c# 读取文本文件多行的 某几列数据 （转）

一、文本文件需要具备的条件:

    每一行文件格式固定、并且字符串以空格相隔开的

   如一下数据：

   1 BAIS  59211   106.60625   23.90337   160.4409 2009-12-31  14:00:0 

   2 BFLJ  56651   100.21865   26.84876  2353.5596 2009-12-31  14:00:0  

   3 CQBB  57511   106.44344   29.84245   217.4292 2009-12-31  14:00:0 

二、处理思路：

  用循环语句，将数据存到数组中并以空格分割,需要的命名空间using System.IO;

三、代码：

StreamReader sr = new StreamReader(File.Open("文件名", FileMode.Open), Encoding.GetEncoding("GB2312"));

while (true)
            {
                string line = sr.ReadLine();
                if (line == string.Empty || line == null) break;
                string[] data = line.Split(' ');
                ArrayList mydata = new ArrayList();
                for (int i = 0; i < data.Length; i++)
                {
                    if (data[i].Trim() != string.Empty)
                    {
                        mydata.Add(data[i].Trim());
                    }
                }

｝

读出来的mydata[0]，mydata[1]........

分别是每行的第一列 第二列................

 

方式二：

 while (strLine2 != null)
                        {

 

 

                            data = strLine2.Split(' ');
                               //将一行数据写入数组data中，写入时以空格为分割（间隔）,意思是空一格写一个数据
                            ArrayList mydata = new ArrayList();//动态移动数组
                            for (int i = 0; i < data.Length; i++)
                            {
                                if (data[i].Trim() != string.Empty)
                                {
                                    mydata.Add(data[i].Trim());
                                }
                            }

                                               strLine2 = sr.ReadLine();

                                   richTextBox1.Text += mydata[1].ToString() + mydata[2].ToString() + " ";  //此处选出对应的数组写入richTextBox1                           }

 

处理的数据

 年    月   日 温度
 1956    9   18  380

 1956    5   4  280

 1956    4  10  358
 1957    6    4  352