1. The RowValidating and RowValidated events do not fire when expected.
You have these events set to fire when the user changes rows. What happens when there is only one row in the grid? Expected behavior is to fire when the Row loses focus, which should happen when a user clicks anywhere outside the row, including whitespace or other controls on the form.

2. The data is saved before row validation is complete.
What is the point of having row-level validation if the values have already been saved to the databound object? Absolutely nothing should be saved until ALL validation is complete.

3. The user is locked down and unable to escape/cancel the edit if the row validation actually gets called and fails. 
This is extremely poor design. You cannot expect a user to be able to fix the issue every time. Sometimes they will need to start over, especially if there is a large amount of data. Instead, you lock them down and force them into making changes they may not want to commit to.

These problems have been around for years, but nobody has taken the time to address them despite promises. Even worse, the links to the Feature Requests in these threads no longer work and Telerik has changed their stance from admitting the problems to claiming that these are "desired behaviors" and "features". Stop calling these behaviors features, they are most certainly not.

http://www.telerik.com/forums/what-event-s-is-are-fired-when-the-pencil-icon-is-clicked

http://www.telerik.com/forums/radgridview---save-changes-to-a-rows-data-back-to-database

http://www.telerik.com/forums/cancel-row-edit

http://www.telerik.com/forums/in-rowvalidating-e-row-ismodified-doesnt-show-as-true-when-it-should

http://www.telerik.com/forums/radgridview-rowvalidating-event

http://www.telerik.com/forums/rowvalidating-not-firing

http://www.telerik.com/forums/rowvalidating-event-missing

http://www.telerik.com/forums/rowvalidating-problems

http://www.telerik.com/forums/esc-in-gridviewdatetimecolumn-inside-raddatagridview-after-i-did-an-e-cancel-true-in-row-validation

http://www.telerik.com/forums/how-to-validate-row-data

http://www.telerik.com/forums/rowchanged-question

http://www.telerik.com/forums/how-to-prevent-empty-rows-creation

Hi,
How can I add icons to Category panel in property grid.

Also, how to add icon to propertyentry element in Grid.  

[-]  [icon]   Appearance (category tab)
       [some icon_1]  Color             |   Red
       [some icon_2]  Orientation   |   Left
                                  Preview       |    [ Preview image]

Hello,

We have an application with SQL Server running in one location and then clients in different timezones using that data.  All datetimes are stored as UTC values.  For display we want them in local date/time.  How do we do that in GridView?

For example:
A grid showing a list of events with an updated_date column.  We want those event dates/times as local time.  Can .formatstring be used to somehow set ToLocalTime()?

Thanks,
Paul

hello to all
I downloaded  Telerik Ui for windows form trial
when i want to add new form I get the following error:

full error Text : 
Error occurred while running wizard.

System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.WinControls.VSX.TemplateProcessing.WFScenarioManager.Launch(IServiceProvider serviceProvider, String itemName, String scenarioPath, String scenarioName)
   at Telerik.WinControls.VSPackage.VSItemTemplateWizard.LaunchScenarioManager(ServiceProvider serviceProvider, Dictionary`2 replacementsDictionary)
   at Telerik.VSX.VSPackage.ItemTemplateWizardBase.RunStarted(Object automationObject, Dictionary`2 replacementsDictionary, WizardRunKind runKind, Object[] customParams)
   at Telerik.VSX.VSPackage.WizardBase.<>c__DisplayClass5.<Microsoft.VisualStudio.TemplateWizard.IWizard.RunStarted>b__4()
   at Telerik.VSX.VSPackage.WizardBase.CatchExceptionAndSendReport(Action action)

Hello,
As I can do to select cells, rows and columns, in the same way as in excel. I've only managed to select cells or entire rows
I have not found an example of how to do it
Thanks

My application is a scheduler for customers that use a normal US calendar with Sunday as the first day of the week. The RadScheduler displays this way but the printouts do not. When I print a weekly calendar, I get 2 pages, one with the previous week, with Sunday as the last day, and one for the current week with Monday as the first day. Is there a workaround for this?

Hi! sir:

I have three different time period,like this:


morning : 9:00~12:00

afternoom:13:00~17:00

night: 18:00~23:00

 
May  i  use the dropdownlist  chose the the time   period that i want and dynamic change the RulerStartScale and
dayView.RulerEndtScale  of dayview  (figure 1 show)    ? 

Another problem  is that may i display ,15 minutes. 30minutes.  45 minutes. like figure 2
show    ?
 
thanks a lot!~~


                            customer number:QD1612651

Hi,is it possible to display the buttons list only when the arrow part is clicked. Currently, the buttons list will be displayed when click on the main button. I need some thing like the normal drop down list. Thanks in advance. 

I have a situation where I'd like to provide the user with some common values to select for a column in a GridView, based on the value of another column that exists in the row. I know this can be done with the AutoComplete mode on the column. The problem is that I'd also like to allow them to add a new value that doesn't appear in the list if they want. Is there a way to allow the user to enter a custom value with the GridViewMultiComboBoxColumn or am I going about this all wrong?

Any pointers in the right direction would be greatly appreciated. Thanks!

Hello,
I am trying to figure out the INotifyPropertyChangd interface for using a Binding list with a grid. I CRUD my data to the database with code and display in the grid but I have to call a method to load the data into the grid every time I make a change. I am missing something to bind my data to the grid whenever a change is made. I created some small demo files and have looked at multiple examples but am still having problems figuring the link between the db and the grid. Below is what I have created to help understand the concept. One thing to note is that I am creating my data table using ORM fluent mapping in code.

​ //public class _Student
public class _Student : System.ComponentModel.INotifyPropertyChanged
{
private int id;
private string name;
private string grade;

public int Id
{
get { return id; }
set
{
id = value;
this.OnPropertyChanged("Id");
}
}

public string Name
{
get { return name; }
set
{
name = value;
this.OnPropertyChanged("Name");
}
}

public string Grade
{
get { return grade; }
set
{
grade = value;
this.OnPropertyChanged("Grade");
}
}

private void OnPropertyChanged(string PropertyName)
{
this.OnPropertyChanged(new PropertyChangedEventArgs(PropertyName));
}

protected virtual void OnPropertyChanged(PropertyChangedEventArgs args)
{
if (PropertyChanged != null)
{
PropertyChanged(this, args);
}
}

public event PropertyChangedEventHandler PropertyChanged;


//Mapping.
internal static MappingConfiguration<_Student> StudentMapping()
{
var config = new MappingConfiguration<_Student>();
config.MapType(x => new
{
Name = x.Name,
Grade = x.Grade,
}).ToTable("Student");
config.HasProperty(p => p.Id).IsIdentity(KeyGenerator.Autoinc);
config.HasProperty(p => p.Name).IsNotNullable().IsUnicode().HasLength(50);
config.HasProperty(p => p.Grade).IsNullable().IsUnicode().HasLength(50);
return config;
}
}

public class _vmstudent
{
//INSERT.
public static void InsertNewStudentInfo(BindingList<_Student> stud)
{
using (ProjectSpecSqlFluentContext db = new ProjectSpecSqlFluentContext())
{
foreach (var item in stud)
{
if (!db._Students.Any(x => x.Name.Equals(item.Name)))
{
_Student s = new _Student
{
Name = item.Name,
Grade = item.Grade
};
db.Add(s);
}
}
db.SaveChanges();
}
}

//UPDATE.
public static void UpdateStudentInfo(int Id, string BestGrade)
{
using (ProjectSpecSqlFluentContext db = new ProjectSpecSqlFluentContext())
{
if (db._Students.Any(x => x.Id.Equals(Id)))
{
_Student s = db._Students.Single(x => x.Id.Equals(Id));
s.Grade = BestGrade;
db.SaveChanges();
}
}
}

//READ.
public static BindingList<_Student> ReadStudentInfo()
{
BindingList<_Student> list;
using (ProjectSpecSqlFluentContext db = new ProjectSpecSqlFluentContext())
{
var result = (from s in db._Students
select new _Student
{
Id = s.Id,
Name = s.Name,
Grade = s.Grade
}).ToList();
list = new BindingList<_Student>(result);
}
return list;
}

//DELETE.
public static void DeleteStudentInfo(int Id)
{
using (ProjectSpecSqlFluentContext db = new ProjectSpecSqlFluentContext())
{
if (db._Students.Any(x => x.Id.Equals(Id)))
{
_Student s = db._Students.FirstOrDefault(x => x.Id.Equals(Id));
db.Delete(s);
db.SaveChanges();
}
}
}
}


public partial class StudentForm : Telerik.WinControls.UI.RadForm
{
private BindingList<_Student> student;

public StudentForm()
{
InitializeComponent();

////Default schema.
//vmSchema.AddDefaultTableInfo();

this.radGridView1.DataSource = _vmstudent.ReadStudentInfo();

this.rbtnAdd.Click += rbtnAdd_Click;
this.rbtnDelete.Click += rbtnDelete_Click;
this.rbtnBestGrade.Click += rbtnBestGrade_Click;
}

//ADD...
void rbtnAdd_Click(object sender, EventArgs e)
{
student = new BindingList<_Student>();
student.Add(new _Student { Id = 0, Name = "Peter", Grade = "A" });
student.Add(new _Student { Id = 0, Name = "John", Grade = "B" });
student.Add(new _Student { Id = 0, Name = "Tony", Grade = "C" });
student.Add(new _Student { Id = 0, Name = "David", Grade = "D" });

_vmstudent.InsertNewStudentInfo(student);
this.radGridView1.DataSource = _vmstudent.ReadStudentInfo();
}


//BEST GRADE...
void rbtnBestGrade_Click(object sender, EventArgs e)
{
int index = this.radGridView1.Rows.IndexOf(radGridView1.CurrentRow);
string id = this.radGridView1.Rows[index].Cells["Id"].Value.ToString();

_vmstudent.UpdateStudentInfo(Convert.ToInt16(id), txtBestGrade.Text);
this.radGridView1.DataSource = _vmstudent.ReadStudentInfo();
}

//DELETE..
void rbtnDelete_Click(object sender, EventArgs e)
{
int index = this.radGridView1.Rows.IndexOf(radGridView1.CurrentRow);
string id = this.radGridView1.Rows[index].Cells["Id"].Value.ToString();

_vmstudent.DeleteStudentInfo(Convert.ToInt16(id));
this.radGridView1.DataSource = _vmstudent.ReadStudentInfo();
}
}

Your help would be appreciated.

Thanks

Gavin