Hello,
  Im using telerik 2010.2.10.713 version library, i want on my radgridview to validate the filled fields by the user at the end of editing the row, i have as selection mode the fullrow select, for that purpose i used row validating event wich i used on datagridview but this didnt work on radgrid view, im trying:

if (radGridView1.Rows[e.RowIndex].Cells["usu_clave"].Value == null)              {                    radGridView1..Rows[e.RowIndex].Cells["usu_clave"].ErrorText ="some error";               e.Cancel = true;     //prevent the user to save changes                       return;             }



what is going wrong?

thanks!

 
Hi,

I have a grid view , which has paging enabled.
When i try to change the page size , i am getting the below error.

" Specified argument was out of the range of valid values.
Parameter name: ItemHierarchicalIndex

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code."

Please let me know if there is a fix for this.

Thanks,
Raghav.

my application uses BackgroundWorker to initialize user controls and load data models for the control to keep the user interface responsive. i have a custom control which uses page view to show different custom user controls. i load data for the control and instantiate the control in a background thread. after initializations the data model and the control is added to a global list of controls. the main ui then shows the control in a tab document. now when i try to add it to the tab the page view page object throws an exception mentioning cross thread access. i have checked for cross thread access before adding the control to the tab strip. it only happens if i use a page view control inside the my custom user control. instead if i use a tab strip than page view in my custom control it works fine.

how can i avoid this exception?

Hi,
Thanks for the great work.
Am very new to telerik Rad Charts.
I would like to Create 2 Bar Charts on 1 windows Form using VB.net with Data coming from a Database.

I am looking at creating SQL Statements for each of these 2 Charts with the X and Y axis for the Charts in mind.
i.e Select Products, Prices from ProductSale

Kindly provide a sample example that can enable me pick data from the Database and Bind this Data to the Bar Charts.
I have tried but havent been able to get a newby example of this kind from the forum yet

Thank U.





 

Hello

I created a new form, added a RadGridView to it, and populated it using a query containing a UNION statement.



Even with the ReadOnly=false, when I changed a cell's value and clicked elsewhere, a "Data Exception" message saying "Column 'a' is read only." poped up. I put my UNION statement in a view, called the view, and everything worked as expected.

Hi,

We are using Telerik winform version 2009.3.9.1203. In that, we have used Gridview with the Grouping. And, we need to give the ability to add a new row at any row position. But, when we code that, the grouping is not reflecting properly. Because of which the newly added row is always go to the top.

Attached is the sample screenshot for your reference.

Please let me know, the solution for this.

Hi,

I am using a PrintPreviewDialog, when I click on the Settings Button, I get the Excption below.
To open the Dialog I am only calling the PrintPreview() Method of an RadGridView. Thie error occurs in Telerik RadControls Q2 and Q3 2012 for Winforms. How can I avoid this error?

Kind Regards,
Li

Here is the ErrorMessage:

The value '0' is not a valid value for the enum 'PaperSourceKind'.

   at System.ComponentModel.EnumConverter.ConvertTo(ITypeDescriptorContext context, CultureInfo culture, Object value, Type destinationType)
   at System.ComponentModel.TypeConverter.ConvertToString(Object value)
   at System.Drawing.Printing.PaperSource.ToString()
   at Telerik.WinControls.UI.ListDataLayer.GetUnformattedValue(RadListDataItem item)
   at Telerik.WinControls.UI.RadListDataItem.SetDataBoundItem(Boolean dataBinding, Object value)
   at Telerik.WinControls.UI.ListControlListSource.InitializeBoundRow(RadListDataItem item, Object dataBoundItem)
   at Telerik.WinControls.Data.RadListSource`1.InitializeBoundRows()
   at Telerik.WinControls.Data.RadListSource`1.Initialize()
   at Telerik.WinControls.Data.RadListSource`1.Bind(Object dataSource, String dataMember)
   at Telerik.WinControls.Data.RadListSource`1.set_DataSource(Object value)
   at Telerik.WinControls.UI.ListDataLayer.set_DataSource(Object value)
   at Telerik.WinControls.UI.RadListElement.set_DataSource(Object value)
   at Telerik.WinControls.UI.RadDropDownListElement.set_DataSource(Object value)
   at Telerik.WinControls.UI.RadDropDownList.set_DataSource(Object value)
   at Telerik.WinControls.UI.PrintSettingsDialog.LoadSettings()
   at Telerik.WinControls.UI.GridViewPrintSettingsDialog.LoadSettings()
   at Telerik.WinControls.UI.PrintSettingsDialog.set_PrintDocument(RadPrintDocument value)
   at Telerik.WinControls.UI.PrintSettingsDialog..ctor(RadPrintDocument document)
   at Telerik.WinControls.UI.GridViewPrintSettingsDialog..ctor(RadPrintDocument document)
   at Telerik.WinControls.UI.RadGridView.Telerik.WinControls.UI.IPrintable.GetSettingsDialog(RadPrintDocument document)
   at Telerik.WinControls.UI.RadPrintPreviewDialog.OnShowPrintSettingsDialog()
   at Telerik.WinControls.UI.RadPrintPreviewDialog.buttonSettings_Click(Object sender, EventArgs e)
   at Telerik.WinControls.RadElement.OnMouseDown(MouseEventArgs e)
   at Telerik.WinControls.RadItem.OnMouseDown(MouseEventArgs e)
   at Telerik.WinControls.RadElement.OnCLREventsRise(RoutedEventArgs args)
   at Telerik.WinControls.RadElement.OnBubbleEvent(RadElement sender, RoutedEventArgs args)
   at Telerik.WinControls.RadItem.OnBubbleEvent(RadElement sender, RoutedEventArgs args)
   at Telerik.WinControls.RadElement.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)
   at Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)
   at Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)
   at Telerik.WinControls.RadElement.DoMouseDown(MouseEventArgs e)
   at Telerik.WinControls.RadElement.CallDoMouseDown(MouseEventArgs e)
   at Telerik.WinControls.ComponentInputBehavior.OnMouseDown(MouseEventArgs e)
   at Telerik.WinControls.RadControl.OnMouseDown(MouseEventArgs e)
   at Telerik.WinControls.UI.RadCommandBar.OnMouseDown(MouseEventArgs e)
   at System.Windows.Forms.Control.WmMouseDown(Message& m, MouseButtons button, Int32 clicks)
   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.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Is there any way to set in command bar any control acceptable by command bar, like drop down list, anchored to the right side of the bar?

The command bar in the picture attached is stretched on the whole width of its parent control and is resizing with its parent control together.

Hi,

FindItem(string StartsWith) method of RadComboBox to return a RadComboBoxItem with text starting with a given string.

RadComboBoxItem item = radComboBox1.FindItem(strString);

What is the equivalent method in RadDropDownList to find item starting with a given string.

Any help is appreciated.

Thanks

(*I thought I posted this yesterday, but can't find it*)

I created a usercontrol that has a panel. I made the panel with rounded corners, just like the documentation. However. You can still see the square behind the rounded corners. I tried making them transparent, but no luck. See attached img. Suggestions on getting rid of the square in the back?


Thanks!