Questions on UI for WPF Forum

1 answer

106 views

I have created the following RadTreeView:








<Style TargetType="telerik:RadTreeViewItem" x:Key="RadTreeViewItemStyle">
    <Setter Property="CheckState" Value="{Binding Path=CheckState, Mode=TwoWay, Converter={StaticResource ToggleStateToBoolean}}" />
    <Setter Property="DefaultImageSrc" Value="{Binding ListImage}" />
    <Setter Property="IsExpanded" Value="{Binding IsExpanded}" />
    <Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}" />
</Style>
<HierarchicalDataTemplate x:Key="TreeViewItemTemplate" ItemsSource="{Binding DirectoryList}" ItemContainerStyle="{StaticResource RadTreeViewItemStyle}">
    <TextBlock Text="{Binding DisplayName}"  Margin="0,0,5,0"/>
</HierarchicalDataTemplate>
  
        <telerik:RadTreeView Grid.Column="0" IsLineEnabled="True" ItemsOptionListType="CheckList" IsOptionElementsEnabled="True" IsTriStateMode="True"
                             BorderBrush="Black" BorderThickness="1" ItemsSource="{Binding RootItems}" ItemTemplate="{StaticResource TreeViewItemTemplate}"
                             IsLoadOnDemandEnabled="True" LoadOnDemand="RadTreeView_LoadOnDemand" ItemContainerStyle="{StaticResource RadTreeViewItemStyle}"
                             Background="White" Name="ExplorerTree">
        </telerik:RadTreeView>



In the codebehind, I am passing the LoadOnDemand back to my viewmodel for processing.  Everything is working exactly as it should except for when I attempt to load a node that has been selected.  If I select the node and then fire the LoadOnDemand event, it loads properly and displays all the child nodes, but then deselects the node itself.  How can I get it to stop doing this?

TreeView

answered on 31 Aug 2011

1 answer

356 views

Binding issue of Checkbox in Cell template

Hi All,
I am using MVVM pattern in my WPF application. I am using the Modal created by Entity Framework and my ViewModel class have public properties for binding. I have a specific requirements that my GridView should have two checkboxes columns and one TextBox column (all time in Edit mode) and all other remaining columns will be in ReadOnly mode. When user either Check/Uncheck these checkboxes OR change value in TextBox, I will have to do custom calculation on it (Note that for firing these calculation, I should have separate property in ViewModel so that I can fire in its SET clause....Am I right?)
I created the Grid in XAML like this.

<telerik:RadGridView Grid.Column="1" Grid.ColumnSpan="3" Grid.Row="0" Name="radGridView1" AutoGenerateColumns="False" ShowGroupPanel="False"

ItemsSource="{Binding IndicatorsList}">

<telerik:RadGridView.Columns>

<col:MyColumn Header="#" Width="35"/>

<telerik:GridViewColumn IsReadOnly="False" Header="Inc." Width="35">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<CheckBox IsChecked="{Binding IncludeIt, Mode=TwoWay}"/>

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewDataColumn Header="Indicator" DataMemberBinding="{Binding DisplayName}" IsReadOnly="True" Width="250" />

<telerik:GridViewColumn IsReadOnly="False" Header="Log" Width="35">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<CheckBox IsChecked="{Binding LOG, Mode=TwoWay}"/>

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewColumn IsReadOnly="False" Header="Lag" Width="75">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<TextBox Text="{Binding LAG, Mode=TwoWay}"/>

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewColumn Header="Del." Width="35">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<telerik:RadButton Command="{Binding Delete}" CommandParameter="{Binding}" Width="27" Height="20">

<Image Source="/finStat.MacroVal.UI;component/Images/del_small.png"></Image>

</telerik:RadButton>

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

Here is my ViewModel

public List<Indicator> IndicatorsList

{

get { return Indicators.ToList(); }

}

public bool IncludeIt

{

get { /******Here How I get current object item (i.e. Indicator) of the row so that I can return its value *********/ }

set { /******Here How I get current object item (i.e. Indicator) of the row so that I set its value *********/ }

}

I am really stuck that how can I create properties for these check boxes and TextBox. Basically how can I get specific row DataItem in checkbox property so that I can return specific field from that DataItem.
Although my actual Model object is Entity Framework Model, but here is sample model for this example.

public class Indicator

{

public bool IncludeIndicator { get; set; }

public string Name { get; set; }

public bool Log { get; set; }

public double Lag { get; set; }

}

Any help please?

GridView

answered on 31 Aug 2011

3 answers

196 views

Telerik Docking: How to disable animation for pane when IsPinned=false

I am using Telerik Docking Control 2010.3.1314.35. I have set IsPinned=False in docking RadPane, but after loading it is showing animation and then hiding it. Is there any way I can disable this animation?

General Discussions

answered on 31 Aug 2011

1 answer

48 views

problem with generate big list of elements in the pup up if mouse hover on particular cells of column

Hi,

I have tree list view, when user mouse hover on particular cells of column, I want to generate a pup up to showing elements.It is working fine, but if there are so many elements in the pup up, it will crush and stop run anything.Can anyone help?

<telerik:GridViewDataColumn Header="Name" DataMemberBinding="{Binding Name, Converter={StaticResource InsensitiveRevConverter}}">

<telerik:GridViewDataColumn.CellTemplate>

<DataTemplate>

<StackPanel Orientation="Horizontal" >

<Image Source="{Binding Image}" />

<TextBlock x:Name="ShowELementPupUp" Text="{Binding Name}" />

<Popup PlacementTarget="{Binding ElementName=ShowELementPupUp}" Style="{StaticResource TooltipPopupStyle}" PopupAnimation="Scroll" >

<telerik:RadGridView x:Name="RadGridViewOfPopUp" Visibility="{Binding ShowElements}" AllowDrop="True" AutoGenerateColumns="False" CanUserFreezeColumns="False"

CanUserInsertRows="False" CanUserReorderColumns="False" CanUserSortColumns="False"

CanUserDeleteRows="False" ShowGroupPanel="False"

GridLinesVisibility="None" RowIndicatorVisibility="Collapsed"

ShowColumnHeaders="False">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Name, Mode=OneWay}" />

<telerik:GridViewDataColumn MinWidth="20" DataMemberBinding="{Binding UnweightedPercentage, Mode=OneWay}"/>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</Popup>

</StackPanel>

</DataTemplate>

</telerik:GridViewDataColumn.CellTemplate>

</telerik:GridViewDataColumn>

Thanks,

Fendy

TreeListView

answered on 31 Aug 2011

1 answer

92 views

RadTreeListView Filters : Save and Load from a file

Hello Telerik Team,

My application has a RadTreeListView control that can be filtered by the user.

I want to save the Filter settings in a user preferences file on application shutdown and then load and apply the filters back to the RadTreeListView on application startup.

Can you help me with C# code snippets that will dump the filter settings to a text file and load them back from that file please?

I am using version 2011.1.419.35 of your WPF controls.

Thanks,
Kumar

TreeListView

answered on 31 Aug 2011

1 answer

67 views

Setting Different LegendItemMarkerShape Per Series

I'm creating a dynamic number of line series in code. Is there a way to set a different Legend Item Marker Shape for each line series?

Chart

answered on 31 Aug 2011

1 answer

78 views

Cell edits not persisting

This is by far the strangest bug I've encountered.

If I select a cell for edit using the mouse and edit the cell and then select another cell using the mouse, and edit the newly selected cell, when I save the values revert. If I perform the same edits but rather than selecting cells using the mouse I instead tab to the cell, or hit enter to move to the next row, and edit a different cell my edits persist.

On the off chance someone has encountered this or a similar kind of behavior I'm posting this in the hopes of getting this resolved.

I'm using entity framework 4 as my O.R. and like I said when I navigate using the tab key there are no problems. It's only when I make cell selections via the mouse.

Frankly I'm stumped so any suggestions as to what might be causing this will be greatly appreciated.

Thanks in advance.

GridView

answered on 31 Aug 2011

1 answer

109 views

Storing Items Property

Hi,

i was wondering if it is possilbe to save the item's property of an element using the persistence framework.
To be exact, i have a tileview with an itemssource bound to a collection of inside my viewmodel and i want to save the items and the position of the items.

PersistenceFramework

answered on 30 Aug 2011

2 answers

187 views

Nested TreeView Drag and Drop

Hi,

I have a treeview nested inside the item template of another treeview.

I would like to be able to use the preview line default behavior for drop targeting in the inner treeview.

I would like for the top level treeview to pass the previewdragended event down to the nested treeview, but only for certain payload types.

Is there any way this can be done?

Thank you,
Justin

TreeView