C#的TCP通信
TCP是连接模型,如下:
服务器连接 服务器断开
↓ ↑
服务器接收→服务器处理→服务器发送
↑ ↓
客户端发送←客户端处理←客户端接收
↑ ↓
客户端连接 客户端断开
服务器代码如下:
//
ServerListen
TcpListener tcplistener
=
new
TcpListener(
int
.Parse(txtPort.Text));
tcplistener.Start();
byte
[] btServerReceive
=
new
byte
[
256
];
string
strServerReceive
=
string
.Empty;
//
Loop for Listen
while
(
true
)
{
TcpClient tcp
=
tcplistener.AcceptTcpClient();
NetworkStream ns
=
tcp.GetStream();
int
intReceiveLength
=
ns.Read(btServerReceive,
0
,btServerReceive.Length);
strServerReceive
=
UnicodeEncoding.Unicode.GetString(btServerReceive,
0
,intReceiveLength);
txtServerResult.AppendText(
"
ServerReceive:
"
+
strServerReceive
+
"
"
);
ns.Write(btServerReceive,
0
,btServerReceive.Length);
txtServerResult.AppendText(
"
ServerSend:
"
&
相关文档:
第一种
<%=RetInfo("DB","数据库") %>
<%=RetInfo("YX_UpFile","上传文件") %>
<%=RetfileInfo("Include/", "广告")%>
//从前台调用后台方法
//从前台调用后台的方法..并向其方法传入不同的参数!
第二种
<ItemTemplate >
<%#Ret_stat(Convert.ToInt16(Eval("YX_Stat1")), "热点")%>
......
1. 打开新的窗口并传送参数:
传送参数:
response.write("<script>window.open(’*.aspx?id="+this.DropDownList1.SelectIndex+"&id1="+...+"’)</script>")
接收参数:
string a = Request.QueryString("id");
string b = Request.QueryString("id1");
2.为按钮添加对话框
Button1 ......
private void save_db(){
SqlConnection conn = new SqlConnection(ConfigurationSettings.AppSettings[""].ToString());
SqlCommand comm = new SqlCommand();
conn.Open();
SqlTransaction rollbk2= conn.BeginTransaction();
& ......
c#事务回滚(转)
作者:xue5ya 来源:博客园 发布时间:2009-03-20 16:08 阅读:263 次 原文链接 [收藏]
Code
public void UpdateContactTableByDataSet(DataSet ds,string strTblName)
{
......