Questions on UI for WinForms Forum

2 answers

165 views

Problem with validation and scrolling in GridView

We have found a serious bug in RadGridView for WinForms, whereby the user can become completely "trapped" in the application when entering an invalid value in a cell, then scrolling the grid.

You can reproduce the behaviour using the Winforms demo application: Demo Application - RadControls for WinForms Q3 2012:

1. Enter an invalid value in a cell, and press enter.
2. Scroll the grid, by clicking in the scroll bar.
3. Now you're stuck, if you scroll back the entered value is gone, but the row is still in error.

You are truly stuck, you can't clear the original error. The only way out I found is to force quit the demo application via the Task Manager.

By the way, don't click the down scroll box (I mean the little triangle at the bottom of the scroll bar) or the app will start scrolling endlessly and eventually crash.

So, how to work around this? One suggestion is to override the CloseEditor :

Public Class MyGridViewEditManager

Inherits GridViewEditManager

Public Sub New(ByVal gridView As RadGridViewElement)

MyBase.New(gridView)

End Sub

Public Overrides Function CloseEditor() As Boolean

Dim closeOnFail As Boolean = Me.CloseEditorWhenValidationFails

Me.CloseEditorWhenValidationFails = True

Dim result As Boolean = MyBase.CloseEditor()

Me.CloseEditorWhenValidationFails = closeOnFail

Return result

End Function

End Class

and then in the New() of the form (where MyGridView is the name of my grid):

Me.MyGridView.GridViewElement.EditorManager = New MyGridViewEditManager(Me.MyGridView.GridViewElement)

This kind of works, but it always closes the editor whenever the user clicks anywhere outside the invalid cell. It avoids the problem of being trapped, but the behaviour is strange - you wouldn't expect the invalid value to disappear when you click outside the cell. The desired behaviour is that the editor is closed if the user scrolls.

One approach I tried without success is to disable scrolling while a grid cell is in edit mode, but no luck.

Does anyone have a good workaround for this tricky problem?

GridView

answered on 12 Dec 2012

1 answer

270 views

RadDropDownList font and RadDateTimePicker alignment

Hi,

1) How can I change the font of the RadDropDownList items on the style builder ?
2) How Can I set the alignment of the RadDateTimePicker selected date to right on the style builder?

Thanks.

Themes and Visual Style Builder

answered on 12 Dec 2012

1 answer

58 views

FromXmlDateTime and ToXmlDateTime

Just wondering if the DateTimePicker can resolve xml date time ie: yyyy-mm-ddThh:mm:sszzzzzz.

I am trying to get/set the value to and from XML but cannot see how I can achieve this with this control. For example, provided it is possible, will it remember when it is UTC or Local.

Calendar, DateTimePicker, TimePicker and Clock

answered on 12 Dec 2012

3 answers

212 views

Add RichTextBox to PropertyGird

Can we add RichTextBox to PropertyGird?
also when i add a RadRichTextBox to Property grid it seem like showing the cursor somewhere else and even cant type.
please help!!

Ishara

PropertyGrid

answered on 12 Dec 2012

1 answer

184 views

Change Header/Tab Tittles Font Size

Is there a way to change the size of the Headers for the Document Window or Tab Tittles. I have put in this link an image and the parts I wanted to change the size are annotated with square boxes.

Dock

answered on 12 Dec 2012

6 answers

136 views

Custom- and BasicFiltering

Hi!

How can i use custom- and basic filtering combinded ?

There is a customFilterRow example, but it does not contains the basic filter row either.

I have a textBox, and on the textChanged-event i refresh the masterTemplate and the customFiltering-event is fired.
Then i do my filterSearch. Everything works fine, like in the customFiltering-example.

But after that, i want to use the basicGridFilter, but it doesn't work. if i clear the textBox i set the enableCustomFiltering to false,
and then the grid is empty. i only get basic or customFiltering to work, not both.

Thx !

The textBox (customFilter) is used for a search on the whole grid.
The FilterRow should be used to filter each row.

GridView

answered on 12 Dec 2012

3 answers

2.2K+ views

Panel Rounded Corners Issue

Hi! I am creating a panel with rounded corners, I followed the documentation here and was able to get that. The problem comes when I wanna change the color of the panel. For instance, I have a gray background on my app, and the panel has a white background. Instead of only seeing the rounded corners on the panel... I am seeing the square corners in white and then a rounded border around the panel. See screenshot. Suggestions on how to hide the square corners?

Thanks!

Panel

answered on 12 Dec 2012

2 answers

181 views

Disable Key Tips for some controls in Ribbon Bar

Hi there,

is it possible to disable the Key Tips for some specified controls in the RadRibbonBar?

I have placed a RadImageButtonElement and a RadDropDownListElement in the same RadRibbonBarGroup.

I would like to disable the Key Tip feature only for this both controls. All the other controls should be accessible by the Key Tip.

I have set the Property -> radRibbonBar1.EnableKeyMap = true; and for the other controls in the RibbionBar I assigned the KeyTip too.

At the moment the RadImageButtonElement and RadDropDownListElement get a numeric automatic key tip.

I use RadControls for WinForms Q3 2011 SP1.

If anyone has any ideas I would appreciate

Thanks in advance

Sascha

RibbonBar

answered on 12 Dec 2012

2 answers

96 views

Unsubscribing to static events on forms where DocumentWindowis parent

I have a few global static events that some of my forms subscribe to. The subscription happens in the Form.Load event of each form. Those forms are added to a DocumentWindow then to the DockManager. The subscription is great, everybody's listening fine. Now when I close a DocumentWindow, the forms OnClosing events doesn't happen thus not unsubscribing to the static event I had wired. So now when another form (document window) fires the static event I get an exception from the closed form where the static handler is trying to work but the form doesn't exists anymore.

Any ideas on how to unsubscribe to static events on forms that are children to DocumentWindows once closed?

Thanks,
Byrd

Dock

answered on 12 Dec 2012

1 answer

94 views

radgridview rowvalidating event index

Hello,
Im using telerik 2010.2.10.713 version library, i want on my radgridview to validate the filled fields by the user at the end of editing the row, i have as selection mode the fullrow select, for that purpose i used row validating event wich i used on datagridview but this didnt work on radgrid view, im trying:

if (radGridView1.Rows[e.RowIndex].Cells["usu_clave"].Value == null) { radGridView1..Rows[e.RowIndex].Cells["usu_clave"].ErrorText ="some error"; e.Cancel = true; //prevent the user to save changes return; }

<code style="color: #000;">if (radGridView1.Rows[e.RowIndex].Cells["usu_clave"].Value == null)</code><code style="color: #069;font-weight: bold;"></code><code style="color: #000;"> {</code><code style="color: #000;"> radGridView1..Rows[e.RowIndex].Cells["usu_clave"].ErrorText ="some error";</code><code style="color: #069;font-weight: bold;"></code><code style="color: #000;"> e.Cancel = true;

//prevent the user to save changes      </code><code style="color: #069;font-weight: bold;"></code><code style="color: #000;">                 return;</code><code style="color: #069;font-weight: bold;"></code>             }<br><div style=" background-color: #fff;"><span style=" "><span style=" margin-left: 0px !important;"><code style="color: #000;"></code></span></span></div>

what is going wrong?

thanks!

General Discussions

answered on 11 Dec 2012