C#引用参数用法
本文关键字:用法 参数 引用 | 更新日期: 2023-09-27 17:59:22
我使用引用参数来返回多个信息。比如
int totalTransaction = 0;
int outTransaction = 0;
int totalRecord = 0;
var record = reports.GetTransactionReport(searchModel, out totalTransaction, out outTransaction, out totalRecord);
//方法是这样的,
public List<TransactionReportModel> GetAllTransaction(
TransactionSearchModel searchModel,
out totalTransaction,
out totalTransaction,
out totalRecord) {
IQueryable<TransactionReportModel> result;
// search
return result.ToList();
}
但我不喜欢长参数,所以我试图用Dictionary用单个参数来清理它。
Dictionary<string, int> totalInfos = new Dictionary<string, int>
{
{ "totalTransaction", 0 },
{ "outTransaction", 0 },
{ "totalRecord", 0 }
};
var record = reports.GetTransactionReport(searchModel, out totalInfos);
但仍然不够好,因为没有承诺关键字符串,这就像硬录音一样。
密钥需要使用Constant吗?或者有更好的解决方案吗?
只需使用一个类。并完全避免out
参数:
class TransactionResult
{
public List<TransactionReportModel> Items { get; set; }
public int TotalTransaction { get; set; }
public int OutTransaction { get; set; }
public int TotalRecord { get; set; }
}
public TransactionResult GetAllTransaction(TransactionSearchModel searchModel)
{
IQueryable<TransactionReportModel> result;
// search
return new TransactionResult
{
Items = result.ToList(),
TotalTransaction = ...,
OutTransaction = ...,
TotalRecord = ...
};
}