Questions on UI for WinForms Forum

3 answers

189 views

[Solved] Help about event in MultiColumCombobox

Hi, Telerik Team .
My issue is i want to call my method do something when i click one row in EditorControl of MulticolumnComboBox, but i can't use SelectedIndexChange because if Index not change then event does't catch.
I try override method OnMouseUp of MultiColumnComboGridBehavior but this event also catch if i click the scrollBar in EditorControl. You can help me ! anyway, one event that On click one row in editor and dose not run when i click ScrollBar .
Thanks for answers

MultiColumn ComboBox

answered on 06 Aug 2012

1 answer

1.4K+ views

Change column background color

Hello
I'm using the code below to change the background color for a column in my grid.

With this I expected, after populating my grid with data (it is databoud to a datatable), that column "MyColumnName" will show all his cells backgroud in yellow color.

What I get is that I see the cells with the default background color (I'm using Office 2010 Black theme for the entire application), and I only see this column in yellow if I move the mouse over one row (when it highlights) in the column "MyColumnName" in this row alone. All the rest keep the default color.

Is there something I'm missing or doing wrong? I'm using Q2 2012.

Thank you in advance.

Private Sub MyGrid_CellFormatting(sender As Object, e As Telerik.WinControls.UI.CellFormattingEventArgs) Handles MyGrid.CellFormatting

If e.CellElement.ColumnInfo.Name = "MyColumnName" Then

e.CellElement.BackColor = Color.Yellow

Else

e.CellElement.ResetValue(VisualElement.BackColorProperty, ValueResetFlags.Local)

End If

End Sub

GridView

answered on 06 Aug 2012

3 answers

566 views

[Solved] RadDateTimePicker behaviour...

Hi there,

Just a comment really, when using a rad datetime picker, it might be useful to be able to catch some event based on the date that a user has selected.

The problem is that with the select/unselect behaviour of the calendar in the datepicker, there is an inbetween event "valuechanged" fired, with the date at that point being "1 January 1980", or datemin, so you can't really attach anything directly to that event without fudging it...

Now I understand the select/unselect of a calendar is why this behaviour exists, but realistically, when using a datepicker control, WHY would anyone want that inbetween date? Surely we're only ever interested in the date that the user has selected? This feels to me like seeing unecessarily the mechanics of the control?

Would it not be possible to segregate the events into a "real" ValueChanged event which would only fire once the

transaction (if you like) of changing to mindate and then to the actual date clicked on had completed and then relegate the current ValueChanged to something more accurate like "CalendarSelectionChanged"?

I think that a datepicker control should allow me to capture what the user has actually selected without having to filter out spurious events.

Incidentally, how DOES one filter out that spurious event when the date selected happens to be the minimum date? Does your control fire valuechanged twice, both times with the same (mindate) value in the Value property?

Kind regards,

Mike

Calendar, DateTimePicker, TimePicker and Clock

answered on 06 Aug 2012

1 answer

211 views

GridViewDateTimeColumn - how to edit time AND date

Hello, I'm trying to make date and time both editable in a GridViewDateTimeColumn. I declare a column with this code:

column = new GridViewDateTimeColumn(def.Name);

string dataFormatString = (def.CustomString == null ? "yyyy-MM-dd hh:mm:ss" : def.CustomString);

((GridViewDateTimeColumn)column).EditorType = GridViewDateTimeEditorType.TimePicker;

((GridViewDateTimeColumn)column).FormatString = dataFormatString;

((GridViewDateTimeColumn)column).CustomFormat = dataFormatString;

I tried DateTimePicker and TimePicker alike.

In DateTimePicker the time is always 12:00. If I want to edit the field with keyboard only (no additional window) I only see the date in the editbox, the time vanishes on edit mode. In TimePicker I can edit date in edit mode.

My questions are:
1) How to make time editable in DateTimePicker?
2) Is there a WinForms control that allows editing date and time in additional window mode?

Thank you in advance for your answers.
Best wishes,
Mariusz

GridView

answered on 03 Aug 2012

3 answers

327 views

Default Theme Font 2010 Q1 SP2 (Segoe vs. MS Sans Serif)

Hi,

I notice you have changed the font to Segoe. My user Base is still mainly Windows XP. Is there a safe fallback built in in the Theming Mechanism?
What's the best way to configure MS Sans Serif as the Font throughout if the App is not on Vista/Windows 7, Even if Segoe UI is installed with Office 2007?

Regards
Erwin

Themes and Visual Style Builder

answered on 03 Aug 2012

0 answers

140 views

Text Wrap

Hi,

We are using the Telerik Winforms Q3 2009 SP1. In that, We have the following issue in the Gridview control.

Eventhough, we have set the WrapText & AutoFitRows properties, the text present in the cells are not wrapped at only some times.

Please let us know the fix for this.

Attached is the screenshot for that.

As we are in production, we would appreciate your immediate response.

Thanks.

GridView

asked on 03 Aug 2012

2 answers

230 views

Problem with auto scroll

Hello,

I have three splitpanel and when the auto scroll is enabled some lines appear in the splitpanel.

Following attached the picture.

Thank you for all.

SplitContainer

answered on 02 Aug 2012

1 answer

205 views

slide menu bar ?

exist some control to make a slide menu bar?
like these:

http://www.dynamicdrive.com/dynamicindex1/slideinlink.htm
whit mouse click and/pr whit keyboard

http://www.dynamicdrive.com/dynamicindex1/slideinmenudrag.htm
Slide-In Menu Bar III (Manually controlled)

http://www.dynamicdrive.com/dynamicindex1/omnislide/index.htm

i want for winform.
if not exist, how can i combine a menu whit image icon and radRotator ?

Thank

Menu

answered on 02 Aug 2012

6 answers

406 views

[Solved] Close TabStrip Tab item by pressing the middle mouse button

Hello,

I have a number of tabs within a radpageview control in tabstrip mode, and I would like to allow the user to close them by pressing the middle mouse button (like a regular web browser).

This is what I've done so far:

//add event handler

newPage.Item.MouseDown += new MouseEventHandler(radButtonItem_MouseDown);

and the function:

private void radButtonItem_MouseDown(object sender, MouseEventArgs e)

{

//button was clicked by the mouse

if (e.Button == MouseButtons.Middle)

{

MessageBox.Show("Middle button");

rpvApplication.Pages.Remove(((RadPageViewStripItem)sender).Page); // crashes!

//rpvApplication.Pages.RemoveAt(3); // crashes!

}

I've tried calling the Pages.Remove function using the sender object as well as by the tab's index, but the result is always the same:
"nullreference exception" right after the page is removed.

Is there another way I can execute the 'close tab' functionality (just like clicking the 'x' button), without getting a null reference exception?

Thanks in advance!

PageView

answered on 02 Aug 2012

1 answer

191 views

Determine if the grid has errors

I have code in the CellValidating event that sets ErrorText to display errors.

If the user then clicks the Save button, i'd like to display a message saying "Gotta fix those errors first".

Is there a way to ask the grid if it has any errors? Or do I need to loop through every cell and check its errortext?

Thanks!

GridView

answered on 02 Aug 2012