Questions on UI for WPF Forum

4 answers

131 views

I found two problems with zooming a line chart:

1) Clipping of data points

Let's say I have 5 points at x = 1..5. If I zoom to x = [1.5, 3.5] the line is only drawn for the points with x = 2,3,4. What i would expect is, that the line is interpolated from x = 1 to x = 2 and drawn starting with x = 1.5...

This is not only true for zooming but for drawing in general (e.g. manual axis).

If no data point is with the specified range, the line is not drawn at all. Instead i would expect the visible sector of the line is drawn.

2) Visibility

I set the visibility of some series using

                    _diagram.DefaultView.ChartArea.DataSeries[myIndex].Definition.Visibility = false         

However, after zooming or scrolling, all series are visible again.

3) If at least one series has no data in a zoom range, zooming is not possible at all. (see 1)

Please fix this in an upcoming release.

Kind regards

Hartmut

Chart

answered on 07 Dec 2010

1 answer

65 views

Programmatic Multi_Col Grouping Problem

hey! guys:
I created a datatable by code and set it to gridView's itemsource, everything looks good ,I could grouping cols my drag it to group panel.
then I created a button, in button's behind code, I created some group descriptors and added them into grid's group descriptors, Oops,
the problem is coming , the grid is not grouped as I expected, some rows were missing.
After I deleted the group cols by closing the grouping button and drag cols into group panel, the group is ok again.

GroupDescriptor descriptor1 = new GroupDescriptor();

descriptor1.Member = "Country";

descriptor1.SortDirection = ListSortDirection.Ascending;

this.gridView.GroupDescriptors.Add(descriptor1) ;

GroupDescriptor descriptor2 = new GroupDescriptor();

descriptor2.Member = "Name";

descriptor2.SortDirection = ListSortDirection.Ascending;

this.gridView.GroupDescriptors.Add(descriptor2) ;

The codes is same as demo. Did I miss something ?

GridView

answered on 07 Dec 2010

5 answers

113 views

Control template for item mimimize and maximize state

Dear Team ,
Is it possible in radtileviewitem to create custom template for minimize and maximize states.

Kind Regards

TileView

answered on 06 Dec 2010

2 answers

56 views

Demo link for TreeListView Control in usinh WPF

Hi..

Do you have any Demo link for TreeListView Control in using WPF ?

TreeListView

answered on 06 Dec 2010

5 answers

148 views

Grid Row Highlight Wrong

Not quite sure how to detail this problem as it does not happen right away but only after the application has done some work, I'm still trying to isolate the issue but thought I'd post what I know.

Eventually the grid starts displaying a lot of wrong data especially when another window overlays the application and then is removed, the application window does not refresh until the mouse is moved over the screen. The odd part is that if you move the mouse down the screen is correct but when you move the mouse up the screen will display incorrect information.

In the simplest form the highlight line breaks up, but only when the mouse is moved up the screen. Its always correct when you move the mouse down the screen.

The attached image shows this condition where the current link and the highlight line are broken across multiple screen rows; again only when the mouse is moved up the screen, if its brought down over the rows they are then correctly refreshed.

Any clues on where I start looking for the problem.

After returning to the application it now displays the firefox screen in the body of the window as shows in the second attached png file. If you minimize the screen and restore it the display is correct but as soon as you move the window about the display it returns to the incorrect view - with the firefox window showing. Moving the mouse over the window causes it to be updated with the correct information. But the minimize/restore/move sequence again returns to junk.

GridView

answered on 06 Dec 2010

1 answer

204 views

WPF styles

I'm a newbie with WPF and I copied some code into my Resource Dictionary so that all standard TextBoxes and Buttons would get the radcontrols styles. I found it in another thread.

<Style TargetType="Button"

BasedOn="{StaticResource {telerik:ThemeResourceKey ThemeType=telerik:Windows7Theme, ElementType=Button}}" />

<Style TargetType="ListBox"

BasedOn="{StaticResource {telerik:ThemeResourceKey ThemeType=telerik:Windows7Theme, ElementType=ListBox}}"

/>

<Style TargetType="TextBox" 
         BasedOn="{StaticResource {telerik:ThemeResourceKey ThemeType=telerik:Windows7Theme, ElementType=TextBox}}" />

<Style TargetType="CheckBox" 
         BasedOn="{StaticResource {telerik:ThemeResourceKey ThemeType=telerik:Windows7Theme, ElementType=CheckBox}}" />

Now, I found that I can customize the error template using the following code.

<Style TargetType="Control" x:Key="ValidationErrorTemplate">

<Style.Triggers>

<Trigger Property="Validation.HasError" Value="True">

<Setter Property="ToolTip"

Value="{Binding RelativeSource={x:Static RelativeSource.Self},

Path=(Validation.Errors)[0].ErrorContent}" />

</Trigger>

</Style.Triggers>

</Style>

<Style TargetType="TextBox" BasedOn={StaticResource ValidationErrorTemplate}" />

How do I combine the two TextBox styles so that I can keep the Error Template at a common level (Control), and use it for all controls. Can I change the Error template style to be based on the Telerik ThemeResourceKey for Control? then base all other controls on it instead?

General Discussions

answered on 06 Dec 2010

1 answer

141 views

Simple full-text search not working due to exception

Hello,
I want simple full-text search on grid and with your api it seem to be very easy.

var cd = new CompositeFilterDescriptor(){LogicalOperator = FilterCompositionLogicalOperator.Or};

foreach (var columnMeta in Grid.Columns)

{

cd.FilterDescriptors.Add(new FilterDescriptor(columnMeta.UniqueName, FilterOperator.Contains, SearchText, false));

}

Grid.FilterDescriptors.Add(cd);

Problem arise when column type is not String. For Int or DateTime it raises exception.

Are you aware of this exception behaviour?
How to create FilterDescriptor not depend on column type, and how to search "formated value visible in grid" (not value in DTO)?

Stack:
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
   at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
   at System.String.System.IConvertible.ToInt32(IFormatProvider provider)
   at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
   at Telerik.Windows.Data.Expressions.FilterDescriptorExpressionBuilder.CreateValueExpression(Type targetType, Object value, CultureInfo culture) in c:\Dev3\branches\2010.Q3.Release\Core\Data\Expressions\Filtering\FilterDescriptorExpressionBuilder.cs:line 131
   at Telerik.Windows.Data.Expressions.FilterDescriptorExpressionBuilder.CreateBodyExpression() in c:\Dev3\branches\2010.Q3.Release\Core\Data\Expressions\Filtering\FilterDescriptorExpressionBuilder.cs:line 38

GridView

answered on 06 Dec 2010

1 answer

104 views

Telerik:RadGridView with telerik:GridViewSelectColumn

Helllo Reader,
I am using the trail version of RadControls toolkit. When i work with Telerik:RadGridView Control with telerik:GridViewSelectColumn in WPF Application and m trying to access the Checked rows of this Telerik:RadGridView, there is no way to access the telerik:GridViewSelectColumn checked property....

Please help me.......

GridView

answered on 06 Dec 2010

2 answers

114 views

Unable to group gridview

Hi,
I'm new to Telerik and have just downloaded the latest WPF trial.
I'm having trouble with the Gridview (version 2010.3.1110.35).
I'll post the XAML below, but I'm populating from an observableCollection pulled from a WCF service.
The grid populates OK, but I cannot group the columns please can you advise.
The window is binding to an ViewModel.

I've tried another sample wher I create some objects on the fly, putting them into an observableCollection and binding to it ... and
the grouping has worked fine.

Many thanks,
Joseph.

<Window x:Class="VisionRT.CRM.WPF.TelerikMainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d"
        DataContext="{Binding Main, Source={StaticResource Locator}}"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        xmlns:telerikData="clr-namespace:Telerik.Windows.Data;assembly=Telerik.Windows.Data"
        xmlns:telerikControls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls"
        xmlns:System="clr-namespace:System;assembly=mscorlib"
        d:DesignHeight="390"
        d:DesignWidth="729"
        Width="650" Loaded="Window_Loaded">
 
    <Grid>
        <telerik:RadGridView HorizontalAlignment="Stretch" Margin="12,62,12,0" Name="radGridView1"                             
                             ItemsSource="{Binding Path=ContactList, Mode=TwoWay}"
                             AutoGenerateColumns="False"
                             IsSynchronizedWithCurrentItem="True"
                             VerticalAlignment="Top" Height="248">
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn Header="Title" DataMemberBinding="{Binding Title}"  Width="*" IsGroupable="True" >
                    <telerik:GridViewDataColumn.AggregateFunctions>
                        <telerikData:CountFunction Caption="Count: " />
                    </telerik:GridViewDataColumn.AggregateFunctions>
                </telerik:GridViewDataColumn>
                <telerik:GridViewDataColumn Header="First Name" DataMemberBinding="{Binding FirstName}" Width="*"   IsGroupable="True" />
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>
    </Grid>
</Window>

GridView

answered on 06 Dec 2010

4 answers

121 views

EDITABLE GRIDVIEW

I need a editable rad grid view so that i can update / insert data in to my database through rad grid view only.
I need it today only Urgent.
Please help me as soon as possible

GridView

answered on 06 Dec 2010