多关键字查询 问题

Question

我也问过类似的问题
楼主参考一下吧
http://community.csdn.net/Expert/topic/5268/5268677.xml?temp=4.540652E-02

Answer 1

给你个简单的例子string str = "我爱你老虎油";
int i = System.Text.RegularExpressions.Regex.Matches(str,"我爱你").Count;
//i即是我爱你在文章中出现的次数

Answer 2

这段代码你可以参考一下呵：//分行搜索
private void MenuItemSearchLine_Click(object sender, EventArgs e)
        {
            string[] strsRegs = new string[100];
            char[] n = { '\n' };            if (TextBox.Text.Length != 0)   //TextBox.Text是显示文章的地方
            {
                strsRegs = AcceptStr.Split(n);  //AcceptStr是你要搜索的关键字                FileStream file = new FileStream(filename, FileMode.Open);  //filename是你要搜索的文章
                StreamReader sr = new StreamReader(file, ansi);                Dictionary<string, int> key = new Dictionary<string, int>();  //记录关键字和它的次数
                int i = 1;//记录行数                string Strline;
                Strline = sr.ReadLine();
                while (Strline != null)
                {
                    foreach (string strReg in strsRegs)
                    {
                        if (!strReg.Equals(""))
                        {
                            
                            key.Add(strReg, 0);                            Regex regex = new Regex(strReg);
                            MatchCollection mc = regex.Matches(Strline);
                            if (mc.Count > 0)
                            {
                                for (int j = 0; j < mc.Count; j++)
                                {
                                    key[strReg]++;  //
                                }
                            }
                            richTextBoxResult.Text += "关键字:" + strReg + "在第" + i + "行出现" + key[strReg] + "次。\n";
                        }
                    }
                    Strline = sr.ReadLine();
                    i++;
                    key.Clear();
                }
                sr.Close();
            }
        }