In a DataGridView if we have to create a DateTimePickerCell, then we have to host that control in GridView as there are no inbuilt cells like ComboBoxCell or LinkCell in this control
Public Class CalendarColumn Inherits DataGridViewColumn Public Sub New() MyBase.New(New CalendarCell()) End Sub Public Overrides Property CellTemplate() As DataGridViewCell Get Return MyBase.CellTemplate End Get Set(ByVal value As DataGridViewCell) ' Ensure that the cell used for the template is a CalendarCell. If (value IsNot Nothing) AndAlso _ Not value.GetType().IsAssignableFrom(GetType(CalendarCell)) _ Then Throw New InvalidCastException("Must be a CalendarCell") End If MyBase.CellTemplate = value End Set End Property End Class Public Class CalendarCell Inherits DataGridViewTextBoxCell Public Sub New() ' Use the short date format. Me.Style.Format = "M/d/yyyy" End Sub Public Overrides Sub InitializeEditingControl(ByVal rowIndex As Integer, _ ByVal initialFormattedValue As Object, _ ByVal dataGridViewCellStyle As DataGridViewCellStyle) Try ' Set the value of the editing control to the current cell value. MyBase.InitializeEditingControl(rowIndex, initialFormattedValue, _ dataGridViewCellStyle) Dim ctl As CalendarEditingControl = _ CType(DataGridView.EditingControl, CalendarEditingControl) ctl.Value = CDate(Me.Value).Date Catch ex As Exception End Try End Sub Public Overrides ReadOnly Property EditType() As Type Get ' Return the type of the editing contol that CalendarCell uses. Return GetType(CalendarEditingControl) End Get End Property Public Overrides ReadOnly Property ValueType() As Type Get ' Return the type of the value that CalendarCell contains. Return GetType(DateTime) End Get End Property Public Overrides ReadOnly Property DefaultNewRowValue() As Object Get ' Use the current date and time as the default value. Return DateTime.Now.Date End Get End Property End Class Class CalendarEditingControl Inherits DateTimePicker Implements IDataGridViewEditingControl Private dataGridViewControl As DataGridView Private valueIsChanged As Boolean = False Private rowIndexNum As Integer Public Sub New() Me.CustomFormat = "M/d/yyyy" Me.Format = DateTimePickerFormat.Custom End Sub Public Property EditingControlFormattedValue() As Object _ Implements IDataGridViewEditingControl.EditingControlFormattedValue Get Return Me.Value.ToShortDateString End Get Set(ByVal value As Object) If TypeOf value Is String Then Me.Value = DateTime.Parse(CStr(value)) End If End Set End Property Public Function GetEditingControlFormattedValue(ByVal context _ As DataGridViewDataErrorContexts) As Object _ Implements IDataGridViewEditingControl.GetEditingControlFormattedValue Return Me.Value.ToString End Function Public Sub ApplyCellStyleToEditingControl(ByVal dataGridViewCellStyle As _ DataGridViewCellStyle) _ Implements IDataGridViewEditingControl.ApplyCellStyleToEditingControl Me.Font = dataGridViewCellStyle.Font Me.CalendarForeColor = dataGridViewCellStyle.ForeColor Me.CalendarMonthBackground = dataGridViewCellStyle.BackColor End Sub Public Property EditingControlRowIndex() As Integer _ Implements IDataGridViewEditingControl.EditingControlRowIndex Get Return rowIndexNum End Get Set(ByVal value As Integer) rowIndexNum = value End Set End Property Public Function EditingControlWantsInputKey(ByVal key As Keys, _ ByVal dataGridViewWantsInputKey As Boolean) As Boolean _ Implements IDataGridViewEditingControl.EditingControlWantsInputKey ' Let the DateTimePicker handle the keys listed. Select Case key And Keys.KeyCode Case Keys.Left, Keys.Up, Keys.Down, Keys.Right, _ Keys.Home, Keys.End, Keys.PageDown, Keys.PageUp Return True Case Else Return Not dataGridViewWantsInputKey End Select End Function Public Sub PrepareEditingControlForEdit(ByVal selectAll As Boolean) _ Implements IDataGridViewEditingControl.PrepareEditingControlForEdit ' No preparation needs to be done. End Sub Public ReadOnly Property RepositionEditingControlOnValueChange() _ As Boolean Implements _ IDataGridViewEditingControl.RepositionEditingControlOnValueChange Get Return False End Get End Property Public Property EditingControlDataGridView() As DataGridView _ Implements IDataGridViewEditingControl.EditingControlDataGridView Get Return dataGridViewControl End Get Set(ByVal value As DataGridView) dataGridViewControl = value End Set End Property Public Property EditingControlValueChanged() As Boolean _ Implements IDataGridViewEditingControl.EditingControlValueChanged Get Return valueIsChanged End Get Set(ByVal value As Boolean) valueIsChanged = value End Set End Property Public ReadOnly Property EditingControlCursor() As Cursor _ Implements IDataGridViewEditingControl.EditingPanelCursor Get Return MyBase.Cursor End Get End Property Protected Overrides Sub OnValueChanged(ByVal eventargs As EventArgs) ' Notify the DataGridView that the contents of the cell have changed. valueIsChanged = True Me.EditingControlDataGridView.NotifyCurrentCellDirty(True) MyBase.OnValueChanged(eventargs) End Sub End Class