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Detailed explanation of WMI code examples for C# server performance monitoring
- 黄舟Original
- 2017-03-15 10:07:053324browse
1.WMIIntroduction
WMI is the abbreviation of English Windows Management Instrumentation. By using WMI, we can obtain the performance parameters and process operation status of local or remote servers. And most of the hardware information, but the premise is that the running user must have sufficient permissions, such as the administrator group user, etc. This is also a convenient and fast way to do load balancing.
2. When using, first add System.Management.dll, and then reference
using System.Management;
3. Define remote access
public
class
ManagementConnectPool
...
{
private
static
System.Management.ConnectionOptions Conn =
new
ConnectionOptions() ;
private
static
ManagementObjectSearcher mos =
new
ManagementObjectSearcher();
private
string
username = "";
private
string
pwd = "";
private
string
space="";
private
string
server = "";
public
ManagementConnectPool(
string
mpusername,
string
mppwd ,
string
mpspace ,
string
mpserver)
...
{
this
.username = mpusername;
this
.pwd = mppwd;
this
.space = mpspace;
this
.server = mpserver;
Conn.Username = mpusername;
Conn.Password = mppwd;
string
scopestring ="//" + mpserver + mpspace;
System.Management.ManagementScope Ms =
new
ManagementScope(scopestring);
Ms.Connect();
mos.Scope = Ms;
}
public
ManagementObjectCollection getQueryResult(
string
queryString)
...
{
ObjectQuery oq =
new
ObjectQuery();
oq.QueryString = queryString;
mos.Query = oq;
ManagementObjectCollection moc =mos.Get();
return
moc;
}
}4. Get CPU, memory, network traffic and other information
public
class
Monitor
...
{
private
string
username = "";
private
string
pwd ="";
private
string
ip = "";
ManagementConnectPool mcp;
WMSServerClass server;
public
Monitor(
string
username,
string
pwd,
string
ip)
...
{
this
.username = username;
this
.pwd = pwd ;
this
.ip = ip;
mcp =
new
ManagementConnectPool(username,pwd,"/root/cimv2",ip);
server =
new
WMSServerClass();
}
WMI方式获取网卡流量
#region
WMI方式获取网卡流量
private
void
getNetWorkFlow()
...
{
ManagementObjectCollection moc = mcp.getQueryResult(@"select * from Win32_NetworkAdapter where macaddress<>null and manufacturer<>'Microsoft'");
string
[] list =
new
string
[moc.Count] ;
foreach
(System.Management.ManagementObject mymac
in
moc)
...
{
string
a = mymac["Speed"].ToString();
//
null WMI未实现该属性
Console.WriteLine(a.ToString());
}
}
#endregion
WMI方式获取CPU信息
#region
WMI方式获取CPU信息
private
void
getCpuInfo()
...
{
ManagementObjectCollection moc = mcp.getQueryResult("select * from Win32_Processor");
string
[] list =
new
string
[moc.Count];
int
i = 0;
foreach
(ManagementObject mo
in
moc)
...
{
string
total = mo.GetPropertyValue("LoadPercentage").ToString();
list[i]=total;
i++;
}
}
#endregion
WMI方式获取内存使用率
#region
WMI方式获取内存使用率
public
string
getMemoryUsage()
...
{
ManagementObjectCollection moc = mcp.getQueryResult("select * from Win32_LogicalMemoryConfiguration");
int
totalm = 1;
int
avilablem = 1;
foreach
(ManagementObject mo
in
moc)
...
{
string
total = mo.GetPropertyValue("TotalPhysicalMemory").ToString();
totalm =
int
.Parse(total);
}
moc = mcp.getQueryResult("select * from Win32_PerfRawData_PerfOS_Memory");
foreach
(ManagementObject mo
in
moc)
...
{
string
avilable = mo.GetPropertyValue("AvailableKBytes").ToString();
avilablem =
int
.Parse(avilable);
}
int
usedm = totalm - avilablem;
double
memoryusage = (
double
)usedm * (
double
)100 / (
double
)totalm ;
return
memoryusage.ToString();
}
#endregion
}5. Get local machine information (WEB)
1.如何用WMI获得指定磁盘的容量
#region
1.如何用WMI获得指定磁盘的容量
private
string
DriveType(
string
type)
...
{
string
rtntype="";
switch
(type)
...
{
case
"1":
rtntype="Not Type";
break
;
case
"2":
rtntype="Floppy disk";
break
;
case
"3":
rtntype="Hard disk";
break
;
case
"4":
rtntype="Removable drive or network drive";
break
;
case
"5":
rtntype="CD-ROM";
break
;
case
"6":
rtntype="RAM disk";
break
;
default
:
break
;
}
return
rtntype;
}
private
void
Button1_Click(
object
sender, System.EventArgs e)
...
{
SelectQuery query=
new
SelectQuery("Select * From Win32_LogicalDisk");
ManagementObjectSearcher searcher=
new
ManagementObjectSearcher(query);
foreach
(ManagementBaseObject disk
in
searcher.Get())
...
{
Response.Write(disk["Name"] +" "+DriveType(disk["DriveType"].ToString()) + " " + disk["VolumeName"]+"<br>");
}
}
#endregion
2.如何用WMI获得指定磁盘的容量
#region
2.如何用WMI获得指定磁盘的容量
private
void
Button2_Click(
object
sender, System.EventArgs e)
...
{
ManagementObject disk =
new
ManagementObject("win32_logicaldisk.deviceid="c:"");
disk.Get();
Response.Write("Logical Disk Size = " + disk["Size"] + " bytes");
}
#endregion
3.如何列出机器中所有的共享资源
#region
3.如何列出机器中所有的共享资源
private
void
Button3_Click(
object
sender, System.EventArgs e)
...
{
ManagementObjectSearcher searcher =
new
ManagementObjectSearcher("SELECT * FROM Win32_share");
foreach
(ManagementObject share
in
searcher.Get())
...
{
Response.Write(share.GetText(TextFormat.Mof));
}
}
#endregion
4.怎样写程控制让系统中的某个文件夹共享或取消共享
#region
4.怎样写程控制让系统中的某个文件夹共享或取消共享
private
void
Button4_Click(
object
sender, System.EventArgs e)
...
{
/**/
/*
首先，这需要以有相应权限的用户登录系统才行
将
object[] obj = {"C:/Temp","我的共享",0,10,"Dot Net 实现的共享",""};
改为
object[] obj = {"C:/Temp","我的共享",0,null,"Dot Net 实现的共享",""};
就可以实现授权给最多用户了。
*/
ManagementClass _class =
new
ManagementClass(
new
ManagementPath("Win32_Share"));
object
[] obj =
...
{"C:/Temp","我的共享",0,10,"Dot Net 实现的共享",""}
;
_class.InvokeMethod("create",obj);
}
#endregion
5.如何获得系统服务的运行状态
#region
5.如何获得系统服务的运行状态
private
void
Button5_Click(
object
sender, System.EventArgs e)
...
{
string
[] lvData =
new
string
[4];
ManagementObjectSearcher searcher =
new
ManagementObjectSearcher("SELECT * FROM Win32_Service");
foreach
(ManagementObject mo
in
searcher.Get())
...
{
lvData[0] = mo["Name"].ToString();
lvData[1] = mo["StartMode"].ToString();
if
(mo["Started"].Equals(
true
))
lvData[2] = "Started";
else
lvData[2] = "Stop";
lvData[3] = mo["StartName"].ToString();
Response.Write(lvData[0]+lvData[1]+lvData[2]+lvData[3]);
}
}
#endregion
6.通过WMI修改IP，而实现不用重新启动
#region
6.通过WMI修改IP，而实现不用重新启动
private
void
Button6_Click(
object
sender, System.EventArgs e)
...
{
ReportIP();
//
SwitchToDHCP();
SwitchToprivate();
Thread.Sleep( 5000 );
ReportIP();
Response.Write( "end." );
}
private
void
SwitchToDHCP()
...
{
ManagementBaseObject inPar =
null
;
ManagementBaseObject outPar =
null
;
ManagementClass mc =
new
ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach
( ManagementObject mo
in
moc )
...
{
if
( ! (
bool
) mo["IPEnabled"] )
continue
;
inPar = mo.GetMethodParameters("EnableDHCP");
outPar = mo.InvokeMethod( "EnableDHCP", inPar,
null
);
break
;
}
}
private
void
SwitchToprivate()
...
{
ManagementBaseObject inPar =
null
;
ManagementBaseObject outPar =
null
;
ManagementClass mc =
new
ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach
( ManagementObject mo
in
moc )
...
{
if
( ! (
bool
) mo[ "IPEnabled" ] )
continue
;
inPar = mo.GetMethodParameters( "Enableprivate" );
inPar["IPAddress"] =
new
string
[]
...
{ "192.168.1.1" }
;
inPar["SubnetMask"] =
new
string
[]
...
{ "255.255.255.0" }
;
outPar = mo.InvokeMethod( "Enableprivate", inPar,
null
);
break
;
}
}
private
void
ReportIP()
...
{
Response.Write( "****** Current IP addresses:" );
ManagementClass mc =
new
ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach
( ManagementObject mo
in
moc )
...
{
if
( ! (
bool
) mo[ "IPEnabled" ] )
continue
;
string
str="{0} SVC: '{1}' MAC: [{2}]";
str=
string
.Format(mo["Caption"].ToString(), mo["ServiceName"].ToString(),mo["MACAddress"].ToString());
Response.Write(str);
string
[] addresses = (
string
[]) mo[ "IPAddress" ];
string
[] subnets = (
string
[]) mo[ "IPSubnet" ];
Response.Write( " Addresses :" );
foreach
(
string
sad
in
addresses)
Response.Write(sad+"<br>");
Response.Write( " Subnets :" );
foreach
(
string
sub
in
subnets )
Response.Write(sub+"<br>");
}
}
#endregion
7.如何利用WMI远程重启远程计算机
#region
7.如何利用WMI远程重启远程计算机
private
void
Button7_Click(
object
sender, System.EventArgs e)
...
{
Response.Write("Computer details retrieved using Windows Management Instrumentation (WMI)");
Response.Write("mailto:singlepine@hotmail.com");
Response.Write("=========================================================================");
//
连接远程计算机
ConnectionOptions co =
new
ConnectionOptions();
co.Username = "john";
co.Password = "john";
System.Management.ManagementScope ms =
new
System.Management.ManagementScope("//192.168.1.2/root/cimv2", co);
//
查询远程计算机
System.Management.ObjectQuery oq =
new
System.Management.ObjectQuery("SELECT * FROM Win32_OperatingSystem");
ManagementObjectSearcher query1 =
new
ManagementObjectSearcher(ms,oq);
ManagementObjectCollection queryCollection1 = query1.Get();
foreach
( ManagementObject mo
in
queryCollection1 )
...
{
string
[] ss=
...
{""}
;
mo.InvokeMethod("Reboot",ss);
Response.Write(mo.ToString());
}
}
#endregion
8.利用WMI创建一个新的进程
#region
8.利用WMI创建一个新的进程
private
void
Button8_Click(
object
sender, System.EventArgs e)
...
{
//
Get the object on which the method will be invoked
ManagementClass processClass =
new
ManagementClass("Win32_Process");
//
Get an input parameters object for this method
ManagementBaseObject inParams = processClass.GetMethodParameters("Create");
//
Fill in input parameter values
inParams["CommandLine"] = "calc.exe";
//
Execute the method
ManagementBaseObject outParams = processClass.InvokeMethod ("Create", inParams,
null
);
//
Display results
//
Note: The return code of the method is provided in the "returnvalue" property of the outParams object
Response.Write("Creation of calculator process returned: " + outParams["returnvalue"]);
Response.Write("Process ID: " + outParams["processId"]);
}
#endregion
9.如何通过WMI终止一个进程
#region
9.如何通过WMI终止一个进程
private
void
Button9_Click(
object
sender, System.EventArgs e)
...
{
ManagementObject service =
new
ManagementObject("win32_service="winmgmt"");
InvokeMethodOptions options =
new
InvokeMethodOptions();
options.Timeout =
new
TimeSpan(0,0,0,5);
ManagementBaseObject outParams = service.InvokeMethod("StopService",
null
, options);
Response.Write("Return Status = " + outParams["Returnvalue"]);
}
#endregion
10.如何用WMI 来获取远程机器的目录以及文件
#region
10.如何用WMI 来获取远程机器的目录以及文件
private
void
Button10_Click(
object
sender, System.EventArgs e)
...
{
ManagementObject disk =
new
ManagementObject(
"win32_logicaldisk.deviceid="c:"");
disk.Get();
Response.Write("Logical Disk Size = " + disk["Size"] + " bytes");
}
#endregion
11.网卡的MAC地址
#region
11.网卡的MAC地址
private
void
Button11_Click(
object
sender, System.EventArgs e)
...
{
ManagementClass mc =
new
ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach
(ManagementObject mo
in
moc)
...
{
if
((
bool
)mo["IPEnabled"] ==
true
)
Response.Write("MAC address"+mo["MacAddress"].ToString()+"<br>");
mo.Dispose();
}
}
#endregion
12.CPU的系列号
#region
12.CPU的系列号
private
void
Button12_Click(
object
sender, System.EventArgs e)
...
{
string
cpuInfo = "";
//
cpu序列号
ManagementClass cimobject =
new
ManagementClass("Win32_Processor");
ManagementObjectCollection moc = cimobject.GetInstances();
foreach
(ManagementObject mo
in
moc)
...
{
cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
Response.Write(cpuInfo);
}
}
#endregion
13.主板的系列号
#region
13.主板的系列号
private
void
Button13_Click(
object
sender, System.EventArgs e)
...
{
ManagementObjectSearcher searcher=
new
ManagementObjectSearcher("SELECT * FROM Win32_BaseBoard");
foreach
(ManagementObject share
in
searcher.Get())
...
{
Response.Write("主板制造商:" + share["Manufacturer"].ToString()) ;
Response.Write("型号:" +share["Product"].ToString()) ;
Response.Write("序列号:"+share["SerialNumber"].ToString()) ;
}
}
#endregion
14.获取硬盘ID
#region
14.获取硬盘ID
private
void
Button14_Click(
object
sender, System.EventArgs e)
...
{
String HDid;
ManagementClass cimobject =
new
ManagementClass("Win32_DiskDrive");
ManagementObjectCollection moc = cimobject.GetInstances();
foreach
(ManagementObject mo
in
moc)
...
{
HDid = (
string
)mo.Properties["Model"].Value;
Response.Write(HDid);
}
}
#endregion
15.获取本机的用户列表
#region
15.获取本机的用户列表
private
void
Button15_Click(
object
sender, System.EventArgs e)
...
{
SelectQuery query =
new
SelectQuery("SELECT * FROM Win32_UserAccount");
ManagementObjectSearcher searcher =
new
ManagementObjectSearcher(query);
foreach
(ManagementObject os
in
searcher.Get())
...
{
Response.Write(os["Name"]);
}
}
#endregion
}
Through the above The introduced method can easily obtain the performance, process and hardware information of remote or local machines. In addition: WMI can also be called by using scripts such as Vbscript.
Note: Some of the resources come from the blog of netizen 小山. But not enough detail on what WMI is capable of in terms of server performance!
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