DATETIME PICKER CONTROL IN DATAGRIDVIEW

Imports System

Imports System.Windows.Forms

Public Class Griddatecontrol

    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 Not (value Is 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 = "d"

    End Sub

    Public Overrides Sub InitializeEditingControl(ByVal rowIndex As Integer, _

        ByVal initialFormattedValue As Object, _

        ByVal dataGridViewCellStyle As DataGridViewCellStyle)

        ' 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)

        If Not Me.Value Is DBNull.Value Then

            If Not Me.Value Is Nothing Then

                ctl.Value = CType(Me.Value, DateTime)

            End If

        End If

    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

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.Format = DateTimePickerFormat.Short

    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.ToShortDateString()

    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 False

        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