Insert just time in MySql column

[gate7cy]

I am developing a portion of an application that deals with settings reminders and alarms for personal notes. I am trying to insert from a formatted datetimepicker( formatted to show time only ) the time a user wants to get a reminder of something he/she wants. The column in the MySql database is of type 'Time'. I was never succesfull in entering and saving the data. Either I was getting validation problems not allowing me to exit the datetimepicker after I choose the time. To resolve this issues I just made 'false' the option 'causes validation'. Now the problem is that the time is not inserted getting problems saying that :

Specified cast is not valid.Couldn't store <01/01/1753 00:00:00> in ntime Column. Expected type is TimeSpan.

here is the code for saving

  Dim xtime As DateTime = New DateTime
        xtime = Me.NtimeDateTimePicker.Value
        Dim result As DialogResult
        result = MessageBox.Show("Proceed with saving?", "LandWorx", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question)
        If result = Windows.Forms.DialogResult.Yes Then

            Me.UsernotesBindingSource.EndEdit()
            Me.UsernotesTableAdapter.Update(Vrahdb.usernotes)
     
            For Each _control As Control In TabControl1.Controls()
                For Each _control1 As Control In _control.Controls()
                    _control1.Enabled = False
                Next
            Next
        ElseIf result = Windows.Forms.DialogResult.No Then
            Me.Close()
        ElseIf result = Windows.Forms.DialogResult.Cancel Then
            For Each _control As Control In TabControl1.Controls()
                For Each _control1 As Control In _control.Controls()
                    _control1.Enabled = False
                Next
            Next
        End If
        Me.Vrahdb.usernotes.Clear()
        Me.UsernotesTableAdapter.Fill(Vrahdb.usernotes)
        Me.UsernotesBindingSource.MoveLast()
        Dim pos As Integer = Me.UsernotesBindingSource.Position
        Vrahdb.usernotes.Rows(pos).Item("ntime") = xtime
        Me.UsernotesTableAdapter.Update(Vrahdb.usernotes)

I have tried declaring as timespan with this code replacing the first two lines of the above code

Dim xtime As TimeSpan = New TimeSpan
xtime = Me.NtimeDateTimePicker.Value.TimeOfDay

This time it does not even insert a new row it just updates the last entry I have changing its time. This is strange as this happens only when I use the above two lines.

Thanks for all the replies.

cheers