Questions on UI for WinForms Forum

9 answers

539 views

i've got a gridview where files stored in a database are displayed. now i want to drag'n'drop new files to the gridview and store them by code in the database.

is it possible to drag'n'drop any file or folder structure to the gridview?

am i right to use the DragDrop event?

how can i get the properties of the dropped file (fileName, etc...) to handle the necessary operation by vb.net code?

thanks, andi

GridView

answered on 17 Sep 2009

3 answers

199 views

RadFlowChart

Hello Telerik,

I'd like to put a vote in for a FlowChart product. I've actually seen a few places where you guys have mentioned that you were coming out with one, so I'd like to know if it's still in the works. Our group is likely to pay a good deal for another product, simply to get a FlowChart and I know that it will be much worse than one you guys would put together. Some good news in this area would be wonderful.

Here's a link to a page with some diagrams like what we're looking for: http://www.lassalle.com/products.htm#Layout

Specifically, the ones like the hierarchical layout at the bottom would be great!

Thanks!

Jeremy

New Product Suggestions

answered on 17 Sep 2009

1 answer

108 views

Change fill of mimize, window state and close buttons

Let me start by saying I am new to the Visual Style Builder. I have found that the delivered themes have been sufficient in the past. However, my company has recently mandated common UI schemes and therefore it seems easier to create separate theme than to try and manage all applications colors. So with that said...

I have a ShapedForm with a RibbonBar at the top. I want to change the backcolors of the three buttons at the top of the form. I found how to do it, but when I change one, it changes all three. How do I change each one individually? Just as an example (and this is not exactly the case, but) what if I want the minimize button to have green back color, the window state button to have blue and the close button to have red back color. Is there a way to do this?

Also, how do I change the image for these buttons? I have tried clicking on the image for the button, but it will not let me set a new image.

Thanks in advance,

Lee

RibbonBar

answered on 17 Sep 2009

1 answer

140 views

Drag out Desktop

Hello,

I need to drag a treeview node that rappresent a file from treeview to desktop.
How can do?

Mirko

Treeview

answered on 17 Sep 2009

2 answers

177 views

Select Values from List

Hi, i have the following RadComboBox binding:

st_AfectaStock.DataSource = mgrStockTipo.ListarStockTipos(0)

lst_AfectaStock.DisplayMember =

"STP_NOMBRE"

lst_AfectaStock.ValueMember = "STP_ID"

The problem: when the user type a value (not in the list) on the ComboBox, the SelectedValue = Nothing.

how can i solve this problem?

Regards!

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 17 Sep 2009

1 answer

165 views

radTrackBar Value Types

Hi,

Is it possible to get RadTrackBar to progress in fractions rather than whole numbers? (I.e. use double instead of int)

E.g. 0.1, 0.2, 0.3 instead of 0, 1, 2, ..

Thanks,
Brad

TrackBar

answered on 17 Sep 2009

1 answer

165 views

.NET Runtime 2.0 Error

Hello,

I've got a problem with an application using Telerik.WinControls.
Every few hours, seemingly random, it crashes with the following error:
EventType: clr20r3 P1: xcat.exe P2: 1.1.0.0 P3: 4aa9aa27 P4: telerik.wincontrols P5: 2009.2.9.701 P6: 4a535c8e P7: 1ac7 P8: 32 P9: system.nullreferenceexception
this error is also logged in windows event log as .NET Runtime 2.0 Error (Event ID: 5000).

From what I understand it's an unhandled NullReferenceException somewhere in Telerik.WinControls assembly.

Using above event data (P7: 1ac7) and windbg I got the following result:
Module: 00988b00 (Telerik.WinControls.dll)
Token: 0x06001ac7
MethodDesc: 04e95348
Name: Telerik.WinControls.RadControlAnimationTimer.Stop()

And than P8: 32 pointed me to the following disassembly line:
L_0032: callvirt instance void [System.Windows.Forms]System.Windows.Forms.Timer::remove_Tick(class [mscorlib]System.EventHandler)

So I think it happens in Telerik.WinControls.RadControlAnimationTimer.Stop() when Tick event hadler is removed (although I'm not 100% sure).

The application does not use RadControlAnimationTimer but I use other Telerik controls (RadGridViews, RadButtons, RadComboBoxes, RadMenus) and they probably make use of the RadControlAnimationTimer.

I also have a try-catch block around Application.Run() but that particular exception does not get caught there - so I can't look at the stack trace to pinpoint where and if the exception originates in my code.

Could you maybe suggest some way of catching that exception or maybe disabling RadContolAnimationTimer.

Regards,

Piotr.

General Discussions

answered on 17 Sep 2009

7 answers

420 views

Summary Rows

I need to be able to create a summary column that contains the results of a calculation using other columns in the grid. I understand that you can set the aggregate function for the summary column to none, however, the summary column requires a field name and does not allow an expression. What is the best way to achieve this functionality?

Thanks,

James

GridView

answered on 16 Sep 2009

3 answers

455 views

AutoHide Doesn't Seem to Work for Right-Docked ToolWindows

Hello,

I have a RadForm containing a RadDock and one left-docked toolwindow, one fill toolwindow and three right-docked toolwindows. I am experiencing three problems.

First, because I don't want the Right-docked tabs to be visible on form load, I call the .Hide() method to hide the three tool-windows. Later, when I want their tabs to be visible, I call the .AutoHide() Method for the right tool-windows, and for some reason they display their tabs on the left side of the screen. When you hover over the tabs, they slide out from the left side, but if you click the auto-hide button, they dock on the right side of the form. I have found a BAD workaround, which involves calling the .Show() method just before the .AutoHide() method, but this causes a lot of drawing artifacts and ugliness on the screen.

Second, in this same configuration, when I originally launch the form, by clicking a button on the MdiParent, the first thing I see is one of my right-docked toolwindows slide-opening animation, hovering in space, then disappearing, prior to the rest of the form displaying. Weird.

Third, If I have all three right-docked windows auto-hid, and hover over their tabs in sequence, it appears that the tabs do not hide when i move from one to the next, but in fact, all three stay open, with the last one on top of the first two. Thus, when I click the icon to turn off auto-hide and dock the window permanently, it actually opens all three in this manner, not just the last one I hovered over, as you'd expect.

Any help would be appreciated.

Jeremy

Dock

answered on 16 Sep 2009

4 answers

185 views

Problem with persistent configuration, LoadLayout and SaveLayout

I have a problem with persistent configuration in my RadGridView

When my application starts I create a default setup in my code.

After that I check weather a saved grid configuration exists, and if so it is set by using RadGridView.LoadLayout(conf)

The problem is that if a column by default has IsVisible=false it stays false even though the saved grid configuration sets it to true. This does not apply the other way around, - if the default is true and the configuration says false it is false.

The column order has the same problem. There is a default order, which overrides the configured order.

I have checked the string that is written and read by the SaveLayout and LoadLayout, and it is correct.

Is this a known error, or am I doing something wrong?

Regards, Jill-Connie Lorentsen

GridView