Questions on UI for WinForms Forum

1 answer

191 views

cant grip (grid.datasource as DataTable).GetChanges()

HI, I have a gridView (with DataTable as DataSource) and im trying to use the "GetChanges()" when the user change some data in the grid.

in order to use it I do this:
(grid.datasource as DataTable).GetChanges()

I found out that when I change one cell in the gridView, and then click out of that row , the GetChange() gives me the changes as it should

but

If I change one cell in the gridView, and then I click in another cell but in the same row. the GetChange() give me Null, like there where no changes.

The event grid_ValueChanged() is fired, but the (grid.datasource as DataTable).GetChanges() still giving null.

any solution?

GridView

answered on 31 May 2013

4 answers

499 views

Shortcuts and Accelerator keys For RadMenuItem Issue

Hi:
    I hope I can explain my problem clearly.

    When I add shortcuts and accelerator keys for RadMenuItem, I find some bugs or issues.

Step1: Add RadMenuItem "File". (Parent)
Step2: Add RadMenuItem "Open" (accelerator key is : O; shortcut is : Ctrl + Shift + G)
Step3: Add RadMenuItem "Add"  (accelerator key is : A; shortcut is : Alt + O)
Step4: Set "Add" is disabled.

Run the program, you can see the scene as the attachment below. Now, please enter "Alt + O",
the issues comes.....you can see it execute the "Open" function. Who can tell me why!!!!!
Is it mixed the shortcuts and accelerator keys ? is this a bug?

Menu

answered on 31 May 2013

1 answer

181 views

Problem with closing RadMenu

Hi!

I'm using Telerik WinForms Q1 2013 SP1.

I've inserted a RadMenu with a RadMenueButtonItem in my Main WindowsForm.
When the RadMenueButtonItem is clicked a Form is shown with newForm.ShowDialog();
The problem i have: the radMenue is still open until i click on the Form.
How can i close the RadMenue when a RadMenueButtonItem is clicked?
I've tried to set the Focus on the new Form, but didn't help.
Only a click event on the new shown Form closes the RadMenu.

Thanks a lot for any help...

Menu

answered on 30 May 2013

3 answers

336 views

[Solved] Export to excel in hierarchical RadGrid, hide headers

Hey at Telerik

I'm struggling to get an export of a hierarchical RadGrid to work properly.

I have included an export example of how it looks now and one how i would like it to look.

Both files can be found here
http://kort2.lifa.dk/publicdownload/ExportToExcel.rar

I would like to hide the column headers of the childtemplates when exporting. Have tried with the ViewCellFormatting and RowCellFormatting events but with no luck.

Hope you can help me with this.

Sincerly Jan

GridView

answered on 30 May 2013

4 answers

190 views

[Solved] Make builtin header filters query the DB instead of memory, with IQueryable as datasource

Hi,

I am using GridView with an IQueryable datasource, together with the builtin header filters.
But when filtering, it just filters the loaded memory object instead of the database.

I have tried to utilize DynamicLinq, by handling the FilterChanging event like this:

Private FilterDescriptors As New List(Of FilterDescriptor)

Private Sub GridView1_FilterChanging(sender As Object, e As Telerik.WinControls.UI.GridViewCollectionChangingEventArgs) Handles GridView1.FilterChanging

e.Cancel = True

For Each f In e.NewItems.OfType(Of FilterDescriptor)()

FilterDescriptors.Add(f)

Next

	   LoadData() 'Load data here

End Sub

Then in the LoadData method I have to parse the FilterDescriptor expressions, but this would take some time to get it right, and implementing the various filter operators in DynamicLinq. E.g. the "LIKE" operator needs to be rewritten as ColumnName.Contains(filter) etc.

If my memory serves correct I believe that KendoUI MVC have some builtin functionality to handle this type of situation.
Do you have anything similar in the WinForms toolkit ?
Or do you recommend a different approach ?

(Using VS2012, .NET4.5, Toolkit v. 2013.1.321.40)

GridView

answered on 29 May 2013

2 answers

186 views

[Solved] Replacing a button in the Command Bar

I am trying to conditionally switch between a Command Bar Button and a Command Bar Drop-Down Button with this code:

if (A)

{

if (commandBarStripElement1.Items.Contains(cbbCopy))

{

location = commandBarStripElement1.Items.IndexOf(cbbCopy);

commandBarStripElement1.Items[location] = cbDropDownButtonCopy;

}

else

{

if (commandBarStripElement1.Items.Contains(cbDropDownButtonCopy))

{

location = commandBarStripElement1.Items.IndexOf(cbDropDownButtonCopy);

commandBarStripElement1.Items[location] = cbbCopy;

}

The code works fine when A is true, but the second time the function is entered and A is false. I get this error:

System.InvalidOperationException: Element already added

The error is thrown from this line:

commandBarStripElement1.Items[location] = cbbCopy;

I've debugged in and checked all of the items in commandBarStripElement1 and cbbCopy is not in there. Is there some other way to swap items in the Command Bar while maintaining their position?

CommandBar

answered on 29 May 2013

3 answers

295 views

How to get index of the current selected child view

Ok I am sure this is simple, but cant seem to figure out how to get the index of the current child hierarchy view.

What I am trying to do is move the current view index to the begining of the collection so the export will export the data that the user is currently viewing.

Thanks

GridView

answered on 29 May 2013

1 answer

238 views

[Solved] Category not displayed

I'm evaluating the Winforms tool and have made a small project to try the RadPropertyGrid component. Here's the relevant code:

radPropertyGrid2.PropertySort = PropertySort.CategorizedAlphabetical;

RadPropertyStore store = new Telerik.WinControls.UI.RadPropertyStore();

store.Add(new PropertyStoreItem(typeof(double), "Foobar", 1.234, "ahdfl fdlskhs hjdfd", "Ack"));

this.radPropertyGrid2.SelectedObject = store;

When I run my project using this code, the category name is not drawn above the property. See attached picture. I've tried creating properties manually using the PropertyStore, and also by using the [Category] attribute on my selected objects. Neither seem to work.

Any advice would be greatly appreciated.

NOTE: when I use an object with multiple properties as the selected object, each property appears to get a separate group associated with it, even though the name on each group is blank.

PropertyGrid

answered on 29 May 2013

2 answers

217 views

DateTime Format in “Today” Section of Control

Hi there,

I’d like to change the format which the calendar control uses to display the current date, to the left of the "Today" button. (Please see the attached screenshot – it's the format of the section circled in red which I’d like to change.) I’m specifically trying to use dd/MM/yy and have already tried this:

radDateTimePicker1.Format = DateTimePickerFormat.Custom;

radDateTimePicker1.CustomFormat = "dd/MM/yy";

Would you please describe how to change the date format to the left of the “Today” button?

Thank you,

Ben

Calendar, DateTimePicker, TimePicker and Clock

answered on 28 May 2013

1 answer

175 views

[Solved] GridViewComboBoxColumn Vertical Scroll Bar Width

Hi Support,

In my GridView a have a GridViewComboBoxColumn. My application is touch screen and I would like to increase the vertical scroll bar width.

Can you give me some step on how to do this?

Regards,
Nadia

GridView

answered on 28 May 2013