public: virtual void InitializeEditingControl(int rowIndex, Object^ initialFormattedValue, DataGridViewCellStyle^ dataGridViewCellStyle) override
{
__super::InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);
ListViewEditingControl^ ctl = dynamic_cast<ListViewEditingControl^>(DataGridView->EditingControl);
this->ValueType=ListView::typeid;
}

public: virtual property Object^ EditingControlFormattedValue
{
Object^ get()
{
return this->Value.?????????????????
}
void set(Object^ value)
{
this->Value = ??????????????????
}
}