求高手解惑
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace WindowsFormsApplication9
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
int j=0;
string a = "12051220.003";
StreamReader myReader = new StreamReader(@"D:\"+a, Encoding.GetEncoding("GB2312"));
string myline = " ";
myline = myReader.ReadLine();

while ((myline = myReader.ReadLine()) != null)
{
j = j + 1;
myline.Replace(" "," ");
myline.Replace(" "," ");
myline.Replace(" "," ");
string[] sArray = myline.Split(' ');
if (j==4)
{

richTextBox1.AppendText(sArray[6] + "\r\n");
myWriter.Close();
return;

}

}

myReader.Close();

}
}

}
有两个问题第一个就是ReadLine()只能从第二行开始读，第一行被隔过去了
第二个问题是我想用myline.Replace(" "," ");
myline.Replace(" "," ");
myline.Replace(" "," ");
这段代码来实现将几个空格换成一个空格的目第，但是实现不了
举例
1 1 1 1 1
我想把上边的一行变为下边这样的格式
1 1 1 1 1

[解决办法]
myline = myReader.ReadLine();
while ((myline = myReader.ReadLine()) != null)

因为你ReadLine了两次
[解决办法]

C# code

while (myline.IndexOf("  ") >= 0){    myline = myline.Replace("  ", " ");}