Questions on UI for WPF Forum

1 answer

315 views

Removing Selected Cell Border

How can I disable cell selection or remove selected cell border in GridView.

GridView

answered on 10 Aug 2012

1 answer

106 views

UTC Time Search in Filter

Hello,

I have a RadGridView with a GridViewDataColumn which has a DateTime type in UTC time. In the filter I changed the DateTime picker to show time also. However, the filter times are off by a few hours since the filter works on local time while the displayed times are in UTC.

Is there any way I can tell the filter to change the filter critrion to UTC time ?

Thanks,
Chait

GridView

answered on 10 Aug 2012

4 answers

274 views

TimeLine as VideoEditing Tool

Hello,

I was wondering if the Timeline control is good for using as an video editor. I need a line that cross verticaly the component, which I can use to seek for the current crossed files (displayed as events). I can find the corretly position by using the start_time of the event and the current position of that line and display exactly the part of the file that i need, but.I can't figure out how do I insert that crossed line into the component.

Another solution might be using the TimeBar component instead, but with that component I can't browse more than one stream in the same time, or I did't find an way of doing that.

Thanks!

Eng. Marcelo

TimeLine

answered on 10 Aug 2012

2 answers

233 views

I need to be able to deselect

Hi,
I have a combobox witch has one or more items declared like this ->

<telerik:RadComboBox Grid.Column="1" Grid.Row="5" Margin="5" Height="25" Width="250" Name="cmbDynamicDim" HorizontalAlignment="Left" DisplayMemberPath="Name"

ItemsSource="{Binding DynamicDims}" SelectedItem="{Binding SelectedField,UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" >

But when I select an item there is no way of un-choosing the comboboxitem. Is there any property that creates an empty dummy row ? Or do I need to have an "empty" row in my collection ?

Thanks and best regards
Kristján

ComboBox

answered on 10 Aug 2012

1 answer

87 views

Error in "Display multiple PDF dynamically"

Hi Team,
I am using Red-book control for showing PDF file. My project requirement is to display multiple file dynamically. But after display one file when I want to load another file in Radbook I am getting error:-
"Object reference not set to an instance of an object."
Error occurs at Telerik.Windows.Documents.UI.FixedDocumentSinglePagePresenter.LoadPageContent.AnonymousMethod__1()

Please help me to find out the solution.

Thanks,
Mandeep

Book

answered on 10 Aug 2012

2 answers

109 views

Roerder Rows with Row number problem

Hi,

I have a GirdView that could reorder rows by drag and drop which also have a row number column. I got it all working by following the latest Demo.

However, after reordering rows, the row numbers are not updated properly (see attached image). Could anyone help me fix this?

Thanks.

GridView

answered on 10 Aug 2012

5 answers

154 views

Twoway binding crashes when I change datacontext

I am using twoway binding to dynamically change the color of one of my user controls and to set the initial selected color. It's structured as the following (way simplified):

<RadGridView x:Name="T" ItemsSource="{Binding storage, Mode=OneWay}">

<GridViewColumn>

<GridViewColumn.Template>

<ColorPicker SelectedColor="{Binding Color, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />

</...>

And the associated C# code:

void func(object sender) {

this.DataContext = sender;

}

I am getting a nullpointer exception when I try to change the DataContext of the GridView IF AND ONLY IF the GridView has elements in it. Is there a way to get around changing the source of a gridview that has twoway bindings?

Best, Jin

GridView

answered on 10 Aug 2012

1 answer

181 views

ColumnGroups MVVM way

Currently I am doing the ColumnGroups from the code behind like this.

grid.ColumnGroups.Add(new GridViewColumnGroup
{
Name = groupName,
Header = groupName
});
gridColumn = new GridViewDataColumn();
gridColumn.ColumnGroupName = groupName;
grid.Columns.Add(gridColumn);

But I want to do the same thing using MVVM way. Do you guys have an example project that does this using MVVM?

Any help is greatly appreciated.

GridView

answered on 10 Aug 2012

1 answer

80 views

Selecting a date doesn't make it appear in the control

I'm working with a somewhat older version of the Telerik controls (2011 Q3), but I would think this would still work. I have the control setup to use DatePicker for the InputMode. If I click on the calendar and navigate to some date and click on it, then the calendar disappears, but the date I selected isn't in the control. Checking the control's SelectedValue, it is null, so it didn't accept the date I clicked upon, either.

I'm guessing that I'm doing something wrong, have left out something in the XAML, or something. Here's the relevant XAML:

<telerik:RadDateTimePicker Grid.Column="1" Grid.Row="4" DateTimeWatermarkContent="Enter DOB" HorizontalAlignment="Center" Margin="0" Name="radDOB"

VerticalAlignment="Center" GotFocus="radDOB_GotFocus" SelectionChanged="radDOB_SelectionChanged" InputMode="DatePicker"

MinWidth="80"/>

DateTimePicker

answered on 09 Aug 2012

3 answers

295 views

How to specify a PointTemplate for a Cartesian Series dynamically

My ChartView has series which are created dynamically (programmatically). Each of these series need to be a colour that is also only known at runtime. How do I go about doing this?

ChartView

answered on 09 Aug 2012