WqlEventQuery.QueryString 属性

定义

命名空间:

System.Management

程序集:

System.Management.dll

包:

System.Management v8.0.0

Source:

ManagementQuery.cs

获取或设置表示查询的字符串。

public:
 virtual property System::String ^ QueryString { System::String ^ get(); void set(System::String ^ value); };

public override string QueryString { get; set; }

member this.QueryString : string with get, set

Public Overrides Property QueryString As String

属性值

String

返回一个包含查询的 String 值。

示例

以下示例初始化一个新的 WqlEventQuery 并显示事件查询字符串。

using System;
using System.Management;

public class EventSample
{
    public static void Main(string[] args)
    {
        WqlEventQuery query = new WqlEventQuery();
        query.EventClassName = "__InstanceCreationEvent";
        query.Condition = "TargetInstance ISA 'Win32_NTLogEvent'";
        query.GroupWithinInterval = new TimeSpan(0, 0, 10);
        System.Collections.Specialized.StringCollection collection =
            new System.Collections.Specialized.StringCollection();
        collection.Add("TargetInstance.SourceName");
        query.GroupByPropertyList = collection;
        query.HavingCondition = "NumberOfEvents > 25";

        Console.WriteLine(query.QueryString);
        return;
    }
}

Imports System.Management


Public Class EventSample
    Public Overloads Shared Function _
        Main(ByVal args() As String) As Integer

        Dim query As New WqlEventQuery
        query.EventClassName = "__InstanceCreationEvent"
        query.Condition = "TargetInstance ISA 'Win32_NTLogEvent'"
        query.GroupWithinInterval = New TimeSpan(0, 0, 10)
        Dim collection As New System.Collections.Specialized. _
            StringCollection
        collection.Add("TargetInstance.SourceName")
        query.GroupByPropertyList = collection
        query.HavingCondition = "NumberOfEvents > 25"

        MessageBox.Show(query.QueryString)

    End Function 'Main
End Class

注解

属性值

表示查询的字符串。

.NET Framework 安全性

对直接调用方的完全信任。 此成员不能由部分信任的代码使用。 有关详细信息，请参阅 使用部分受信任的代码中的库。