Questions on UI for WinForms Forum

1 answer

192 views

Error when DataSource has nullable fields

Hello,

I have a radDataGrid and the source is a List<customerClass>, where curstomer class have nullable fields ( DateTime? and int? ).
When i want to set the filter in the filterRow on such a column I get the following exception.

How can I make the filter working on such columns?

Regards
Roland

System.InvalidCastException wurde nicht behandelt.

Message=

"Ungltige Umwandlung von \"System.DateTime\" in \"System.Nullable`1[[System.DateTime, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]\"."

Source=

"mscorlib"

StackTrace:

bei System.Convert.DefaultToType(IConvertible value, Type targetType, IFormatProvider provider)

bei System.DateTime.System.IConvertible.ToType(Type type, IFormatProvider provider)

bei System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)

bei Telerik.WinControls.UI.GridFilterCellElement.SetFilterValue(Object value)

bei Telerik.WinControls.UI.GridFilterCellElement.set_Value(Object value)

bei Telerik.WinControls.UI.RadGridView.UpdateFiltering()

GridView

answered on 09 Apr 2010

1 answer

263 views

RadMenuItem Style

What I am trying to do is to change the style/coloring of a RadMenuItem. I want the left side of the menu to have a different coloring style then of the whole RadMenuItem, left section meaning the section that contains the icons/images of the menu item.

When I set the below properties it changes the whole item.

CType(MenuControl.GetChildAt(0), Telerik.WinControls.Primitives.FillPrimitive).BackColor = System.Drawing.Color.FromArgb(CType(CType(215, Byte), Integer), CType(CType(255, Byte), Integer), CType(CType(255, Byte), Integer))

CType(MenuControl.GetChildAt(0), Telerik.WinControls.Primitives.FillPrimitive).BackColor2 = System.Drawing.Color.FromArgb(CType(CType(132, Byte), Integer), CType(CType(255, Byte), Integer), CType(CType(78, Byte), Integer))

CType(MenuControl.GetChildAt(0), Telerik.WinControls.Primitives.FillPrimitive).BackColor3 = System.Drawing.Color.FromArgb(CType(CType(63, Byte), Integer), CType(CType(255, Byte), Integer), CType(CType(10, Byte), Integer))

CType(MenuControl.GetChildAt(0), Telerik.WinControls.Primitives.FillPrimitive).BackColor4 = System.Drawing.Color.FromArgb(CType(CType(78, Byte), Integer), CType(CType(255, Byte), Integer), CType(CType(255, Byte), Integer))

Thanks in advance for your help.

Menu

answered on 09 Apr 2010

11 answers

638 views

[Solved] AutoSizeRows and Row MinHeight terrible issue.

hi Guys,

Sorry i m quite new to the Telerik RadControls.
I have a terrible issue with the autosize property of the RadGridview for winforms.

I set my AutoSizeRows to True at design time and autosize columns mode = none.

then in my code..
MYGridView.DataSource = dataSet.Tables[0].DefaultView;
MYGridView.Columns["Comments"].MaxWidth = 500;
MYGridView.Columns["Comments"].WrapText = true;
    foreach (Telerik.WinControls.UI.GridViewDataColumn item in MYGridView.Columns)
                   {
                       item.BestFit();
                   }
And after this. i when i look at my girdview its autosized its contents to the size of of the font in the cells. which is very very ugly.
i want to set a minHeight for the columns but i am unable to do so.. please help...

i have tried what is discussed in these threads but of now use.

http://www.telerik.com/community/forums/winforms/gridview/wraptext-and-autosizerows-true.aspx
http://www.telerik.com/community/forums/winforms/gridview/wrapping-text-in-cell.aspx

Please give me your valuable suggestions.

Thanks in advance.

GridView

answered on 09 Apr 2010

0 answers

153 views

Appointment Display Issues

...

Scheduler and Reminder

asked on 08 Apr 2010

8 answers

369 views

[Solved] visual style builder has encountered a problem

hi
i am using telerik rad control winforms q1 2010 with visual studio 2005, when i am run the telerik visual style builder it display an error message "Telerik.VisualStyleBuilder has encountered a problem and needs to close. we are sorry for the inconvenience.
what is the reason for display the error message?
plz help me, its very urgent

Themes and Visual Style Builder

answered on 08 Apr 2010

1 answer

126 views

[Solved] thickness of frame around expanded hierarchy

Dear Telerik users

Is it possible to get rid of the thick frame displaying around every sub-hierarchy that is expanded?

For my purpose it would be more visually appealing if the frame would only be 1px in width.

Thank you

Markus

GridView

answered on 08 Apr 2010

1 answer

72 views

Cannot set RadSlpitButton DefaultItem Property within the designer (VS 2008)

Instructions on :

http://www.telerik.com/help/winforms/ui_radsplitbuttonitems.html

Explain how to set the DefaultItem property via code, but this property does not seem to be able to be set via the designer.

Is this intentional?

Buttons, RadioButton, CheckBox, etc

answered on 08 Apr 2010

4 answers

237 views

DataSource for radcarousel

Hi

I want to give a datatable datasource for the radcarousel ,

I need that the carousel RadbuttonElements will be dinamic

i'm familiar with the manual way ( one by one) , I want to know the way to declare once the DataSource ( radcarousel1.datasource=datatable) without the enumeration ( for each)

pls help me, its urgent!!!
thank you.

Carousel

answered on 08 Apr 2010

1 answer

108 views

Missing Some Items in Carousel

hi
I Add for example 20 items in Carousel but at runtime shows only 10 items.
what Should I Do?
Thanks Alot.

Carousel

answered on 08 Apr 2010

3 answers

455 views

gridview Row error

In row validating event I check some values and if is a wrong value I wrote

e.Row.ErrorText = string.empty
if my condition .is not OK
e.Row.ErrorText = "BlaBla"
e.Cancel = true
end if

All very nice but after i validate and this new row is inserted in datagrid , I still have the red error sign besides of the "Click here to add new row" .

What I'm doing wrong ?

Mihai

GridView

answered on 08 Apr 2010