Questions on UI for WPF Forum

4 answers

288 views

Trend line on scatter chart

Is it possible to do a trend line on a scatter chart?

Chart

answered on 21 Jan 2011

4 answers

579 views

How to show and Hide Grid Column at Runtime

Hi

I want to Know, How can implement the Show and Hide of the particular Column / s at Runtime through checkbox.

Regards

GridView

answered on 21 Jan 2011

1 answer

107 views

Display datetime picker on button click

DateTimePicker

answered on 21 Jan 2011

4 answers

207 views

Dataformat when editing cells

Hi,
I'm trying to display the value in a cell when editing double values without displaying decimals, see screenshot -> the edit cell format seems to be overridden.

So my question is can I easily format the editable cell ?

All my GridViewDataColumn's have this dataformat:
col.DataFormatString = "{0:N0}";

Thanks
Kristján

GridView

answered on 20 Jan 2011

5 answers

84 views

Binding to a 40,000 records?

I have not tried WPF version in a real project, but would a WPF grid perform well with a dataset of about 40,000 records?
The datasource could be a dataset or List <> collection of 40,000 records.

Thanks
Sunil

GridView

answered on 20 Jan 2011

1 answer

81 views

GridViewComboBoxColumn: How can I show the correct Item?

Hi there,

I have in my Grid a GridViewComboBoxColumn and want to show there the Name of a type from the table which is shown in the grid.

This is the column:

<telerik:GridViewComboBoxColumn Header="Typ" IsFilterable="False" IsGroupable="False" IsSortable="False" ShowDistinctFilters="False" UniqueName="Typ" DataMemberBinding="{Binding Typ}" />

This is how I fill the Names into the Combobox:

private void FillTypItems()

{

List<TypItem> TypListe = new List<TypItem>();

TypItem _TypItem = new TypItem();

_TypItem.Typ = 1;

_TypItem.TypText = "Ganzzahl";

TypListe.Add(_TypItem);

_TypItem = new TypItem();

_TypItem.Typ = 2;

_TypItem.TypText = "Dezimalzahl";

TypListe.Add(_TypItem);

_TypItem = new TypItem();

_TypItem.Typ = 3;

_TypItem.TypText = "Zeichenkette";

TypListe.Add(_TypItem);

_TypItem = new TypItem();

_TypItem.Typ = 5;

_TypItem.TypText = "Logisch";

TypListe.Add(_TypItem);

((GridViewComboBoxColumn)this.rgvUebergabeparameter.Columns["Typ"]).DisplayMemberPath = "TypText";

((GridViewComboBoxColumn)this.rgvUebergabeparameter.Columns["Typ"]).ItemsSource = TypListe;

}

And this is the DataItem for the TypeNames (TypText):

public class TypItem

{

int _Typ;

public int Typ

{

get

{

return _Typ;

}

set

{

_Typ = value;

}

string _TypText;

public string TypText

{

get

{

return _TypText;

}

set

{

_TypText = value;

}

The Combobox is filled correctly, but the Item to the number from table, will not be shown.
What do I have done wrong?

GridView

answered on 20 Jan 2011

1 answer

308 views

Load-On-Demand tree View does not refresh when a new item is added

I have a treeview (see image attached) that does not refresh when I add an item. We use the WPF MVVM framework.
When the tree loads the first time, the treeview works perfectly. When clicking on each item, it successfully loads its sub item correctly. Now if i decide to add a sub_item to a level that I selected, For example let's say i want to add a Client vist date to treatments. So my treatment Level would be selected, I would click an add button and will create a Client Visit. After completion, I want the tree to refresh (using that load-on-demand functionality) and show me my new added Client Visit under the treatment I selected. unfortunately, this does not work. with the Load-On-Demad functionality. It seems to work only ONCE and that is when the tree is first loaded. After that it never triggers any of item_prepared, load_on_demand events until restart the application to see my changes. Please could you help in showing me, using MVVM WPF (not silverlight) how:
1) to store the item path
2) After adding an item to the treeview, refresh the tree (using load on-demand) to display the new item that was added
Thank you. This is needed so urgently. I would appreciate a fast response. Thank you again

TreeView

answered on 20 Jan 2011

3 answers

224 views

Issue with binding header value to template

Hi, I have a header template for my TabControl (code below), but when i try to set binding to Header property of a tab (at least i think so) I don't get nothing...
What i would like is when i create new tab (let say from code ... something like :



MainTabControl.Items.Add(new RadTabItem() {Header = "HeaderText", Content = new MyControl()});

), that property of this header would bi binded as i stated in xaml....

Thank you for all your help!

<telerik:RadTabControl x:Name="MainTabControl" DockPanel.Dock="Bottom" Margin="0">

<telerik:RadTabControl.ItemContainerStyle>

<Style TargetType="telerik:RadTabItem">

<Setter Property="HeaderTemplate">

<Setter.Value>

<DataTemplate>

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="*" />

<ColumnDefinition Width="Auto" />

</Grid.ColumnDefinitions>

<TextBlock Grid.Column="0" Text="{Binding Header}" />

<Button Grid.Column="1" Margin="0 0 0 0" Content="x" Width="15"

Height="15" HorizontalAlignment="Center"

VerticalAlignment="Center" RE:EventHelper.EnableRoutedClick="True"

/>

</Grid>

</DataTemplate>

</Setter.Value>

</Setter>

</Style>

</telerik:RadTabControl.ItemContainerStyle>

</telerik:RadTabControl>

TabControl

answered on 20 Jan 2011

16 answers

493 views

GridViewComboBoxColumn Group By and Filter issues

Hello,

we have a RadGridView that is bound (in an MVVM scenario) to a property containing the main data for the grid...
Furthermore three columns have an ItemsSourceBinding to three different properties respectively to specify the "SelectedValueMemberPath" and "DisplayMemberPath".

Unfortunately when we want to group these columns (Drag and Drop onto the top of the grid), the grid shows the Id, i.e. "SelectedValueMemberPath" rather than the Name (DisplayMemberPath).

The same problem can be seen when we want to filter the column and the "Filter Window" shows only the SelectedValueMemberPath rather than the desired DisplayMemberPath.

We currently use version 2010.1.603.35 of the telerik controls....

here is some of our current code:

    
                        <telerik:RadGridView x:Name="radBerthingSlots" 
        
                            AutoGenerateColumns="False" 
        
                            IsEnabled="True" 
        
                            ItemsSource="{Binding BerthingSlots}" 
        
                            SelectedItem="{Binding SelectedBerthingSlot, Mode=TwoWay}"   
        
                            CanUserDeleteRows="False" 
        
                            <telerik:RadGridView.Columns> 
        
                                <telerik:GridViewComboBoxColumn Header="Shipper Name" DataMemberBinding="{Binding ShipperId}"   
        
                                                                SelectedValueMemberPath="Id" DisplayMemberPath="Name" 
        
                                                                ItemsSourceBinding="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=my:BerthingSlotView, AncestorLevel=1}, Path=ViewModel.Shippers}" /> 
        
                            </telerik:RadGridView.Columns> 
        
                        </telerik:RadGridView>

alternatively we tried to set some stuff in the code behind:

    
                                <telerik:GridViewComboBoxColumn Header="Shipper Name" DataMemberBinding="{Binding ShipperId}"   
        
                                                                SelectedValueMemberPath="Id" DisplayMemberPath="Name" 
        
                                                                Initialized="ShipperComboBox_Initialized"/>

    
                    private void ShipperComboBox_Initialized(object sender, EventArgs e)  
        
                    {  
        
                        var cbx = sender as GridViewComboBoxColumn;  
        
                        cbx.ItemsSourceBinding = new Binding { Source = this.ViewModel, Path = new PropertyPath("Shippers") };  
        
                    }