Bagikan melalui

PersistChildrenAttribute.UsesCustomPersistence Properti

  • Referensi

Definisi

Ruang nama:
System.Web.UI
Rakitan:
System.Web.dll

Mendapatkan nilai yang menunjukkan apakah kontrol server memberikan persistensi kustom kontrol berlapis pada waktu desain.

public:
 property bool UsesCustomPersistence { bool get(); };
public bool UsesCustomPersistence { get; }
member this.UsesCustomPersistence : bool
Public ReadOnly Property UsesCustomPersistence As Boolean

Nilai Properti

Boolean

true untuk memberikan persistensi kustom konten berlapis; jika tidak, false. Default adalah false.

Contoh

Contoh kode berikut menunjukkan cara mendapatkan nilai UsesCustomPersistence properti .

Contoh kode ini adalah bagian dari contoh yang lebih besar yang disediakan untuk PersistChildrenAttribute kelas .

<%@ Page Language="C#" %>
<%@ Register TagPrefix="AspSample" Assembly="Samples.AspNet.CS.Controls" Namespace="PersistChildrenSamples" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
  
  protected void Page_Load(object sender, EventArgs e)
  {

    // Create two new employees and add them to the custom control.
    Employee e1 = new Employee("Employee 1", "Title 1", "Alias 1");
    Employee e2 = new Employee("Employee 2", "Title 2", "Alias 2");
    CollectionPropertyControl1.Employees.Add(e1);
    CollectionPropertyControl1.Employees.Add(e2);

    // Verify attribute values.
    PersistChildrenAttribute p =
      (PersistChildrenAttribute)Attribute.GetCustomAttribute(typeof(CollectionPropertyControl), 
      typeof(PersistChildrenAttribute));

    StringBuilder sb = new StringBuilder();
    sb.Append("The Persist property is " + p.Persist.ToString() + "<br />");
    sb.Append("The UseCustomPersistence property is " + p.UsesCustomPersistence.ToString() + "<br />");
    sb.Append("The IsDefault method returns " + p.IsDefaultAttribute().ToString());
    Message.Text = sb.ToString();
    
  }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>PersistChildrenAttribute</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:Label ID="Message"
                 runat="server"/>
      <AspSample:CollectionPropertyControl id="CollectionPropertyControl1" 
                                           runat="server">
      </AspSample:CollectionPropertyControl>
    </div>
    </form>
</body>
</html>

<%@ Page Language="VB" %>
<%@ Register TagPrefix="AspSample" Assembly="Samples.AspNet.VB.Controls" Namespace="PersistChildrenSampleVB" %>


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
  
  Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)

    ' Create two new employees and add them to the custom control.
    Dim e1 As New Employee("Employee 1", "Title 1", "Alias 1")
    Dim e2 As New Employee("Employee 2", "Title 2", "Alias 2")
    CollectionPropertyControl1.Employees.Add(e1)
    CollectionPropertyControl1.Employees.Add(e2)

    ' Verify attribute values.
    Dim p As PersistChildrenAttribute = _
    Attribute.GetCustomAttribute(GetType(CollectionPropertyControl), _
    GetType(PersistChildrenAttribute))

    Dim sb As New StringBuilder()
    sb.Append("The Persist property is " & p.Persist.ToString() & "<br />")
    sb.Append("The UseCustomPersistence property is " & p.UsesCustomPersistence.ToString() & "<br />")
    sb.Append("The IsDefault method returns " & p.IsDefaultAttribute().ToString())
    Message.Text = sb.ToString()

  End Sub
  
</script>


<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>PersistChildrenAttribute</title>
</head>
<body>
    <form id="Form1" runat="server">
    <div>
      <asp:Label ID="Message"
                 runat="server"/>
      <AspSample:CollectionPropertyControl id="CollectionPropertyControl1" 
                                           runat="server">
      </AspSample:CollectionPropertyControl>
    </div>
    </form>
</body>
</html>

Keterangan

Untuk mengonfigurasi konten berlapis untuk persistensi kustom, gunakan PersistChildrenAttribute kelebihan beban yang mengambil usesCustomPersistence parameter.

Berlaku untuk

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