Questions on UI for WinForms Forum

0 answers

120 views

Gridview error

I have a radgridview with 3 columns, one of which is a gridviewlookupcolumn.
The data is populated using LinqToSql classes as followingf

DataClasses2DataContext

dcl = new DataClasses2DataContext();

GridViewLookUpColumn gvc = new GridViewLookUpColumn("SuitabilityIndex1");

radGridView1.DataSource = dcl.USBDevices;

radGridView1.Columns[

"Id"].IsVisible = false;

radGridView1.Columns[

"SuitabilityIndex"].IsVisible = false;

radGridView1.Columns[

"Manufacturer"].StretchVertically = true;

System.Collections.Generic.

List<short> dd = new List<short>();

dd.Add(0);

dd.Add(1);

dd.Add(2);

gvc.DataSource = dd;

radGridView1.Columns.Add(gvc);

radGridView1.Columns[

"SuitabilityIndex1"].FieldName = "SuitabilityIndex";

The field SuitabilityIndex in the database is smallInt that allows null. The datasource for the lookup column is short

When I change the value in the lookup column, it fires the data error event with the following error

{Telerik.WinControls.UI.GridViewDataErrorEventArgs}

base {Telerik.WinControls.UI.GridViewCellCancelEventArgs}: {Telerik.WinControls.UI.GridViewDataErrorEventArgs}

Context: Commit

Exception: {"Object of type 'System.String' cannot be converted to type 'System.Nullable`1[System.Int16]'."}

ThrowException: false

I think the problem is that the lookupcolumn thinks that the datatype os string. I can say that for sure since the allignmnet of values on the grid are to the left and not to the right.
I tried setting the datatype of the column to short, but did not help

Thanks
Deepak

GridView

asked on 14 Jan 2010

1 answer

80 views

[Solved] RadMaskedEditBoxElement in ribbonBar

Hi,
I am trying to add a RadMaskedEditBoxElement in RadRibbonBarButtonGroup on the ribbonBar. I am fine with adding it but when i am trying to set the mask value , the mask does not exists. All the properties of the RadMaskedEditBoxElement are like radtextbox. On the other hand when i am adding the RadMaskedEditBoxElement on winform it works perfectly.

I tried to add the RadMaskedEditBoxElement from the code with a host element , nothing.

Can you help me ?

RibbonBar

answered on 14 Jan 2010

1 answer

228 views

multi column node

I have created a hieriachry node system as shown in your examples. However, I wish the datamember in the last node to be made up to 2 fields from the DB. How can this be done?

I also have a gridview which I wish to show the same hieriachy data that is in sync with the treeview.

Your assistance will be appreciated.

Treeview

answered on 14 Jan 2010

3 answers

230 views

Replace EditForm?

Even though I can change using Inherited form, I was wondring if there is a way to completely disable it and replace it with my own form that would update the SQL tables directly (along with other things in the database). My question is about disabling the edit dialog and relacing it with my own... If you happend to provide examples, would you please provide VB.net?

Thanks

Scheduler and Reminder

answered on 14 Jan 2010

0 answers

116 views

Tab key not switching between columns

Good morning,

I am creating gridviews programmatically but the TAB key is not functioning within the gridviews. When I click the tab key it either does nothing or, if the controls is in edit mode, it just highlights the entire value within the control. How do I get the TAB key to jump between cells?

    
            RadGridView gridView = new RadGridView();  
        
            gridView.Name = name;  
        
            gridView.Anchor = (System.Windows.Forms.AnchorStyles)(System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right);  
        
            gridView.AutoSize = true;  
        
            gridView.AutoScroll = true;  
        
            gridView.MasterGridViewTemplate.BestFitColumns();  
        
            //gridView.MasterGridViewTemplate.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;  
        
            gridView.MasterGridViewTemplate.AutoGenerateColumns = false;  
        
            gridView.MasterGridViewTemplate.AllowAddNewRow = true;  
        
            gridView.ShowGroupPanel = false;  
        
            gridView.ContextMenuOpening += new ContextMenuOpeningEventHandler(gridView_ContextMenuOpening);  
        
            gridView.GridBehavior = new MyBehavior(); // see behavior below  
        
            gridView.CellBeginEdit += new GridViewCellCancelEventHandler(gridView_CellBeginEdit);  
        
            gridView.CellValueChanged += new GridViewCellEventHandler(gridView_CellValueChanged);  
        
            gridView.StandardTab = true;

I've tried the "StandardTab" property set to true and false, neither of them work.

Thank you,
Scott Vercuski

GridView

asked on 13 Jan 2010

2 answers

112 views

GridViewDatetimeColum

How can disable DatePickerDateTimeShower or how can selecting automatic date without clicking the control DatePickerDateTimeShower

Regards

GridView

answered on 13 Jan 2010

1 answer

68 views

BestFit problem on Q3 2009

Hi,

We have a problem with the rendering of the grid(version 2009.3.9.1203) since we upgrade to version 2009 Q3.

He is the code we use to set the columns width :

Me.Instance.DataSource = Value

Me.Instance.GridElement.BeginUpdate()

If Me.Instance.MasterGridViewTemplate.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.None Then

For Each column As GridViewDataColumn In Me.Instance.Columns

column.BestFit()

End If
Me.Instance.GridElement.EndUpdate()

Since we update, the column.BestFit() don't work and all column have like width of 1...? We usually have grid with more than 10 columns and it has always work fine.

What should we do to fix it?

thx

GridView

answered on 13 Jan 2010

7 answers

416 views

Adjusting scroll speed?

Hello.

Default behaviour for a radgridview is to scroll one whole "page" when using the mousewheel to scroll, however I would like to change this to something like 5 rows at a time. Is this possible?

Best Regards, Joel

GridView

answered on 13 Jan 2010

3 answers

314 views

Insert RadioButton in a column(windows Form) of radGridview

How to insert a Radion Button Column in radGridview in Windows form?.

GridView

answered on 13 Jan 2010

2 answers

109 views

[Solved] Treeview with big checkboxes

Hi all,

I was wondering if there's a way to resize the treeview checkboxes - I am changing an application to be used with a touchscreen, and the current checkbox is too small to click using your finger. Anyone has any advice?

Thanks.

Treeview

answered on 13 Jan 2010