Membership.FindUsersByEmail 方法

定義

命名空間:: System.Web.Security

組件:: System.Web.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

獲得一組會員用戶，電子郵件地址包含指定的電子郵件地址以匹配。

多載

名稱	Description
FindUsersByEmail(String, Int32, Int32, Int32)	會取得一組會員用戶，在一頁資料中，電子郵件地址包含指定的電子郵件地址以匹配。
FindUsersByEmail(String)	獲得一組會員用戶，電子郵件地址包含指定的電子郵件地址以匹配。

FindUsersByEmail(String, Int32, Int32, Int32)

會取得一組會員用戶，在一頁資料中，電子郵件地址包含指定的電子郵件地址以匹配。

public:
 static System::Web::Security::MembershipUserCollection ^ FindUsersByEmail(System::String ^ emailToMatch, int pageIndex, int pageSize, [Runtime::InteropServices::Out] int % totalRecords);

public static System.Web.Security.MembershipUserCollection FindUsersByEmail(string emailToMatch, int pageIndex, int pageSize, out int totalRecords);

static member FindUsersByEmail : string * int * int * int -> System.Web.Security.MembershipUserCollection

Public Shared Function FindUsersByEmail (emailToMatch As String, pageIndex As Integer, pageSize As Integer, ByRef totalRecords As Integer) As MembershipUserCollection

參數

emailToMatch: String

要搜尋的電子郵件地址。

pageIndex: Int32

結果頁面的索引將返回。 pageIndex 以零為起始。

pageSize: Int32

結果頁面的大小。

totalRecords: Int32

配對的總數。

傳回

MembershipUserCollection

A MembershipUserCollection 包含從指定的pageSize頁面開始的物件頁面MembershipUserpageIndex。

例外狀況

ArgumentException

pageIndex 小於零。

-或-

pageSize 小於1。

範例

以下程式碼範例使用此 FindUsersByEmail 方法，根據使用者輸入從會員資料庫中擷取會員使用者資訊，並以頁面資料形式呈現結果。

Important

此範例包含一個接受使用者輸入的文字框，這可能構成安全威脅。預設情況下，ASP.NET 網頁會驗證使用者輸入中不包含腳本或 HTML 元素。欲了解更多資訊，請參閱腳本漏洞概述。

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Web.Security" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

int pageSize = 5;
int totalUsers;
int totalPages;
int currentPage = 1;

private void GetUsers()
{
  UserGrid.DataSource = Membership.FindUsersByEmail(EmailTextBox.Text, 
                          currentPage - 1, pageSize, out totalUsers);
  totalPages = ((totalUsers - 1) / pageSize) + 1;

  // Ensure that we do not navigate past the last page of users.

  if (currentPage > totalPages)
  {
    currentPage = totalPages;
    GetUsers();
    return;
  }

  UserGrid.DataBind();
  CurrentPageLabel.Text = currentPage.ToString();
  TotalPagesLabel.Text = totalPages.ToString();

  if (currentPage == totalPages)
    NextButton.Visible = false;
  else
    NextButton.Visible = true;

  if (currentPage == 1)
    PreviousButton.Visible = false;
  else
    PreviousButton.Visible = true;

  if (totalUsers <= 0)
    NavigationPanel.Visible = false;
  else
    NavigationPanel.Visible = true;
}

public void NextButton_OnClick(object sender, EventArgs args)
{
  currentPage = Convert.ToInt32(CurrentPageLabel.Text);
  currentPage++;
  GetUsers();
}

public void PreviousButton_OnClick(object sender, EventArgs args)
{
  currentPage = Convert.ToInt32(CurrentPageLabel.Text);
  currentPage--;
  GetUsers();
}

public void GoButton_OnClick(object sender, EventArgs args)
{
  currentPage = 1;
  GetUsers();
}

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Sample: Find Users by Email</title>
</head>
<body>

<form id="form1" runat="server">
  <h3>User List</h3>

  Email address to Search for: 
    <asp:TextBox id="EmailTextBox" runat="server" />
    <asp:Button id="GoButton" Text=" Go " OnClick="GoButton_OnClick" runat="server" /><br />

  <asp:Panel id="NavigationPanel" Visible="false" runat="server">
    <table border="0" cellpadding="3" cellspacing="3">
      <tr>
        <td style="width:100">Page <asp:Label id="CurrentPageLabel" runat="server" />
            of <asp:Label id="TotalPagesLabel" runat="server" /></td>
        <td style="width:60"><asp:LinkButton id="PreviousButton" Text="< Prev"
                            OnClick="PreviousButton_OnClick" runat="server" /></td>
        <td style="width:60"><asp:LinkButton id="NextButton" Text="Next >"
                            OnClick="NextButton_OnClick" runat="server" /></td>
      </tr>
    </table>
  </asp:Panel>

  <asp:DataGrid id="UserGrid" runat="server"
                CellPadding="2" CellSpacing="1"
                Gridlines="Both">
    <HeaderStyle BackColor="darkblue" ForeColor="white" />
  </asp:DataGrid>

</form>

</body>
</html>

<%@ Page Language="VB" %>
<%@ Import Namespace="System.Web.Security" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

Dim pageSize As Integer = 5
Dim totalUsers As Integer
Dim totalPages As Integer
Dim currentPage As Integer = 1

Private Sub GetUsers()
  UserGrid.DataSource = Membership.FindUsersByEmail(EmailTextBox.Text, _
                          currentPage - 1, pageSize, totalUsers)

  totalPages = ((totalUsers - 1) \ pageSize) + 1

  ' Ensure that we do not navigate past the last page of users.

  If currentPage > totalPages Then
    currentPage = totalPages
    GetUsers()
    Return
  End If

  UserGrid.DataBind()
  CurrentPageLabel.Text = currentPage.ToString()
  TotalPagesLabel.Text = totalPages.ToString()

  If currentPage = totalPages Then
    NextButton.Visible = False
  Else
    NextButton.Visible = True
  End If

  If currentPage = 1 Then
    PreviousButton.Visible = False
  Else
    PreviousButton.Visible = True
  End If

  If totalUsers <= 0 Then
    NavigationPanel.Visible = False
  Else
    NavigationPanel.Visible = True
  End If
End Sub

Public Sub NextButton_OnClick(sender As Object, args As EventArgs)
  currentPage = Convert.ToInt32(CurrentPageLabel.Text)
  currentPage += 1
  GetUsers()
End Sub

Public Sub PreviousButton_OnClick(sender As Object, args As EventArgs)
  currentPage = Convert.ToInt32(CurrentPageLabel.Text)
  currentPage -= 1
  GetUsers()
End Sub

Public Sub GoButton_OnClick(sender As Object, args As EventArgs)
  currentPage = 1
  GetUsers()
End Sub

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Sample: Find Users by Email</title>
</head>
<body>

<form id="form1" runat="server">
  <h3>User List</h3>

  Email address to Search for: 
    <asp:TextBox id="EmailTextBox" runat="server" />
    <asp:Button id="GoButton" Text=" Go " OnClick="GoButton_OnClick" runat="server" /><br />

  <asp:Panel id="NavigationPanel" Visible="False" runat="server">
    <table border="0" cellpadding="3" cellspacing="3">
      <tr>
        <td style="width:100">Page <asp:Label id="CurrentPageLabel" runat="server" />
            of <asp:Label id="TotalPagesLabel" runat="server" /></td>
        <td style="width:60"><asp:LinkButton id="PreviousButton" Text="< Prev"
                            OnClick="PreviousButton_OnClick" runat="server" /></td>
        <td style="width:60"><asp:LinkButton id="NextButton" Text="Next >"
                            OnClick="NextButton_OnClick" runat="server" /></td>
      </tr>
    </table>
  </asp:Panel>

  <asp:DataGrid id="UserGrid" runat="server"
                CellPadding="2" CellSpacing="1"
                Gridlines="Both">
    <HeaderStyle BackColor="darkblue" ForeColor="white" />
  </asp:DataGrid>

</form>

</body>
</html>

備註

FindUsersByEmail回傳一份會員用戶名單，電子郵件地址與所提供emailToMatchapplicationName者相符。

該會 SqlMembershipProvider 利用 LIKE 子句對 emailToMatch 參數進行搜尋。任何由 LIKE 子句中 SQL Server 支援的萬用字元，都可以用在 emailToMatch 參數值中。

所 FindUsersByEmail 回傳的結果受限 pageIndex 於和 pageSize 參數。參數pageSize識別應回傳MembershipUser的最大物件數量MembershipUserCollection。參數 pageIndex 用來指示要回傳哪一頁結果，其中 0 代表第一頁。參數 totalRecords 設定 out 為與該值匹配 emailToMatch 的會員用戶總數。例如，若發現 13 位使用者與 emailToMatch 部分或全部電子郵件地址匹配，且 pageIndex 值為 1，且 a pageSize 為 5，則回傳的郵件 MembershipUserCollection 將包含第六至第十位回傳的使用者。 totalRecords 會設定為13。

參數值中會裁掉 emailToMatch 前置與後置空格。

另請參閱

ASP.NET 會員介紹

適用於

FindUsersByEmail(String)