我有一个类的公共属性,我的输出详细信息行是这样写的:
public static long OutputListToFile(StreamWriter writer, List<DocMetaData> listData)
{
StringBuilder md = new StringBuilder();
int rowcount = 0;
foreach (var c in listData)
{
md.Append(c.Section); md.Append(DocMetaData.SEPARATOR);
md.Append(c.DocClass); md.Append(DocMetaData.SEPARATOR);
md.Append(c.Meeting); md.Append(DocMetaData.SEPARATOR);
md.Append(c.Agency); md.Append(DocMetaData.SEPARATOR);
md.Append(c.Country); md.Append(DocMetaData.SEPARATOR);
md.Append(c.Comment); md.Append(DocMetaData.SEPARATOR);
md.Append(c.Title); md.Append(DocMetaData.SEPARATOR);
md.Append(c.Folder); md.Append(DocMetaData.SEPARATOR);
md.Append(c.File); md.Append(DocMetaData.CARRIAGE_RETURN);
try
{
writer.WriteLine(md.ToString());
rowcount++;
}
catch (Exception ex)
{
log.Fatal("Error in OutputListToFile:\r\n", ex);
}
}
return rowcount;
}
md.Append 语句当前必须按上述确切顺序放置,以便与编写第一行的例程匹配:
private void OutputColumnNamesAsFirstLine(StreamWriter writer)
{
StringBuilder md = new StringBuilder();
PropertyInfo[] columns;
columns = typeof(DocMetaData).GetProperties(BindingFlags.Public |
BindingFlags.Instance);
int i = 0;
foreach (var columnName in columns)
{
i++;
md.Append(columnName.Name); md.Append(DocMetaData.SEPARATOR);
}
writer.WriteLine(md.ToString());
}
有没有办法可以重写 OutputListToFile 中的 foreach 循环,这样我就可以消除这种排序依赖性。这是 DocMetaData 类的片段:
public class DocMetaData
{
public const string SEPARATOR = "\t"; // horizontal tab is delimiter
public const string CARRIAGE_RETURN = "\r";
public string Section { get; set; }
public string DocClass { get; set; }
public string Meeting { get; set; }
public string Agency { get; set; }
public string Country { get; set; }
public string Comment { get; set; }
public string Title { get; set; }
public string Folder { get; set; }
public string File { get; set; }