Questions on UI for WinForms Forum

6 answers

420 views

Hello,

I noticed that when I try to dispose a ListView control from its own double click event the application crashes.

The control can be disposed from any other source (e.g. a button click) and this behavior occurs even on an empty List View.

Am I doing something wrong or is this a bug?

Thanks.

ListView

answered on 08 Sep 2015

5 answers

423 views

Sorting - Disable None

I want to toggle only between Ascending and Descending when the user clicks on the column header. I do not want the None option. Not sure what one would use the None option for anyway. That is not a sort.

GridView

answered on 08 Sep 2015

14 answers

261 views

Problems implementing a custom TreeView grid editor

I'm trying to implement a custom TreeView editor on the GridView and I'm experiencing two problems.
1. My editor is confined to the size of the cell and it needs to be much larger than that
2. When I attempt to data bind the control nothing is displayed.

Sample code:

public class TreeEditor : BaseGridEditor

{

protected override RadElement CreateEditorElement ()

{

RadTreeViewElement treeViewElement = new RadTreeViewElement ();

//BindData (treeViewElement); // This doesn't work

LoadData (treeViewElement); // This displays data

return treeViewElement;

}

private static void BindData(RadTreeViewElement treeViewElement)

{

List<NodeData> Nodes = new List<NodeData>();

NodeData root = new NodeData() { ID = 0 };

root.Children.Add(new NodeData() { ID = 1 });

root.Children.Add(new NodeData() { ID = 2 });

Nodes.Add(root);

treeViewElement.DataSource = Nodes;

treeViewElement.DisplayMember = "ID\\ID";

treeViewElement.ChildMember = "Nodes\\Children";

}

private static void LoadData (RadTreeViewElement treeViewElement)

{

RadTreeNode root = treeViewElement.Nodes.Add ("Root");

root.Nodes.Add ("First", 1);

root.Nodes.Add ("Second", 1);

}

public override object Value

{

get

{

RadTreeViewElement editor = (RadTreeViewElement) this.EditorElement;

if (editor.SelectedNode == null)

return string.Empty;

return editor.SelectedNode.ToString ();

}

set

{

//TODO: ?

}

GridView

answered on 07 Sep 2015

3 answers

194 views

PivotFieldList fields grouping

I am using a PivotFieldList associated to a PivotGrid which is bound to an in-memory table.

The Grid and the Field List work OK, but my problem is my table has too many columns. More than 200.

This make it a bit difficult for the user to choose fields from the field list.

I was wondering if there is a way to group fields in the PivotFieldList. Something like the "date" fields. Each group would be a node opening on user click and showing the available column.

PivotGrid and PivotFieldList

answered on 07 Sep 2015

1 answer

150 views

Crash when adding filter on a calculated column

# Context
- Using RadGridView
- Having a column named "MyDataColumn", which contains different decimal values, including zero.
- Using UI, add filter on "MyDataColumn" : "Greater than: 0"
- Added a calculated column named "MyCalculatedColumn", using expression "MyDataColumn / MyDataColumn".
- Note that, at this point, it doesn't crash since we added the "Greater than: 0" filter on "MyDataColumn" ... without that filter, it will crash, as we all know division by zero is impossible.

# Behavior
- Using UI, add a filter on "MyCalculatedColumn"
- Application crash

GridView

answered on 07 Sep 2015

2 answers

158 views

Grand Total row formatting

On my grid I am grouping by one field, and have gridview1.mastertemplate.ShowTotals = True so that I can show a grand total for columns when that grid is grouped. My issue is that I need to change the appearance of the grand total row differently than the other (group) summary rows in ViewCellFormatting. Is this possible, and if so how can I do it?

Thanks

GridView

answered on 03 Sep 2015

4 answers

510 views

Disable mouse wheel scrolling inside GridView

When in the edit mode, GridSpinEditor inside RadGridView allows the numeric value to change by scrolling mouse centerl scroll wheel. I need to disable this. How can I disable this feature?

This feature lets the users to scrolldown to negative values, which is not desirable.

Thanks.

GridView

answered on 03 Sep 2015

2 answers

133 views

Localization of the default context menu

Hello

What is the best way to adapt the text of the default context menu of a treeview ? I know that I could change the text property of each item on the ContextMenuOpnening but a more global solution as a Localization Provider will be welcome.

Thanks for your support

Treeview

answered on 03 Sep 2015

1 answer

119 views

Horizontal axe label truncated

Hi,
I'm using a graph in wich i specified an horizontal DatetimeCategoricalAxis.
I have a the first axe label trucated (attaced file).

Is it possible to fix this issue without changing the "LabelRotationAngle" value ?

Regards,

Mathieu

ChartView

answered on 03 Sep 2015

2 answers

106 views

Custom RadListFilterPopup > Add new RadMenuItem

Hi,

I need to customize the filter popup to add some new choices.

I've tried to add item this way :

private void radGrid_FilterPopupRequired(object sender, FilterPopupRequiredEventArgs e)
{
var popUp = e.FilterPopup as RadListFilterPopup;
if (popUp == null)
return;

var rmiSortByColor = new RadMenuItem("Sort by color");
popUp.Items.Insert(0, rmiSortByColor);

[...]

Unfortunally, as you can see in the provided screenshot, the item is very huge, and the height increase proportionally when I resize the popup.

I have the exact same problem when I add a simple separator.

Did I miss something ?

GridView