Questions on UI for WPF Forum

0 answers

101 views

Hallo,

I got problems with the GridView performance.

I have a simple WPF Application with one GridView and one refresh button. The GridView has 4 columns and 100 rows. The ItemsSource of the GridView is an Observable Collection of the type RowViewModel. RowViewModel has 4 properties (1 DateTime and 3 strings). When I push the refresh button, the ItemsSource is cleared and filled again with different objects. On my machine thit takes about 800 to 1000 ms. Here is the XAML code:

<Grid>

<telerik:RadGridView

HorizontalAlignment="Left"

Name="radGridView1"

VerticalAlignment="Top"

Height="561" Width="546">

</telerik:RadGridView>

<telerik:RadButton Content="Refresh" Height="23" HorizontalAlignment="Left" Margin="646,152,0,0" Name="radButton1" VerticalAlignment="Top" Width="75" Click="radButton1_Click" />

</Grid>

And here is the code behind:

private const int RowCount = 100;

private int _counter = 0;

private readonly string[] _codes = new [] {"Code Blue", "Code Orange", "Code Yellow", "Code Cyan"};

public MainWindow()

{

InitializeComponent();

CreateRowViewModels();

}

public ObservableCollection<RowViewModel> Rows { get; set; }

private void CreateRowViewModels()

{

if (Rows == null)

{

Rows = new ObservableCollection<RowViewModel>();

radGridView1.ItemsSource = Rows;

}

DateTime d;

string name;

if (_counter % 2 == 0)

{

d = new DateTime(2012, 1, 1);

name = "Mr. Black";

}

else

{

d = new DateTime(2012, 6, 1);

name = "Mr. White";

}

Rows.Clear();

for (var i = 0; i < RowCount; i++)

{

var row = new RowViewModel

{

Name = name + " " + (i + 1),

Date = d,

Code = _codes[i % 4],

Error = ""

};

Rows.Add(row);

}

_counter++;

}

private void radButton1_Click(object sender, RoutedEventArgs e)

{

CreateRowViewModels();

}

Nothing special here, why does it take about 1 second to refresh the ItemsSource collection?

Thank you for the help,

Eugen

GridView

asked on 30 Sep 2012

0 answers

94 views

Problem in flow direction when value is right to left

Hi,,,
I have demo version of Telerik and i used Scheduler view, when I change value of flow direction ,right to left , of my windows, and when I drag a inserted appointment, it does `t normally drag ,

What can I do for fix the problem?

Thanks a lot

PS : Please see the attachment for more detail.

ScheduleView

asked on 30 Sep 2012

5 answers

114 views

Show entire week without scrolling

Hi,

I'm using the TV Schedule example with it's group headers as a base and I need to show the entire week fir into a window without scrolling. I have set the visible days to 7, but I need to change the size / height of the group rows (dynamically if possible) so the the whole week will show without the user needing to scroll. I tried using a viewbox, but that looks ugly and stretched. What properties do I need to set to achieve this?

Thanks,
Geoffrey

ScheduleView

answered on 29 Sep 2012

1 answer

77 views

monthView to dayView/weekView takes 25s

Hi there,

I have a project with a RadScheduleView.

The viewDefinitions are added dynamically when I first open the App. There are 5 of them : day / week / workweek / month / timeLine by default.

In this configuration, when the activeViewDefinition is the MonthView and I click either on a "weekHeader" or a "dayHeader" to go to the corresponding week or day, it takes up to 25s.

Interestingly though, going from WeekView to DayView by clicking on a "dayHeader" in the WeekViewDefinition is almost instantaneous. So I deduced it has something to do with the way the view is displayed (weekView and DayView share the same layout, if I am not mistaken)

I have used DotTrace to try and find where the problem lies, and it appears almost all of the 25s are spent in MeasureOverride() (see attached screenshot) So my guess seems to be right, but I am puzzled as to what could produce such a loss of time on my part.

Do you know of something that could cause such a behavior ?

(nb: I use the metro Theme on the RadScheduleView)

ScheduleView

answered on 29 Sep 2012

1 answer

130 views

CellEditTemplate binding

I'm attempting to bind a RadListBox within a CellEditTemplate but for some reason it isn't working. I've attempted to bind a RadListBox outwith the GridView and it works fine.

<telerik:GridViewDataColumn Header="Actionees" UniqueName="ACT856">

<telerik:GridViewDataColumn.CellEditTemplate>

<DataTemplate>

<telerik:RadListBox ItemsSource="{Binding Path=Actionees}" DisplayMemberPath="FullName" SelectedValuePath="IdentityId" />

</DataTemplate>

</telerik:GridViewDataColumn.CellEditTemplate>

</telerik:GridViewDataColumn>

Am I missing something?

GridView

answered on 29 Sep 2012

3 answers

154 views

Styling and support for Touch

I'm building a business application in WPF that needs to be usable from a kiosk's touch screen. No real need for fancy multitouch or gestures, but I do need basic controls that handle touch events and the ability to style the controls to make them larger for better usability.

Can the Telerik WPF controls handle touch events and easily be styled appropriately? Is there anything like the MetroTouch skin for WPF? Anyone else using the Telerik WPF controls for a basic touch-able application?

Thanks!
Jeremy

General Discussions

answered on 29 Sep 2012

1 answer

153 views

Reordering Expander inside the Stackpanel

Hi All,

I want to Reorder the RasExpander Control with the help of DragDropManager inside the Stackpanel. Can you please guide me how to do this? Please help me with the sample if possible.

Thanks,
Sakthi

Expander

answered on 29 Sep 2012

1 answer

193 views

Get WPF RadGridDataGrid row and cell

Hello, I would like to know how I can get the value of a particular row / column in RadGrdiView of Wpf
like a telerik web gridview (findcontrol)
Actually I can get the value in a DataGrid wpf, that is my function

Private Function GetCellValue(ByRef dataGrid As DataGrid, ByVal row As Integer, ByVal column As Integer) As String
Dim temprow As DataGridRow
Dim rowview As DataRowView
Dim cellValue As String
GetCellValue = ""
Try
temprow = dataGrid.ItemContainerGenerator.ContainerFromIndex(row)
rowview = temprow.Item
cellValue = rowview.Item(column).ToString
Catch ex As Exception
cellValue = ""
End Try
Return cellValue
End Function

But when I do the same with telerik, I cant, that give the next error
Unable to cast object of type 'Telerik.Windows.Controls.GridView.GridViewRow' to type 'System.Windows.Controls.DataGridRow'.
if you can give me a solution, will be grateful

GridView

answered on 29 Sep 2012

3 answers

586 views

File upload/download control

Hi,

Is there a file upload/download control in wpf suite? (something like a textbox with spinner to represent upload/download. And a cancel button to cancel upload/download)

Thanks
Santosh

General Discussions

answered on 28 Sep 2012

1 answer

99 views

Virtualization?

Do you have an example of using Virtualization with the WPF PropertyGrid?

PropertyGrid

answered on 28 Sep 2012