Invoking a WMI method on a Remote Machine

[bbranded]

Hello, I am attempting to invoke the GetVersionVector method of the DfsrReplicatedFolderInfo on a remote machine. After referring to two articles (1, 2) about the subject on InvokeMethod in C#, I have written the following code: string TargetMachine = textBox2.Text; System.Management.ManagementScope oMs = new System.Management.ManagementScope("\\\\" + TargetMachine + "\\root\\microsoftdfs"); oMs.Connect(); System.Management.ObjectQuery oQuery = new System.Management.ObjectQuery("SELECT * FROM DfsrReplicatedFolderInfo"); //WHERE ReplicationGroupName='" + comboBox6.Text + "'"); ManagementObjectSearcher oSearcher = new ManagementObjectSearcher(oMs, oQuery); ManagementObjectCollection MgmtObject = oSearcher.Get(); foreach (ManagementObject item in MgmtObject) { //Get an input parameters object for this method //ManagementBaseObject inParams = item.GetMethodParameters("GetVersionVector"); //Fill in input parameter values //inParams["CommandLine"] = "calc.exe"; //Execute the method ManagementObject outParams = (ManagementObject)item.InvokeMethod("GetVersionVector", null); //Display results //Note: The return code of the method is provided in the "returnValue" property of the outParams object MessageBox.Show(outParams.ToString()); } When attempting to InvokeMethod, the following error is thrown: Object reference not set to an instance of an object. If I do away with the cast and use declare outParams as an object instead, i get the same error. Any input is appreciated, Matt Brown

[bbranded]

Here's the solution.... Tweak query as desired...

private void button7_Click(object sender, EventArgs e)
{

        string TargetMachine = textBox2.Text;



        ManagementPath path = new ManagementPath("\\\\\\\\" + TargetMachine + "\\\\root\\\\microsoftdfs");

        ManagementScope scope = new ManagementScope(path);
        
        SelectQuery msQuery = new SelectQuery("SELECT \* FROM DfsrReplicatedFolderInfo");

        ManagementObjectSearcher searchProcedure = new ManagementObjectSearcher(scope, msQuery);

        
        
        object\[\] methodArgs = { "" };
        

        foreach (ManagementObject item in searchProcedure.Get())
        {
            try
            {
                item.InvokeMethod("GetVersionVector", methodArgs);
                
                foreach (string returned in methodArgs)
                {
                    MessageBox.Show(returned.ToString());
                }
            }

            catch (SystemException excep)
            {
                MessageBox.Show(excep.Message);
            }

        }
    }