Questions on UI for WPF Forum

3 answers

237 views

GridView Hierarchy with two childTableDefinitions.

I have a GridView hierarchy with two child tables, of which I want to show only a few chosen columns .

In Q2, it worked fine with the following code.

    
            GridViewTableDefinition tdPayment = new GridViewTableDefinition();  
        
            GridViewTableDefinition tdDetail = new GridViewTableDefinition();  
        
            tdPayment.DataSource = MySalePayments = GetSalePaymentsData();  
        
            tdPayment.AutoGenerateFieldDescriptors = false;  
        
            TableRelation tr = new TableRelation();  
        
            tr.FieldNames.Add(new FieldDescriptorNamePair("Receipt", "Receipt"));  
        
            tdPayment.Relation = tr;  
        
            GridViewDataColumn paymentType = new GridViewDataColumn();  
        
            paymentType.UniqueName = "SalePaymentType";  
        
            paymentType.Header = "PaymentType";  
        
            paymentType.DataType = typeof(short);  
        
            GridViewDataColumn amount = new GridViewDataColumn();  
        
            amount.UniqueName = "Amount";  
        
            amount.Header = "Amount";  
        
            amount.DataType = typeof(decimal);  
        
            tdPayment.FieldDescriptors.Add(paymentType);  
        
            tdPayment.FieldDescriptors.Add(amount);  
        
            tdDetail.AutoGenerateFieldDescriptors = false;           
        
            tdDetail.DataSource = MySaleDetails = GetSaleDetailData();  
        
            tdDetail.Relation = tr;  
        
            GridViewDataColumn itemId = new GridViewDataColumn();  
        
            itemId.UniqueName = "ItemId";  
        
            itemId.Header = "ItemId";  
        
            itemId.DataType = typeof(string);  
        
            GridViewDataColumn saleQty = new GridViewDataColumn();  
        
            saleQty.UniqueName = "SaleQuantity";  
        
            saleQty.Header = "Sale Qty";  
        
            saleQty.DataType = typeof(short);  
        
            GridViewDataColumn unitPrice = new GridViewDataColumn();  
        
            unitPrice.UniqueName = "UnitPrice";  
        
            unitPrice.Header = "Price";  
        
            unitPrice.DataType = typeof(decimal);  
        
            GridViewDataColumn discount = new GridViewDataColumn();  
        
            discount.UniqueName = "Discount";  
        
            discount.Header = "Discount";  
        
            discount.DataType = typeof(decimal);  
        
            GridViewDataColumn individualDiscount = new GridViewDataColumn();  
        
            individualDiscount.UniqueName = "IndividualDiscount";  
        
            individualDiscount.Header = "Ind.Discount";  
        
            individualDiscount.DataType = typeof(decimal);  
        
            tdDetail.FieldDescriptors.Add(itemId);  
        
            tdDetail.FieldDescriptors.Add(saleQty);  
        
            tdDetail.FieldDescriptors.Add(unitPrice);  
        
            tdDetail.FieldDescriptors.Add(discount);  
        
            tdDetail.FieldDescriptors.Add(individualDiscount);  
        
            radGridViewSalesList.TableDefinition.ChildTableDefinitions.Add(tdPayment);  
        
            radGridViewSalesList.TableDefinition.ChildTableDefinitions.Add(tdDetail);

When Run in Q3, AutoGenerateFieldDescriptors was simply ignored showing all columns.

In Q3, it was suggested that I use AutoGenerateColumns of GridViewDataControl .
I was able to do it with single child table using DataLoading handler as shown in the demo source code.
But I don't know how to do it with two child tables.

GridView

answered on 16 Feb 2010

5 answers

150 views

Search / Filter Focus

I have implemented a similar search/filter as the scenario found at http://demos.telerik.com/wpf/?GridView/Search , the same behaviour occurs in my own implementation and in the demo itself.

The search while you type works perfectly when a grid row is not selected, however if a row is selected, and a search is started, the row receives the focus.

This occurs only when a matching letter is found within the selected row. The textbox looses focus, which means only the first letter is searched on.

If a match isn't found, the focus remains in the search textbox and more letters can be added to the search.

On a side note, is there any way to ensure the search textbox has the focus when the filter is removed? Eg. When a user deletes his search, the grid immediatly takes focus from the textbox.

Thank you,

A Marshall

GridView

answered on 16 Feb 2010

1 answer

101 views

All minimized items in a single column

Hi!

I would like to have all my minimized items in a single column (but multiple rows) under the maximized item.

Right now if i configure the TileView to show the minimized items below the maximized item it will do the opposite; that is put all minimized items in a single row.

Is this possible with the TileView?

Thanks // David

TileView

answered on 16 Feb 2010

2 answers

58 views

What component is the Demo app using for pages

Hi All,

Whlist I love the style and functionallity of the WPF Telerik components the 1 thing that I like the most is the zoom in - out and slide animation that occurs between pages... How can I replicate this, is this a Telerik component or just some very clever code?

Thanks!

Xavier.

General Discussions

answered on 16 Feb 2010

5 answers

202 views

Exception during grouping: "Specified method is not supported"

Hi,

We're trying to do a simple two-level grouping in a RadGridView:

                                // Add grouping according to device, then parameter category         
                        MainGrid.GroupDescriptors.Add(         
                            new GroupDescriptor()         
                            {         
                                Member = "OwnerContainer",         
                                SortDirection = ListSortDirection.Ascending         
                            });         
                        MainGrid.GroupDescriptors.Add(         
                            new GroupDescriptor()         
                            {         
                                Member = "ParameterCategory",         
                                SortDirection = ListSortDirection.Ascending         
                            });         

This has worked great in Q3 2009. Now that we've moved over to Q3 SP2, we're getting an exception when the grid loads:

"Specified method is not supported"

This appears to be associated with a call to a Reset function on a LINQ wrapper to our CollectionView. The CollectionView itself hasn't changed.

Any idea what causes this and how to overcome it?

Thanks,

yonadav

GridView

answered on 15 Feb 2010

1 answer

127 views

RadTreeView edit not comitting

    
                public class DataSource : DependencyObject 
        
                { 
        
                    public List<DataSource> Children { get; set; } 
        
                    public string Name { get; set; } 
        
                    public DataSource() 
        
                    { 
        
                        Children = new List<DataSource>(); 
        
                    } 
        
                }

    
                <Window.Resources> 
        
                    <local:DataSource x:Key="DataSource"> 
        
                        <local:DataSource.Children> 
        
                            <local:DataSource Name="1"> 
        
                                <local:DataSource.Children> 
        
                                    <local:DataSource Name="2"> 
        
                                        <local:DataSource.Children> 
        
                                            <local:DataSource Name="3"> 
        
                                                <local:DataSource.Children> 
        
                                                    <local:DataSource Name="4"/> 
        
                                                </local:DataSource.Children> 
        
                                            </local:DataSource> 
        
                                        </local:DataSource.Children> 
        
                                    </local:DataSource> 
        
                                </local:DataSource.Children> 
        
                            </local:DataSource> 
        
                        </local:DataSource.Children> 
        
                    </local:DataSource> 
        
                </Window.Resources> 
        
                <telerik:RadTreeView ItemsSource="{Binding Path=Children, Source={StaticResource DataSource}}" IsEditable="True"> 
        
                    <telerik:RadTreeView.ItemTemplate> 
        
                        <HierarchicalDataTemplate ItemsSource="{Binding Path=Children}"> 
        
                            <TextBlock Text="{Binding Path=Name}"/> 
        
                        </HierarchicalDataTemplate> 
        
                    </telerik:RadTreeView.ItemTemplate> 
        
                    <telerik:RadTreeView.ItemEditTemplate> 
        
                        <DataTemplate> 
        
                            <TextBox Text="{Binding Path=Name, Mode=TwoWay}"/> 
        
                        </DataTemplate> 
        
                    </telerik:RadTreeView.ItemEditTemplate> 
        
                </telerik:RadTreeView>

The above is the smallest reproduction I can find of this issue.
Editing any node (by pressing F2) brings up the TextBox as it should. However that TextBox is empty and a BindingExpression error occurs (as visible in the output window):

System.Windows.Data Error: 40 : BindingExpression path error: 'Name' property not found on 'object' ''String' (HashCode=557208335)'. BindingExpression:Path=Name; DataItem='String' (HashCode=557208335); target element is 'TextBox' (Name=''); target property is 'Text' (type 'String')

Making the Name property a proper DependencyProperty has no effect. The DataItem seems to be getting changed. Curiously, if you change DataSource to NOT extend DependencyObject (ie make it just a CLR object), it works as expected. I cannot change my real hierarchy this way. Am I doing something wrong or should I log in PITS?

TreeView

answered on 15 Feb 2010

1 answer

120 views

Adding a margin around selected item

I am trying to put a margin around the selected item to keep a separation between it and the items on either side. I have set up a trigger to change the margins but that doesn't seem to be working. Is there some way to put a margin in between the selected item and other items? So for instance, I would like a consistent 10px space between every item whether it's selected or not.

Carousel

answered on 15 Feb 2010

1 answer

147 views

GridView / Prism question

Hi,

I have a gridview using the </gridView:RadGridView.RowDetailsTemplate> to display finer details about the item in the grid row. This works fine. inside this template I also have a button which has an attached command:

<Button Margin="2,2,2,2" Padding="5,5,5,5" Style="{DynamicResource SimpleButton}" HorizontalAlignment="Stretch" VerticalAlignment="Bottom"

x:Name="DeleteTaskButton" FontWeight="Normal" Foreground="#505050" FontSize="14" FontFamily="Corbel"

Content="Delete Task Schedule"

commands:Click.Command="{Binding DeleteTaskCommand}"

commands:Click.CommandParameter="{Binding Id}"/>

Here I can pass the Id of the Item to my backing ViewModel and remove from the collection. However, this currently doesn't work because the DelegateCommand is part of the ViewModel NOT the object being rendered by the DataTemplate. Obviously I could add the command to the object but I don't like it as it gets quite messy, my base object has already had INotifyPropertyChanged added to it. Ideally what I would like is a way have the button command in my ViewModel picking up the command from the DataTemplate, and also if possible I would like to be able to retrieve the SelectedIndex of the GridView.

Thanks, Mark

GridView

answered on 15 Feb 2010

3 answers

302 views

SelectionChanged event and Fields

Hi,

maybe i'm blind but i don't find a solution, how to get the value of a certain column after selecting a row.

Documentation of the RadGridView for WPF (SelectionChanged event) :

    
            Private Sub radGridViewSelection_SelectionChanged(ByVal sender As Object, ByVal e As Telerik.Windows.Data.SelectionChangeEventArgs)  
        
                    label1.Content = radGridViewSelection.SelectedRecord.Fields("CustomerID").ToString  
        
            End Sub

I tried to use it as described, but "Fields" isn't a Member of "Telerik.Windows.Data.Record"!?

Thanks for help
Martin

Edit: In another Thread i found, that "CurrentRecord.Fields" doesn't exist anymore in the current release (the documentation is not very helpful). But i still do not understand, how to get the value in a specific column of the selected row.

GridView

answered on 15 Feb 2010

2 answers

1.0K+ views

Rebinding/refreshing GridView

Hi,

I'm getting my data for the GridView from an xml-document, and I'm binding it to the grid just as in the demo-application (in the GetXmlData() method).

However, I cannot seem to figure out how to rebind/refresh the grid programatically.

This is how I've done it so far:

    
            radGridViewDataBinding.FilterDescription = null; 
        
            radGridViewDataBinding.GroupDescriptions.Clear(); 
        
            radGridViewDataBinding.SortDescriptions.Clear(); 
        
            radGridViewDataBinding.Columns.Clear(); 
        
            radGridViewDataBinding.AutoGenerateColumns = true; 
        
            radGridViewDataBinding.ItemsSource = null; 
        
            radGridViewDataBinding.ItemsSource = GetXmlData();

Absolutely nothing happens though. I'm sure I'm missing something obvious, but what?

GridView

answered on 14 Feb 2010