
                    <telerik:GridViewDataColumn Header="Status" DataMemberPath="Status" /> 
                    <telerik:GridViewDataColumn Header="Property Type" DataMemberPath="Property_Type" /> 
                </telerik:RadGridView.Columns> 
            </telerik:RadGridView> 

After grouping the type column i get somthing like
1503                                                           |  Count: 56                        |  Sum: $1,978.1     and the rest is cut off

Thanks much,
~Boots
GridView
Missing User
 answered on 14 Aug 2009
7 answers
814 views
[Solved] How do I get the RadTreeViewItem if I'm using HierarchicalDataTemplate?
I have a RadTreeView with HierarchicalDataTemplate as follows:

<HierarchicalDataTemplate DataType="Category" ItemsSource="{Binding XPath=Category}"> 
   <TextBlock x:Name="tbCategoryName" Text="{Binding XPath=@Name}" MouseRightButtonUp="tbCategoryName_MouseRightButtonUp" 
                           MouseDown="tbCategoryName_MouseDown"> 
   </TextBlock> 
</HierarchicalDataTemplate> 

I need access to the RadTreeViewItem so that I can call methods and properties such as BeginEdit, ExpandAll, and IsExpanded.
This is my RadTreeView declaration:

        <telerik:RadTreeView ItemsSource="{Binding Source={StaticResource CategoriesXML}}" Margin="105,64,0,0"  
                             Name="tvOntology" HorizontalAlignment="Left" VerticalAlignment="Top" Width="200" 
                             IsEditable="True" IsEnabled="True" IsExpandOnDblClickEnabled="False"  
                             IsExpandOnSingleClickEnabled="True"> 
        </telerik:RadTreeView> 
 
It works fine but I'm not able to get the RadTreeViewItem. Could someone tell me how, please?
TreeView
Tim
Top achievements
Rank 1
 answered on 14 Aug 2009
10 answers
434 views
Grouping of a column with a converter
Hello,
I encountered a problem with the GridView WPF-Control. When I use a Converter in the DataMemberBinding of a column and group by that column, the result will be grouped by the unconverted value.

To show the problem, i set up a small test project with a small "Person" class with "Name" (string), "Age" (int) and "Status" (int) properties.
In the test project, three persons-objects will be created and bound to a GridView. Each property in a seperate column.
The "Status" column uses a converter for the DataMemberBinding:
<Window x:Class="RadGridViewColumnTest.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:System="clr-namespace:System;assembly=mscorlib"         
    xmlns:local="clr-namespace:RadGridViewColumnTest" 
    Title="Window1" Height="300" Width="300"> 
    <Grid> 
        <Grid.Resources> 
            <local:StatusConverter x:Key="StatusConverterResource"> 
            </local:StatusConverter> 
        </Grid.Resources> 
        <telerik:RadGridView x:Name="grid" AutoGenerateColumns="False" Grouping="grid_Grouping"> 
            <telerik:RadGridView.Columns> 
                <telerik:GridViewDataColumn HeaderText="Person" DataMemberBinding="{Binding .Name}" DataType="{x:Type System:String}"> 
                </telerik:GridViewDataColumn> 
                <telerik:GridViewDataColumn HeaderText="Age" DataMemberBinding="{Binding .Age}" DataType="{x:Type System:Int32}"/> 
                <telerik:GridViewDataColumn HeaderText="Status" DataMemberBinding="{Binding  Path=Status, Converter={StaticResource StatusConverterResource}}" IsSortable="True" DataType="{x:Type System:Int32}" IsGroupable="True"/> 
            </telerik:RadGridView.Columns> 
        </telerik:RadGridView> 
    </Grid> 
</Window> 
 

public class StatusConverter : IValueConverter 
    { 
        #region IValueConverter Members 
 
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) 
        { 
            if ((int)value < 256) 
            { 
                return "< 256"; 
            } 
            else 
                return ">= 256"; 
 
        } 
 
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) 
        { 
            throw new NotImplementedException(); 
        } 
        #endregion 
    } 

The Status of the three persons are 122, 123, 321, and they appear correctly converted in the list.
Obviously the result, after a group by Status, should show the persons with Status 123 and 123 in one group because their Status is below 256.
But it seems the converter won't be used for grouping and every person appear in a single group.
Is there a solution for this problem ?

Thanks,  Michael
GridView
Michael
Top achievements
Rank 1
 answered on 14 Aug 2009
1 answer
88 views
[Solved] New Row with &quot;Interface-Bound&quot; GridView
Hi.
I am looking for "the right way" to add new Rows to a GridView...
1. Is there any pre-defined method to add new rows ? (Like the WinForms MS-Grid used to have...)
Something like:
AddNewRowIfUserDoubleClicksTheLeftPane="true" 

2. I am displaying some navigateable Properties which are based on Types of which I know the Interface only..
Something Like:
public class DisplayData  
{  
   public string Name { get; set; }  
   public ISomeInterfaceType Prop { get; set; }  
}  
  
public interface ISomeInterfaceType  
{  
   string OtherName { get; }  
}  
<telerik:GridViewDataColumn     
     Header="Name"    
     DataMemberBinding="{Binding Path=Name, Mode=OneWay}"    
     Width="2*"    
     IsReadOnly="True"/>    
<telerik:GridViewDataColumn     
     Header="Other"    
     DataMemberBinding="{Binding Path=Prop.OtherName, Mode=OneWay}"  
     DataType="{x:Type sys:String}"  
     Width="3*"    
     IsReadOnly="True"/>
However, I want to be able to let the user add new rows - in which case I need two entered strings (which I check for validity) and afterwards return the new "DisplayData"-Object. Currently I am doing this using a new Window (ShowDialog()) which let's the User input his data...

Can I use the "new-row" feature of the GridView, if some columns are bound to read-only properties or even classes of which I know only the Interface ?

Yours,
Nils


GridView
Nedyalko Nikolov
Telerik team
 answered on 14 Aug 2009
1 answer
219 views
WPF Demo
I am unable to view the cs code - clicking the tab leaves the xaml.
General Discussions
Valeri Hristov
Telerik team
 answered on 14 Aug 2009
1 answer
470 views
Binding to SelectedIndex Property
I can't seem to get TwoWay Binding to work with the TabControl SelectedIndex Property,  anybody else get this to work or is it just broken?
XAML Looks like this:
<Controls1:RadTabControl DockPanel.Dock="Top" SelectedIndex="{Binding Path=Header.SelectedTabIndex,Mode=TwoWay}" >
ViewModel Looks like this:
        public int SelectedTabIndex
        {
            get { return _selectedTabIndex; }
            set
            {
                if (_selectedTabIndex != value)
                {
                    _selectedTabIndex = value;
                    RaisePropertyChanged("SelectedTabIndex");
                }
            }
        }
Now, it gets updated if the user clicks a tab, but if its set in the ViewModel, TabControl does nothing...







Using 2009.2.701.35 build
TabControl
Bobi
Telerik team
 answered on 13 Aug 2009
8 answers
226 views
Databinding in LINQ vs OpenAccess different in same/similar code
I am really confused with how to DataBind. I have 2 nearly identical projects, one using LINQ, the other OpenAccess, using only the Categories table from the Northwind database. Basically, a grid (of that table), and 2 textboxes for editing / 2-way binding.

Here is the code for Window1.xaml (LINQ Project):
<Window x:Class="NWLinq.Window1" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:local="clr-namespace:NWLinq" 
    Title="Northwind LINQ" Height="400" Width="575" xmlns:my="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"> 
    <Window.Resources> 
        <ObjectDataProvider x:Key="objectDataProvider" ObjectType="{x:Type local:TestViewModel}"  /> 
    </Window.Resources> 
 
    <Grid DataContext="{Binding Source={StaticResource objectDataProvider}}"> 
        <Grid.ColumnDefinitions> 
            <ColumnDefinition Width="200*" /> 
            <ColumnDefinition Width="300*" /> 
        </Grid.ColumnDefinitions> 
        <Grid.RowDefinitions> 
            <RowDefinition Height="60*" /> 
            <RowDefinition Height="60*" /> 
            <RowDefinition Height="240*" /> 
        </Grid.RowDefinitions> 
        <my:RadGridView  
            Grid.Row="2"  
            Name="radGridView1"  
            Grid.ColumnSpan="2"  
            ColumnsWidthMode="Fill" 
            IsReadOnly="False"  
            SelectedItem="{Binding SelectedItem}" 
            ItemsSource="{Binding CategoryList}"              
        > 
        </my:RadGridView> 
        <TextBlock Margin="91,16,41,10" Name="textBlock1" Text="Name" HorizontalAlignment="Right" VerticalAlignment="Center" /> 
        <TextBlock Margin="91,14,41,8" Name="textBlock2" Grid.Row="1" Text="Description" HorizontalAlignment="Right" VerticalAlignment="Center" /> 
        <TextBox Grid.Column="1" Margin="58,15,64,11" Name="textBox1" Text="{Binding Path=SelectedItem.CategoryName, Mode=TwoWay}"  /> 
        <TextBox Margin="58,14,64,8" Name="textBox2" Grid.Column="1" Grid.Row="1" Text="{Binding Path=SelectedItem.Description, Mode=TwoWay}"  /> 
    </Grid> 
</Window> 
 

and from the OA project:
<Window x:Class="NWOA.Window1" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:my="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"     
    xmlns:local="clr-namespace:NWOA" 
    Title="Northwind OpenAccess" Height="400" Width="575" > 
    <Window.Resources> 
        <ObjectDataProvider x:Key="objectDataProvider" ObjectType="{x:Type local:TestViewModel}"  /> 
    </Window.Resources> 
 
    <Grid DataContext="{Binding Source={StaticResource objectDataProvider}}"> 
        <Grid.ColumnDefinitions> 
            <ColumnDefinition Width="200*" /> 
            <ColumnDefinition Width="300*" /> 
        </Grid.ColumnDefinitions> 
        <Grid.RowDefinitions> 
            <RowDefinition Height="60*" /> 
            <RowDefinition Height="60*" /> 
            <RowDefinition Height="240*" /> 
        </Grid.RowDefinitions> 
        <my:RadGridView  
            Grid.Row="2"  
            Name="radGridView1"  
            Grid.ColumnSpan="2"  
            ColumnsWidthMode="Fill" 
            IsReadOnly="False"  
            SelectedItem="{Binding SelectedItem}" 
            ItemsSource="{Binding CategoryList}"              
        > 
        </my:RadGridView> 
        <TextBlock Margin="91,16,41,10" Name="textBlock1" Text="Name" HorizontalAlignment="Right" VerticalAlignment="Center" /> 
        <TextBlock Margin="91,14,41,8" Name="textBlock2" Grid.Row="1" Text="Description" HorizontalAlignment="Right" VerticalAlignment="Center" /> 
        <TextBox Grid.Column="1" Margin="58,15,64,11" Name="textBox1" Text="{Binding Path=SelectedItem.CategoryName, Mode=TwoWay}"  /> 
        <TextBox Margin="58,14,64,8" Name="textBox2" Grid.Column="1" Grid.Row="1" Text="{Binding Path=SelectedItem.Description, Mode=TwoWay}"  /> 
    </Grid> 
</Window> 
 

They should be identical (other than x:Class=...)

The Window1.xaml.cs files are the same (except for the namespace:
using System.Windows; 
 
namespace NWLinq 
{ 
    public partial class Window1 : Window 
    { 
        public Window1() 
        { 
            InitializeComponent(); 
        } 
    } 
} 
------- 
 
using System.Windows; 
 
namespace NWOA 
{ 
    public partial class Window1 : Window 
    { 
        public Window1() 
        { 
            InitializeComponent(); 
        } 
    } 
} 
 

The viewmodels are as close as can be, based on different requirements for LINQ and OA:
using System.Collections.Generic; 
using System.Linq; 
 
namespace NWLinq 
{ 
    public class TestViewModel 
    { 
        NWLinqDataContext dc = new NWLinqDataContext(); 
        public TestViewModel() 
        { 
            SetTable(); 
        } 
 
        public void SetTable() 
        { 
            var query = 
            from c in dc.Categories select c; 
            CategoryList = query.ToList(); ; 
        } 
 
        public IList<Category> CategoryList 
        { 
            get; 
            set; 
        } 
 
        public Category SelectedItem 
        { 
            get; 
            set; 
        } 
 
    } 
} 
 

using System.Collections.Generic; 
using NWOpenAccess; 
using Telerik.OpenAccess; 
using Telerik.OpenAccess.Query; 
 
namespace NWOA 
{ 
    public class TestViewModel 
    { 
        private IObjectScope scope = NWScopeProvider.GetNewObjectScope(); 
        public TestViewModel() 
        { 
            SetTable(); 
        } 
 
        public void SetTable() 
        { 
            var query = 
            from c in this.scope.Extent<Category>() select c; 
            CategoryList = query.ToList(); ; 
        } 
 
        public IList<Category> CategoryList 
        { 
            get; 
            set; 
        } 
 
        public Category SelectedItem 
        { 
            get; 
            set; 
        } 
 
    } 
} 
 

I won't paste the code for the LINQ designer or the OA designer. Basically, just use the Categories table. From Northwind.

On the grid, moving up and down, the textboxes are updated in both apps.

The problem: If I edit in the grid, the changes are reflected in the textbox for the LINQ program and NOT the OA program.

What am I missing?

A follow up question... what is the best way to save the changes back to the database, and when? When the user moves off the record? When a button is pressed to confirm?












GridView
Nedyalko Nikolov
Telerik team
 answered on 13 Aug 2009
1 answer
160 views
2D zooming

Hi.

I'm using a trial version of RadControls for WPF.

I was looking for a way to dynamically "Zoom" in/out a 2D chart( both the x and y axises).

I tried to change TicksDistance value to achieve this goal, but no use.
I thought a refresh might be needed so I added a Dispatcher.Invoke call, and steel no use.

On the AxisY I tried all the above replacing TicksDistance of AxisX with Step property of AxisY.
No use.

If "zooming" is possible in a 2D (Spline series) what is the correct way achieving it?
Thank you
Uriya

code snippet:

 

this

 

 

.mMyChart.RadChart1.DefaultSeriesDefinition = new SplineSeriesDefinition();

 

List

 

<Data> listData = new List<Data>();
for (int i = 0; i < oc.OctaveNotes.Length; i++)  

 

 

{    listData.Add(

new Data(oc.OctaveNotes[i]));    }

 

this

 

.mMyChart.RadChart1.ItemsSource = listData;

 

 

 

 

 

if

 

(e.Delta > 0)//wheel up  

 

 

{ 

 

 

    Int32 Step = this.mMyChart.RadChart1.DefaultView.ChartArea.AxisX.TicksDistance;  

    Step = Step / 4 * 5; 

 

    this.mMyChart.RadChart1.DefaultView.ChartArea.AxisX.TicksDistance = Step;  

} 

 

else  

{ 

 

    Int32 Step = this.mMyChart.RadChart1.DefaultView.ChartArea.AxisX.TicksDistance; 

    Step = Step / 5 * 4; 

 

    this.mMyChart.RadChart1.DefaultView.ChartArea.AxisX.TicksDistance = Step;  

}


this.mMyChart.Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority.Render, mEmptyDelegate);

 

 

 

 

 

 

public class Data  

{ 

 

    private DateTime mX; 

 

    public DateTime X  

    { 

 

        get { return mX; } 
       set { mX = value; }  

 

    }

 

 

 

    private Double mY;
    public Double Y

 

    { 

 

 

        get { return mY; } 

 

        set { mY = value; } 

    }

    public

 

Data(NoteInOctave note)  

 

 

 

    {

        mX = note.NoteDateTime; 

 

        Double.TryParse(note.MesuredValue, out mY);  

    }

 

}

 

 

 

Chart
Vladimir Milev
Telerik team
 answered on 13 Aug 2009
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