Questions on UI for WinForms Forum

1 answer

76 views

I have opened a ticket up for the following issue. I am posting it here in the forum to see if others have experienced the same problem.

After upgrading to Q2 SP1, I found that I can no longer "click to add new row" in the child's template of a bound hierarchy data grid without the error message "an entry already exists with that key". The key column is the primary key with an auto-increment property. If there is no hierarchy and only a top level data grid then the click to add a new row it does seem to work okay. However in the children templates it gives that error right away or after adding one row.

I attached the project that Stefan had sent me on the last ticket open. you can try to add new rows to the products table. I used the Northwind database from the examples folder. The only change I made was to make the primary key not a read-only field so that I can try to manually enter a value to see if that would work, which it didn't. Please let me know if you experience the same thing. If so, is there some workarounds? Being able to add new rows to the data grid is obviously pretty basic stuff and my application relies on it heavily.

Thanks,

Eyal

GridView

answered on 17 Aug 2010

2 answers

203 views

radscheduler Q2sp1 labels not appearing on appointments in month and timeline view

I am curently working on a winforms promotions module and i am using the scheduler control to display all the promotions that are occuring on certain dates for all our locations. The appointments are added to the control when the form that the control belongs to loads.

my code for creating the appointments is as follows

private void getAppointments()

{

radScheduler1.Appointments.Clear();

try

{

DataTable getPromoDates = getPromoTab.Tables["PROMOTION_ADVICE_HEADERS"].Copy();

DataTable getPromoColours = getPromoTab.Tables["PROMOTION_TYPES"].Copy();

for (int i = 0; i < getPromoDates.Rows.Count; i++)

{

Appointment myAppoint = new Appointment((DateTime)getPromoDates.Rows[i]["START_DATE"], (DateTime)getPromoDates.Rows[i]["END_DATE"

]); 

//the summary of the appointment is the promo tables primary key

myAppoint.Summary = getPromoDates.Rows[i]["PA_ID"].ToString();

try

{

                       //lookup the promo type and set the background of the appointment (custom backgrounds are defined elsewhere)

int getColour = int.Parse(getPromoDates.Rows[i]["PROMO_TYPE"].ToString());

var getBackCol = from o in getPromoColours.AsEnumerable() where int.Parse(o.Field<decimal>("PT_ID").ToString()) == getColour select new { colourNum = o.Field<decimal>("COLOR_ID") };

myAppoint.BackgroundId = int.Parse(getBackCol.ElementAt(0).colourNum.ToString());

}

catch (FormatException ex)

{

myAppoint.BackgroundId = 99;

}

string isprocessed = "Finalised";

if (getPromoDates.Rows[i]["Processed"].ToString() == "N")

{

isprocessed = "Open";

}

myAppoint.Visible = true;

//set the location attribute of the appointment to some meaningful string describing aspects of the promotion

myAppoint.Location = getPromoDates.Rows[i]["DESCRIPTION"].ToString() + " - " + ((DateTime)getPromoDates.Rows[i]["START_DATE"]).ToShortDateString() + " - " + ((DateTime)getPromoDates.Rows[i]["END_DATE"]).ToShortDateString();

myAppoint.Location = myAppoint.Location + " " + isprocessed;

myAppoint.Description = myAppoint.Location;

radScheduler1.Appointments.Add(myAppoint);

}

radScheduler1.AutoSize = true;

radScheduler1.BackColor = Color.LemonChiffon;

radScheduler1.Update();

radToolStripLabelElement2.Text = radScheduler1.ActiveView.StartDate.ToLongDateString() + " - " + radScheduler1.ActiveView.EndDate.ToLongDateString();

}

catch (Exception ex)

{

}
radScheduler1.ActiveViewType = SchedulerViewType.Month;


// radScheduler1.ActiveViewType = SchedulerViewType.Week;
 


 

 

SchedulerMonthView myMonthView = new SchedulerMonthView(DateTime.Now, true);
 
myMonthView.EnableWeeksHeader = 

 

false;
 
myMonthView.WeekCount = 1;
myMonthView.HeaderFormat = 

 

"dd-MM-yyyy";
 
myMonthView.ShowHeader = 

 

true;
 
myMonthView.ShowWeeksHeader = 

 

false;
 
radScheduler1.ShowAppointmentStatus = 

 

true;
 
 
 

 

//myAppoint.Location
 


 

 

//SchedulerWeekView myMonthView = new SchedulerWeekView();
 


 
radScheduler1.ActiveView = myMonthView;
 
radToolStripLabelElement1.Text = 

 

" ".PadRight(400, ' ');
 
radToolStripLabelElement2.Text = radScheduler1.ActiveView.StartDate.ToLongDateString() + 

 

" - " + radScheduler1.ActiveView.EndDate.ToLongDateString();
 
radScheduler1.Width = 

 

this.Width - 10;
 
radScheduler1.Height = 

 

this.Height - radToolStrip1.Height - 15 - radDateTimePicker1.Height;
 
radSplitContainer1.Width = 

 

this.Width - 10;
 
radSplitContainer1.Height = 

 

this.Height - radToolStrip1.Height - 15 - radDateTimePicker1.Height;
 
radGridView1.Width = 

 

this.Width - 20;

}

So when i run this program, the appointents are created correctly with the right background colours but the appointments have no labels. See attached screenshot. capture.png. The exact same code on 2010Q2 produced screenshot capture2.png.
Any ideas on how i can fix this? Also i could prefer to use the timeline view, the reason i used the month view was because in the Q1 release, i had the same issue as described above, but the monthview labeling worked but the timeline view didnt.

Scheduler and Reminder

answered on 17 Aug 2010

5 answers

182 views

Deserializing and new/removed dockpanels

Hi,

I'm using SaveXML and LoadXML to restore the layout of dockpanels. Let's say we release version 1 of our application with 2 dockpanels. In version 2 we need 3 dockpanels but using LoadXML will only load the 2 dockpanels from version 1. Also if we remove a dockpanel from version 1 it will still show up in version 2.

Is there a way to make the LoadXML NOT overload new/removed dockpanels?

Thanks,
Brian

Dock

answered on 17 Aug 2010

7 answers

354 views

DateTime Group

I have a column with a datetime, how i can group it by day, and not by the entire date and time?????

GridView

answered on 17 Aug 2010

5 answers

324 views

Show full datetime in column but group by date only

I'm using a databound gridview, binding to a custom list of "entity" type. The datetime field I want to group by is called Created.

public partial class frmSearchResults : Form

{

private List<Entity> Results;

public frmSearchResults(List<Entity> SearchResults)

{

InitializeComponent();

Results = SearchResults;

gridSearchResults.DataSource = Results;

gridSearchResults.BestFitColumns();

}

I've found some related posts in the forum but none have solved my issue yet (I'm new to rad controls so I may very well be missing or misunderstanding something). One post mentioned CellTemplates but I'm not sure to go about that and that solution was in the context of a non bound grid.

Thanks,
John

GridView

answered on 17 Aug 2010

2 answers

116 views

[Solved] Is each ScreenTip cached?

Hi,

I have a GridView and when someone hovers over a cell a ScreenTip is displayed with some more informations. Works good, but now there was a need to add a button where the user can turn off these ScreenTips. And surprisingly even after turning them of some ScreenTips are still getting displayed. For us it seems that all ScreenTips which have been already displayed seems to get displayed without calling the ScreenTipNeeded Event.

How can I change this behaviour?

Thanks,
Michael

General Discussions

answered on 17 Aug 2010

3 answers

418 views

Tooltip doesn't work for a RadButton

It's late, and maybe I'm missing something easy. But if I drop a simple RadButton on a form, I cannot get tooltips to show. I only can get tooltips to show for buttons on a toolstrip. I've tried setting AutoTooltip on the root item and the RadButtonElement inside the designer.

General Discussions

answered on 16 Aug 2010

8 answers

158 views

Unable to drop node between two other nodes

What do I need to do to be able to drop a node between two other nodes to reorder the nodes?

No matter what I do the dragNode is always added as a child to the node it is dropped on :-(
I have tried specifying SpacingBetweenNodes to see if that help but the only effect is that the dotted line jumps from one node to the next. I can never drop a node between two other nodes.

And on the same issue: Can you provide code examples how to handle nodes dropped between two other nodes? is the dragNode infact dropped on the "parent" node and can I in the mouseUp event get the previousSibling to decide where the node has been dropped?

Thanks...

Treeview

answered on 16 Aug 2010

1 answer

192 views

[Solved] Scheduler HeaderTitle

Is there a way to hard code a header title to the Scheduler?

So, rather than a pair of dates in the format "dd dddd" or "dd/mm", for example, having a title of "Calendar"?
If not, can you hide the top header, but still display the individual headers for each day?
The ShowHeader flag hides both sets of headers when I set it to False

Thanks

Scheduler and Reminder

answered on 16 Aug 2010

5 answers

373 views

Red Crossed Recatngle after databinding

Hi Guys,

We seem to be unable to go around a problem on rebinding rad-grid, while moving columns. Please, advise.

We have a rad-grid, which constantly is being re-binded with the code below (the code below is running on the main thread). While this rebinding is going on, a person is reordering the columns, fast (don't know why they do it..) and at some point of time an exception is thrown and the rad-grid gets replaced by a red crossed rectangle. We cannot refresh or recover the grid - hence the user has no choice but to restart the program.

Private Sub ReBindMe()
        Dim ds As New DataSet
        Try
            If Not gridTasks.IsInEditMode Then
                If TypeOf gridTasks.DataSource Is DataSet And gridTasks.InvokeRequired = False Then
                    '--------------- ERROR HAPPENS ON THE LINE BELOW -------------------
                    CType(gridTasks.DataSource, DataSet).Tables("SELECT_TASKS").Clear()
                    CType(gridTasks.DataSource, DataSet).Tables("GetCheckListTriggeredLogDocList").Clear()
                    CType(gridTasks.DataSource, DataSet).Tables("GetCheckListTriggeredLogDocList").Merge(dt_GetCheckListTriggeredLogDocList)
                    CType(gridTasks.DataSource, DataSet).Tables("SELECT_TASKS").Merge(dt_Tasks)
                End If
            End If
        Catch ex As System.Exception
            'Throws error
        End Try
    End Sub
---------------------------------------------------------------------------------------------------------------------------
System Error Message:
Object reference not set to an instance of an object.
Stack trace:
   at Telerik.WinControls.RadElement.ComposeShouldPaintSystemSkin()
   at Telerik.WinControls.RadElement.ShouldPaintSystemSkin()
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintOverride(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.VisualElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadItem.PaintOverride(IGraphics screenRadGraphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.UI.GridRowElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadItem.PaintOverride(IGraphics screenRadGraphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.UI.GridTableBodyElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadItem.PaintOverride(IGraphics screenRadGraphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.VisualElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadItem.PaintOverride(IGraphics screenRadGraphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.VisualElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadItem.PaintOverride(IGraphics screenRadGraphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RootRadElement.Paint(IGraphics graphics, Rectangle clipRectangle)
   at Telerik.WinControls.RadControl.OnPaint(PaintEventArgs e)
   at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
   at System.Windows.Forms.Control.WmPaint(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at Telerik.WinControls.RadControl.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at Telerik.WinControls.SafeNativeMethods.RedrawWindow(IntPtr hWnd, IntPtr rectUpdate, IntPtr hRgnUpdate, UInt32 uFlags)
   at Telerik.WinControls.UI.ThemedFormBehavior.RefreshNC()
   at Telerik.WinControls.UI.ThemedFormBehavior.OnWMNCActivate(Message& m)
   at Telerik.WinControls.UI.ThemedFormBehavior.HandleWndProc(Message& m)
   at Telerik.WinControls.UI.RadFormBehavior.HandleWndProc(Message& m)
   at Telerik.WinControls.UI.RadFormControlBase.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.IntDestroyWindow(HandleRef hWnd)
   at System.Windows.Forms.UnsafeNativeMethods.DestroyWindow(HandleRef hWnd)
   at System.Windows.Forms.NativeWindow.DestroyHandle()
   at System.Windows.Forms.Control.DestroyHandle()
   at System.Windows.Forms.Control.Dispose(Boolean disposing)
   at System.Windows.Forms.ContainerControl.Dispose(Boolean disposing)
   at System.Windows.Forms.Form.Dispose(Boolean disposing)
   at System.ComponentModel.Component.Dispose()
   at Telerik.WinControls.UI.GridHeaderCellElement.DisposeManagedResources()
   at Telerik.WinControls.DisposableObject.PerformDispose(Boolean disposing)
   at Telerik.WinControls.RadElement.PerformDispose(Boolean disposing)
   at Telerik.WinControls.DisposableObject.Dispose(Boolean disposing)
   at Telerik.WinControls.RadElement.DisposeChildren()
   at Telerik.WinControls.RadElement.PerformDispose(Boolean disposing)
   at Telerik.WinControls.DisposableObject.Dispose(Boolean disposing)
   at Telerik.WinControls.RadElement.DisposeChildren()
   at Telerik.WinControls.UI.GridTableBodyElement.CleanupRows()
   at Telerik.WinControls.UI.GridTableElement.Update_Reset(GridUINotifyAction action, GridViewRowInfo[] rowInfos)
   at Telerik.WinControls.UI.GridTableElement.UpdateCore(GridUINotifyAction action, GridViewRowInfo[] rowInfos)
   at Telerik.WinControls.UI.GridTableElement.Update(GridUINotifyAction action, GridViewRowInfo[] rowInfos)
   at Telerik.WinControls.UI.GridViewTemplate.UpdateUI(GridUINotifyAction action, GridViewRowInfo[] rowInfos)
   at Telerik.WinControls.Data.DataAccessComponent.UpdateAll(GridUINotifyAction action, GridViewRowInfo[] rowInfos)
   at Telerik.WinControls.UI.GridViewTemplate.Update(GridUINotifyAction action)
   at Telerik.WinControls.Data.DataAccessComponent.InitDataGrid()
   at Telerik.WinControls.Data.DataAccessComponent.currencyManager_ListChanged(Object sender, ListChangedEventArgs e)
   at System.Windows.Forms.CurrencyManager.OnListChanged(ListChangedEventArgs e)
   at System.Windows.Forms.CurrencyManager.List_ListChanged(Object sender, ListChangedEventArgs e)
   at System.Data.DataView.OnListChanged(ListChangedEventArgs e)
   at System.Data.DataView.IndexListChanged(Object sender, ListChangedEventArgs e)
   at System.Data.DataView.IndexListChangedInternal(ListChangedEventArgs e)
   at System.Data.DataViewListener.IndexListChanged(ListChangedEventArgs e)
   at System.Data.Index.<OnListChanged>b__2(DataViewListener listener, ListChangedEventArgs args, Boolean arg2, Boolean arg3)
   at System.Data.Listeners`1.Notify[T1,T2,T3](T1 arg1, T2 arg2, T3 arg3, Action`4 action)
   at System.Data.Index.OnListChanged(ListChangedEventArgs e)
   at System.Data.Index.FireResetEvent()
   at System.Data.Index.Reset()
   at System.Data.DataTable.ResetInternalIndexes(DataColumn column)
   at System.Data.DataTable.Clear(Boolean clearAll)
   at System.Data.DataTable.Clear()
   at ...................................................... line ...x

GridView

answered on 16 Aug 2010