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PostBackOptions.ValidationGroup Properti

Definisi

Mendapatkan atau mengatur grup kontrol yang PostBackOptions objeknya menyebabkan validasi ketika memposting kembali ke server.

public:
 property System::String ^ ValidationGroup { System::String ^ get(); void set(System::String ^ value); };
public string ValidationGroup { get; set; }
member this.ValidationGroup : string with get, set
Public Property ValidationGroup As String

Nilai Properti

Grup kontrol yang PostBackOptions objeknya menyebabkan validasi ketika memposting kembali ke server. Nilai default adalah string kosong ("").

Contoh

Contoh kode berikut menunjukkan penggunaan ValidationGroup properti dan PerformValidation untuk memastikan bahwa dua TextBox kontrol memiliki informasi yang dimasukkan di dalamnya sebelum peristiwa postback dibuat. Kontrol NameTextBox dan AgeTextBox adalah bagian PersonalInfoGroup dari grup validasi, tetapi StateTextBox kontrolnya tidak. Oleh karena itu, pengguna tidak perlu memasukkan data apa pun dalam StateTextBox kontrol sebelum peristiwa postback dibuat.

Penting

Contoh ini memiliki kotak teks yang menerima input pengguna, yang merupakan potensi ancaman keamanan. Secara default, ASP.NET halaman Web memvalidasi bahwa input pengguna tidak menyertakan elemen skrip atau HTML. Untuk informasi selengkapnya, lihat Gambaran Umum Eksploitasi Skrip.

<%@ Page Language="C#" %>

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

<script runat="server">

  void Page_Init(object sender, EventArgs e)
  {
    PostBackOptions myPostBackOptions = new PostBackOptions(FruitRadioButtonList);

    myPostBackOptions.RequiresJavaScriptProtocol = true;
    myPostBackOptions.PerformValidation = true;
    myPostBackOptions.ValidationGroup = "PersonalInfoGroup";

    string reference = Page.ClientScript.GetPostBackEventReference(myPostBackOptions);
    FruitRadioButtonList.Attributes.Add("onclick", reference);
  } 

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>PerformValidation and ValidationGroup Example</title>
  </head>
  <body>
    <form id="form1" runat="server">
      <h3>PostBackOptions PerformValidation and ValidationGroup Example</h3>
      
      <asp:label id="NameLabel" 
        text="Enter your name:"
        runat="server"
        AssociatedControlID="NameTextBox">
      </asp:label>

      &nbsp
      
      <asp:textbox id="NameTextBox" 
        runat="server">
      </asp:textbox>

      &nbsp

      <asp:requiredfieldvalidator id="RequiredFieldValidator1"
        controltovalidate="NameTextBox"
        validationgroup="PersonalInfoGroup"
        errormessage="Enter your name."
        runat="server">
      </asp:requiredfieldvalidator>
      
      <br /><br />
      
      <asp:label id="AgeLabel" 
        text="Enter your age:"
        runat="server"
        AssociatedControlID="AgeTextBox">
      </asp:label>

      &nbsp
      
      <asp:textbox id="AgeTextBox" 
        runat="server">
      </asp:textbox>

      &nbsp

      <asp:requiredfieldvalidator id="RequiredFieldValidator2"
        controltovalidate="AgeTextBox"
        validationgroup="PersonalInfoGroup"
        errormessage="Enter your age."
        runat="server">
      </asp:requiredfieldvalidator>
      
      <br /><br />
      
      <asp:label id="State" 
        text="Enter the state where you live:"
        runat="server"
        AssociatedControlID="StateTextBox">
      </asp:label>

      &nbsp
      
      <asp:textbox id="StateTextBox" 
        runat="server">
      </asp:textbox>

      &nbsp
      
      <br /><br />
    
    
      <asp:Label id="FruitLabel" 
        text="Please select your preferred fruit:" 
        runat="server"
        AssociatedControlID="FruitRadioButtonList">
      </asp:Label>
      
      <asp:RadioButtonList ID="FruitRadioButtonList" runat="server" >
        <asp:ListItem>Apples</asp:ListItem>
        <asp:ListItem>Oranges</asp:ListItem>
        <asp:ListItem>Pears</asp:ListItem>
        <asp:ListItem>Peaches</asp:ListItem>
        <asp:ListItem>Grapes</asp:ListItem>
        <asp:ListItem>Lemons</asp:ListItem>
        <asp:ListItem>Limes</asp:ListItem>
        <asp:ListItem>Plums</asp:ListItem>
      </asp:RadioButtonList>
      
    </form>
  </body>
</html>
<%@ Page Language="VB" %>

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

<script runat="server">
  
  Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs)
  
    Dim myPostBackOptions As PostBackOptions = New PostBackOptions(FruitRadioButtonList)

    myPostBackOptions.RequiresJavaScriptProtocol = True
    myPostBackOptions.PerformValidation = True
    myPostBackOptions.ValidationGroup = "PersonalInfoGroup"

    Dim reference As String = Page.ClientScript.GetPostBackEventReference(myPostBackOptions)
    FruitRadioButtonList.Attributes.Add("onclick", reference)
    
  End Sub


</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>PerformValidation and ValidationGroup Example</title>
  </head>
  <body>
    <form id="form1" runat="server">
      <h3>PostBackOptions PerformValidation and ValidationGroup Example</h3>
      
      <asp:label id="NameLabel" 
        text="Enter your name:"
        runat="server"
        AssociatedControlID="NameTextBox">
      </asp:label>

      &nbsp
      
      <asp:textbox id="NameTextBox" 
        runat="server">
      </asp:textbox>

      &nbsp

      <asp:requiredfieldvalidator id="RequiredFieldValidator1"
        controltovalidate="NameTextBox"
        validationgroup="PersonalInfoGroup"
        errormessage="Enter your name."
        runat="server">
      </asp:requiredfieldvalidator>
      
      <br /><br />
      
      <asp:label id="AgeLabel" 
        text="Enter your age:"
        runat="server"
        AssociatedControlID="AgeTextBox">
      </asp:label>

      &nbsp
      
      <asp:textbox id="AgeTextBox" 
        runat="server">
      </asp:textbox>

      &nbsp

      <asp:requiredfieldvalidator id="RequiredFieldValidator2"
        controltovalidate="AgeTextBox"
        validationgroup="PersonalInfoGroup"
        errormessage="Enter your age."
        runat="server">
      </asp:requiredfieldvalidator>
      
      <br /><br />
      
      <asp:label id="State" 
        text="Enter the state where you live:"
        runat="server"
        AssociatedControlID="State">
      </asp:label>

      &nbsp
      
      <asp:textbox id="StateTextBox" 
        runat="server">
      </asp:textbox>

      &nbsp
      
      <br /><br />
    
    
      <asp:Label id="FruitLabel" 
        text="Please select your preferred fruit:" 
        runat="server"
        AssociatedControlID="FruitRadioButtonList">
      </asp:Label>
      
      <asp:RadioButtonList ID="FruitRadioButtonList" runat="server" >
        <asp:ListItem>Apples</asp:ListItem>
        <asp:ListItem>Oranges</asp:ListItem>
        <asp:ListItem>Pears</asp:ListItem>
        <asp:ListItem>Peaches</asp:ListItem>
        <asp:ListItem>Grapes</asp:ListItem>
        <asp:ListItem>Lemons</asp:ListItem>
        <asp:ListItem>Limes</asp:ListItem>
        <asp:ListItem>Plums</asp:ListItem>
      </asp:RadioButtonList>
      
    </form>
  </body>
</html>

Keterangan

ValidationGroup Gunakan properti untuk menentukan grup validasi untuk memvalidasi saat peristiwa postback dibuat. Hanya kontrol validasi dalam grup validasi yang ditentukan yang divalidasi.

Berlaku untuk

Lihat juga