public bool Delete(TableName tableName, string strKey, ref string error)
{
string strTableName = tableName.ToString();
string key = "";
switch (tableName)
{
case TableName.SinhVien: key = "MSSV"; break;
case TableName.NhanVien: key = "MaNV"; break;
case TableName.HoaDon: key = "MaHD"; break;
case TableName.PhieuDK: key = "MaPDK"; break;
case TableName.LoaiPhong: key = "MaLoaiPhong"; break;
case TableName.DichVu: key = "MaDV"; break;
case TableName.SDDV: key = "MaHD"; break;
case TableName.Stay: key = "MSSV"; break;
}
string sql = $"DELETE FROM {strTableName} WHERE {key} = @Key";
SqlParameter[] sqlParameters = new SqlParameter[]
{
new SqlParameter("Key", strKey)
};
return(db.ExecuteNonQuery(sql, sqlParameters, CommandType.Text, ref error));
}