System.IO.TextReader tr = System.IO.File.OpenText("d:\\test123.txt"); System.Collections.ArrayList al = new ArrayList();string tmp = tr.ReadLine(); while(tmp != null) { al.Add(tmp); tmp = tr.ReadLine(); }tr.Close();string[] txts = new string[al.Count]; al.CopyTo(txts,0);
//然后是随机抽取 System.Random rd = new Random(); System.Collections.ArrayList alc = al.Clone();//随机抽取5个不重复的行 for(int i=0;i<5;i++) { int len = alc.Count-1; int x = rd.Next(len); //输出alc[x] alc.RemoveAt(x); }
private void ReadTxt() { string filePath = Application.StartupPath + "\\test.txt"; string[] fileStr = new string[100]; int i = 0; FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.None); StreamReader sr = new StreamReader(fs,System.Text.Encoding.Default ); //sr.BaseStream.Seek(0, SeekOrigin.Begin); string strLine = sr.ReadLine(); while (strLine != null) { this.textBox1.Text += strLine + "\r\n"; strLine = sr.ReadLine(); fileStr[i] = strLine; i++; } sr.Close(); fs.Close(); }
System.Collections.ArrayList al = new ArrayList();string tmp = tr.ReadLine();
while(tmp != null)
{
al.Add(tmp);
tmp = tr.ReadLine();
}tr.Close();string[] txts = new string[al.Count];
al.CopyTo(txts,0);
System.Random rd = new Random();
System.Collections.ArrayList alc = al.Clone();//随机抽取5个不重复的行
for(int i=0;i<5;i++)
{
int len = alc.Count-1;
int x = rd.Next(len);
//输出alc[x]
alc.RemoveAt(x);
}
{
string filePath = Application.StartupPath + "\\test.txt";
string[] fileStr = new string[100];
int i = 0;
FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.None);
StreamReader sr = new StreamReader(fs,System.Text.Encoding.Default );
//sr.BaseStream.Seek(0, SeekOrigin.Begin);
string strLine = sr.ReadLine();
while (strLine != null)
{
this.textBox1.Text += strLine + "\r\n";
strLine = sr.ReadLine();
fileStr[i] = strLine;
i++;
}
sr.Close();
fs.Close(); }