Re: WMI Invoke Method - C# Discussion Boards

8-May-07 9:46

Hi,

I want to invoke DsmSetLoadBalancePolicy through WMI; whatever I try, it gives me in valid parameters.
Could someone please help me here.

Regards,
DJ.

dancelicious8-May-07 9:51

8-May-07 9:51

Just to add to it, I am using C# (may be its obvious Big Grin | :-D

Judah Gabriel Himango8-May-07 13:00

Judah Gabriel Himango

8-May-07 13:00

Show us how you're trying it. Also, have you looked at the System.Management.dll included in the .NET framework?

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Judah Himango

dancelicious8-May-07 15:55

8-May-07 15:55

I am already using System.Management
This is what I am doing.
- Read the current load balance policy of the lun we are interested in
- create new ManagementBaseObject from this object
- Use this close as parameter to the invoke method.

I think creating a clone may not be a good diea but I am not sure how to create a ManagementBaseObject of a specific class type.

Following is the code snippet for your reference.

int ChangeLoadBalancePolicy(string szLunName, uint uiLbPolicy, List<ulong> lu64PathIds)
{
try
{
string szScope = "\\\\localhost\\root\\WMI";
ManagementClass deviceInfo = new ManagementClass( szScope,
"MYDSM_QueryLBPolicy",
null);
ManagementObjectCollection deviceCollection = deviceInfo.GetInstances();

ManagementBaseObject policyObj;

// Get the LB Policies for each device
// and for each device create associated DSM Path objects
foreach (ManagementObject device in deviceCollection)
{
string szInstanceName = device["InstanceName"].ToString();

// if found the instance
if (szInstanceName.Equals(szLunName))
{
ManagementBaseObject lbPolicy = (ManagementBaseObject)device["LoadBalancePolicy"];
policyObj = (ManagementBaseObject)lbPolicy.Clone();

ManagementBaseObject[] dsmPathList = (ManagementBaseObject[])lbPolicy["DSM_Paths"];
ManagementBaseObject[] inDsmPath;
inDsmPath = new ManagementBaseObject[dsmPathList.Length];

int i = 0;
// For each Path, get the adapter info, which has the path info
foreach (ManagementBaseObject dsmPath in dsmPathList)
{
//ManagementBaseObject mPath;
inDsmPath[i] = (ManagementBaseObject)dsmPath.Clone();

inDsmPath[i]["DsmPathId"] = (ulong)dsmPath["DsmPathId"];
inDsmPath[i]["Reserved"] = 1;
inDsmPath[i]["PathWeight"] = 0;
bPathSelected = false;

// If DSM path id is slected as a part of the change policy request
// mark it as primary path.
foreach (ulong u64PathId in lu64PathIds)
if (u64PathId.Equals((ulong)dsmPath["DsmPathId"]))
{
dsmPath.SetPropertyValue("PrimaryPath", 1);
inDsmPath[i]["PrimaryPath"] = 1;
bPathSelected = true;
m_Log.WriteEntry(dsmPath["DsmPathId"].ToString() + " is selected");
}

if (!bPathSelected)
{
dsmPath.SetPropertyValue("PrimaryPath", 0);
m_Log.WriteEntry(dsmPath["DsmPathId"].ToString() + " not selected");
inDsmPath[i]["PrimaryPath"] = 0;
}
i++;
}

// Preparing the in parameter
policyObj["LoadBalancePolicy"] = uiLbPolicy;
policyObj["Version"] = 1;
policyObj["Reserved"] = 1;
policyObj["DSMPathCount"] = inDsmPath.Length;
policyObj["DSM_Paths"] = inDsmPath;

ManagementClass policyInfo = new ManagementClass(szScope, "MYDSM_SetLBPolicy", null);
ManagementObjectCollection lunCollection = policyInfo.GetInstances();

foreach (ManagementObject lun in lunCollection)
{
if (szLunName.Equals(lun["InstanceName"].ToString()))
{
// Method Options
InvokeMethodOptions methodOptions = new InvokeMethodOptions();
methodOptions.Timeout = TimeSpan.FromMinutes(1);

ManagementBaseObject tinParams = lun.GetMethodParameters("DsmSetLoadBalancePolicy");
tinParams["LoadBalancePolicy"] = (ManagementBaseObject)policyObj;

ManagementBaseObject outParams = lun.InvokeMethod("DsmSetLoadBalancePolicy", tinParams, methodOptions);

return (int)outParams["returnValue"];
}
}
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}

dancelicious9-May-07 14:26

splashScreen, .exe and con class

9-May-07 14:26

OKAY!.
Finally the problem solved and lesson learned.

What I was doing is sending a "ManagementBaseObject" object as in parameter but the InvokeMethod expects it to be a "object" type.
So I copied the "ManagementBaseObject policyObj" into a "object tempObj" by
tempObj = policyObj.Clone();

And now instead of doing,
tinParams["LoadBalancePolicy"] = (ManagementBaseObject)policyObj;

I did,
tinParams["LoadBalancePolicy"] = checkObj;

This works fine.

Regards,
DJ.

applying c# security

ccitt8-May-07 9:32

ccitt

8-May-07 9:32

Greets all

Can anyone tell me how to apply the SeDenyInteractiveLogonRight right to an account in C#, preferably using the DirectoryEntry class?

Thanks

ccitt

r_jaz8-May-07 9:28

r_jaz

8-May-07 9:28

Hi every one,

I have some questions in c# and i'd appreciate any help with this concern.

1)I can't find the splash screen option in the properties of the project and i could'nt add it from add new item dialog box, so how can i add a splash screen??

2)I need to have a database (ms access) in my application, how can i create the setup for my application that includes the database and other resources such as some .swf files??

3) can i convert an image (say .jpeg) to an icon (.ico) using the Icon class?? How??

Thanks in advance to all..

Re: splashScreen, .exe and con class

MatrixCoder8-May-07 9:59

MatrixCoder

8-May-07 9:59

r_jaz wrote:
1)I can't find the splash screen option in the properties of the project and i could'nt add it from add new item dialog box, so how can i add a splash screen??

In C#, you have to create a splash screen out of a form, then call it as the startup form.

r_jaz wrote:
3) can i convert an image (say .jpeg) to an icon (.ico) using the Icon class?? How??

Just use a bitmap and save it in an icon format, like so:

Bitmap bmp;
bmp = new Bitmap(@"C:\Image.png");
bmp.Save(@"C:\Icon.ico", System.Drawing.Imaging.ImageFormat.Bmp);

Trinity: Neo... nobody has ever done this before.
Neo: That's why it's going to work.

Re: splashScreen, .exe and con class

AFSEKI8-May-07 23:05

AFSEKI

8-May-07 23:05

2- Create a new Setup and Deployment -> Setup Project from the File->New->Proect and create your folders, choose what to add into your folders.

NOTE: Better if you use Sql Server Express Edition 2005 (free and better than MS Access)

how to creat a setup file

kanth_2ma28-May-07 9:18

kanth_2ma2

8-May-07 9:18

hi i done a windowns application with msaccess as database

i want to create a set up file how can i create set up file in .net 2003

i want to install all files at perticular location in harddisk

srikanth_2ma2

Re: how to creat a setup file

PIEBALDconsult8-May-07 9:43

PIEBALDconsult

8-May-07 9:43

File|Add|New
Expand "Other Project Types"
Select "Setup and Deployment"
Select "Setup Project"
Give it a name, click OK

USB (removable) drives in listbox

simplicitylabs8-May-07 9:12

8-May-07 9:12

I tried this:

  <br />
System.IO.DriveInfo[] allDrives = DriveInfo.GetDrives();<br />
<br />
foreach (DriveInfo d in allDrives)<br />
   {<br />
     if (d.IsReady == true & d.DriveType == "Removable")<br />
     {<br />
         listBox1.Items.Add(d.Name);<br />
     }<br />
}<br />

...and it did not work.

I'm getting a headache. How do I accomplish what I'm trying to do?

nateraaaa8-May-07 9:23

nateraaaa

8-May-07 9:23

What type of error did you receive? Your if statement is incorrect. Your if statement should contain && not &. This may be a typo but add another & and see what happens.

Nathan

MatrixCoder8-May-07 9:45

MatrixCoder

8-May-07 9:45

Try replacing d.DriveType == "Removable" with d.DriveType == System.IO.DriveType.Removable.

Trinity: Neo... nobody has ever done this before.
Neo: That's why it's going to work.

simplicitylabs8-May-07 10:19

8-May-07 10:19

Thanks a bunch, guys. The world's easiest way to list all USB drives on the system...This worked:

System.IO.DriveInfo[] allDrives = System.IO.DriveInfo.GetDrives();

foreach (System.IO.DriveInfo d in allDrives)
{
    if (d.IsReady == true && d.DriveType == System.IO.DriveType.Removable)
    {
        listBox1.Items.Add(d.Name);
    }
}

Ok. Now that we have that worked out. Let me say this: I have this code in "form1.designer.cs", which I know is incorrect. How do I get it where it belongs (in form1.cs) and have it work right? I put it in there previously, and it didn't work.

MatrixCoder8-May-07 10:40

MatrixCoder

8-May-07 10:40

simplicitylabs wrote:
I put it in there previously, and it didn't work.

It works fine for me. Was there an error message?

Trinity: Neo... nobody has ever done this before.
Neo: That's why it's going to work.

simplicitylabs8-May-07 12:06

8-May-07 12:06

Oh, it compiles and runs nicely. However, because I have it in form1.designer.cs, which is automatically generated by the designer, and not form1.cs, I get a warning and cannot view the form in design mode:

-------The warning-------
The code within the method 'InitializeComponent' is generated by the designer and should not be manually modified. Please remove any changes and try opening the designer again.
-------------------------

I'm using Visual Studio 2005.

simplicitylabs8-May-07 12:16

8-May-07 12:16

I got it. Thank you for your help, everyone. I'm sure I'll be back with more questions soon.