我想在读入的文本文件中找到上海的电话号码



void MenuLoadClick(object sender, System.EventArgs e)
{
OpenFileDialog dlgOpenFile=new OpenFileDialog();
dlgOpenFile.Title="open";
dlgOpenFile.Filter="open(*.html)|*.html|All Files(*.*)|*.*";
if(dlgOpenFile.ShowDialog()==DialogResult.OK)
{
fileName=dlgOpenFile.FileName;
FileStream aFile=new FileStream(fileName,FileMode.Open);
StreamReader sr=new StreamReader(aFile);
this.textBox1.Clear();
this.textBox1.Text=sr.ReadToEnd();

Regex re= new Regex(@"^\(\d{3}\) \d{3}－\d{8}$');

下面该怎么样写？？？
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我要让他把文本中配批到的所有上海电话号码，都在textBox1中显示出来

把数据集绑定到textbox．

如果只是想匹配上海的电话号码,应该要跟上区号

FileStream fs = new FileStream(@"..\..\a1.txt", FileMode.Open);
StreamReader sr = new StreamReader(fs);

Regex reg = new Regex(@"(010)-[\d]{8}");

string text=sr.ReadToEnd();

MatchCollection mc= reg.Matches(text);
foreach (Match match in mc) {
Console.WriteLine(match.Value);
}
fs.Close();

void MenuLoadClick(object sender, System.EventArgs e)
{
OpenFileDialog dlgOpenFile=new OpenFileDialog();
dlgOpenFile.Title="open";
dlgOpenFile.Filter="open(*.html)|*.html|All Files(*.*)|*.*";
if(dlgOpenFile.ShowDialog()==DialogResult.OK)
{
fileName=dlgOpenFile.FileName;
FileStream aFile=new FileStream(fileName,FileMode.Open);
StreamReader sr=new StreamReader(aFile);
this.textBox1.Clear();
this.textBox1.Text=sr.ReadToEnd();

Regex myRegex= new Regex(@"^\(021)－[\d]{8}$");
this.textBox1.Text=ReadToEnd();
MatchCollection mc= reg.Matches(text);
foreach (Match mymatch in myMatchCollection )
{
Console.WriteLine(match.Value);
}
fs.Close();

别忘了 前面加上 using System.Text.RegularExpressions;

哦 好像写错啦

{
OpenFileDialog dlgOpenFile=new OpenFileDialog();
dlgOpenFile.Title="open";
dlgOpenFile.Filter="open(*.html)|*.html|All Files(*.*)|*.*";
if(dlgOpenFile.ShowDialog()==DialogResult.OK)
{
fileName=dlgOpenFile.FileName;
FileStream aFile=new FileStream(fileName,FileMode.Open);
StreamReader sr=new StreamReader(aFile);
this.textBox1.Clear();

Regex re= new Regex(@"^\(021)－[\d]{8}$");
string text = sr.ReadToEnd();
MatchCollection mc = re.Matches(text);
foreach (Match match in mc)
{
this.textBox1.Text = this.textBox1.Text + match.Value;

}
}