以程式設計方式存取 WMI 提供者

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WMI 提供者概觀

用來取得本文所示程式碼範例中 Reporting Services 相關資訊的命名空間是 Microsoft .NET Framework 中找到的 System.Management 命名空間。 System.Management 命名空間提供一組 Managed 程式碼類別，.NET Framework 應用程式可以透過這些類別來存取和操作管理資訊。 如需搭配 System.Management 命名空間使用 Reporting Services WMI 類別 的詳細資訊，請參閱 Microsoft .NET Framework SDK 中的。

尋找報表伺服器實例

在報表伺服器安裝上尋找資訊的最好方法，就是列舉 WMI 執行個體集合。 下列範例示範如何藉由建立集合來尋找每個報表伺服器實例上的屬性，並迴圈查看集合以顯示內容。

Imports System  
Imports System.Management  
Imports System.IO  
  
Module Module1  
    Sub Main()  
        Const WmiNamespace As String = "\\<ServerName>\root\Microsoft\SqlServer\ReportServer\<InstanceName>\v10\Admin"  
        Const WmiRSClass As String = _  
           "\\<ServerName>\root\Microsoft\SqlServer\ReportServer\<InstanceName>\v13\admin:MSReportServer_ConfigurationSetting"  
  
        Dim serverClass As ManagementClass  
        Dim scope As ManagementScope  
        scope = New ManagementScope(WmiNamespace)  
        'Connect to the Reporting Services namespace.  
        scope.Connect()  
  
        'Create the server class.  
        serverClass = New ManagementClass(WmiRSClass)  
        'Connect to the management object.  
        serverClass.Get()  
        If serverClass Is Nothing Then Throw New Exception("No class found")  
  
        'Loop through the instances of the server class.  
        Dim instances As ManagementObjectCollection = serverClass.GetInstances()  
        Dim instance As ManagementObject  
        For Each instance In instances  
            Console.Out.WriteLine("Instance Detected")  
            Dim instProps As PropertyDataCollection = instance.Properties  
            Dim prop As PropertyData  
            For Each prop In instProps  
                Dim name As String = prop.Name  
                Dim val As Object = prop.Value  
                Console.Out.Write("Property Name: " + name)  
                If val Is Nothing Then  
                    Console.Out.WriteLine("     Value: <null>")  
                Else  
                    Console.Out.WriteLine("     Value: " + val.ToString())  
                End If  
            Next  
        Next  
  
        Console.WriteLine("--- Press any key ---")  
        Console.ReadKey()  
  
    End Sub  
End Module  

using System;  
using System.Management;  
using System.IO;  
[assembly: CLSCompliant(true)]  
  
class Class1  
{  
    [STAThread]  
    static void Main(string[] args)  
    {  
        const string WmiNamespace = @"\\<ServerName>\root\Microsoft\SqlServer\ReportServer\<InstanceName>\v10\Admin";  
        const string WmiRSClass =  
          @"\\<ServerName>\root\Microsoft\SqlServer\ReportServer\<InstanceName>\v13\admin:MSReportServer_ConfigurationSetting";  
        ManagementClass serverClass;  
        ManagementScope scope;  
        scope = new ManagementScope(WmiNamespace);  
  
        // Connect to the Reporting Services namespace.  
        scope.Connect();  
        // Create the server class.  
        serverClass = new ManagementClass(WmiRSClass);  
        // Connect to the management object.  
        serverClass.Get();  
        if (serverClass == null)  
            throw new Exception("No class found");  
  
        // Loop through the instances of the server class.  
        ManagementObjectCollection instances = serverClass.GetInstances();  
  
        foreach (ManagementObject instance in instances)  
        {  
            Console.Out.WriteLine("Instance Detected");  
            PropertyDataCollection instProps = instance.Properties;  
            foreach (PropertyData prop in instProps)  
            {  
                string name = prop.Name;  
                object val = prop.Value;  
                Console.Out.Write("Property Name: " + name);  
                if (val != null)  
                    Console.Out.WriteLine("     Value: " + val.ToString());  
                else  
                    Console.Out.WriteLine("     Value: <null>");  
            }  
        }  
        Console.WriteLine("\n--- Press any key ---");  
        Console.ReadKey();  
    }  
}

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