C datagrid cellvalidating

I have a windows form application which contains a datgridview.I need to enforce cell validations on the datagridview cells so that it does not accept negative values.This is a bit late for the original poster, but here what solved it for me... One more reason the error icon is not showing is, if the row header size is too small. If for some reason you set the row header to a smaller size, such as 30, the error icon will not display. Try setting it a bit higher to see if thats the problem.With row-level validation, you validate entire data objects when a user commits changes to a row. Component Model Public Class Main Window Private Sub data Grid1_Initializing New Item(By Val sender As System. You can also provide customized visual feedback for validation errors, or use the default visual feedback that the Data Grid control provides.

End Date End Sub Public Sub End Edit() Implements IEditable Object. Add(New Course With ) End Sub End Class Public Class Course Implements IEditable Object, INotify Property Changed Private _name As String Public Property Name As String Get Return _name End Get Set(By Val value As String) If _name = value Then Return _name = value On Property Changed("Name") End Set End Property Private _number As Integer Public Property Id As Integer Get Return _number End Get Set(By Val value As Integer) If _number = value Then Return _number = value On Property Changed("Id") End Set End Property Private _start Date As Date Time Public Property Start Date As Date Time Get Return _start Date End Get Set(By Val value As Date Time) If _start Date = value Then Return _start Date = value On Property Changed("Start Date") End Set End Property Private _end Date As Date Time Public Property End Date As Date Time Get Return _end Date End Get Set(By Val value As Date Time) If _end Date = value Then Return _end Date = value On Property Changed("End Date") End Set End Property #Region "IEditable Object" Private backup Copy As Course Private in Edit As Boolean Public Sub Begin Edit() Implements IEditable Object. Property Changed Private Sub On Property Changed(By Val property Name As String) Raise Event Property Changed(Me, _ New Property Changed Event Args(property Name)) End Sub #End Region End Class Public Class Course Validation Rule Inherits Validation Rule Public Overrides Function Validate(By Val value As Object, _ By Val culture Info As System. Culture Info) _ As Validation Result Dim course As Course = _ CType(CType(value, Binding Group). Can anyone show me how to get my array displayed in a datagrid or even a text file. My array below: string[,] Hrs Worked Table = new string[qry.Total Rows, 24]; /* sample project is available //GOOD SITE File/mahesh/Array List Binding10212005102338AM/Array List Article.aspx?

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