Questions on UI for WPF Forum

0 answers

155 views

disable specific row in gridview

Hi..

I am using Telerik Rad Wpf grid.

I want to disable some records by binding with linq entities.

Suppose I have an entity named Title which has an active field. I have below converter which is mentioned in Resources.

<

my:UserControl.Resources>

<my1:BooleanConverter x:Key="RowEnableConverter"/>

</my:UserControl.Resources>

And in Grid control , there is a datacolumn.

<

telerik:GridViewDataColumn Header="Document Name" DataMemberBinding="{Binding DOCUMENTDSC, UpdateSourceTrigger=PropertyChanged}" Width="1.5*" IsFilterable="False" IsEnabled="{Binding ACTIVE,Converter={StaticResource RowEnableConverter}, UpdateSourceTrigger=PropertyChanged}" />

Now please see the below example:

1 Ahmed 25

2 Ali 35

3 Maifs 25

Now i want to disable/readonly 2nd record which is

2 Ali 35.

How would i ?
Suggest please.

GridView

asked on 05 Oct 2011

0 answers

107 views

Problem with RadGridViewCommands.MoveFirst

Hi Support

Move First Command when the focus is in last column donot work, is it bug? Can I fix it?

Thanks in advance
Mehri

GridView

asked on 05 Oct 2011

2 answers

388 views

Real-time Data via ObservableCollection

Hi,

I have a radgridview that is bound to an observablecollection containing 16 properties, one for each column of the radgridview. I have an WCF service that I poll every second, updating the observablecollection and thus, updating the radgridview. I'm doing this with a dispatchertimer that fires a backgroundworker. This works quite smoothly, although larger result sets (more than 50 rows) cause the GUI to freeze and/or the radgridview to "blink" momentarily. Those, I'm assuming are limitations of WPF's threading abilities. Anyhow, the largest problem I have is that on radgridview's that scroll vertically, when a user scrolls down, the grid scrolls all the way back to the top whenever the collection changes.

I'm using Row and Column virtualization, if that makes any difference.

Is there a way to make the grid not scroll to the top when the collection changes??

GridView

answered on 05 Oct 2011

3 answers

105 views

Runtime Row Expand

Hi

I want expand some row at run time in gridview and treeview. Please help me.

Thanks
Vijay Kumar

GridView

answered on 05 Oct 2011

0 answers

86 views

Problem with Re-Binding

Hi,

I have a self referencing grid view in a output.xaml and having an event in the ViewModel.

Calling this event while adding new items in the other screen (to add the Grid view Headers).

Add couple of Headers and click the Output tab to view the values in the Grid View. Now its showing the grid with parent child relationship and the headers.

Now if I go and add a new header then the event will be called in the ViewModel of the output and binding the grid to show the new headers and the relevant values for the column. Here I am facing problem that while re-binding it takes time and binding the grid without the self referencing hierarchy. it just binds all the rows in the datatable property as the parent node.

Anybody knows where i have made the mistake.

Thanks,
Ramasamy

GridView

asked on 05 Oct 2011

1 answer

346 views

Define ColumnSortDescriptor with custom Comparer(T)

In my application, I have a column in my RadGridView that is bound to a property of type 'System.Type'. When attempting to sort by this column, I get a System.ArgumentException{"At least one object must implement IComparable."}. I am not interested in wrapping the System.Type class at all to implement the IComparable(T) interface and would like to be able to provide a function delegate to the ColumnSortDescriptor to sort the types by name instead of using the default comparer as I could with a normal list.

Function CompareTypeByName(ByVal x As System.Type, ByVal y As System.Type) As Integer

If x Is Nothing Then

If y Is Nothing Then

Return 0

Else

Return -1

End If

Else

If y Is Nothing Then

Return 1

Else

Return x.Name.CompareTo(y.Name)

End If

End Function

Dim typeList As New List(Of System.Type)

typeList.Add(GetType(String))

typeList.Add(GetType(Int32))

typeList.Sort(AddressOf CompareTypeByName)

Is there a way to do this (or something like it) currently?

Thanks,
Jason

GridView

answered on 04 Oct 2011

0 answers

116 views

How to synchronize a List when the content of the GridView bound to it changed

I wish to make a List of my custom objects available for the user to modify with RadGridView.
What should I do?Any example?Thx in advance.

GridView

asked on 04 Oct 2011

1 answer

267 views

How to collapse toolbar?

I have a toolbar filled with buttons:

<telerik:RadToolBar >

<telerik:RadDropDownButton >

<StackPanel Orientation="Horizontal">

<Image Source="/Fdj.Eurp.GuiMain;component/Graphics/User.png" ></Image>

<TextBlock Text="aaa" ></TextBlock>

</StackPanel>

<telerik:RadDropDownButton.DropDownContent>

<StackPanel Orientation="Vertical" Name="spUserAccountPanel">

<telerik:RadButton Content="bbb"></telerik:RadButton>

<telerik:RadButton Content="ccc"></telerik:RadButton>

...

However after clicking one of the buttons, the whole menu does not close itself. How can I enforce it?

ToolBar

answered on 04 Oct 2011

1 answer

149 views

Automatically Selecting Day of Week

Hello All,

We have a requirement where the SelectedDate must be a Saturday only. We are using the MVVM pattern. I am able to change the SelectedDate property to the Saturday, however when I re-open the calendar, the last day of week the user clicked is still highlighted. How can I remove the highlighting, even though the SelectedDate has already been changed properly.

For example, say the user clicks Oct 11 (a Tuesday), I want Oct 15 (Saturday) to be highlighted, not Oct 11.

As I mentioned, the actual SelectedDate property is set just fine, it's the highlighted date I can not figure out how to remove.

I can provide a simple test project if needed.

Here is a screenshot of the issue. Note the Date in the control, and what's highlighted.
http://i865.photobucket.com/albums/ab216/CA-Psycho/Public/CalendarIssue.png

Thanks,
Chris

DateTimePicker

answered on 04 Oct 2011

1 answer

185 views

Selection Start/End

Hi,

can anyone tell me if it's possible for the SelectionStart/SelectionEnd properties to have 1 day of range by default, of course afetr that, the user can have the possibility the expand this range?

Thank's

TimeBar

answered on 04 Oct 2011