Questions on UI for WPF Forum

7 answers

221 views

Highlight row on mouse over and double click event

Hi,

I want highlight one row on PivotGrid on mouse over.
In addtion, when user double click on that row, I want to execute some code.

Can anyone help me?

PivotGrid

answered on 22 Nov 2013

2 answers

123 views

Can I include/exclude certain points from a SeriesMapping Itemsource from being drawn

Suppose I have a the following class

public class DataRow

{

public int X { get; set; }

public int Y { get; set; }

public bool Exclude;

}

I want to plot this on a RadChart using a seriesmapping, which I do like this.

ObservableCollection<DataRow> SeriesSource = new ObservableCollection<DataRow>();

SeriesMapping series = new SeriesMapping();

series.ItemsSource = source;

series.ItemMappings.Add(new ItemMapping("X", DataPointMember.XValue));

series.ItemMappings.Add(new ItemMapping("Y", DataPointMember.YValue));

Is there any way that I can include/exclude data points being plotted based on the value of 'Exclude'? I wish to be able to include/exclude certain points from the plotted line.

The only other solution I can think of is to scan through the collection and create a second collection just containing members which aren't excluded. This doesn't seem very efficient though.

Chart

answered on 22 Nov 2013

4 answers

188 views

Expand in win 7 with plus minus sign

Hi,

I populated a treeview control dynamically with child nodes. In Win 7 this treeview has arrow marks for expand and collapse. I want to change it to traditional + and - symbols since our users are more comfortable with that. I have tried different themes but it didn't change this behavior.Please help.

TreeView

answered on 22 Nov 2013

6 answers

609 views

Clearing document from viewer causes NullReferenceException

I was working with the previous version of this control but for some reason it would not render some of our pdf files. I upgraded to the latest version but now I am running into a new issue. I can't seem to clear the document from the viewer. I have attached some sample code that will reproduce the NullReferenceException errors I am getting.

WPF Code:

<Window x:Class="TelerikPDFViewerTest.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

Title="MainWindow" Height="550" Width="525">

<Window.CommandBindings>

<CommandBinding Command="Open" CanExecute="Open_CanExecute" Executed="Open_Executed" />

<CommandBinding Command="Close" CanExecute="Close_CanExecute" Executed="Close_Executed" />

</Window.CommandBindings>

<Grid>

<telerik:RadPdfViewer Name="pdfViewer" Margin="3,30,3,3" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" />

<telerik:RadButton Name="btnOpen" Content="Open" Margin="3,3,0,0" VerticalAlignment="Top" HorizontalAlignment="Left" Width="72" Command="Open" />

<telerik:RadButton Name="btnClose" Content="Close" Margin="0,3,0,3" VerticalAlignment="Top" HorizontalAlignment="Right" Width="72" Command="Close" />

</Grid>

</Window>

C# Code:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

namespace TelerikPDFViewerTest

{

/// <summary>

/// Interaction logic for MainWindow.xaml

/// </summary>

public partial class MainWindow : Window

{

private System.IO.FileStream fs = null;

public MainWindow()

{

InitializeComponent();

}

private void Open_CanExecute(object sender, CanExecuteRoutedEventArgs e)

{

e.CanExecute =(System.IO.File.Exists("benchbook.pdf"));

e.Handled = true;

}

private void Open_Executed(object sender, ExecutedRoutedEventArgs e)

{

fs = new System.IO.FileStream("benchbook.pdf", System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Delete);

pdfViewer.DocumentSource = new Telerik.Windows.Documents.Fixed.PdfDocumentSource(fs);

}

private void Close_CanExecute(object sender, CanExecuteRoutedEventArgs e)

{

e.CanExecute = (this.pdfViewer.Document != null);

e.Handled = true;

}

private void Close_Executed(object sender, ExecutedRoutedEventArgs e)

{

this.fs.Close();

//Get NullReferenceException in both cases

//First try to set document source = null

this.pdfViewer.DocumentSource = null;

//Or try just releasing the document

//this.pdfViewer.Document = null;

}

I could not attach the pdf I was using but any pdf will reproduce the problem. Please let me know if there is some workaround for this.

Ideally it would be great if the PdfViewer had a Clear() function that would release all resources referenced and displayed.

Thanks,
Lee Keel

PDFViewer

answered on 21 Nov 2013

5 answers

93 views

Column Headers Along the Side

Hi,

Is it possible to transform the RadGridView by 90degrees so that the column headers are displayed down the side? I have a lot of headers but not much data so it makes sense to flip the orientation.

Thanks for your help!

GridView

answered on 21 Nov 2013

7 answers

211 views

How do I make it so that when lowest value is saved, if the user doesn't change it?

I'm working on a new WPF application, and am making extensive use of the RadMaskedNumericInput control. I've defined a couple of validation classes based upon the ValidationRule class. I'm using this in every instance where I use a RadMaskedNumericInput control. I want it such that if the RadMaskedNumericInput control shows up and the user does nothing with it, then the lowest value is saved back to the database. This isn't happening. What's happening is a null is being saved to the database. Now, I know that I could define a default value in the table definition, and perhaps that's what I'll have to do, but I'd like to know if there's a way to make the RadMaskedNumericInput control automatically save the lowest value (in all my cases that happens to be a 0, but it could technically be any numeric value) to the backend database. You see, it's weird because the RadMaskedNumericInput control is showing a 0 in it, when it comes up, but I've found that in testing if I do nothing with that control, or just tab to it and then past it, a null is what's saved to the database. That's counterintuitive.

MaskedInput (Numeric, DateTime, Text, Currency)

answered on 21 Nov 2013

3 answers

749 views

Close\End editing mode

i'm using RadGridView in my application, for displaying all users registered in my app, also i can edit them. When i started editing and wanted to move to another screen i need to "close" or "end" editing mode programmatically(on my ViewModel). Help me how to handle this.

GridView

answered on 21 Nov 2013

2 answers

131 views

Parameter count mismatch

Hi

The dataform works well when AutoGenerateFields is true, but once i turn it off and supply it with 3 different DataTemplates it throws the Exception "Parameter count mismatch", the Object implements IDataErrorInfo, IEditableObject and the problem seems to be the
IDataErrorInfo, any ideas
thanks

   at System.Reflection.RuntimeMethodInfo.InvokeArgumentsCheck(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.Reflection.RuntimePropertyInfo.GetValue(Object obj, BindingFlags invokeAttr, Binder binder, Object[] index, CultureInfo culture)
   at System.Reflection.RuntimePropertyInfo.GetValue(Object obj, Object[] index)
   at Telerik.Windows.Data.ItemPropertyInfoExtensions.GetValue(ItemPropertyInfo itemProperty, Object item) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Core\Data\ItemProperties\ItemPropertyInfoExtensions.cs:line 105

DataForm

answered on 21 Nov 2013

0 answers

45 views

Aggregated footer with LoadOnDemand not working

Hi folks.

I have a treelist control on my page where I load the items dynamicaly. At each section I'd like to have aggregated sums at the bottom. I thing I have all set correctly regarding online demos but the result footer are all empty.

I use this code:

<telerik:RadTreeList ID="rtlData" AllowLoadOnDemand="true" runat="server" AutoGenerateColumns="false"
OnChildItemsDataBind="RadTreeList_ChildItemsDataBind" OnNeedDataSource="RadTreeList_NeedDataSource"
DataKeyNames="CssClass,ParentId" ParentDataKeyNames="CssClass,ParentId" OnItemCreated="RadTreeList_ItemCreated"
OnItemDataBound="RadTreeList_ItemDataBound" ShowFooter="true">
<Columns>
<telerik:TreeListBoundColumn DataField="ProductCatL3" UniqueName="ProductCatL3" HeaderText="Produkt L3">
</telerik:TreeListBoundColumn>
<telerik:TreeListBoundColumn DataField="ProductCatL2" UniqueName="ProductCatL2" HeaderText="Produkt L2">
</telerik:TreeListBoundColumn>
<telerik:TreeListBoundColumn DataField="ProductCatL1" UniqueName="ProductCatL1" HeaderText="Produkt L1">
</telerik:TreeListBoundColumn>
<telerik:TreeListBoundColumn DataField="State" UniqueName="State" HeaderText="Stav" DataType="System.Decimal" DataFormatString="{0:C2}" Aggregate="Sum">
</telerik:TreeListBoundColumn>
<telerik:TreeListBoundColumn DataField="Avg1Month" UniqueName="Avg1Month" HeaderText="Průměr 1 měsíc" DataFormatString="{0:C2}" Aggregate="Avg">
</telerik:TreeListBoundColumn>
<telerik:TreeListBoundColumn DataField="Avg3Months" UniqueName="Avg3Months" HeaderText="Průměr 3 měsíce" DataFormatString="{0:C2}" Aggregate="Avg">
</telerik:TreeListBoundColumn>
<telerik:TreeListBoundColumn DataField="ApprovedLimit" UniqueName="ApprovedLimit" HeaderText="Schválený limit" DataFormatString="{0:C2}" Aggregate="Sum">
</telerik:TreeListBoundColumn>
<telerik:TreeListBoundColumn DataField="CssClass" UniqueName="Css" HeaderText="CSS" Visible="false">
</telerik:TreeListBoundColumn>
<telerik:TreeListBoundColumn DataField="ParentId" UniqueName="ParentId" HeaderText="ParentId" Visible="false">
</telerik:TreeListBoundColumn>
</Columns>
</telerik:RadTreeList>

What am I doing wrong that no footer are calculated and it only shows empty fields?

Sincerely
Scarlaxx

TreeListView

asked on 21 Nov 2013

5 answers

464 views

Strange scroll behaviour

Hello!

I need real-time update.
When I updated properties, everything was ok, but there were problems with sorting, filtering and grouping.
According to your demo, I start to replace whole object.
Everything works fine, but scroll's behaviour becomes very strange.

There is example: Sample

1. If you scroll grid for a while, you will see scroll "jumps" sometimes.. Here it is small jump, but in my app it is more noticeable.

2. If there are enough columns for horizontal scroll, it will also jump from right side, and it would be very difficult to use last column.

What should I do?

Thanks.

GridView

answered on 20 Nov 2013