Questions on UI for WPF Forum

1 answer

183 views

Hello Telerik Team,
In my latest wpf project we are using telerik controls.
In my customer entry form contains 5 fields including rad color picker.

here i want to display all details in radgrid view.Whenever user adding details they give colors also.
i want to display all details in radgrid view with diffrent color.The color is user given when adding details.

how to make this?

anybody help me?

ColorPicker

answered on 15 Feb 2011

1 answer

81 views

Customizing TreeListView using our own theme

Hi there,

I follow this example to customize Rad component using custom theme (Telerik support also gave me the sample code)
http://www.telerik.com/help/wpf/common-styling-apperance-themes-custom-theme-project-telerik-approach.html

However, when I tried to do the same thing with TreeListView, the TreeListView formatting is not what I expected.
I included these xaml file from InstallationRootPath\Telerik\RadControls for WPF Q3 2010\Themes\Windows7\Themes\Windows7

RadTreeListView.xaml
TreeListViewRow.xaml

And modify Telerik.Windows.Control.xaml into this:

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

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

<ResourceDictionary.MergedDictionaries>

<ResourceDictionary Source="/MyTheme;component/Themes/Slider.xaml" />

<ResourceDictionary Source="/MyTheme;component/Themes/RadTreeListView.xaml" />

<ResourceDictionary Source="/MyTheme;component/Themes/TreeListViewRow.xaml" />

</ResourceDictionary.MergedDictionaries>

</ResourceDictionary>

But, the resulting RadTreeListView is not as I expect. Do I miss some steps to configure RadTreeListView?
Here is the link to sample code given by Telerik support from another thread.

Regards,

Arinto

TreeListView

answered on 15 Feb 2011

5 answers

162 views

validation template

Hello

How can I change the validation template of the row? (See attached picture).

How can I do validation in data Source Level and paint all the border of the grid in red if there errors?

Best regards

Ehud.

GridView

answered on 15 Feb 2011

5 answers

528 views

Drag and Drop with windows explorer

Hi,

I know the windows explorer is not part of the WPF app. However, I need to create a WPF app that can actually drag the file from the windows explorer and drop it to a textbox control. As a result, the full path of the file appears on the textbox control. Does anyone know how to do this? do I need to create a wpf window to make a windows explorer so that I can have a full control over the drag and drop?

thanks

DragAndDrop

answered on 15 Feb 2011

1 answer

84 views

Selecting Linq to SQL parent using combo

Dear Telerik forum :)

I have a parent-child relation between two business objects (defined in Linq to SQL):
- Parent: TransactionAccount
- Child: Transaction

I want to show all transactions in a grid. Each transaction shall have a combobox displaying all available transactions. I also want to use the built in grouping and sorting functionality. After a bit of struggling with different options I came up with the following solution.

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding TransactionAccount.Name, Mode=OneWay}" Header="AccountName">

<telerik:GridViewDataColumn.CellEditTemplate>

<DataTemplate>

<ComboBox

DataContext="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=telerik:RadGridView}, Path=DataContext}"

DisplayMemberPath="Name"

IsEditable="False"

IsReadOnly="True"

ItemsSource="{Binding TransactionAccounts}"

SelectedItem="{Binding CurrentTransaction.TransactionAccount, Mode=TwoWay}" />

</DataTemplate>

</telerik:GridViewDataColumn.CellEditTemplate>

<telerik:GridViewDataColumn.AggregateFunctions>

<Data:CountFunction Caption="Count: " />

</telerik:GridViewDataColumn.AggregateFunctions>

</telerik:GridViewDataColumn>

This seems to work fine but in some particular cases (that I just cannot put my finger on) the parent Name is changed. So if I have two accounts Account1 and Account2, suddenly both have the same name.

ISSUE 1: So my question is: is this really the right approach? If so why does the binding update a property on my BO? I have tried every possible way to prevent that (IsEditable, IsReadOnly etc).

ISSUE 2: Another issue is that when I have the combo open on the last row and press Enter the focus goes "somewhere else" and the only way to resume navigation with the keyboard is to click on the application.

Thanks for any input!

GridView

answered on 15 Feb 2011

3 answers

66 views

Drag&Drop between two floating window

Hi, there.

Drag&Drop between two floating windows doesn't seem to be supported in WPF yet.
Reading old posts, it suggests that it will be improved/supported post-2010 Q1.
Is it supported in the latest release?
Is there a sample how to do this?

I read a post below talking about setting,
RadDragAndDropManager.EnableNativeDrag = true;
but it doesn't seem to do anything for me.
Is there something extra I need to do to enable native drag?

While I'm at it let me ask one more question.
The question above pertains to two different windows from the same application.
I also like to support drag and drop between two different telerik application.
How is this possible?

Thanks a lot!

-Chris

DragAndDrop

answered on 15 Feb 2011

1 answer

48 views

Win 7 touch screen support for the docking control

Right now the docking control does not support the Windows 7 touch events.
Because the docking control is a container that uses a large part of the screen it would be a great candiate to have support for Windows 7 touch events, What I would like to see is move, resize, mass so you can throw a window to the other side of the screen or off the screen, and possibly also rotation for touch tablets where you have people on both sides of the tablet.

Docking

answered on 15 Feb 2011

9 answers

581 views

Select a specific cell programmatically

I would think this would be as simple as a very short line of code,however there seems to be a substantial layer of complexity involved, or so it would seem. All I need to do is set a specific data cell into edit mode (programmatically), I have the row, and I know the column but none that is of any use. More in depth documentation would be nice. All we are given in the documentation is "this.radGridView.BeginEdit();" and all that does is set the first item in the selected row into edit mode, I don't want that cell. I want the second and third. Any ideas would be great other than those referencing deprecated code. I am using the current version of Telerik WPF.

GridView

answered on 14 Feb 2011

3 answers

126 views

Trying to delete directory containing an image being displayed in carousel

Hello,
I have added a delete button to the to each item in my Carousel. When the user clicks this button, I am trying to delete a directory on the file system that contains the preview image that is being displayed in the carousel. Without surprise, I am getting an IOException saying "The process cannot access the file 'preview.png' because it is being used by another process.". Do you have any ideas or suggestions to make the RadCarousel release the lock on this .png in the directory?

Carousel

answered on 14 Feb 2011

4 answers

125 views

RadDataFilter Performance

Hello,

I'm using a RadDataFilter with a RadTreeListView and I'm seeing long stalls/loading times when creating or modifying filters.

The data is hierarchical and whenever a filter is added to the control, all the items are expanded. Modifying the criterion for the filter also takes forever once focus is gone out of the text block.

If it helps, I'm binding the Source property of my DataFilter to the Items property of the RadTreeListView, and the list view has its ItemsSource set to an observable collection of items.
The list doesn't have that many items in it, even a small list takes some time. (100+ items).

Are you guys aware of this performance issue?

Thanks
--
Matt

DataFilter

answered on 14 Feb 2011