C#检查sql语法正确性

public bool ValidateSQL(string sql)
{
bool bResult;

SqlCommand cmd = _conn.CreateCommand();
cmd.CommandText = "SET PARSEONLY ON";
cmd.ExecuteNonQuery();
try
{
cmd.CommandText = sql;
cmd.ExecuteNonQuery();
bResult = true;
}
catch (Exception ex)
{
bResult = false;
}
finally
{
cmd.CommandText = "SET PARSEONLY OFF";
cmd.ExecuteNonQuery();
}

return bResult;
}