修改文本文件

有一个文本文件的内容如下：

ClientEntityRemark=HuNan Power Trap Receive Program
#MsgSeparator
MsgSeparator=~
#Client Entity Name
ClientEntityName=ADP_SNMPTRAP_192.168.6.39
#Sms Server Entity Name
SmsServerEntityName=MGR_SmsServer
#Alarm Manager Entity Name
AlarmManagerEntityName=MGR_ALARM
#Software Monitor Entity Name
SWMonitorEntityName=MGR_SysSWMonitor

要把ClientEntityName=ADP_SNMPTRAP_192.168.6.39这句该成ClientEntityName=ADP_SNMPTRAP_本机ip地址

 

1 private void main()
2 {
3    GetIP();
4    string filename=@"C:\env.properties"; 
5    string strsearch = "ClientEntityName";
6    int charcount = 30;
7    modifyfile(filename,strsearch,charcount);
8 }

 

private void GetIP()
        {
            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection nics = mc.GetInstances();
            foreach(ManagementObject nic in nics)
            {
                if(Convert.ToBoolean(nic["ipEnabled"]) == true)
                {
                    //Console.WriteLine((nic["IPAddress"] as String[])[0]);
                    this.ip =(nic["IPAddress"] as String[])[0];
                                        
                }
            }

        }

 

private void modifyfile(string filename ,string strsearch,int charcount)
        {
            StreamReader   sr   =   new   StreamReader(filename,System.Text.Encoding.Default);
            string strSouce = sr.ReadToEnd();
            sr.Close();
            string str = this.Getstring(strSouce,strsearch,charcount);
            StreamWriter sw = new StreamWriter(filename);
            sw.Write(str);
            sw.Flush();
            sw.Close();
        }

 

private string Getstring(string strSouce,string strsearch,int  charcount)//ip
        {
            
            int strofindex =strSouce.IndexOf(strsearch,0);
            string strlastPart = strSouce.Substring(strofindex+charcount);
            int ipindex = strlastPart.IndexOf("\r\n",0);
            string strip = strlastPart.Substring(0,ipindex);
            //ip的第四部分不一样
            switch (strsearch)
            {                case "ClientEntityName":
                    strip =  this.ip.ToString();
                    break;
                
            }