SPAlertCollection.Item property (Guid)

從集合中取得指定之 GUID 的警示。在 C# 中，這個屬性會是SPAlertCollection類別的索引子。

Namespace:  Microsoft.SharePoint
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)

Syntax

'宣告
Public ReadOnly Default Property Item ( _
    idAlert As Guid _
) As SPAlert
    Get
'用途
Dim instance As SPAlertCollection
Dim idAlert As Guid
Dim value As SPAlert

value = instance(idAlert)

public SPAlert this[
    Guid idAlert
] { get; }

參數

• idAlert
  Type: System.Guid

  識別項目的 GUID。

Property value

Type: Microsoft.SharePoint.SPAlert
Microsoft.SharePoint.SPAlert 物件，表示此警示。

Examples

下列程式碼範例會逐一查看指定的使用者，對站台上的所有警示會產生陣列來儲存每個警示的 GUID，之後再使用每個 GUID 顯示的頻率和每個警示的事件型別。

Dim site As SPSite = SPControl.GetContextSite(Context)
Dim web As SPWeb = site.AllWebs("Site_Name")
Dim alerts As SPAlertCollection = web.Users(TextBox1.Text).Alerts
Dim guids(alerts.Count) As System.Guid
Dim i As Integer

For i = 0 To alerts.Count - 1

    guids.SetValue(alerts(i).ID, i)

Next i

Dim j As Integer

For j = 0 To guids.Length - 1

    Label1.Text += alerts(guids(j)).AlertFrequency + "--" + 
        alerts(guids(j)).EventType + "<BR>"

Next j

SPSite oSite = SPContext.Current.Site;
SPWebCollection collWebsites = oSite.AllWebs;
foreach (SPWeb oWebsite in collWebsites)
{
    SPAlertCollection collAlerts = oWebsite.Alerts;

    foreach (SPAlert oAlert in collAlerts)
    {
        Label1.Text = SPEncode.HtmlEncode(oWebsite.Title) + " :: " +
            SPEncode.HtmlEncode(oAlert.Title) + " :: " +
        oAlert.User.LoginName + "<BR>";
    }
    oWebsite.Dispose();
}

注意事項
某些物件實作IDisposable介面，並且您必須避免之後不再需要保留這些物件在記憶體中。良好的程式碼撰寫方式的相關資訊，請參閱Disposing Objects。

請參閱

參照

SPAlertCollection class

SPAlertCollection members

Item overload

Microsoft.SharePoint namespace