Questions on UI for WinForms Forum

3 answers

412 views

Recolor SpecialDays and then reset colour

I have a schedule control and a calendar control on a form.

When a user clicks on a cell in the schedule control (in timeline view), the calendar updates to show, as specialdays, all the days for the month that has the day in it that the user selected.

The specialdays and focusedDate have a very similar colour and I want to recolour the special days and focuseddate colours so they are easily identifiable.

Ive started changing the special days color, but when a user clicks in a different scheduler cell, the background color of the calendar remains how it was set previously.

I'm using the ElementRender event of the calender control to see if its a special day, and if it is colour it. I'm not sure how to reset it if it isnt.

Code below, and any help greatly appreciated.

private void Calendar_ElementRender(object sender, RenderElementEventArgs e)

{

foreach (RadCalendarDay date in ((RadCalendar)sender).SpecialDays)

{

if (e.Day.Date == date.Date)

{

e.Element.BackColor = Color.Red;

return;

}

Calendar, DateTimePicker, TimePicker and Clock

answered on 26 Jul 2012

2 answers

115 views

[Solved] GridViewHyperlinkColumn ignoring TextAlignment...bug??

Hello,

I have Hyperlink columns and am noticing it's just ignoring the TextAlignment property. I changed the "GridViewHyperlinkColumn" to "GridViewTextBoxColumn" and the TextAlignment works just fine.

var column = new GridViewHyperlinkColumn() { FieldName = sColumnNames[i], HeaderText = sColumnDisplayNames[i],

HeaderTextAlignment = ContentAlignment.MiddleLeft, TextAlignment = ContentAlignment.MiddleCenter };

rgvWidget.Columns.Add(column);

GridView

answered on 25 Jul 2012

1 answer

291 views

Programmatically Update Child GridViewComboboxColumn Cell Value

Hello,
I use RadGridview in my project. I use unbound mode and giving datasource to grid from a collection. I have one gridview template, each row has child rows. In child rows, there is a GridViewComboboxColumn.

My problem is, i am trying to update child row GridviewComboboxColumn value programmatically on CellEndEdit event of grid. I edit the column, i see its edited in debug, but the changes doesnt display in the cell. Why changes doesnt display, how can i make it display?

GridView

answered on 25 Jul 2012

1 answer

78 views

Call gridview value from custom griddatacellement

Hello Telerik.

Can i call a gridview value such as (name,tag) from my custom griddatacellelement.

GridView

answered on 25 Jul 2012

19 answers

504 views

Automatic adding a control to the GAC

Is there a way of automaticaly add a controll to the GAC? I need to make an install package to my program to deploy in other computers.

Thanks

General Discussions

answered on 25 Jul 2012

2 answers

190 views

[Solved] ThreadException after drag and drop

Hi,

I have a treeview that shows account numbers in a hierarchy of account groups.
MultiSelect is on for the treeview.
Sometimes (not always), when I drop multiple items on an account group node a thread exception occurs.
I recently upgraded the RadControls from 'Q3 2011 SP1' to 'Q2 2012'. In the older version this problem did not exist. I did not change code, only the Telerik dll changed.

Some more details:

Message = Object reference not set to an instance of an object.
Stacktrace = at Telerik.WinControls.UI.TreeNodeElement.ApplyStyle()
at Telerik.WinControls.UI.TreeNodeElement.OnPropertyChanged(RadPropertyChangedEventArgs e)
at Telerik.WinControls.RadObject.RaisePropertyNotifications(RadPropertyValue propVal, Object oldValue, Object newValue, ValueSource oldSource)
at Telerik.WinControls.RadObject.ResetValueCore(RadPropertyValue propVal, ValueResetFlags flags)
at Telerik.WinControls.UI.TreeNodeElement.Detach()
at Telerik.WinControls.UI.BaseVirtualizedContainer`1.RemoveElement(Int32 position)
at Telerik.WinControls.UI.BaseVirtualizedContainer`1.MeasureElements()
at Telerik.WinControls.UI.BaseVirtualizedContainer`1.MeasureOverride(SizeF availableSize)
at Telerik.WinControls.RadElement.MeasureCore(SizeF availableSize)
at Telerik.WinControls.RadElement.Measure(SizeF availableSize)
at Telerik.WinControls.UI.ScrollViewElement`1.MeasureViewElement(SizeF availableSize)
at Telerik.WinControls.UI.ScrollViewElement`1.MeasureView(SizeF availableSize)
at Telerik.WinControls.UI.ScrollViewElement`1.MeasureOverride(SizeF availableSize)
at Telerik.WinControls.UI.VirtualizedScrollPanel`2.MeasureOverride(SizeF availableSize)
at Telerik.WinControls.RadElement.MeasureCore(SizeF availableSize)
at Telerik.WinControls.RadElement.Measure(SizeF availableSize)
at Telerik.WinControls.RootRadElement.MeasureOverride(SizeF availableSize)
at Telerik.WinControls.RootRadElement.MeasureCore(SizeF availableSize)
at Telerik.WinControls.RadElement.Measure(SizeF availableSize)
at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayout()
at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayoutCallback(ILayoutManager manager).

Relevant code:

public partial class AccountGroupList : AccountsFormBase

{

public AccountGroupList()

{

InitializeComponent();

accountGroupTreeView.NodeMouseDown += AccountGroupTreeViewNodeMouseDown;

accountGroupTreeView.DragStarting += AccountGroupTreeViewDragStarting;

accountGroupTreeView.DragOverNode += AccountGroupTreeViewDragOverNode;

accountGroupTreeView.DragEnding += AccountGroupTreeViewDragEnding;

accountGroupTreeView.ContextMenuStrip = contextMenuStrip;

accountGroupTreeView.AllowDragDrop = true;

accountGroupTreeView.MultiSelect = true;

}

protected override void OnDataBind()

{

FillAccountGroupTreeView();

}

private void FillAccountGroupTreeView()

{

accountGroupTreeView.Nodes.Clear();

//find and add main account groups to tree

foreach (AccountOrAccountGroupInfo mainAccountGroup in Model.AccountGroupHierarchy.Where(x => !x.EreportingId.HasValue && !x.ParentId.HasValue))

{

var mainAccountGroupNode = new AccountGroupNode(mainAccountGroup.AccountGroup, true) {Tag = mainAccountGroup};

//find and add sub account groups of main account group

foreach (AccountOrAccountGroupInfo subAccountGroup in Model.AccountGroupHierarchy.Where(x => !x.EreportingId.HasValue && x.ParentId == mainAccountGroup.Id))

{

var subAccountNode = new AccountGroupNode(subAccountGroup.AccountGroup, false) { Tag = subAccountGroup };

//find and add ereporting accounts of sub account group

foreach (AccountOrAccountGroupInfo eReportingAccount in Model.AccountGroupHierarchy.Where(x => x.EreportingId.HasValue && x.ParentId == subAccountGroup.Id))

{

var eReportingAccountNode = new EreportingAccountNode(eReportingAccount.AccountGroup)

{Tag = eReportingAccount, AllowDrop = false};

subAccountNode.Nodes.Add(eReportingAccountNode);

}

mainAccountGroupNode.Nodes.Add(subAccountNode);

}

//find and add ereporting accounts of main account group

foreach (AccountOrAccountGroupInfo eReportingAccount in Model.AccountGroupHierarchy.Where(x => x.EreportingId.HasValue && x.ParentId == mainAccountGroup.Id))

{

var eReportingAccountNode = new EreportingAccountNode(eReportingAccount.AccountGroup) { Tag = eReportingAccount };

mainAccountGroupNode.Nodes.Add(eReportingAccountNode);

}

accountGroupTreeView.Nodes.Add(mainAccountGroupNode);

}

//find and add ereporting accounts that are not linked to an account group

foreach (AccountOrAccountGroupInfo eReportingAccount in Model.AccountGroupHierarchy.Where(x => x.EreportingId.HasValue && !x.ParentId.HasValue))

{

var eReportingAccountNode = new EreportingAccountNode(eReportingAccount.AccountGroup) { Tag = eReportingAccount, AllowDrop = false };

accountGroupTreeView.Nodes.Add(eReportingAccountNode);

}

#region drag, drop, context menu

private void AccountGroupTreeViewDragStarting(object sender, RadTreeViewDragCancelEventArgs e)

{

try

{

//determine if dragging is allowed for selected node

if (e.Node != null)

{

//An ereporting account node can be dragged

var ereportingAccountNode = e.Node as EreportingAccountNode;

if (ereportingAccountNode != null)

{

e.Cancel = false;

}

else

{

//A group node can only be dragged if it has no child groups

var accountGroupNode = e.Node as AccountGroupNode;

if (accountGroupNode != null)

{

e.Cancel = (accountGroupNode.SubAccountGroupCount > 0);

}

else

{

e.Cancel = true;

}

else

{

e.Cancel = true;

}

catch (Exception)

{

e.Cancel = true;

throw;

}

private void AccountGroupTreeViewDragOverNode(object sender, RadTreeViewDragCancelEventArgs e)

{

try

{

//determine if the dragged node can be dropped on the current hovered node

if (e.Node != null)

{

var accountNode = e.Node as AccountNodeBase;

if (accountNode != null)

{

e.Cancel = !(accountNode.CanBeDroppedOnTarget(e.TargetNode));

}

else

{

e.Cancel = true;

}

else

{

e.Cancel = true;

}

catch (Exception)

{

e.Cancel = true;

throw;

}

private void AccountGroupTreeViewDragEnding(object sender, RadTreeViewDragCancelEventArgs e)

{

try

{

//recheck if it is correct to drop the dragged node on the target node (this event is fired multiple times when multiple nodes are dragged at once)

//execute the action that is expected

var accountNode = e.Node as AccountNodeBase;

if (accountNode != null)

{

if (accountNode.CanBeDroppedOnTarget(e.TargetNode))

{

var draggedAccountGroupHierarchy = (AccountOrAccountGroupInfo)accountNode.Tag;

var targetAccountGroupHierarchy = ((AccountOrAccountGroupInfo)e.TargetNode.Tag);

if (e.Node is EreportingAccountNode)

{

Controller.MoveEreportingAccountToAccountGroup(draggedAccountGroupHierarchy.Id, targetAccountGroupHierarchy.Id);

}

else

{

Controller.MoveAccountGroupUnderAccountGroup(draggedAccountGroupHierarchy.Id, targetAccountGroupHierarchy.Id);

}

else

{

e.Cancel = true;

}

else

{

e.Cancel = true;

}

catch (Exception)

{

e.Cancel = true;

throw;

}

#endregion

#region Tree Node classes

private abstract class AccountNodeBase : RadTreeNode

{

protected readonly Font TreeNodeFont = new Font("Segoe UI", 8.25f);

public abstract bool CanBeDroppedOnTarget(RadTreeNode target);

}

private class AccountGroupNode : AccountNodeBase

{

public bool IsRootNode { get; private set; }

public int SubAccountGroupCount

{

get { return Nodes.Count(o => o is AccountGroupNode); }

}

internal AccountGroupNode(string text, bool isRootNode)

{

Font = TreeNodeFont;

Text = text;

IsRootNode = isRootNode;

}

public override bool CanBeDroppedOnTarget(RadTreeNode target)

{

//a group node can be dropped on target if

// -the target is also a group node

// -the node has no child groups

// -the node is a main group (level 1)

// -the target node is not the current parent of the node

var targetNode = target as AccountGroupNode;

return targetNode != null && SubAccountGroupCount == 0 && targetNode.IsRootNode && targetNode != Parent;

}

private class EreportingAccountNode : AccountNodeBase

{

internal EreportingAccountNode(string text)

{

Font = TreeNodeFont;

Text = text;

}

public override bool CanBeDroppedOnTarget(RadTreeNode target)

{

//an ereporting node can be dropped on any group node that is not the current parent of the ereporting node

if (!(target is EreportingAccountNode) && target != Parent)

{

return true;

}

return false;

}

#endregion

}

Treeview

answered on 25 Jul 2012

5 answers

299 views

windows radRotator rotation direction

How to change the rotation direction to be horizontal and moving from left to right, or right to left and displaying more than one item, to be like the marquee in html components ?

regards...

Rotator

answered on 25 Jul 2012

0 answers

147 views

Multiple Y axis help

Hello,

I need some help with creating 2 y axes. I have looked at the below thread but its not what I'm trying to do
http://www.telerik.com/community/forums/winforms/chart/multiple-y-axis.aspx

I don't need to show a different series on the 2nd y axis. I need 1 row (the Total row) for both series to be shown on the 2nd y axis.

Please take a look at the attached screenshot. SInce the OVERALL item is a sum of the ones above it, it hogs up all the space and the rest of the items appear squished. Thats why I want to show the OVERALL item against it's own y axis and the rest against another y axis. The only other (non elegant) solution I can think of is having 2 Radcharts, but I'm trying to see if that can be avoided.

Chart (obsolete as of Q1 2013)

asked on 24 Jul 2012

5 answers

784 views

[Solved] Sorting in ListView

I want to sort my ListView on Clicking a column
in similarity to what we do with General ListView in .Net

private void listView1_ColumnClick(object sender, System.Windows.Forms.ColumnClickEventArgs e)
{
}
Imagine the column Header is "Count" and the "Name" is "Column_0"
In it's default behavior of the ListView 
it is sorted with this logic (as strings):

79 < 8 < 89 < 9 , ....

The Designer's Code :
Telerik.WinControls.UI.ListViewDetailColumn listViewDetailColumn2 = new Telerik.WinControls.UI.ListViewDetailColumn("Column 1", "Count");
Telerik.WinControls.Data.SortDescriptor sortDescriptor1 = new Telerik.WinControls.Data.SortDescriptor();
I have written a comparer like this for the Default .Net Windows Forms Controls ListView :

public class CountSort: IComparer
{
    public int Compare(object x, object y)
    {
        Product w1 = (Product)x;            
 
        Product w2 = (Product)y;
 
        if (w1.Count> w2.Count)
            return 1;
        if (w1.Count< w2.Count)
            return -1;
        else
            return 0;
    }
}
But now don't know how to link all the items and figure this out.
needed help, thanks

ListView

answered on 24 Jul 2012

10 answers

408 views

BubbleBar

Hi:
How can i do, BubbleBar Vertically?
on the example only is horizontally...
Thanks!!
my apologies for my english!!

General Discussions

answered on 24 Jul 2012