Questions on UI for WinForms Forum

5 answers

133 views

Hi,

I have created a system in which I edit a recurrence from a web page but want to use a windows service to process the recurrences.

I have the web page creating a recurrence string as shown below:

DTSTART:20100319T000000Z
DTEND:20100319T000100Z
RRULE:FREQ=WEEKLY;INTERVAL=1;BYDAY=FR;WKST=MO

I am then in the service using that string to generate the next date in the sequence, change the recurrence string and save back into the database. In addition if the recurrence is of a finite count I need to decrease the count that is within the string.

Other than manipulating my original string and saving that back into the database how do I do this? The class structure is completely differnt to it's web counterpart which seems a little odd given that in theory the functionality should be the same.

Regards,

Jon

Scheduler and Reminder

answered on 15 Jul 2011

1 answer

324 views

Is it possible to change the +/- icons?

Is it possible to replace the standard +/- icons for exanding and collapsing nodes with my own custom images?

I found this article:

http://www.telerik.com/help/winforms/treeview-working-with-nodes-node-images.html

Which suggests this is possible. However I was struggling to find the StateImageKey property and a further article on the web seemed to suggest it was removed from the laster version of the components.

Any help gratefully recieved.

Treeview

answered on 15 Jul 2011

5 answers

2.2K+ views

How to use Transparent PNG as image for buttons?

Hi,

I have a PNG image (round button) and I want to use that as button. I have tried setting the image property to that image in radButton control but it shows the transparent area as well. My Question is how can I use round images as buttons and is the procedure for using transparent images same for all controls?

Thanks
Afraz Ali

Buttons, RadioButton, CheckBox, etc

answered on 15 Jul 2011

1 answer

131 views

Pie Chart Series Label

Hi
I'm using Pie chart to show my table statistics. My table has two column ID and Kind and i select count(ID) group by Kind. now i wanna label series by kind and their quantity in the pie (I prefer to show by percentage). My table is in dataset. The problem is that rad chart does not bind Series automatically. Please help me! Thanks

Chart (obsolete as of Q1 2013)

answered on 15 Jul 2011

1 answer

127 views

How to control list of columns that are available in Conditional Formatting Rules Manager?

Hi!

By default all properties from row object (databound item) goes to Conditional Formatting Rules Manager.

You can take a look at the attachment.

How can I select which columns should be available in this window?
Can I somehow disable conditional formatting for whole grid? How to remove this option from column header context menu?

I have found option for hidding column chooser: radGridView1.AllowColumnChooser but I cannot find similar option for hiding conditional formatting.

Regards

GridView

answered on 15 Jul 2011

1 answer

133 views

Finding the next and previous rows when grouping

We are trying to logically determine the next row to select if the currently selected row disappears. Users can select a row and perform an operation that may or may not cause this row to reappear after the grid is refreshed. We cannot determine in advance if the currently selected row will be in the refreshed dataset, and we need to perform a full refresh to display new data that may have appeared for the user. If the current row is in the refreshed dataset, that is no problem. Each row contains a unique identifier in a hidden column and we can save the unique identifier and reselect this row after refreshing.

The problem occurs if one or more of these rows disappear after a refresh. We want to move the selection to the previous row (right above the selection) as displayed to the user with sorting and grouping applied. How do we determine which row this would be?

Basically, we need to be able to answer this question: Which row is visually displayed immediately above the currently selected row?

We have it working for the most part, but the code is very complicated and still does not work exactly as we would like. For example, if the user selects the first row in a group and it disappears, the best that we can do is to go to the previous group and select the first row in that group. We would like to select the last row in the previous group. There are also problems if the entire group that contains the currenty selected row disappears.

The GridNavigator won't help because I don't actually want to select the next or previous row. I just want to know which row I would select if I were to call the SelectPreviousRow or SelectNextRow methods, find the unique identifier value in this row, and store it to select the desired row after refreshing.

GridView

answered on 15 Jul 2011

2 answers

148 views

Custom DataGridCellElement drawing its content into neighboring cell

Hi,
I am trying to implement a custom DataGridCellElement that contains a label and a hyperlink. For both elements I use RadLabelElements with different font styles.
My problem is, that if the cell is too small to hold the whole text of both elements the text of the hyperlink is drawn into the neighboring cell on the right. What is wrong with my code?
(Q1 2011 SP1, .NET 3.5)

Thanks in advance, Christoph

public class HyperlinkCellElement : GridDataCellElement

{

private RadLabelElement _headerLabel;

private RadLabelElement _linkLabel;

public HyperlinkCellElement(GridViewColumn column, GridRowElement row) : base(column, row) {}

protected override Type ThemeEffectiveType { get {return typeof(GridDataCellElement); } }

public override void Initialize(GridViewColumn column, GridRowElement row)

{

base.Initialize(column, row);

_headerLabel.Text = column.Name;

}

protected override void CreateChildElements()

{

_headerLabel = new RadLabelElement();

_headerLabel.Font = new Font(Font, FontStyle.Bold);

_headerLabel.Margin = new Padding(0, 2, 0, 0);

_headerLabel.LabelText.AutoEllipsis = true;

_headerLabel.LabelText.AutoSize = true;

_headerLabel.LabelText.AutoSizeMode = RadAutoSizeMode.Auto;

_headerLabel.LabelText.TextWrap = false;

_linkLabel = new RadLabelElement();

_linkLabel.Font = new Font(Font, FontStyle.Underline);

_linkLabel.MouseHover += (s, e) =>

{ if (Cursor.Current == Cursors.Default) Cursor.Current = Cursors.Hand; };

_linkLabel.MouseLeave += (s, e) =>

{ if (Cursor.Current == Cursors.Hand) Cursor.Current = Cursors.Default; };

_linkLabel.Margin = new Padding(0, 2, 0, 0);

_linkLabel.LabelText.AutoEllipsis = true;

_linkLabel.LabelText.AutoSize = true;

_linkLabel.LabelText.AutoSizeMode = RadAutoSizeMode.Auto;

_linkLabel.LabelText.TextWrap = false;

this.Children.Add(_headerLabel);

this.Children.Add(_linkLabel);

_linkLabel.Click += new EventHandler(_label_Click);

}

void _label_Click(object sender, EventArgs e)

{

//TODO;

}

protected override void DisposeManagedResources()

{

_linkLabel.Click -= new EventHandler(_label_Click);

base.DisposeManagedResources();

}

protected override void SetContentCore(object value)

{

_linkLabel.Text = value.ToString();

}

protected override SizeF ArrangeOverride(SizeF finalSize)

{

if (this.Children.Count == 2)

{

var label = this.Children[0];

var link = this.Children[1];

var labelWidth = Math.Min(finalSize.Width, label.DesiredSize.Width);

var linkWidth = Math.Min(link.DesiredSize.Width, finalSize.Width - labelWidth);

label.Arrange(new RectangleF(

0,

(finalSize.Height / 2) - (label.DesiredSize.Height / 2),

labelWidth,

label.DesiredSize.Height));

link.Arrange(new RectangleF(

label.Size.Width,

(finalSize.Height / 2) - (link.DesiredSize.Height / 2),

linkWidth,

link.DesiredSize.Height));

}

return finalSize;

}

public override bool IsCompatible(GridViewColumn data, object context)

{

return data is GridViewHyperlinkColumn && context is GridDataRowElement;

}

GridView

answered on 15 Jul 2011

1 answer

135 views

ScrollToWorkHours not working

Hi,

I have got a scheduler control, which scrolls to work hours perfectly well when the view is changed (Day, Week). However, when the "ShowWeekend" check box is toggled, the scroll to work time does not work.

The code:

Private Sub radSchedulerAppointmentsNavigator_ShowWeekendStateChanged(ByVal sender As Object, ByVal args As Telerik.WinControls.UI.StateChangedEventArgs) Handles radSchedulerAppointmentsNavigator.ShowWeekendStateChanged

If TryCast(Me.radSchedulerAppointments.ActiveView, SchedulerMonthView) Is Nothing Then

TryCast(Me.radSchedulerAppointments.ActiveView, SchedulerDayViewBase).RulerWidth = 43

TryCast(Me.radSchedulerAppointments.ActiveView, SchedulerDayViewBase).DayCount = 1

TryCast(Me.radSchedulerAppointments.ActiveView, SchedulerDayViewBase).AutoScrollToWorkTime = True

Dim dtStart As DateTime = DateTime.Parse(GetOptionValue("WORKINGHOURS", "Start"))

Dim tsStart As New TimeSpan(dtStart.Hour, dtStart.Minute, 0)

Dim dtEnd As DateTime = DateTime.Parse(GetOptionValue("WORKINGHOURS", "End"))

Dim tsEnd As New TimeSpan(dtEnd.Hour, dtStart.Minute, 0)

TryCast(Me.radSchedulerAppointments.ActiveView, SchedulerDayViewBase).WorkTime = New TimeInterval(tsStart, tsEnd)

If RadRadioButtonGroup.ToggleState = Enumerations.ToggleState.On Then

TryCast(Me.radSchedulerAppointments.SchedulerElement.ViewElement, SchedulerDayViewGroupedByResourceElement).ScrollToWorkHours()

Else

TryCast(Me.radSchedulerAppointments.ActiveView, SchedulerDayViewBase).RulerWidth = 45

TryCast(Me

.radSchedulerAppointments.SchedulerElement.ViewElement, SchedulerDayViewElement).DataAreaElement.ScrollView.Value = Point.Empty

TryCast(Me

.radSchedulerAppointments.SchedulerElement.ViewElement, SchedulerDayViewElement).DataAreaElement.Table.ScrollToWorkHours()

End If

End Sub

Interestingly, if the scheduler is "Grouped by resources" mode (determined by RadRadioButtonGroup.ToggleState), then the scrolling works as required. If it is in normal mode (where RadRadioButtonGroup.ToggleState <> ToggleState.On), scrolling does not work, and the scheduler view starts at 2 AM. Working hours are being determined by options - and the work time is being specified correctly from options (8 AM to 5 PM).

BTW, what does "AutoScrollToWorkTime" do? I did not have it before, but it doesn't seem to make any difference.

Similar code is being used in ActiveViewChanged event of the scheduler control.

Also, I am working with Telerik WinForms version Q1 2011 (and VS 2010). As far as I remember, the code worked before the controls were upgraded from version Q2 2010 SP1. But I could be wrong.

Regards.

Scheduler and Reminder

answered on 14 Jul 2011

3 answers

124 views

GridViewComboxColumn value added (once again)

hi,

i've read this article and that works very well, but my problem is i mus push enter to create the new value.
In my app, i want the new value in the list if i leave the cell or on the endedit event, something like that.
Can you help me please to do that ?
thanks a lot

GridView

answered on 14 Jul 2011

9 answers

263 views

print treeview

Hi,

is it possible to print treeview ?
thanks
almir

Treeview

answered on 14 Jul 2011