做备忘录(前台删除功能) 数组列表

private void btn_delete_Click(object sender, EventArgs e)
{
if (this.listBox1.Items.Count == 0)
{
MessageBox.Show("对不起，您的备忘录中没有要删除的数据！","Warning",MessageBoxButtons.OK,MessageBoxIcon.Warning);
}
else

{
FileStream FStream = new FileStream(@"F:\ASP.NET\备忘录\a.txt",FileMode.Open);
StreamReader SReader = new StreamReader(FStream,Encoding.Default);
string strLine = SReader.ReadLine();
List<string> list = new List<string>();
while(strLine!=null)
{
if (strLine != null && !strLine.Equals(""))
{
string[] read = strLine.Split(' ');
string a = this.listBox1.Items[this.listBox1.SelectedIndex].ToString();
string[] str = a.Split(' ');
if (str[0] != read[0].Trim() || str[1] != read[1].Trim() || str[2] != read[2].Trim()||str[3]!=read[3].Trim()||str[4]!=read[4].Trim())
{
list.Add(strLine);
}

}

strLine = SReader.ReadLine();
}
SReader.Close();
FStream.Close();
FileInfo info = new FileInfo(@"F:\ASP.NET\备忘录\a.txt");
info.Delete(); //删除源文件

FileStream FStream1 = new FileStream(@"F:\ASP.NET\备忘录\a.txt", FileMode.Append);
StreamWriter StrWriter = new StreamWriter(FStream1, Encoding.Default);
foreach (string li in list)
{
StrWriter.WriteLine(li);
}
MessageBox.Show("是否要删除您选中的记录", "Warning", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
StrWriter.Close();
FStream.Close();
Scan();
}
}//删除备忘录