/// <summary>
/// 担当者情報の編集
/// </summary>
/// <param name="staff">担当者情報</param>
public void EditStaff(Staff staff)
{
int index = Staffs.IndexOf(SelectedStaff);
if (index > -1)
{
Staffs.RemoveAt(index);
Staffs.Insert(index, staff);
}
}