如何在Datagridview里面加Calendar控件

datagridviewl里面可以添加的列有6种，没有日期型的，于是我查找了些资料，找到个添加日期控件的方法。首先建立三个类：CalendarEditingControl，CalendarColumn，CalendarCell继承已有的类，具体代码如下：

class CalendarEditingControl : DateTimePicker,IDataGridViewEditingControl
{
DataGridView dataGridView;
private bool valueChanged = false;
int rowIndex;

public CalendarEditingControl()
{
this.Format = DateTimePickerFormat.Short;
}

public object EditingControlFormattedValue
{
get
{
return this.Value.ToShortDateString();
}
set
{
if (value is String)
{
this.Value = DateTime.Parse((String)value);
}
}
}

public object GetEditingControlFormattedValue(DataGridViewDataErrorContexts context)
{
return EditingControlFormattedValue;
}

public void ApplyCellStyleToEditingControl( DataGridViewCellStyle dataGridViewCellStyle)
{
this.Font = dataGridViewCellStyle.Font;
this.CalendarForeColor = dataGridViewCellStyle.ForeColor;
this.CalendarMonthBackground = dataGridViewCellStyle.BackColor;
}

public int EditingControlRowIndex
{
get
{
return rowIndex;
}
set
{
rowIndex = value;
}
}

public bool EditingControlWantsInputKey(Keys key, bool dataGridViewWantsInputKey)
{
switch (key & Keys.KeyCode)
{
case Keys.Left:
case Keys.Up:
case Keys.Down:
case Keys.Right:
case Keys.Home:
case Keys.End:
case Keys.PageDown:
case Keys.PageUp:
return true;
default:
return false;
}
}

public void PrepareEditingControlForEdit(bool selectAll)
{
// No preparation needs to be done.
}

public bool RepositionEditingControlOnValueChange
{
get
{
return false;
}
}

public DataGridView EditingControlDataGridView
{
get
{
return dataGridView;
}
set
{
dataGridView = value;
}
}

public bool EditingControlValueChanged
{
get
{
return valueChanged;
}
set
{
valueChanged = value;
}
}

public Cursor EditingPanelCursor
{
get
{
return base.Cursor;
}
}

protected override void OnValueChanged(EventArgs eventargs)
{
valueChanged = true;
this.EditingControlDataGridView.NotifyCurrentCellDirty(true);
base.OnValueChanged(eventargs);
}

}

第二个类：

public class CalendarColumn : DataGridViewColumn
{
public CalendarColumn() : base(new CalendarCell())
{
}

public override DataGridViewCell CellTemplate
{
get
{
return base.CellTemplate;
}
set
{
if (value != null && !value.GetType().IsAssignableFrom(typeof(CalendarCell)))
{
throw new InvalidCastException("Must be a CalendarCell");
}
base.CellTemplate = value;
}
}

}

第三个类：

public class CalendarCell : DataGridViewTextBoxCell
{
public CalendarCell() : base()
{
this.Style.Format = "d";
}

public override void InitializeEditingControl(int rowIndex, object initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
{
base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);
CalendarEditingControl ctl = DataGridView.EditingControl as CalendarEditingControl;
ctl.Value = (DateTime)this.Value;
}

public override Type EditType
{
get
{
return typeof(CalendarEditingControl);
}
}

public override Type ValueType
{
get
{
return typeof(DateTime);
}
}

public override object DefaultNewRowValue
{
get
{
return DateTime.Now;
}
}

}

建立后就可以用 CalendarColumn直接声明日期列的对象了，进而可以添加到datagridview里面。