public DGV_ComboBoxCell()
: base()
{
_al = null;
_displayMember = string.Empty;
_valueMember = string.Empty;
_editingComboBox = null;
_ddMaxItems = 0;
_ddWidth = 0;
}
public override void InitializeEditingControl(int rowIndex, object
initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
{
// Set the value of the editing control to the current cell value.
base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);
DGV_ComboBoxEditingControl ctl = DataGridView.EditingControl as DGV_ComboBoxEditingControl;
if (ctl != null)
{
ctl.SelectedIndexChanged -= new EventHandler(DoSelectedIndexChanged);
ctl.DataSource = null;
//ctl.Items.Clear();
ctl.DropDownStyle = ComboBoxStyle.DropDown;
if (_ddMaxItems > 0)
ctl.MaxDropDownItems = _ddMaxItems;
if (_ddWidth > 0)
ctl.DropDownWidth = _ddWidth;
ctl.DataSource = _al;
if (ctl.Items.Count > 0)
{
ctl.DisplayMember = _displayMember;
ctl.ValueMember = _valueMember;
}
ctl.pFindByLettersStart = FindByLettersStart;
ctl.pFindByLettersLength = FindByLettersLength;
ctl.pIsCaseSensitive = FindIsCaseSensitive;
string s = initialFormattedValue as string;
if (s == null)
s = string.Empty;
ctl.Text = s;
_editingComboBox = ctl;
_editingComboBox.EditingControlRowIndex = rowIndex;
_editingComboBox.SelectedIndexChanged += new EventHandler(DoSelectedIndexChanged);
}
}
public override void DetachEditingControl()
{
ComboBox cbo = this.DataGridView.EditingControl as ComboBox;
if (cbo != null && cbo.Text.Length > 0)
{
bool flg = true;
foreach (object oi in cbo.Items)
{
string si = oi as string;
if (si != null && si.Equals(cbo.Text))
{
flg = false;
break;
}
}
if (flg && _templateComboBoxColumn != null)
{
_templateComboBoxColumn.OnEnterNewText(cbo.Text);
}
}
if(cbo != null)
cbo.SelectedIndexChanged -= new EventHandler(DoSelectedIndexChanged);
_editingComboBox = null;
base.DetachEditingControl();
}