c# CSV 文本文件到单个字符串（或数组或列表），然后添加或更改每个字符串并输出到单个字符串变量

Question

我正在使用具有多行的 C# DataGridView（可能因用户输入而异）导出到纯文本文件，结果如下：

CompName,PowerOn,thin,Storage,acceptLic,verify,SSL,c:\test\myfile.img,root,P@ssw0rd,192.168.1.100
CompName,PowerOn,thin,Storage,acceptLic,verify,SSL,c:\test\myfile.img,root,P@ssw0rd,192.168.1.100
CompName,PowerOn,thin,Storage,acceptLic,verify,SSL,c:\test\myfile.img,root,P@ssw0rd,192.168.1.100

//...and more lines if user adds more

我想做的是解析文件并将每一行加载到一个变量中，我想将其附加到命令行可执行文件中，例如：

"C:\Program Files\Mytest\Mytest Tool\mytest.exe" -n=CompName --powerOn -dmode=convert -volume=storage1 --acceptLicense --noVerification --SSL c:\Users\me\Documents\down\myfile.img system1://root:myPassword@192.168.1.151

所以问题是这是怎么做到的？

我检查了许多示例，现在对于使用哪种方法来产生所需结果开始变得相当混乱。 （StreamReader、StringSplit、StringJoin 等等..）

我能够获取文件的内容以使用以下方法构建列表：

List<string> list = new List<string>();
        using (StreamReader reader = new StreamReader(@"c:\foo\stest.txt"))
        {
            string line;
            while ((line = reader.ReadLine()) != null)
            {
                list.Add(line); // Add to list.
                Console.WriteLine(line); // Write to console.
                StringBuilder builder = new StringBuilder();

        //but where to from here ?


            }

我在她的正确轨道上吗？我会很感激任何答案..

谢谢你

Answer 1

我在这里给你写了一些乱七八糟的逻辑，如果我的假设是错误的，请检查并纠正。

 List<string> list = new List<string>();
        using (StreamReader reader = new StreamReader(@"C:\Projects\ConsoleApplication1\ConsoleApplication1\bin\Debug\txt1.txt"))
        {
            string line;
            string[] parameters =  null;
            while ((line = reader.ReadLine()) != null)
            {
                list.Add(line); // Add to list.
                Console.WriteLine(line); // Write to console.
                StringBuilder builder = new StringBuilder();


                parameters = line.Split(',');

                builder.Append("-n=");
                int paramCount = 0;
                foreach (var param in parameters)
                {
                    if (paramCount == 0)
                    {
                        builder.Append(param + " ");
                    }
                    else if (paramCount == 2)
                    {
                        // your req seems you need static parameter here
                        // if my assumption is wrong, then correct your logic
                        builder.Append(string.Format("-dmode=convert "));
                    }
                    else if (paramCount == 3)
                    {
                        // your req seems you need static parameter here
                        // if my assumption is wrong, then correct your logic
                        builder.Append(string.Format("-volume=storage1 "));
                    }
                    else if(paramCount <= 5 )
                    {
                        builder.Append(string.Format("--{0} ", param));
                    }
                    else if (paramCount > 5)
                    {
                        //Correct the logic as per your requirement.                            
                        string sslParams = " --" + param + " ";
                        string[] sslParamvalues = parameters.Take(11).Skip(7).ToArray();
                         sslParams +=   string.Join(",", sslParamvalues);
                        builder.Append(string.Format("--{0} ", sslParams));
                    }
                    paramCount++;
                }
                Console.WriteLine(builder.ToString());

                Process p = new Process();
                p.StartInfo.FileName = @"C:\Program Files\Mytest\Mytest Tool\mytest.exe";
                p.StartInfo.Arguments = string.Format(builder.ToString());

                //p.Start();

Answer 2

Microsoft.VisualBasic.FileIO 命名空间中有一个名为TextFieldParser 的类，专门用于解析 CSV 数据。您可以使用它来解析文件中的数据。

一些示例代码展示了它是如何使用的：

using ( TextFieldParser csvReader = new TextFieldParser( fileName ) ) {
    csvReader.SetDelimiters( new string[] { "," } );
    csvReader.HasFieldsEnclosedInQuotes = true;

    MyType entry = null;
    while ( !csvReader.EndOfData ) {
        string[] fieldData = csvReader.ReadFields();
        // Code to build an entry or perform other actions goes here
    }

Answer 3

我认为你需要这样的东西：

    private string Process()
    {
        // You dont need this list
        //List<string> list = new List<string>();

        using (System.IO.StreamReader reader = new System.IO.StreamReader(@"c:\foo\stest.txt"))
        {
            string line;

            StringBuilder builder = new StringBuilder();

            do
            {
                line = reader.ReadLine();
                if (line== null)
                    continue;

                Console.WriteLine(line); // Write to console.

                // Process line Here
                 //string[] values = line.Split(',');
                //list.Add(line); // Add to list.
                builder.AppendLine(line);
            } while (!reader.EndOfStream);

            return builder.ToString();

        }
    }

要导出到文件只需使用

        string treated = Process();
        using (System.IO.StreamWriter writer = new System.IO.StreamWriter(@"c:\foo\stestTreated.txt", false, Encoding.Unicode))
        {
            writer.Write(treated);
            writer.Close();
        }