In RadGridView, the user can set the string to search.

How to determine that RadGridView is searching? Is it possible to programmatically interrupt the search process?

If there are many rows in the table, the search can take quite a long time. If the user does not wait for the end of the search and closes the form with the RadGridView, an error occurs.

************** Текст исключения **************
System.ObjectDisposedException: Доступ к ликвидированному объекту невозможен.
Имя объекта: "RadGridView".
в System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous)
в System.Windows.Forms.Control.Invoke(Delegate method, Object[] args)
в Telerik.WinControls.UI.GridSearchCellElement.searchRow_SearchProgressChanged(Object sender, SearchProgressChangedEventArgs e)
в Telerik.WinControls.UI.GridViewSearchRowInfo.OnSearchProgressChanged(SearchProgressChangedEventArgs e)
в Telerik.WinControls.UI.GridViewSearchRowInfo.ReportSearchProgress(Int32 percent, GridSearchResultCellInfo resultCell, GridSearchResultCellCollection resultCells)
в Telerik.WinControls.UI.GridViewSearchRowInfo.TraverseRows(DoWorkEventArgs e)

I use RadSpreadSheet to view xlsx stored in the database (so they need to be protected from editing). But for some worksheet, this leads to the following error:

System.ArgumentException: algorithmName
в Telerik.Windows.Documents.Utilities.Guard.ThrowExceptionIfNullOrEmpty(String param, String paramName)
в Telerik.Windows.Documents.Common.Model.Protection.ProtectionHelperBase.GenerateHashBase64(String password, String salt, String algorithmName, Int32 spinCount)
в Telerik.Windows.Documents.Spreadsheet.Model.Protection.ProtectionData.EnforceProtection(String input)
в Telerik.Windows.Documents.Spreadsheet.Model.Sheet.ProtectSheet(String password)

I cannot submit the file, as it contains confidential information. Perhaps the reason is that the worksheet contains links to other files that are not on this computer.

Here's a line from my program that causes an error:

tem.Protect("abc", WorksheetProtectionOptions.Default);

Hi, 

I'm trying to create a ribbon menu without the backstage menu (an quickaccess, and titlebar).

By setting visibility to collabsed, I can remove all I want to remove, which is great. However, even though I have hidden the backstage menu, there is still room in the UI for it, so that the first ribbon tab is drawn as if it is there. I would like for the ribbon tabs to start on the left, as if the backstage menu was never there.

How do I achieve this?

Please see the screenshot for visual clue.

Regards

Thomas

When you have a Spreadsheet  and there are n sheets on its workbook, I'd like to either get the Index of the Worksheet that is being Removed (or is Removed) or the Sheet itself when it is being removed (but when it is already removed before then I won't be able to use it to retrieve the index)

Is that possible?

The nearest event I saw was the Context Changed event of the Workbook element, but I couldn't figure it out.

I have the following

class LookupItem

{

     public Guid Id {get;set;}

     public string Description {get;set;}

}

class SomeOtherClass

{

  public int Key {get;set;}

  public Guid LookupItemId {get;set;}

  public string SomeProperty {get;set;}

}

Now.

The LookupItem class will be a part of a collection (or lookup list) e.g. List<LookupItem>

The SomeOtherClass is the selectedObject of the propertygrid

I have looked through the samples such as https://docs.telerik.com/devtools/winforms/knowledge-base/propertygrid-dropdown-editor

and whilst I can get the combobox or RadMultiColumnComboBox to display when editing, I need to be able to show the description value of the selected lookupitem in the propertygrid item. Currently its displaying the LookupItem.Id which is a Guid.

Any ideas? The simplest will suffice

I'm following the example of "https://docs.telerik.com/devtools/winforms/controls/gridview/editors/data-validation" to do some data validation and I'm expecting it to show an error message when the user inputs a non-validated string in the cell, like it's shown in the telerik docs, however even though I can see with the debugger that the .ErrorText property is set, a message is not shown (but e.Cancel works and the focus remains on the problematic cell)

I could call a msgbox() to show the message, but I feel that negates the purpose of setting the .ErrorText property. What am I doing wrong?

Information on the Code block:

AbsenceString = "U". SicknessString = "K". gvTimesheet's ShowCellErrors is set to TRUE on the Designer.

how can i align the menu item on the right?
i have inserted a menu item with properties stretch horizontallyl  = true.
all other with stretch horizontallyl  = false

thanks 

andré