如何处理WMI的管理异常

本文关键字：WMI 管理 异常 处理 何处理 | 更新日期: 2023-09-27 18:08:05

我正在使用WMI读取处理器的详细信息WIN32_PROCESSOR。目前我正试图读取这些属性:SELECT CAPTION,L2CACHESIZE,L3CACHESIZE FROM WIN32_PROCESSOR。这样我就可以使用下面的代码:

static void Main(string[] args)
{
    string strQuery = "SELECT CAPTION,L2CACHESIZE,L3CACHESIZE FROM WIN32_PROCESSOR";
    string strIPAddress = "XXX.XXX.X.XXX";
    DataTable dtProcessor = new DataTable();
    dtProcessor.Columns.Add("CAPTION");
    dtProcessor.Columns.Add("L2CACHESIZE");
    dtProcessor.Columns.Add("L3CACHESIZE");            
    ManagementScope scope = new ManagementScope(@"''" + strIPAddress + @"'root'cimv2");
    SelectQuery query = new SelectQuery();
    query.QueryString = strQuery;
    ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query);
    ManagementObjectCollection queryCollection = searcher.Get();
    foreach (ManagementObject mngmntObj in queryCollection)
    {
        DataRow dr = dtProcessor.NewRow();
        dr["CAPTION"] = mngmntObj["CAPTION"];
        dr["L2CACHESIZE"] = mngmntObj["L2CACHESIZE"];
        dr["L3CACHESIZE"] = mngmntObj["L3CACHESIZE"];
        dtProcessor.Rows.Add(dr);
    }
}

这在我的Windows Server 2008R2机器上工作得很好，但是相同的代码给了我System.Management.ManagementException -> Invalid Query的例外，因为L3CACHESIZE不存在于XP中，如这里所讨论的。如何处理读取当前值的问题?

如何处理WMI的管理异常

如果您想要检查是否存在wmi属性，您可以使用ManagementBaseObject.Properties属性并遍历集合。

试试这样

static void Main(string[] args)
{
    string strQuery = "SELECT * FROM WIN32_PROCESSOR";
    string strIPAddress = "XXX.XXX.X.XXX";
    DataTable dtProcessor = new DataTable();
    dtProcessor.Columns.Add("CAPTION");
    dtProcessor.Columns.Add("L2CACHESIZE");
    dtProcessor.Columns.Add("L3CACHESIZE");            
    ManagementScope scope = new ManagementScope(@"''" + strIPAddress + @"'root'cimv2");
    SelectQuery query = new SelectQuery();
    query.QueryString = strQuery;
    ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query);
    ManagementObjectCollection queryCollection = searcher.Get();
    List<string> properties = new List<string>();
    foreach (ManagementObject mngmntObj in queryCollection)
    {
       if (properties.Count==0)
       {
         foreach (PropertyData property in mngmntObj.Properties)
         properties.Add(property.Name);
       }
        DataRow dr = dtProcessor.NewRow();
        dr["CAPTION"] = mngmntObj["CAPTION"];
        dr["L2CACHESIZE"] = mngmntObj["L2CACHESIZE"];
        if (properties.Contains("L3CACHESIZE", StringComparer.OrdinalIgnoreCase))
        {
        dr["L3CACHESIZE"] = mngmntObj["L3CACHESIZE"];
        }
        dtProcessor.Rows.Add(dr);
    }
}

对于这种特殊情况，如果你想获得与内存缓存相关的信息，请尝试win32_cachemmemory类

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