C＃逐行解析文本数据

Question

我的项目有问题，请让我在这里解释一下，我需要一些专家指导，因为我是编程新手。 我有这样的记事本中的数据：

10192 20351 30473 40499 50449 60234  
10192 20207 30206 40203 50205 60226  
10192 20252 30312 40376 50334 60252 

这是26线的数据，但我只只显示例如3行。这里按照优先级排序：

- 我只想读取文本文件，然后提取数字。例如：10192 20351等。

-I具有ListView控件的6列，我想显示号码的每一行，在它的列

第1栏|第2列|第3列|第4列|第5列|柱6

10192 | 20351 | 30473 | 40499 |50449 | 60234 

-off当然，如果可能的话，每次5位数字的第一个2位是一个独特的码，所有我想要的只是3最后一位数字。例如：192 351 473 499 234.因此，每个数字将会被修改10.000。

我想我是你们的困惑很多，对不起，这是我当前的代码

私人委托无效UpdateUiTextDelegate（字符串文本）; private void serial_DataRecieved（object sender，System.IO.Ports.SerialDataReceivedEventArgs e） { //收集接收到我们'缓冲区'（字符串）的字符。 string received_data; received_data = serial.ReadExisting（）; Dispatcher.Invoke（DispatcherPriority.Send，new UpdateUiTextDelegate（WriteData），received_data）; }

private void WriteData(String Text) 
    { 
     if (bufferData != "" || Text[0] == '1') 
      bufferData += Text; 
     if (bufferData.Length >= 35) 
     { 
      using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"C:\Users\Rads\Desktop\Training06.txt", true)) 
      { 
       file.WriteLine(bufferData); 
      } 
      listBox1.Items.Add(bufferData); 
      bufferData = ""; 
     } 
    } 
    #endregion 

    private void Window_Loaded(object sender, RoutedEventArgs e) 
    { 

    } 

    //Browse .txt file 
    private void Browse_btn_Click(object sender, RoutedEventArgs e) 
    { 
     Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog(); 

     dlg.DefaultExt = ".txt"; 
     dlg.Filter = "Text document (.txt)|*.txt"; 

     Nullable<bool> result = dlg.ShowDialog(); 

     if (result == true) 
     { 
      string filename = dlg.FileName; 
      textBox.Text = filename; 
     } 
    } 

    private void Parsing_String(string filename) 
    { 
     List<Row> list = new List<Row>(); 

     foreach (String str in File.ReadLines(filename)) 
     { 
      String[] strCols = str.Split(Convert.ToChar(" ")); 
      list.Add(new Row() 
      { 
       Column1 = strCols[0].Substring(2), 
       Column2 = strCols[1].Substring(2), 
       Column3 = strCols[2].Substring(2), 
       Column4 = strCols[3].Substring(2), 
       Column5 = strCols[4].Substring(2), 
       Column6 = strCols[5].Substring(2), 


      }); 
     } 

     dg.ItemsSource = list; 
    } 

    public class Row 
    { 
     public string Column1 { get; set; } 
     public string Column2 { get; set; } 
     public string Column3 { get; set; } 
     public string Column4 { get; set; } 
     public string Column5 { get; set; } 
     public string Column6 { get; set; } 

    } 

XAML代码

<Window x:Class="SamplingData.MainWindow" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    Title="MainWindow" Height="368" Width="401" Loaded="Window_Loaded"> 

<TabControl Height="332" HorizontalAlignment="Left" Name="tabControl1" VerticalAlignment="Top" Width="380"> 
    <TabItem Header="Sampling" Name="Sampling"> 
     <Grid> 
      <Label Content="DATA RECEIVED" Height="28" HorizontalAlignment="Left" Margin="6,6,0,0" Name="label1" VerticalAlignment="Top" /> 
      <Button Content="Connect" Height="23" HorizontalAlignment="Left" Margin="264,6,0,0" Name="ConnectButton" VerticalAlignment="Top" Width="75" Click="Connect_Comms" /> 
      <ListBox Height="222" HorizontalAlignment="Left" Margin="10,37,0,0" Name="listBox1" VerticalAlignment="Top" Width="329" /> 
     </Grid> 
    </TabItem> 
    <TabItem Header="Training" Name="tabItem1"> 
     <Grid> 
      <Button Content="Training" Height="23" HorizontalAlignment="Left" Margin="243,28,0,0" Name="Train_Btn" VerticalAlignment="Top" Width="75" /> 
      <Button Content="Browse" Height="23" HorizontalAlignment="Left" Margin="243,6,0,0" Name="Browse_btn" VerticalAlignment="Top" Width="75" Click="Browse_btn_Click" /> 
      <TextBox Height="23" HorizontalAlignment="Left" Margin="6,7,0,0" Name="textBox" VerticalAlignment="Top" Width="231" Background="{x:Null}"></TextBox> 
      <RadioButton Content="RadioButton" Height="16" HorizontalAlignment="Left" Margin="507,76,0,0" Name="radioButton1" VerticalAlignment="Top" /> 
      <DataGrid x:Name="dg" AutoGenerateColumns="False" Margin="0,57,0,0" DataContext="{Binding}"> 
       <DataGrid.Columns> 
        <DataGridTextColumn Binding="{Binding Column1}" Header="Column 1"></DataGridTextColumn> 
        <DataGridTextColumn Binding="{Binding Column2}" Header="Column 2"></DataGridTextColumn> 
        <DataGridTextColumn Binding="{Binding Column3}" Header="Column 3"></DataGridTextColumn> 
        <DataGridTextColumn Binding="{Binding Column4}" Header="Column 4"></DataGridTextColumn> 
        <DataGridTextColumn Binding="{Binding Column5}" Header="Column 5"></DataGridTextColumn> 
        <DataGridTextColumn Binding="{Binding Column6}" Header="Column 6"></DataGridTextColumn> 
       </DataGrid.Columns> 
      </DataGrid> 
     </Grid> 
    </TabItem> 
</TabControl> 

非常感谢，如果有人可以帮助我..

Answer 1

编辑：添加的行变量通过灰分建议：

鉴于你没有指定哪个对象你要写入数据我asssume这是一个数据行命名的行：

private void Parsing_String(string filename)  
{ 
    DataTable dt = CreateDataTable(); 
    foreach (String str in File.ReadLines(filename)) 
    { 
     String[] strCols = str.Split(Convert.ToChar(" ")); 
     DataRow Row = dt.NewRow(); //Where dt is a DataTable 
     for (int i =0; i < strCols.length; i++) 
     { 
      Row[i] = strCols[i].Substring(2); //This will start reading from the third character 
     } 
     dt.Rows.Add(Row); 
    } 
     listView1.ItemsSource = dt.Rows; 
} 

//**EDIT**: Just in case you don't have a datatable and you want to create a small one: 

public DataTable CreateDataTable() 
    { 
     DataTable dt = new DataTable(); 

     new string[] { "Column 1", "Column 2", "Column 3", "Column 4", "Column 5", "Column 6" } 
      .ToList() 
      .ForEach(c => { dt.Columns.Add(new DataColumn(c)); }); 
     return dt; 
    } 

编辑：最后一次尝试（上忽略代码）：

private void Parsing_String(string filename) 
    { 
     List<Row> list = new List<Row>(); 

     foreach (String str in File.ReadLines(filename)) 
     { 
      String[] strCols = str.Split(Convert.ToChar(" ")); 
      list.Add(new Row() 
      { 
       Column1 = strCols[0].Substring(2), 
       Column2 = strCols[1].Substring(2), 
       Column3 = strCols[2].Substring(2), 
       Column4 = strCols[3].Substring(2), 
       Column5 = strCols[4].Substring(2), 
       Column6 = strCols[5].Substring(2) 
      }); 
     } 

     dg.ItemsSource = list; 
    } 

    public class Row 
    { 
     public string Column1 { get; set; } 
     public string Column2 { get; set; } 
     public string Column3 { get; set; } 
     public string Column4 { get; set; } 
     public string Column5 { get; set; } 
     public string Column6 { get; set; } 
    } 

然后在你的xaml：

如果你想指定自定义标题，你将不得不改变它，以便它不会自动生成列，但使用绑定即：

<DataGrid x:Name="dg" AutoGenerateColumns="False"> 
     <DataGrid.Columns> 
      <DataGridTextColumn Binding="{Binding Column1}" Header="Column 1"></DataGridTextColumn> 
      <DataGridTextColumn Binding="{Binding Column2}" Header="Column 2"></DataGridTextColumn> 
      <DataGridTextColumn Binding="{Binding Column3}" Header="Column 3"></DataGridTextColumn> 
      <DataGridTextColumn Binding="{Binding Column4}" Header="Column 4"></DataGridTextColumn> 
      <DataGridTextColumn Binding="{Binding Column5}" Header="Column 5"></DataGridTextColumn> 
      <DataGridTextColumn Binding="{Binding Column6}" Header="Column 6"></DataGridTextColumn> 
     </DataGrid.Columns> 
    </DataGrid> 

编辑这将计算出的第一列总

protected int CalculateFirstColumnTotal(List<Row> list) 
{ 
    int total = 0; 
    foreach (Row row in list) 
     total += int.Parse(row.Column1); 
} 

编辑：

你从来没有真正调用Parsing_String方法，下面的行添加到浏览方法：

private void Browse_btn_Click(object sender, RoutedEventArgs e)  
{ 
    //Existing Code 
    Parsing_String(textBox.Text); //Add this line to the last line of the method. 
} 

Answer 2

我想你根本不需要正则表达式。您只需要按线路和空间分配string.Split。

string[] lines = data.Split(Enviroment.NewLine); 

对于每一行，您可以通过按空格分隔行来获取字段。

string[] fields = line.Split(' '); 

Answer 3

像这样的东西可能：

var result = from row in theFileAsString.Split('\n') 
      select new { 
       Columns = row.Split(' ').Select(s => s.Substring(2)) 
      } 

在那里你将有各自具有的数据包含字符串属性Columns项目的IEnumerable。

非常未经检验的，虽然，但你的想法。

Answer 4

using (var stream = File.Open(this.filename, FileMode.Open, FileAccess.Read) 
{ 
    var reader = new StreamReader(stream); 
    var data = reader.ReadLine(); 
    while (!String.IsNullOrWhitespace(data)) 
    { 
     string[] columns = data.Split(' '); 
     Console.WriteLine(string.Format("{0} {1} {2} {3} {4} {5}", columns[0], columns[1],)); 
     data = reader.ReadLine(); 
    } 
} 

Answer 5

您不必为此使用正则表达式。

var data = @"10192 20351 30473 40499 50449 60234 
10192 20207 30206 40203 50205 60226 
10192 20252 30312 40376 50334 60252"; 

var result = from line in data.Split(new[] { "\r\n", "\n" }, StringSplitOptions.RemoveEmptyEntries) 
      let splitted = line.Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries) 
      select splitted.Select(s => s.Substring(2)); 

或用于文件

using System.IO; // In the top 

var result = from line in File.ReadLines("path") 
      let splitted = line.Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries) 
      select splitted.Select(s => s.Substring(2)); 

result现在将包含字符串的序列的序列（其中前两个字符被删除）。这个版本适用于Unix和Windows的换行符。它还会删除可能导致其他答案失败的其他空白。

Answer 6

好的，这可能是矫枉过正，但你提到你想把数据放入一个listview（也许是一个数据网格？），在这种情况下，你可能想要将数据转换成某种对象形式。这一切取决于你一旦掌握了数据后你将如何处理这些数据。

假设一旦你获得了数据，你就想要操纵它或者做更多的事情，就可以尝试这样的事情 - 你应该可以直接将它放入一个新的控制台应用程序中，运行。

namespace ConsoleApplication6 
{ 
    using System; 
    using System.Collections.Generic; 
    using System.IO; 
    using System.Text.RegularExpressions; 

    class Program 
    { 
     static void Main(string[] args) 
     { 
      string filename = @"c:\test.txt"; 

      // Because you're working with a small file, we'll just read all the lines into memory 
      List<LineData> processedLines = new List<LineData>(); 
      foreach (var line in File.ReadAllLines(filename)) 
      { 
       processedLines.Add(new LineData(line)); 
      } 

      // Write out the line data to the console to prove that it has been read 
      foreach (var processedLine in processedLines) 
      { 
       Console.WriteLine(
        "{0},{1},{2},{3},{4},{5}", 
        processedLine.Column1, 
        processedLine.Column2, 
        processedLine.Column3, 
        processedLine.Column4, 
        processedLine.Column5, 
        processedLine.Column6); 
      } 
     } 
    } 

    public class LineData 
    { 
     public LineData(string line) 
     { 
      // Regex basically means find two digits ("Prefix") followed by 3 digits ("Value") 
      Regex regex = new Regex(@"(?<Prefix>\d{2})(?<Value>\d{3})"); 
      var lineMatches = regex.Matches(line); 
      if (lineMatches.Count != 6) 
      { 
       // You should really be throwing your own exception type... 
       throw new Exception("Expected 6 columns!"); 
      } 

      this.Column1 = this.ExtractMatchData(lineMatches[0]); 
      this.Column2 = this.ExtractMatchData(lineMatches[1]); 
      this.Column3 = this.ExtractMatchData(lineMatches[2]); 
      this.Column4 = this.ExtractMatchData(lineMatches[3]); 
      this.Column5 = this.ExtractMatchData(lineMatches[4]); 
      this.Column6 = this.ExtractMatchData(lineMatches[5]); 
     } 

     private string ExtractMatchData(Match match) 
     { 
      return match.Groups["Value"].Value; 
     } 

     public string Column1 { get; set; } 
     public string Column2 { get; set; } 
     public string Column3 { get; set; } 
     public string Column4 { get; set; } 
     public string Column5 { get; set; } 
     public string Column6 { get; set; } 
    } 
}