Questions on UI for WinForms Forum

1 answer

91 views

Unhandled NullReference exception in GridView dll?

Hello,

I am using win-forms GridView Control(Version Q3 2009 i.e 2009.3.9.1203). I was trying the Edit functionality in the GridView. I am saving the data to my database in the RowsChanged Event. When I edit a record with Grid column in edit mode and press enter it updates fine. But when I edit a column and click on another column in the same Grid the Data gets save but after complete execution I got an exception "Object reference not set...". I further tried to debug by setting the property "Enable unmanaged code debugging". From this I got to know that the exception was thrown - Unhandled null exception in Telerik.WinControls.GridView.dll

Can anyone help me on this?

Thanks in Advance

GridView

answered on 10 Jun 2010

1 answer

115 views

Changing columns via attributes

Hi,

I'm displaying several type of classes using the BindingList class as a DataSource. The GridView automatically generates columns of the names of the properties defined in these classes. In this case te text of the columns can be set with the DisplayName attribute. So far so good. My question now is, if there is a way to change the order of the columns via property attributes and/or if it is possible the hide some properties from beeing displayed.

Thanks in advance

Martin

GridView

answered on 10 Jun 2010

1 answer

73 views

Exceptions not refecting in RadScheduler

Hi,

I have custom appointment class and as well as custom editappointment dialog. I am able to reproduce Daily recurrence and weekly recurrence in the radscheduler. But when i try to create exceptions for the Appointment, the radscheduler control displays daily recurrence even for the days which has been defined as exception.i am using SchedulerBindingDataSource.

Scheduler and Reminder

answered on 09 Jun 2010

1 answer

127 views

Can't find GridViewRelation Collection Editor

I am new user for Telerik , recently learning RadGridView tutorial --> Hierarchical Grid --> GridViewBinding to Hierarchical Data
I do as tutorial, when arrive at "Define Relation" I can't find "GridViewRelation Collection Editor" as shown in tutorial.

Pls,
Is there anyone can tell me where I can get "GridViewRelation Collection Editor"?

Thanks and Best Regards
Naunton

GridView

answered on 09 Jun 2010

10 answers

276 views

changing the style of RadPanelBarGroupElement

Hi All,

Currently the RadPanelbarGroupElement[s] are displayed in a way that they are visible as seperate buttons kind of thing where we see the lines/borders around them.

I have a requirement where I need the text of the RadPanelbarGroupElements to be displayed in such a way that they are blended with the background.

For ex
Consider this screen itself and assume it that its RadPanelBar.
Now the way I want to dispay the group elements is as follows:

RadGroupElement1

RadGroupElement2

RadGroupElement3

Instead, I dont want it to be displayed with demarcations like:

RadGroupElement1

---------------------

RadGroupElement2

----------------------

RadGroupElement3

In all the sample applications of RadPanelBar, we see the group elements easily distinguishable with some boundaries.
I need to show them boundary less.

I hope i am able to explain the problem.If its not clear please let me knw and i will provide the screen shot of how i want the radpanelbar to look like.

Looking forward for your help.

thanks
barkha

Panelbar (obsolete as of Q2 2010)

answered on 08 Jun 2010

1 answer

121 views

Ribbon bar menu

Hello,
I am showing a menu on click of start button of the ribbon bar.
But along with menu options it also shows some unwanted space (in grey color) on the right hand side of the menus.
How to avoid this ?

Any help is greatly appreciated.

Regards,
Sid

RibbonBar

answered on 08 Jun 2010

3 answers

195 views

GridViewMaskBoxColumn with Culture

I use RadGridView to edit some data and declare the GridViewMaskBoxColumn in the following way

            GridViewMaskBoxColumn widthColumn = new GridViewMaskBoxColumn();
            widthColumn.HeaderText = "Width";
            widthColumn.FieldName = "Width";
            widthColumn.MaskType = MaskType.Numeric;
            widthColumn.Mask = "f2";
            widthColumn.FormatInfo = CultureInfo.CurrentCulture;
            BaseGridView.MasterGridViewTemplate.Columns.Add(widthColumn);

As u can see I even set the culture manually and during debug I see that the culture is "ru-RU" that means I will see the numbers separated width "," instead of "."

That's works fine I see the comma clearly.
But then I set
            BaseGridView.CellValidating += new CellValidatingEventHandler(BaseGridView_CellValidating);
to validate if the user entered the data in a valid range for my application.
When debug reaches this action i can see CellValidatingEventArgs.Value defined as "11.11" instead of "11,11" as was shown in the editor.
This leads application to an exception when i try set this value to a float property.
What have i done wrong?

GridView

answered on 08 Jun 2010

1 answer

408 views

DropShadow panel.

I need to create a winforms app with multiple 'panels' that have rounded corners with a shadow. This is what I'm talking about: DropShadow.

How would I go about doing this? I need to be able to put objects in the panel (.SWF file, .PDF file, HTML, ...)

I just started looking at the Telerik stuff today so I know almost nothing about it.

TIA - Jeff.

General Discussions

answered on 08 Jun 2010

11 answers

334 views

Make TextboxColumn accept return

Hi,

Is there a way to make the TextboxColumn added to Gridview like in code below to accept return<enter>..???

currently i have to do alt+ enter to accept the <enter> key.

Thanks,

                    GridViewTextBoxColumn textBoxColumn = new GridViewTextBoxColumn();         
            textBoxColumn.FieldName = "Comments";         
            textBoxColumn.FieldAlias = "Comments";         
            textBoxColumn.UniqueName = "Comments";         
            textBoxColumn.HeaderText = "Text";            
            this.radGridView1.Columns.Add(textBoxColumn);         

GridView

answered on 08 Jun 2010

1 answer

127 views

raddock x DockingManager1

Hi,

i've an old version of telerik products, now i try new version , but i have some problems.

how can i do this in raddock:
DirectCast(mainform.DockingManager1.ActiveMdiChild, NewPtable).

'cause in raddock , when i use activemdiform, gave an error "expression does not prduce value"

and how can close tabbed when close child form.

thanks

Dock

answered on 07 Jun 2010