Question

"0.0.0.0,""0.255.255.255"",""ZZ"""                
"1.0.0.0,""1.0.0.255"",""AU"""
"1.0.1.0,""1.0.3.255"",""CN"""
"1.0.4.0,""1.0.7.255"",""AU"""
"1.0.8.0,""1.0.15.255"",""CN"""
"1.0.16.0,""1.0.31.255"",""JP"""
"1.0.32.0,""1.0.63.255"",""CN"""
"1.0.64.0,""1.0.127.255"",""JP"""
"1.0.128.0,""1.0.255.255"",""TH"""
"1.1.0.0,""1.1.0.255"",""CN"""
"1.1.1.0,""1.1.1.255"",""AU"""
"1.1.2.0,""1.1.63.255"",""CN"""
"1.1.64.0,""1.1.127.255"",""JP"""
"1.1.128.0,""1.1.255.255"",""TH"""

İNEXCEL

0.0.0.0,"0.255.255.255","ZZ"
1.0.0.0,"1.0.0.255","AU"
1.0.1.0,"1.0.3.255","CN"
1.0.4.0,"1.0.7.255","AU"
1.0.8.0,"1.0.15.255","CN"
1.0.16.0,"1.0.31.255","JP"
1.0.32.0,"1.0.63.255","CN"
1.0.64.0,"1.0.127.255","JP"
1.0.128.0,"1.0.255.255","TH"
1.1.0.0,"1.1.0.255","CN"
1.1.1.0,"1.1.1.255","AU"
1.1.2.0,"1.1.63.255","CN"
1.1.64.0,"1.1.127.255","JP"
1.1.128.0,"1.1.255.255","TH"
1.2.0.0,"1.2.2.255","CN"
1.2.3.0,"1.2.3.255","AU"
1.2.4.0,"1.2.127.255","CN"
1.2.128.0,"1.2.255.255","TH"
1.3.0.0,"1.3.255.255","CN"
1.4.0.0,"1.4.0.255","AU"
1.4.1.0,"1.4.127.255","CN"
1.4.128.0,"1.4.255.255","TH"

如何拆分此CSV文件。

例如第一行的0.0.0.0 0.255.255.255 ZZ，以及如何添加具有3列的datagridview

Answer 1

您可以通过以下方式进行操作。

using System.IO;
static void Main(string[] args)
{
    using(var reader = new StreamReader(@"C:\test.csv"))
    {
        List<string> listA = new List<string>();
        List<string> listB = new List<string>();
        while (!reader.EndOfStream)
        {
            var line = reader.ReadLine();
            var values = line.Split(','); // or whatever yur get by reading that file

            listA.Add(values[0]);
            listB.Add(values[1]);
        }
    }
}

Answer 2

CSV文件是Tab delimited或Comma delimited文件。那就是您必须逐行读取文件，然后根据delimiter字符在一行中分隔可用的值。通常在CSV文件中显示第一行，通常是标题，您可以使用这些标题来生成KeyValue对，以使您的集合更高效。例如：

 Dictionary<int, Dictionary<String, String>> values = new Dictionary<int, Dictionary<String,String>>();
 using(FileStream fileStream = new FileStream(@"D:\MyCSV.csv", FileMode.Open, FileAccess.Read, FileShare.Read)) {
     using(StreamReader streamReader = new StreamReader(fileStream)){
          //You can skip this line if there is no header
          // Then instead of Dictionary<String,String> you use List<String>
          var headers = streamReader.ReadLine().Split(',');
          String line = null;
          int lineNumber = 1;
          while(!streamReader.EndOfStream){
               line = streamReader.ReadLine().split(',');
               if(line.Length == headers.Length){
                   var temp = new Dictionary<String, String>();
                   for(int i = 0; i < headers.Length; i++){
                      // You can remove '"' character by line[i].Replace("\"", "") or through using the Substring method
                      temp.Add(headers[i], line[i]);
                   }
                   values.Add(lineNumber, temp);
               }
               lineNumber++;
          }              
     }

如果CSV的数据结构是恒定的并且将来不会更改，则可以开发一个强类型数据模型并摆脱Dictionary类型。这种方法将更加优雅和高效。

Answer 3

首先，您的CSV行用引号引起来。复制/粘贴错误吗？如果没有，则需要将文件清除为有效的CSV文件。

您可以尝试使用Cinchoo ETL-一个开放源代码库，将CSV文件加载到数据表中，然后可以将其分配给DataGridView源。

我将向您展示两种方法，如何处理

有效CSV：（test.csv）

0.0.0.0,"0.255.255.255","ZZ"
1.0.0.0,"1.0.0.255","AU"
1.0.1.0,"1.0.3.255","CN"
1.0.4.0,"1.0.7.255","AU"
1.0.8.0,"1.0.15.255","CN"
1.0.16.0,"1.0.31.255","JP"
1.0.32.0,"1.0.63.255","CN"
1.0.64.0,"1.0.127.255","JP"
1.0.128.0,"1.0.255.255","TH"
1.1.0.0,"1.1.0.255","CN"
1.1.1.0,"1.1.1.255","AU"
1.1.2.0,"1.1.63.255","CN"
1.1.64.0,"1.1.127.255","JP"
1.1.128.0,"1.1.255.255","TH"

阅读CSV：

using (var p = new ChoCSVReader("test.csv"))
{
    var dt = p.AsDataTable();
    //Assign dt to DataGridView
}

下一步方法

无效CSV：（test.csv）

"0.0.0.0,""0.255.255.255"",""ZZ"""
"1.0.0.0,""1.0.0.255"",""AU"""
"1.0.1.0,""1.0.3.255"",""CN"""
"1.0.4.0,""1.0.7.255"",""AU"""
"1.0.8.0,""1.0.15.255"",""CN"""
"1.0.16.0,""1.0.31.255"",""JP"""
"1.0.32.0,""1.0.63.255"",""CN"""
"1.0.64.0,""1.0.127.255"",""JP"""
"1.0.128.0,""1.0.255.255"",""TH"""
"1.1.0.0,""1.1.0.255"",""CN"""
"1.1.1.0,""1.1.1.255"",""AU"""
"1.1.2.0,""1.1.63.255"",""CN"""
"1.1.64.0,""1.1.127.255"",""JP"""
"1.1.128.0,""1.1.255.255"",""TH"""

阅读CSV：

using (var p = new ChoCSVReader("Sample6.csv"))
{
    p.SanitizeLine += (o, e) =>
    {
        string line = e.Line as string;
        if (line != null)
        {
            line = line.Substring(1, line.Length - 2);
            line = line.Replace(@"""""", @"""");
        }

        e.Line - line;
    };

    var dt = p.AsDataTable();
    //Assign dt to DataGridView
}

希望有帮助。

如何分割CSV文件

3 个答案: