RadMaskEditBox - does not work correctly when the whole text is selected and user presses key "Enter". Control removes the last character. Workaround: Public Class Form1 Dim text1 As String Dim text2 As String Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown If e.KeyData = Keys.Enter Then SendKeys.Send("{TAB}") End If End Sub Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Me.RadMaskedEditBox1.MaskType = Telerik.WinControls.UI.MaskType.Standard Me.RadMaskedEditBox2.MaskType = Telerik.WinControls.UI.MaskType.Standard Me.RadMaskedEditBox1.Mask = "00/00/00" Me.RadMaskedEditBox1.Text = "__/__/__" Me.RadMaskedEditBox2.Mask = "00/00/00" Me.RadMaskedEditBox2.Text = "__/__/__" End Sub Private Sub RadMaskedEditBox1_GotFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadMaskedEditBox1.GotFocus RadMaskedEditBox1.SelectAll() text1 = Me.RadMaskedEditBox1.Text End Sub Private Sub RadMaskedEditBox1_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadMaskedEditBox1.LostFocus Me.RadMaskedEditBox1.Text = text1 End Sub Private Sub RadMaskedEditBox1_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles RadMaskedEditBox1.KeyDown If e.KeyData = Keys.Enter Then text1 = Me.RadMaskedEditBox1.Text End If End Sub Private Sub RadMaskedEditBox2_GotFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadMaskedEditBox2.GotFocus RadMaskedEditBox2.SelectAll() text2 = Me.RadMaskedEditBox2.Text End Sub Private Sub RadMaskedEditBox2_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadMaskedEditBox2.LostFocus Me.RadMaskedEditBox2.Text = text2 End Sub Private Sub RadMaskedEditBox2_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles RadMaskedEditBox2.KeyDown If e.KeyData = Keys.Enter Then text2 = Me.RadMaskedEditBox2.Text End If End Sub End Class