Questions on UI for WinForms Forum

2 answers

201 views

PropertyBag

Hello,

I'm binding objects to a GridView, but i need to create properties for my objects at runtime, because I won't know what properties the object has or how many. (This is a plugin for Autodesk Revit.) I was able to implement the PropertyBag method here which is working https://www.codeproject.com/Articles/12282/Implementing-a-PropertyBag-in-C But the GridView just sees "PropertyBag" as one of the properties. I'm trying to figure out how to get (or if) the GridView to read these 'subproperties'. I can create columns for each property in runtime but the cells are blank. Or if it makes sense to set the cell value of the row based on the column's name. Thanks.

GridView

answered on 21 Feb 2018

14 answers

4.0K+ views

Refresh a ListView

Hi there
I want to know how could we refresh a ListView after editing it's items programmatically
I tried these but no change in the ListView until I grab the data and fill it again after an event.

I edited just a piece of data

ListViewDataItem item = lv.Items[pos];

item["Variety"] = this[id] ;

lv.Update();

lv.Refresh();

Shouldn't it work ?

I didn't bound it to anything, and it's filled from a collection
if the strategy isn't the preferable approach please give advices on this
thanks in advance

ListView

answered on 21 Feb 2018

3 answers

184 views

How to prompt/confirm for drag and drop row in telerik grid

I have implemented the drag and drop row feature of telerik grid. Now i have to comfirm/prompt user for drag and drop row action with some message like 'Are you sure to drag the selected row?'

I have implemented below two events for the same

1) Client Side:

function onRowDropping(sender, args) {

// some code to do something

}

2) Code behind:

protected void grd_RowDrop(object sender, GridDragDropEventArgs e)
{

// some code to do something

}

So, Please suggest how can we achieve this functionality.

1) Once user attempt to drag and drop the row, a confirmation popup should come.

2) If user confirm the action row should be dropped and re-ordered.

3) Else action should be reverted from client side itself.

Any help would be highely appriciated.

Thnaks,

Manish

GridView

answered on 21 Feb 2018

5 answers

310 views

Leading zero for RadMaskedEditBox DateTime formatting

Our client wants to input dates as MM-dd-yyyy with leading zeros.

I have the RadMaskedEditBox set as:
Mask = MM-dd-yyyy
MaskType = DateTime

What setting is missing to force and keep the leading zeros?    (specifically for the month and day)

With the current settings the following behavior occurs as follows:
    1. radMaskedEditBox.Value = someDateTimeObject; results in the leading zero of the month does not show
    2. Typing 0 causes the month mask to collapse to one character. The client expects to see 00 all the time as the
        double 'M' explicity specifies requiring two digits.
    3. After typing the second digit the zero is not shown. For example, typing '04' only shows '4'.
    4. The mask sticks on the month, never advancing to the day. For example, typing '04022009' only results in '9-00-0000'
        as the last digit typed was a nine.

MaskedEditBox

answered on 21 Feb 2018

1 answer

688 views

How do you bind grid view combobox cell to different data sources based on value of another cell

Hi I’m developing an application and I need to bind the combobox column to difference datasources depending on the value of another cell. For example; when the user enters value “fruits” in a cell of a row 1, the next cell, which is a combobox presents to the user items of fruits only; when he enters “cars” in the next row only cars are listed in the combobox cell of the row. How do I achieve that?

GridView

answered on 20 Feb 2018

6 answers

232 views

Selecting GridCells Programmatically

Hi Telerik Folks,

We've overridden our "ProcessKey(KeyEventArgs keys) in a customized BaseGridBehavior class that we're using. In doing this, the default keys for selecting a block of cells (Shift + the arrow keys) are no longer working.

To overcome this we're trying to put in custom code to explicitly do the same thing. It looks like this...

01. public class MyGridBehavior : BaseGridBehavior

02. {

03.

04.

05. public void SelectCellBlock(GridViewCellInfo SelectedCellTopLeft,GridViewCellInfo SelectedNewCell)

06. {

07. this.GridControl.ClearSelection();

08.

09.

10. int

TopRowIndex = SelectedCellTopLeft.RowInfo.Index <= SelectedNewCell.RowInfo.Index ? SelectedCellTopLeft.RowInfo.Index : SelectedNewCell.RowInfo.Index;

11. int

BottomRowIndex = SelectedCellTopLeft.RowInfo.Index >= SelectedNewCell.RowInfo.Index ? SelectedCellTopLeft.RowInfo.Index : SelectedNewCell.RowInfo.Index;

12.

13. int

LeftColumnIndex = SelectedCellTopLeft.ColumnInfo.Index <= SelectedNewCell.ColumnInfo.Index ? SelectedCellTopLeft.ColumnInfo.Index : SelectedNewCell.ColumnInfo.Index;

14. int

RightColumnIndex = SelectedCellTopLeft.ColumnInfo.Index >= SelectedNewCell.ColumnInfo.Index ? SelectedCellTopLeft.ColumnInfo.Index : SelectedNewCell.ColumnInfo.Index;

15.

16.

//this.GridControl.GridNavigator.BeginSelection(new GridNavigationContext() { InputType = InputType.Keyboard, ModifierKeys = Keys.Shift });

17.

18. for (int rowIndex = TopRowIndex; rowIndex <= BottomRowIndex; rowIndex++)

19. {

20. for (int columnIndex = LeftColumnIndex; columnIndex <= RightColumnIndex; columnIndex++)

21. {

22. this.GridControl.Rows[rowIndex].Cells[columnIndex].IsSelected = true;

23. }

24. }

25. }

26.

27. public override bool ProcessKey(KeyEventArgs keys)

28. {

29.

30. if (keys.Shift && keys.KeyCode ==Keys.Down)

31. {

32. GridViewCellInfo SelectedCellTopLeft = this.GridControl.SelectedCells.OrderBy(r => r.RowInfo.Index).ThenBy(c => c.ColumnInfo.Index).FirstOrDefault();

33. this.GridControl.GridNavigator.SelectNextRow(1);

34. GridViewCellInfo SelectedNewCell = this.GridControl.SelectedCells.OrderBy(r => r.RowInfo.Index).ThenBy(c => c.ColumnInfo.Index).FirstOrDefault();

35. SelectCellBlock(SelectedCellTopLeft, SelectedNewCell);

36. return false;

37.

38. }

39.

40. if (keys.Shift && keys.KeyCode == Keys.Up)

41. {

42. GridViewCellInfo SelectedCellTopLeft = this.GridControl.SelectedCells.OrderBy(r => r.RowInfo.Index).ThenBy(c => c.ColumnInfo.Index).FirstOrDefault();

43. this.GridControl.GridNavigator.SelectPreviousRow(1);

44. GridViewCellInfo SelectedNewCell = this.GridControl.SelectedCells.OrderBy(r => r.RowInfo.Index).ThenBy(c => c.ColumnInfo.Index).FirstOrDefault();

45. SelectCellBlock(SelectedCellTopLeft, SelectedNewCell);

46. return false;

47.

48. }

49.

50. if (keys.Shift && keys.KeyCode == Keys.Left)

51. {

52. GridViewCellInfo SelectedCellTopLeft = this.GridControl.SelectedCells.OrderBy(r => r.RowInfo.Index).ThenBy(c => c.ColumnInfo.Index).FirstOrDefault();

53. this.GridControl.GridNavigator.SelectPreviousColumn();

54. GridViewCellInfo SelectedNewCell = this.GridControl.SelectedCells.OrderBy(r => r.RowInfo.Index).ThenBy(c => c.ColumnInfo.Index).FirstOrDefault();

55. SelectCellBlock(SelectedCellTopLeft, SelectedNewCell);

56. return false;

57. }

58.

59. if (keys.Shift && keys.KeyCode == Keys.Right)

60. {

61. GridViewCellInfo SelectedCellTopLeft = this.GridControl.SelectedCells.OrderBy(r => r.RowInfo.Index).ThenBy(c => c.ColumnInfo.Index).FirstOrDefault();

62. this.GridControl.GridNavigator.SelectNextColumn();

63. GridViewCellInfo SelectedNewCell = this.GridControl.SelectedCells.OrderBy(r => r.RowInfo.Index).ThenBy(c => c.ColumnInfo.Index).FirstOrDefault();

64. SelectCellBlock(SelectedCellTopLeft, SelectedNewCell);

65. return false ;

66. }

67. }

68.}

...It works, pretty much but it's performance gets exponentially slower the larger the block of cells that is selected holding down the Shift key. It does this most likely because it loops through every cell and individually selects and flips the "IsSelected" property.

Is there a more efficient way to select blocks of cells, like using the GridNavigator.BeginSelection? Is there a sample for using the GridNavigationContext parameter to do it this way given two cell addresses?

Are we going about this the wrong way? Is there a more efficient way to make it opt out of our ProcessKey override and have it use the default behavior?

Thanks for any help you can provide...

GridView

answered on 20 Feb 2018

3 answers

180 views

Excel-like available filter off

How on some columns to disconnect available filter?
And in the first column, leave only containce?

GridView

answered on 20 Feb 2018

5 answers

1.2K+ views

Programmatically setting size

I guess I am the only person who can't figure this out, but how do I programmatically set the size of a panel in the splitcontainer? I have a form that has 2 panels and I want to be able to resize the containers on startup based on size during last use. I have tried:

Setting Panel Heights
Setting radSplitContainer1.SplitPanels[?].Height
Setting radSplitContainer1.Splitters[0].Location

I am out of ideas. Please let me know if this is possible.

Thanks,
Lee

SplitContainer

answered on 19 Feb 2018

3 answers

156 views

RadDropDownListItems in a RadRibbonBarGroup

Hello all telerik users,

I'm a new user of Telerik Objects and I have a problem where using a RadDropDownListItem in RadRibbonBarGroup.

In this case (Design form) the datasource property of the RadDropDownListItems is disabled. I don't understand. When I put a RadDropDownListItem elsewhere in the form this property is enabled. And of course I need it would be enabled inside a RadRibbonBarGroup.

I have to say that I'm not a C# or VB user but a Progress OpenEdgeStudio user.

Thanks a lot for your answers.

JP CLARY

DropDownList

answered on 19 Feb 2018

5 answers

883 views

Capture Row Delete Event

The radgridview that I've setup allows a user to click the delete button to delete a row. This works well, but I'd like to prompt the user to confirm a delete. I've tried to see if there is an event to capture the delete and allow a cancel, but it does not appear to exist. I realize I could use a delete button, but I do not wish to use this.

Thank you in advance,
Dennis

GridView

answered on 19 Feb 2018