void LoadList()
{
List <MemberTypeInfo> memberTypeInfos = MemberTypeInfoBll.Select();
dgvList.AutoGenerateColumns = false;
dgvList.DataSource = memberTypeInfos;
}
void LoadType()
{
MemberTypeInfoBll memberTypeInfoBll = new MemberTypeInfoBll();
ddlType.DisplayMember = "MTitle";
ddlType.ValueMember = "MId";
ddlType.DataSource = memberTypeInfoBll.Select();
}