Questions on UI for WinForms Forum

8 answers

158 views

cjordan

Hi everyone,

I have looked throught many of the forum posts and other documentations pages to see if there is a known solution to my problem... I did not find anything, but that does not mean that I did not overlook it. Anyway... I'm relatively new to the programming world and I am currently taking some programming classes as Lone Star's Montgomery College, where, in one of my assignments, I am to use the Telerik Rad Controls for Windows Forms. I downloaded and installed the trial software, but now that I have, I cannot create a new project in Visual Studio 2008. At first I thought that it would be a simple fix by just uninstalling and reinstalling, but I still cannot create a project, nor can I even open any of my old projects. When I try and open an old project, I simply get the error, "Unable to read the project file 'projectx.csproj'." If I try and create a new project, it acts like it is going to, but in the status bar at the bottom of the VS window, it says, "Creating project 'WindowsFormsApplication1'... project creation failed." I have a feeling that this is going to lead to me reinstalling VS but I'd like to avoid that if possible. Has anyone ever experienced this before or have a possible solution to help me out... unfortunately my assignments are due on a fairly strict deadline so the sooner I could get some help, the better... really, I'd just appreciate any kind of help at this point.

Thanks in advance,

C Jordan

General Discussions

answered on 23 Feb 2011

6 answers

431 views

label with link in it

I have RadLabel with the followng code:

lblInfo.Text =

"<html><span><a href=" + url + ">Getting Started Guide</a></span></html>"
I have to problems:
1. The url is pointong to pdf file. If pdf file is not installed it does not give any error, link just does not work without any indication that it attempted to open the file.
2. The of the link is 3 words with spaces. They are shown three separate links. The screenshot is attached.
Thank you
Lily

Buttons, RadioButton, CheckBox, etc

answered on 23 Feb 2011

2 answers

500 views

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

425 views

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

121 views

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

107 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

244 views

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

1.2K+ views

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

142 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

538 views

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