多行文本取段落文字

 

<asp:TextBox ID="TextBox1" runat="server" TextMode="MultiLine" Height="145px"
        Width="279px"></asp:TextBox>
    <asp:Button ID="Button1" runat="server" οnclick="Button1_Click" Text="Button" />

1. protected void Button1_Click(object sender, EventArgs e)
2.         {
3.             //Response.Write(this.TextBox1.Text);
5.             string s = this.TextBox1.Text.Trim(); 
6.             string temp = "";
7.             int count = 1;
8.             if (s.Contains("/r/n"))
9.             {
10.                 while (true)
11.                 {
12.                     if (!s.Contains("/r/n"))
13.                     {
14.                         Response.Write("temp " + count + " == >" + s);
15.                         break;
16.                     }
17.                     temp = s.Substring(0, s.IndexOf("/r/n", 0));
18.                     if (temp == "")
19.                     {
20.                         s = s.Remove(0, temp.Length + 2);
21.                         continue;
22.                     }
23.                     Response.Write("temp " + count + " ==> " + temp + "<br/>");
24.                     s = s.Remove(0, temp.Length + 2);
25.                     count++;
26.                 }
27.             }
28.             else
29.             {
30.                 Response.Write("temp " + count + " ==> " + s);
31.             }
32.         }