Questions on UI for WPF Forum

3 answers

600 views

TabControl with Custom ContentTemplate not redrawing

I have a RadTabControl with a Custom ContentTemplate. It works fine, and displays the content as I'd expect when first viewing the tab. However, when changing from one tab, back to the original tab, I find that the data inside the content presenter is no longer being displayed. It appears as if the DataContext or ItemsSource binding is no longer being applied as I'd expect.

Below is a short expample which should illustrade what I'm seeing. I'm using MVVM, and the ClosedOrderCol in the code snippet below is an ObservableCollection on the ViewModel.

Any help would be appreciated.

    
            <Navigation:RadTabControl> 
        
                        <Navigation:RadTabControl.ItemContainerStyle> 
        
                                <Setter Property="ContentTemplate"> 
        
                                    <Setter.Value> 
        
                                        <DataTemplate>

                                            <Grid> 
        
                                               <ContentPresenter Content="{TemplateBinding Content}"/>

                                            </Grid>

                                        </DataTemplate> 
        
                                    </Setter.Value> 
        
                                </Setter> 
        
                        </Navigation:RadTabControl.ItemContainerStyle> 
        
                        <Navigation:RadTabItem> 
        
                                <Controls:RadGridView Grid.Row="1" ItemsSource="{Binding ClosedOrderCol}" IsReadOnly="True"> 
        
                                    <Controls:RadGridView.Columns>                        
        
                                       <Controls:GridViewDataColumn Header="Closed" DataMemberBinding="{Binding DateClosed}" /> 
        
                                    </Controls:RadGridView> 
        
                        </Navigation:RadTabItem> 
        
                        <Navigation:RadTabItem /> 
        
            <Navigation:RadTabControl>

TabControl

answered on 08 Jan 2010

7 answers

158 views

Select GridViewCell

How do I select a new row, column[0] when I add it to my grid in code?

private void Button_Add_Items_Click(object sender, RoutedEventArgs e)

{

Item item = new Item();

i.ItemList.Add(item);

rgvItems.SelectedItem = rgvItems.Items[rgvItems.Items.Count -1];

rgvItems.ScrollIntoView(rgvItems.SelectedItem);

//rgvItems.BeginEdit();

}

The BeginEdit takes me to the first row and column.

Thanks!

GridView

answered on 08 Jan 2010

3 answers

290 views

Axis label color - same with series color

Hello!

I use a Chart of many different line series and I want to take advantage of multiple Y Axis in my chart but it's kind of confusing at some point because you could not tell which axes is related to which line series. It would be very helpful if I could somehow bind the color of the line series with the color of the Y axis label or line label, but it seams that I cannot find a way.
Right now I am trying to create a style for the AxisTitle that uses the same SolidColorBrush that the line series has (guess what - this is null when I'm trying to get it).

    
            Style axisTitleStyleItem = new Style( typeof( AxisTitle ) );

            axisTitleStyleItem.Setters.Add( new Setter 

              { Property = Control.ForegroundProperty,

                Value = (SolidColorBrush)secondaryLineSeries.Appearance.Stroke } );

Maybe I'm not taking the right approach. Help would be welcomed at this point.
Thank you!
Roxana

Chart

answered on 08 Jan 2010

1 answer

70 views

NullReferenceException in Grid when Items are empty

We are using version 2009.1.526.35 of the GridView control. In some situations, we are encountering NullReferenceExceptions when the GridView attempts to layout with no items in it. We have found this problem happening under at least 2 scenarios:

1) Calling ApplyTemplate() on the GridView and all of its template children recursively.

2) Clearing/Removing all items from the GridView (in this case it seems to happen randomly - definitely not always).

In both cases, the problem is in the Measure pass and appears to be a problem with the GridView's panel. Looks like it is trying to access an item or the first item in the Grid when it is empty.

1) Is this a known issue?

2) Is it fixed in a newer version of the control?

Stack Trace:

at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgumentargument, ExceptionResource resource)

at System.ThrowHelper.ThrowArgumentOutOfRangeException()

at System.Collections.Generic.List`1.get_Item(Int32 index)

atTelerik.Windows.Controls.GridView.GridViewVirtualizingPanel.GetChildIndexByPhysicalOffset(Doubleoffset)

atTelerik.Windows.Controls.GridView.GridViewVirtualizingPanel.UpdateFirstVisibleChildIndex(Doubleoffset)

atTelerik.Windows.Controls.GridView.GridViewVirtualizingPanel.SetVerticalOffset(Doubleoffset)

atTelerik.Windows.Controls.GridView.GridViewVirtualizingPanel.ResetVerticalOffset()

atTelerik.Windows.Controls.GridView.BaseVirtualizingPanel.MeasureOverride(SizeavailableSize)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at System.Windows.ContextLayoutManager.UpdateLayout()

at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Objectarg)

at System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork()

at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()

at System.Windows.Media.MediaContext.RenderMessageHandlerCore(ObjectresizedCompositionTarget)

at System.Windows.Media.MediaContext.RenderMessageHandler(ObjectresizedCompositionTarget)

at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegatecallback, Object args, Boolean isSingleParameter)

at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source,Delegate callback, Object args, Boolean isSingleParameter, DelegatecatchHandler)

GridView

answered on 08 Jan 2010

2 answers

201 views

Rad Hierarchy Gridview Format Issues

Hi Telerik Team,

I'm facing few issues in the Hierarchy Grid View.

1. When I expand a particular node and scroll down to the end and collapse it back, I see custom formatting applied in the row loaded event of the cells (Text Alignment in particular) gets reset to the default alignment (i.e left), as seen in image1.png.
This doesnt happen when its with in the screen view and it happens only when i scroll, the values in the cells gets scattered and the screen looks awkward.

2. Another connected issue i found during scroll and collapse was the alternate row style applied in design time got applied for all consecutive rows. (image2,png)

3.When I expand a node close to the middle/bottom of the screen and view the data and collapse it back, there is an empty space (apprx 2 rows size) appearing above that particular node..((Image3.png)
The same thing doenst happen when i scroll up with or with out collapsing the node.
Seems the row content is not redrawn properly.

Expecting a quicker reply.

thanks and regards...
NK

GridView

answered on 08 Jan 2010

1 answer

83 views

Opening Dialog Radwindow

Hello,

I am trying to open a dialog radwindow but nothing appears. The window should appear after the user clicks on a button in the primary window. My application is an XBAP.

Any help would be appreciated.

Thanks

GridView

answered on 07 Jan 2010

3 answers

111 views

Select Row

Hello

I want to let the user find a row by the value of a specific column
this is the scenario-
the user write a text in a TextBox
and click search
then I take the text and find the row

    
            (((System.Data.DataView)RadGridView1.ItemsSource).Table.Select("ActivityName like '%" + txtSearch.Text + "%' ")[0])

now I want to select this row
how can I do it?

GridView

answered on 07 Jan 2010

1 answer

156 views

Weird scrolling style issue

This one I have to class as wierd.

Version: WPF Q3 2009 SP1 2009.3.1208.35

I have a GridView with 7 predefined columns.
3 of the columns have HeaderCellStyle defined. They do not have ControlTemplates. I've only applied a few property setters to change the visual appearance.

The application starts off with a large size, so there are no scroll bars visible.
First issue is here. Sizing the application Window down by grabbing the bottom right thumb, the scroll bars do no properly appear. I ahe to move the mouse about to get the horizontal scroll bar to appear, and it doesn't appear to be based fully on the GridView's visible size.

Second issue. If you resize the Window, and make it as narrow as possible, and then widen it again, the styling on the last column (Receipt Application) has changed. This column was defined without a style, and now it's somehow gotten the style from the column next to it.

Thrid issue. If you are somehow able to size the Window down to half it's initial width, and have a Horizonal Scroll Bar. Now, click on the Horizontal Scroller, and moved it left and right quickly. The other two columns that didn't have styling, now magically have the styling applied!

    
            namespace WpfApplication_DataGrid  
        
            {  
        
                using System;  
        
                using System.Collections.Generic;  
        
                using System.Collections.ObjectModel;  
        
                using System.Windows;  
        
                using System.Windows.Data;  
        
                using Telerik.Windows.Controls;  
        
                /// <summary>  
        
                /// Interaction logic for Window8.xaml  
        
                /// </summary>  
        
                public partial class Window8 : Window  
        
                {  
        
                    public Window8()  
        
                    {  
        
                        InitializeComponent();  
        
                        Binding binding;  
        
                        ObservableCollection<Receipt> list2 = new ObservableCollection<Receipt>();  
        
                        list2.Add(new Receipt("HELLO", 1123, 456, 1, 8, DateTime.Today, "B"));  
        
                        list2.Add(new Receipt("HELLO", 2123, 456, 2, 7, DateTime.Today, "B"));  
        
                        list2.Add(new Receipt("HELLO", 3123, 456, 3, 6, DateTime.Today, "C"));  
        
                        list2.Add(new Receipt("HELLO", 4123, 456, 4, 5, DateTime.Today, "C"));  
        
                        list2.Add(new Receipt("WORLD", 1123, 456, 5, 4, DateTime.Today, "A"));  
        
                        list2.Add(new Receipt("WORLD", 2123, 456, 6, 3, DateTime.Today, "B"));  
        
                        list2.Add(new Receipt("WORLD", 3123, 456, 7, 2, null, "C"));  
        
                        list2.Add(new Receipt("WORLD", 4123, 456, 8, 1, DateTime.Today, "D"));  
        
                        list2.Add(new Receipt("WORLD", 4123, 456, 8, 1, DateTime.MinValue, "D"));  
        
                        binding = new Binding();  
        
                        binding.Source = list2;  
        
                        uxRadGridView.SetBinding(RadGridView.ItemsSourceProperty, binding);  
        
                    }  
        
                }  
        
            }

    
            namespace WpfApplication_DataGrid  
        
            {  
        
                using System;  
        
                using System.ComponentModel;  
        
                public class Receipt : INotifyPropertyChanged  
        
                { 
        
                    #region fields  
        
                    string _source;  
        
                    double _amount;  
        
                    double _associatedAmount;  
        
                    double _allocatedAmount;  
        
                    double _availableAmount;  
        
                    DateTime? _receiptEffectiveDate;  
        
                    string _receiptApplication; 
        
                    #endregion  
        
                    #region ctor  
        
                    public Receipt()  
        
                    {  
        
                    }  
        
                    public Receipt(string source, double amount, double associatedAmount, double allocatedAmount, double availableAmount, DateTime? receiptEffectiveDate, string receiptApplication)  
        
                    {  
        
                        Source = source;  
        
                        Amount = amount;  
        
                        AssociatedAmount = associatedAmount;  
        
                        AllocatedAmount = allocatedAmount;  
        
                        AvailableAmount = AvailableAmount;  
        
                        ReceiptEffectiveDate = receiptEffectiveDate;  
        
                        ReceiptApplication = receiptApplication;  
        
                    } 
        
                    #endregion  
        
                    #region properties  
        
                    public string Source  
        
                    {  
        
                        get { return _source; }  
        
                        set 
        
                        {  
        
                            _source = value;  
        
                            NotifyPropertyChanged("Source");  
        
                        }  
        
                    }  
        
                    public double Amount  
        
                    {  
        
                        get { return _amount; }  
        
                        set 
        
                        {  
        
                            _amount = value;  
        
                            NotifyPropertyChanged("Amount");  
        
                        }  
        
                    }  
        
                    public double AssociatedAmount  
        
                    {  
        
                        get { return _associatedAmount; }  
        
                        set 
        
                        {  
        
                            _associatedAmount = value;  
        
                            NotifyPropertyChanged("AssociatedAmount");  
        
                        }  
        
                    }  
        
                    public double AllocatedAmount  
        
                    {  
        
                        get { return _allocatedAmount; }  
        
                        set 
        
                        {  
        
                            _allocatedAmount = value;  
        
                            NotifyPropertyChanged("AllocatedAmount");  
        
                        }  
        
                    }  
        
                    public double AvailableAmount  
        
                    {  
        
                        get { return _availableAmount; }  
        
                        set 
        
                        {  
        
                            _availableAmount = value;  
        
                            NotifyPropertyChanged("AvailableAmount");  
        
                        }  
        
                    }  
        
                    public DateTime? ReceiptEffectiveDate  
        
                    {  
        
                        get { return _receiptEffectiveDate; }  
        
                        set 
        
                        {  
        
                            _receiptEffectiveDate = value;  
        
                            NotifyPropertyChanged("ReceiptEffectiveDate");  
        
                        }  
        
                    }  
        
                    public string ReceiptApplication  
        
                    {  
        
                        get { return _receiptApplication; }  
        
                        set 
        
                        {  
        
                            _receiptApplication = value;  
        
                            NotifyPropertyChanged("ReceiptApplication");  
        
                        }  
        
                    } 
        
                    #endregion  
        
                    #region Interface INotifyPropertyChanged  
        
                    public event PropertyChangedEventHandler PropertyChanged;  
        
                    private void NotifyPropertyChanged(string propertyName)  
        
                    {  
        
                        if (PropertyChanged != null)  
        
                            PropertyChanged(this, new PropertyChangedEventArgs(propertyName));  
        
                    } 
        
                    #endregion  
        
                }  
        
            }

    
            <Window x:Class="WpfApplication_DataGrid.Window8" Title="Window8" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                xmlns:local="clr-namespace:WpfApplication_DataGrid" 
        
                xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" 
        
                Height="700" Width="900" WindowStartupLocation="CenterScreen">  
        
                <Window.Resources> 
        
                    <LinearGradientBrush x:Key="ColumnHeaderBackgroundBrush" EndPoint="0.494,0.889" StartPoint="0.494,0.028">  
        
                        <GradientStop Color="#FFE7F1FF" Offset="0"/>  
        
                        <GradientStop Color="#FFD2E6FF" Offset="0.4"/>  
        
                        <GradientStop Color="#FFC7DFFF" Offset="0.4"/>  
        
                        <GradientStop Color="#FFC7DFFF" Offset="1"/>  
        
                    </LinearGradientBrush> 
        
                    <SolidColorBrush x:Key="CellSeperatorBorderBrush" Color="#FFB3B3B3"/>  
        
                    <Style x:Key="GridViewHeaderCellStyle" TargetType="{x:Type telerik:GridViewHeaderCell}">  
        
                        <Setter Property="Background" Value="{StaticResource ColumnHeaderBackgroundBrush}" /> 
        
                        <Setter Property="BorderBrush" Value="{StaticResource CellSeperatorBorderBrush}"/>  
        
                        <Setter Property="BorderThickness" Value="0,0,1,0"/>  
        
                        <Setter Property="Foreground" Value="Black"/>  
        
                        <Setter Property="FontWeight" Value="Light"/>  
        
                        <Setter Property="FontSize" Value="12"/>  
        
                        <Setter Property="DropMarkPen">  
        
                            <Setter.Value> 
        
                                <Pen Thickness="60">  
        
                                    <Pen.Brush> 
        
                                        <LinearGradientBrush EndPoint="1,0.5" StartPoint="0,0.5">  
        
                                            <GradientStop Color="#00F4F5F6" Offset="0"/>  
        
                                            <GradientStop Color="#B2808080" Offset="0.5"/>  
        
                                            <GradientStop Color="#00F4F5F6" Offset="1"/>  
        
                                        </LinearGradientBrush> 
        
                                    </Pen.Brush> 
        
                                </Pen> 
        
                            </Setter.Value> 
        
                        </Setter> 
        
                        <Setter Property="SnapsToDevicePixels" Value="True"/>  
        
                    </Style> 
        
                </Window.Resources> 
        
                <Grid> 
        
                    <telerik:RadGridView xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"   
        
                                AutoGenerateColumns="False" 
        
                                x:Name="uxRadGridView" telerik:StyleManager.Theme="Office_Black">  
        
                        <telerik:RadGridView.Columns> 
        
                            <telerik:GridViewDataColumn IsFilterable="False" DataMemberBinding="{Binding Source}" /> 
        
                            <telerik:GridViewDataColumn IsFilterable="False" DataMemberBinding="{Binding Amount}" /> 
        
                            <telerik:GridViewDataColumn IsFilterable="False" Header="Associated Amount" DataMemberBinding="{Binding AssociatedAmount}" HeaderCellStyle="{StaticResource GridViewHeaderCellStyle}"/>  
        
                            <telerik:GridViewDataColumn IsFilterable="False" Header="Allocated Amount" DataMemberBinding="{Binding AllocatedAmount}" HeaderCellStyle="{StaticResource GridViewHeaderCellStyle}"/>  
        
                            <telerik:GridViewDataColumn IsFilterable="False" Header="Available Amount" DataMemberBinding="{Binding AvailableAmount}" HeaderCellStyle="{StaticResource GridViewHeaderCellStyle}"/>  
        
                            <telerik:GridViewDataColumn IsFilterable="False" Header="Receipt Effective Date" DataMemberBinding="{Binding ReceiptEffectiveDate}" HeaderCellStyle="{StaticResource GridViewHeaderCellStyle}"/>  
        
                            <telerik:GridViewComboBoxColumn IsFilterable="False" UniqueName="ReceiptApplication" Header="Receipt Application" DataMemberBinding="{Binding ReceiptApplication}" /> 
        
                        </telerik:RadGridView.Columns> 
        
                    </telerik:RadGridView> 
        
                </Grid> 
        
            </Window>

GridView

answered on 07 Jan 2010

6 answers

282 views

GridView highlighting the matching rows on Filter.

Hello,

I have a Filter Row in my GridView's header. The normal behaviour of filter is to hide the unmatching rows.
But my requirement is to highlight the matching rows and unmatched rows will still be shown. I am using the following function to do that. I am trying to set the IsSelected Property of the matching records to true, which i hoped will highlight the row. But it is not doing that. Please help.

    
             public void ApplySelect(object sender)  
        
                    {  
        
                        try  
        
                        {  
        
                            var senderElement = sender as FrameworkElement;  
        
                            FilterRowDescriptor newDescriptor = new FilterRowDescriptor();  
        
                            newDescriptor.LogicalOperator = FilterCompositionLogicalOperator.And;                  
        
                            int idx=0;  
        
                            foreach (MainPage.BuyHeadView bhRow in this.grid.Items)  
        
                            {  
        
                                TextBox txt = senderElement as TextBox;  
        
                                if (bhRow.CampaignName.StartsWith(txt.Text.Trim()))  
        
                                {  
        
                                    this.grid.Records[idx].IsSelected = true;  
        
                                }  
        
                                idx++;                      
        
                            }  
        
                            //headerRow.ParentGrid.FilterDescriptors.Remove(headerRow.ParentGrid.FilterDescriptors.Where(fd => fd is FilterRowDescriptor).FirstOrDefault());  
        
                            //headerRow.ParentGrid.FilterDescriptors.Add(newDescriptor);  
        
                        }  
        
                        catch  
        
                        {  
        
                        }  
        
                    }

GridView

answered on 07 Jan 2010

1 answer

72 views

GridView

Hello
I want to split the Colums in the gridview to 2 parts, that one is fixed and the other is horizenltal scroled

how can i control those attribute by code in xaml or c#

1 color
2 Start position

GridView

answered on 07 Jan 2010