Questions on UI for WPF Forum

3 answers

154 views

Computed Columns / Derived Columns

Can I have a column whose value is derived from the difference of a column in two rows. Like:

For example I have following radgrid:

Row_Id Rank Derived Col

1 5 0

2 7 2

3 7 0

4 3 -4

Derived col = TableRow.Rank - TableRow(-1).Rank

Is it possible using bindings?

GridView

answered on 02 Jun 2010

1 answer

259 views

Scroll button only visible after window resizing

Hi,

I came across this scenario that appears to be a bug. When I bind a series of items to a RadTabControl that is not wide enough to show them the scroll buttons do not appear until I resize the window. This is the simplest way to duplicate:

XAML:

<Window x:Class="Workbench.RadTabControlTest"

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

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

xmlns:Controls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation" Title="RadTabControlTest" Height="400" Width="500">

<Grid>

<Grid.RowDefinitions>

</Grid.RowDefinitions>

<Button

Width="125"

Height="25"

Click="Button_Click">Set Items</Button>

<Controls:RadTabControl

x:Name="tabs"

Width="250"

Height="150"

Grid.Row="1"

/>

</Grid>

</Window>

And the code behind:

public partial class RadTabControlTest: Window

{

public RadTabControlTest()

{

InitializeComponent();

}

private void Button_Click(object sender, RoutedEventArgs e)

{

tabs.ItemsSource = new[] {"one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"};

}

I am using the latest release and the project is .NET 4.0.

Am I doing something wrong?

Cheers,

Jose

TabControl

answered on 02 Jun 2010

1 answer

111 views

DateTime Entry

Which control allows me to enter a Date and Time in order to input or display a DateTime value?

DatePicker

answered on 02 Jun 2010

1 answer

131 views

[Solved] Explicitly Inserting LineBreaks in ColumnHeaders

How can I explicitly indicate that I want a linebreak to be at a certain point in GridViewDataColumn header attribute?

    
            <telerik:GridViewDataColumn Header="Happy<LineBreakHere>(Days)"/>

I want the text to be centered with (Days) appearing underneath "Happy", and I want to do this without implementing any Wrapping/ColumnWidth tricks.

GridView

answered on 02 Jun 2010

3 answers

158 views

[Solved] ToolTip Style

Is there some type of ToolTipStyle of a GridViewDataColumn? I'd like to change the background color and border color of the tooltip of some columns, but not others.

GridView

answered on 02 Jun 2010

27 answers

819 views

Excel format issus

Hi There

When I try to export the data inside gridview table to an excel file with "xls" file extension a warning message is shown like "different format than specified by the file extension"(Office 2007 is installed in the PC). However, when I change the file extension to xlsx it does not work at all.

Can anyone help me to figure out the problem?

Many thanks

Bo

Bellow is the code

Many thanksBoBellow is the code

string content = string.Empty;
            string extension = "xls";
            content = radGridView1.ToHtml(true);
            string path = String.Format("Export.{0}", extension);

            if (File.Exists(path))
            {
                File.Delete(path);
            }

            using (FileStream fs = File.Create(path))
            {
                Byte[] info = Encoding.Default.GetBytes(content);
                fs.Write(info, 0, info.Length);
            }

Process.Start(path);

GridView

answered on 01 Jun 2010

4 answers

180 views

_CreateDelegate not found

I get the following error when I try creating a custom class and wire up to an event in the CellTemplate of a RadGridView. Can anyone explain why this is? I know it is not my code because when I use the custom class in the host page directly, it works.

'MyHyperlink_OnClick' value cannot be assigned to property 'OnClick' of object 'WpfBrowserApplication3.MyHyperlink'. Method 'WpfBrowserApplication3.Page1._CreateDelegate' not found. Error at object 'WpfBrowserApplication3.MyHyperlink' in markup file 'WpfBrowserApplication3;component/page1.xaml' Line 14 Position 24.

I would attache a sample, but the site is not allowing me. Thanks.

- Rashad Rivera
OmegusPrime.com

GridView

answered on 01 Jun 2010

1 answer

244 views

Compile Source Code

Dear Telerik-Team,

we bought RadControls WPF and Silverlight (Sourcecode included). We can´t compile the telerik sourcecode because of used telerik preprocessors. Is there a possibility to compile the sourcecode?

Best Regards

Bernhard

General Discussions

answered on 01 Jun 2010

1 answer

92 views

Grid cells are getting disabled for grid with few columns freezed

Hi,

I have a grid with 15-20 columns generated dynamically. First 2 columns are freezed. Third column is disabled. When we try to scroll the grid horizontally(with first two columns freezed), some of the cells are getting disabled. If we keep on scrolling grid horizontally(to left and right), the columns are getting enabled/disabled. The behaviour is not uniform too. Sometimes, cells are not getting disabled.

Please help.

Thanks and Regards,
Norbert John

GridView

answered on 31 May 2010

5 answers

319 views

How to disable and make readonly

HI..
I set the property to be Readonly but I can still select the time.
How do I make the control readonly and disabled. There is no disable prop.
thanks again

TimePicker

answered on 31 May 2010