Questions on UI for WinForms Forum

0 answers

150 views

Hello,

I'm using the Q3 2009 WinForm controls and unfortuantely this project is way too big to convert to a newer project now. Unfortuantely, the Help guide that comes with Telerik controls isn't enough and I have a few questions:

Trying to manually add a row isn't working. Using grdGrid.Rows.Add() I've tried several input parameters. I've used the custom object I built (that the DataSource is bound to a collection of) as well as creating a generic object array that contains the values the columns need. Both ways, I get the following error:

The following exception occurred in the RadGridView:

System.NotSupportedException: The list must be an IBindingList to AddNew. at System.Windows.Forms.CurrencyManager.AddNew() at Telerik.WinControls.UI.GridViewRowCollection.Add(Object[] values)

To replace this default dialog please handle the DataError event.
How closely is the DataSource tied to the Grid? I thought if I added a record to the DataSource (and even re-set the Grid's DataSource) the new row would show, but I'm wrong.

Edit: Please remove this post. It turns out I needed to use a BindableList<T>. It turns out the List<T> support is not very strong in Q3 2009.

GridView

asked on 09 Nov 2011

3 answers

652 views

Controls disappear when moved

I have a form that contains a split container with 2 split panels. The top panel contains search criteria and the bottom contains a radGridView that displays the resutls.

I just completed the upgrade process to Q2 2010 SP1 and now when I click on any of the controls in the criteria panel and select the "move" grab bars the control disappears. Upon further inspection the location property gets changed to -266, -191.

I have attached a document of the screen caps.

I also undocked the entire Split Container and tried to move it. Once I grab the "move" box the location gets set to -266,-191
What am I doing wrong or is this a bug?

SplitContainer

answered on 09 Nov 2011

1 answer

120 views

Text not appearing in radGridView

After the breaking change of Telerik removing the

GridViewDataColumn newColumn = new GridViewDataColumn ();

and forcing us to specify with

GridViewDataColumn newColumn = new GridViewTextBoxColumn();

None of the text put into the column appears.

Has anyone else had this issue?

Aside: I really would advise anyone thinking of upgrading from 2009 > 2011 to either not do it unless you absolutely have to or to schedule a great deal of time for the upgrade. Telerik has created a PHENOMENAL number of breaking changes.

GridView

answered on 09 Nov 2011

1 answer

205 views

Radpageview Explorer Bar

On radpageviewle in explorerbar mode, is it possible to put buttons and/or multiple icons on the bars that you click to open and close the different radpageviewpages?

PageView

answered on 09 Nov 2011

1 answer

179 views

Multi-Column Combo

Hello,

Can a multi-column combo box/listbox, display an image column. I want something similar to the demo of multicolumn combo, but with an image columns, where if column A=Yes display image1 and if column A=No display image2

Are there any examples you can point me to?

Many thanks

Terry

MultiColumn ComboBox

answered on 09 Nov 2011

4 answers

535 views

Null Value in Masked Edit Box

I see posts from 2008 and 2009 about the masked edit box not supporting null values
(http://www.telerik.com/community/forums/winforms/maskededitbox/value-cannot-be-set-to-null.aspx)

Is this still true? It is a little misleading to see "0.0000" in a edit box when the real value is null.

In my situation, the mask type is "numeric" and the mask is "n4". The "nulltext" property doesn't seem to have any effect.

Is there any workaround to blanking the edit box when the value is null?

MaskedEditBox

answered on 09 Nov 2011

3 answers

699 views

Change font of RadTreeView e.a.

Hi,

I am trying the do a few things and I don't seem to be able to do this with the WinForms RadTreeView control - or at least I don't know how:

1. Change the font. Seems simple, but I tried doing it in both the designer and in code (myTreeView.Font = new Font(...) etc), but no matter what I set it to, the treeview still shows the same font. What do I need to do to change this??

2. How to I remove/hide/decrease the left margin showing on all first level nodes? I am not using a root node and there's always a white margin to the left of each node.

Thanks!

Lucien Dol
New Zealand.

Treeview

answered on 09 Nov 2011

13 answers

746 views

[Solved] SplitContainer - Show the splitter button

How do I show the splitter button to hide/unhide one of the panel?

SplitContainer

answered on 09 Nov 2011

1 answer

201 views

SiteCore Rich Text Editor with line numbers

Hi

Does asp.net ajax Rich Text Editor control have a feature that displays line number in the control.
something like this http://www.codeproject.com/KB/edit/numberedtextbox.aspx

Thanks,
Kannan

General Discussions

answered on 09 Nov 2011

12 answers

668 views

Cell Read Only

Is it possible to make the individual cell read only?
Thanks

GridView

answered on 09 Nov 2011