stringbuilder 附加带有变量的文本

Question

我有这一行，如何附加带有变量的文本来组成标题？

  StringBuilder sb = new StringBuilder();
  week6 = model.SelectedSunday.AddDays(-7);
  week5 = week6.AddDays(-7);
  week4 = week5.AddDays(-7);
  week3 = week4.AddDays(-7);
  week2 = week3.AddDays(-7);
  week1 = week2.AddDays(-7);
  sb.AppendLine("Title, Total, " week6, week5, week4, week3, week2, week1 );

还有这段代码：

 var tradesmenReportData = _reportingService.GetTradeUKKPITradesmen(model.SelectedSunday);
  var jobSortedReportData = _reportingService.GetTradeUKKPIJobSorted(model.SelectedSunday);
  foreach (var item in tradesmenReportData)
  {
    sb.AppendLine(String.Concat("\"", item.Title, "\", item.Total, "\", item.Week6, "\", ", item.Week5, "\", ", item.Week4, "\", ", item.Week3, "\", ", item.Week2, "\", ", item.Week1));

  }

在输出文件（excel）中，值后面附加了一个“？在上面一行的某个地方有一个额外的”。我哪里出错了？

谢谢

Answer 1

您可以使用StringBuilder.AppendFormat：

sb.AppendFormat("Title, Total, {0}, {1}, {2}, {3}, {4}, {5}"
               , week6, week5, week4, week3, week2, week1);

将通过处理复合格式字符串（包含零个或多个格式项）返回的字符串附加到此实例。每个格式项都替换为参数数组中相应参数的字符串表示形式。