Questions on UI for WinForms Forum

2 answers

629 views

[Solved] Change border color of GroupBox header back to default

Hello,
I hope that someone can help me with this little issue.
I would like to change the color of a GroupBox Header back to the applied theme's default color.

I prgrammatically changed the border color with the following code to red to show an invalid user input (a kind of validation).


DirectCast(.rgrb_CountryOfOrigin.GroupBoxElement.Children(1).Children(1), BorderPrimitive).ForeColor = Color.Red

When the input is corrected the color should change back to its default value. Actually I use the desert theme.
Is there a possibillity to get a default color value for the assigned theme for the chosen control (eg GroupBox)?
If not, where can I find the theme values like colors etc?
Any help is appreciated.
Cheers Roberto

GroupBox

answered on 23 Feb 2011

4 answers

533 views

[Solved] RowState Question

I've been unable to find specifics in the documentation for how the underlying data rows get updated when binding an editable grid to a dataTable. I have a problem where I retrieve a dataTable, call AcceptChanges() on it, bind it to the grid and the data shows properly. When the user edits row cells and clicks the save button, the RowState properties on the underlying dataTable are not set to Modified as they should be.

Is there an Update Mode property or something I'm missing? I've tried clicking elsewhere inside and outside of the grid after editing and the rowState remains unchanged. Ideas?

EDIT: The following code appears to fix it. It's called just before saving:

    
            foreach (GridViewRowInfo row in grd.MasterGridViewTemplate.Rows)  
        
            {  
        
                DataRow dr = ((System.Data.DataRowView)(row.DataBoundItem)).Row;  
        
                dr.EndEdit();  
        
            }

Is this the right way I should be handling this? Seems a little kludgy...Thx

GridView

answered on 23 Feb 2011

1 answer

157 views

[Solved] Control will not collapse prior to task with UI lock

I am using a CommandBarDropDownList to trigger a refresh of the bindingsource for a GridView. The linq query takes a little while to execute, so the UI gets frozen, which is ok. Prior to executing the query, I would like the dropdownlist to fully collapse. I attempt to use application.doevents, but it still will not collapse until the query runs. See snippet below.

Thanks,
Neal

EDIT: Tried with regular DropDownList (not in commandbar) and same behavior. Tried with winforms combobox and the control successfully collapses.

Private Sub CommandBarDropDownList1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CommandBarDropDownList1.TextChanged

UpdateGrid()

End Sub

Private Sub UpdateGrid()

Application.DoEvents()

Me.Cursor = Cursors.WaitCursor

Dim db As New DAL_DataContext

db.Log = Console.Out

Dim qryRep = (From item In db.RepSaleDetails Where item.RepSaleHeader.Date.Value.Year = CommandBarDropDownList1.Text Select _

Descr = item.RepSaleHeader.Rep.LastName, _

Amount = CInt(item.Qty * item.Price), _

Month = item.RepSaleHeader.Date.Value.Month)

Dim qryCust = From item In db.CustSaleDetails Where item.CustSaleHeader.Date.Value.Year = CommandBarDropDownList1.Text _

And item.CustSaleHeader.RefNo >= 3000 Select _

Descr = "Ann", _

Amount = CInt(item.Qty * item.Price), _

Month = item.CustSaleHeader.Date.Value.Month

Dim qryInternet = From item In db.CustSaleDetails Where item.CustSaleHeader.Date.Value.Year = CommandBarDropDownList1.Text _

And item.CustSaleHeader.RefNo < 3000 Select _

Descr = "Ann Internet", _

Amount = CInt(item.Qty * item.Price), _

Month = item.CustSaleHeader.Date.Value.Month

Dim qryAll = qryRep.Concat(qryCust).Concat(qryInternet)

Dim MyTable = qryAll.GroupBy(Function(i) i.Descr).Select(Function(g) New TrendAnnual With _

{.Descr = g.Key, _

.Tot = g.Sum(Function(c) c.Amount), _

.Jan = g.Where(Function(c) c.Month = 1).Sum(Function(d) d.Amount), _

.Feb = g.Where(Function(c) c.Month = 2).Sum(Function(d) d.Amount), _

.Mar = g.Where(Function(c) c.Month = 3).Sum(Function(d) d.Amount), _

.Apr = g.Where(Function(c) c.Month = 4).Sum(Function(d) d.Amount), _

.May = g.Where(Function(c) c.Month = 5).Sum(Function(d) d.Amount), _

.Jun = g.Where(Function(c) c.Month = 6).Sum(Function(d) d.Amount), _

.Jul = g.Where(Function(c) c.Month = 7).Sum(Function(d) d.Amount), _

.Aug = g.Where(Function(c) c.Month = 8).Sum(Function(d) d.Amount), _

.Sep = g.Where(Function(c) c.Month = 9).Sum(Function(d) d.Amount), _

.Oct = g.Where(Function(c) c.Month = 10).Sum(Function(d) d.Amount), _

.Nov = g.Where(Function(c) c.Month = 11).Sum(Function(d) d.Amount), _

.Dec = g.Where(Function(c) c.Month = 12).Sum(Function(d) d.Amount)})

GridBindingSource.DataSource = MyTable.OrderBy(Function(i) i.Descr)

db.Dispose()

Me.Cursor = Cursors.Default

End Sub

DropDownList

answered on 23 Feb 2011

3 answers

133 views

Sequential appointments in montview side by side

Hello all,

When I make an appointment in dayview with the RangeFactor set to five minutes. I can make 2 appointments, say 10:00-10:10 and 10:10-11:00. When I switch to weekview with the standard RangeFactor of 30 minutes these appointsments are placed side by side and the visual representation looks like 10:00-10:30 and 10:00 to 11:00. The timevalues are correct inside the dialog and database. The visual timescale is wrong, they should not overlap, but be placed on below one another. If I set the RangeFactor to 5 minutes I cannot see al the appoints in one screen.

This sample can be reproduced by the demo radschedular (exept for the 5 minute timescale). I am using Radcontrols for Winforms Q3 2010 (2010.3.10.1215)

I could not find a answer on the forum, maybe I used the wrong search values. What am I doing wrong?

Kind regards Marc Henssen

Scheduler and Reminder

answered on 23 Feb 2011

1 answer

308 views

[Solved] GridViewComboBoxColumn show DropDown Arrow

Hello,

For a GridViewComboBoxColumn, is there a way to always show the dropdown arrow, so it is obvious to the user they can change the value? See screenshot attached

Thanks

GridView

answered on 22 Feb 2011

9 answers

1.3K+ views

[Solved] Enable/Disable context menu

Hi,
I need to enable disable context menu depending on the cell that is currently right clicked on. How do I go about this?

Thanks
Deepak

GridView

answered on 22 Feb 2011

9 answers

200 views

double clicking on elements queues events

When double clicking or more (n-clicking) on any radtreeview node, or radcontextmenuitem (at least, maybe it happens on other controls), the screen freezes for a few seconds, apparently cueing the events before even going to the event handler on the code behind. The result of this is that any action is repeated n-times.
Any workaround or help will be great!
Best Regards,

Mariano Liceaga

General Discussions

answered on 22 Feb 2011

19 answers

641 views

[Solved] Hierarchy Gridview - lazy load child\grandchild rows

I am using a gridview that i programmatically load 2 levels at run time. My question is, i want to be able to load the child rows of the 2nd level whenever the 1st level is expanded. i was able to locate the child is expanding and expanded events. But is there a way i can then go on and attach the children of the child row to the datagrid?????

GridView

answered on 22 Feb 2011

4 answers

368 views

Selecting first matching filtered row

Hello,

I have a filterable datagrid being used as a search screen by the user. When the user begins a search, we select the entry they last selected as a starting point and then set the focus to the filter text box for the first column of the grid.

As they type, we scroll to the first matching entry by hooking the FilterChanged event by executing

this.TableElement.ScrollToRow(((Telerik.WinControls.UI.GridViewRowInfo)(this.MasterGridViewInfo.TableFilteringRow)).ViewInfo.Rows[0]);

and it seems to work well.

1. I'd like to enhance it by actually selecting the row (IsCurrent = true) and then place the focus (cursor) back to the filter text box at the end of the text so the user can keep typing without overwriting the original filter criteria. I figured out how to do everything except placing the cursor at the end of the filter criteria text.

2. A problem did arise in using the mouse. After entering a filter and scrolling the list to the first match, using the mouse to click on an entry in the list causes the list to scroll down the screen 1 line and a blank line appears between the filter row and the first row of results.

I am using VS 2008 version 9.0.30729.1 SP, Framework 3.5 SP1, Telerik Winforms 2010.3.10.1215

Thanks,
Chet

GridView

answered on 22 Feb 2011

1 answer

97 views

How to move key out of the chart

Key on the right hand side of the bar chart is overlapping with the chart, I am unable to see the chart behind it. I don't know how to move key to the right so that it appears after chart is finished or make my chart less wide so that key does not overlap?

Chart (obsolete as of Q1 2013)

answered on 22 Feb 2011