如何使用C#读取包含多行的单元格的CSV文件

时间:2014-11-07 19:30:23

标签: c# csv

我正在尝试读取包含多行内容的CSV文件。

这就是CSV的样子:
enter image description here

第1行,列'详情'有多行。

当我尝试使用ReadLine()方法阅读时:

private void buttonBrowse_Click(object sender, EventArgs e)
        {
            openFileDialog.Filter = "Excel Worksheets|*.csv";
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                String filePathAndName = openFileDialog.FileName;
                StreamReader reader = new StreamReader(filePathAndName);
                String line = reader.ReadLine();
                Console.WriteLine(line);
                do
                {
                     line = reader.ReadLine();
                     Console.WriteLine(line);
                } while (line != null);
            }
        }

它将具有多行的单元格拆分为行数:

[1]"Time of Day","Process Name","PID","Operation","Path","Result","Detail","Image Path"
[2]"22:52:24.2905182","notepad.exe","4828","Process Start","","SUCCESS","Parent PID: 2484, Command line: ""C:\Windows\system32\notepad.exe"" , Current directory: C:\Users\User\, Environment: 
[3];    =::=::\
[4];    ALLUSERSPROFILE=C:\ProgramData
[5];    APPDATA=C:\Users\User\AppData\Roaming
[6];    asl.log=Destination=file
[7];    CommonProgramFiles=C:\Program Files\Common Files
...

"22:52:24.2905201","notepad.exe","4828","Thread Create","","SUCCESS","Thread ID: 8008","C:\Windows\system32\notepad.exe"
"22:52:24.2915842","notepad.exe","4828","Load Image","C:\Windows\System32\notepad.exe","SUCCESS","Image Base: 0x6f0000, Image Size: 0x30000","C:\Windows\system32\notepad.exe"

在上面的日志中,第2-7行应该是一行。

我想像PowerShell一样使用import-csv函数很好地阅读它:
enter image description here

您可以使用命令(示例)轻松地通过行和列从特定单元格中提取数据:

$csvContent[0] |select -expand Detail

例:
enter image description here

3 个答案:

答案 0 :(得分:4)

您可以使用像CsvHelper这样的库,而不是手动读取行,这将解除解析csv带来的许多麻烦。

答案 1 :(得分:1)

我知道这不是一个很好的方法,但它适用于我的情况:

lineCounter = 0;
while (!reader.EndOfStream)
{
     var line = reader.ReadLine();
     var values = line.Split(',');

     if(values.Length == 1)
     {
        list4[lineCounter-1] += values[0];
     }
     else
     {
          list1.Add(values[0]);
          list2.Add(values[1]);
          list3.Add(values[2]);
          list4.Add(values[3]);
          lineCounter++;
     }

}

答案 2 :(得分:0)

使用

  

Microsoft.VisualBasic.FileIO.TextFieldParser

this answer中查看详细信息。