Question

使用streamreader，如果行以'0'开头，则跳过行???

string FileToProcess = System.IO.File.ReadAllText(@"up.FolderPath");
using (StreamReader sr = new StreamReader(FileToProcess))
{
    while (!sr.EndOfStream)
    {
        string line = sr.ReadLine();
        if (line.StartsWith("0"))
        {
            line.Skip();
            // ????have to put a number line in here
            // But i just want to skip the line it is on
        }
    }
}

Answer 1

您可以通过不对其进行任何操作来跳过一行。最快的方法是使用continue; ...

while (!sr.EndOfStream)
{
    string line = sr.ReadLine();
    if (line.StartsWith("0"))
    {
        continue;
    }
    //process line logic
}

使用continue将有效地再次跳转到while循环的开头，然后继续阅读下一行，

这是基于我的理解，您希望跳过以"0"

开头的行

Answer 2

string FileToProcess = System.IO.File.ReadAllText(@"up.FolderPath");
      using (StreamReader sr = new StreamReader(FileToProcess))
      {
          while (!sr.EndOfStream)
          {
                string line = sr.ReadLine();
                if (line.StartsWith("0"))
                {
                      continue;
                }
                else{
                      //Do stuff here
                }
          }
     }

Answer 3

仅当行不以'0'

开头时才对该行执行某些操作

如何跳过流阅读器内的一行？

3 个答案: