Membership.GetUser Method

Reference

Definition

Namespace:: System.Web.Security

Assembly:: System.Web.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets the information for a membership user from the data source.

Overloads

GetUser(String, Boolean)	Gets the information from the data source for the specified membership user. Updates the last-activity date/time stamp for the user, if specified.
GetUser(Object, Boolean)	Gets the information from the data source for the membership user associated with the specified unique identifier. Updates the last-activity date/time stamp for the user, if specified.
GetUser(String)	Gets the information from the data source for the specified membership user.
GetUser(Boolean)	Gets the information from the data source for the current logged-on membership user. Updates the last-activity date/time stamp for the current logged-on membership user, if specified.
GetUser()	Gets the information from the data source and updates the last-activity date/time stamp for the current logged-on membership user.
GetUser(Object)	Gets the information from the data source for the membership user associated with the specified unique identifier.

GetUser(String, Boolean)

Gets the information from the data source for the specified membership user. Updates the last-activity date/time stamp for the user, if specified.

public:
 static System::Web::Security::MembershipUser ^ GetUser(System::String ^ username, bool userIsOnline);

public static System.Web.Security.MembershipUser GetUser (string username, bool userIsOnline);

static member GetUser : string * bool -> System.Web.Security.MembershipUser

Public Shared Function GetUser (username As String, userIsOnline As Boolean) As MembershipUser

Parameters

username: String

The name of the user to retrieve.

userIsOnline: Boolean

If true, updates the last-activity date/time stamp for the specified user.

Returns

MembershipUser

A MembershipUser object representing the specified user. If the username parameter does not correspond to an existing user, this method returns null.

Exceptions

ArgumentException

username contains a comma (,).

ArgumentNullException

username is null.

Examples

The following code example retrieves the password for a specified user name and sends it to the email address for the specified user. The call to GetUser specifies that the last-activity date/time stamp for the user not be updated.

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

public void Page_Load(object sender, EventArgs args)
{
  if (!Membership.EnablePasswordRetrieval)
  {
    FormsAuthentication.RedirectToLoginPage();
  }

  Msg.Text = "";

  if (!IsPostBack)
  {
    Msg.Text = "Please enter a user name.";
  }
  else
  {
    VerifyUsername();
  }
}


public void VerifyUsername()
{
    MembershipUser user = Membership.GetUser(UsernameTextBox.Text, false);

    if (user == null)
    {
      Msg.Text = "The user name " + Server.HtmlEncode(UsernameTextBox.Text) + " was not found. Please check the value and re-enter.";

      QuestionLabel.Text = "";
      QuestionLabel.Enabled = false;
      AnswerTextBox.Enabled = false;
      EmailPasswordButton.Enabled = false;
    }
    else
    {
      QuestionLabel.Text = user.PasswordQuestion;
      QuestionLabel.Enabled = true;
      AnswerTextBox.Enabled = true;
      EmailPasswordButton.Enabled = true;
    }
}


public void EmailPassword_OnClick(object sender, EventArgs args)
{
  // Note: Returning a password in clear text using email is not recommended for
  // sites that require a high level of security.

  try
  {
    string password = Membership.Provider.GetPassword(UsernameTextBox.Text, AnswerTextBox.Text);
    MembershipUser u = Membership.GetUser(UsernameTextBox.Text);
    EmailPassword(u.Email, password);
    Msg.Text = "Your password was sent via email.";
  }
  catch (MembershipPasswordException e)
  {
    Msg.Text = "The password answer is incorrect. Please check the value and try again.";
  }
  catch (System.Configuration.Provider.ProviderException e)
  {
    Msg.Text = "An error occurred retrieving your password. Please check your values " +
               "and try again.";
  }
}


private void EmailPassword(string email, string password)
{
  try
  {
    MailMessage Message = new MailMessage("administrator", email);
    Message.Subject = "Your Password";
    Message.Body = "Your password is: " + Server.HtmlEncode(password);

    SmtpClient SmtpMail = new SmtpClient("SMTPSERVER");
    SmtpMail.Send(Message);
  }
  catch 
  {
    Msg.Text = "An exception occurred while sending your password. Please try again.";
  }
}

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Sample: Retrieve Password</title>
</head>
<body>

<form id="form1" runat="server">
  <h3>Retrieve Password</h3>

  <asp:Label id="Msg" runat="server" ForeColor="maroon" /><br />

  Username: <asp:Textbox id="UsernameTextBox" Columns="30" runat="server" AutoPostBack="true" />
            <asp:RequiredFieldValidator id="UsernameRequiredValidator" runat="server"
                                        ControlToValidate="UsernameTextBox" ForeColor="red"
                                        Display="Static" ErrorMessage="Required" /><br />

  Password Question: <b><asp:Label id="QuestionLabel" runat="server" /></b><br />

  Answer: <asp:TextBox id="AnswerTextBox" Columns="60" runat="server" Enabled="false" />
          <asp:RequiredFieldValidator id="AnswerRequiredValidator" runat="server"
                                      ControlToValidate="AnswerTextBox" ForeColor="red"
                                      Display="Static" ErrorMessage="Required" Enabled="false" /><br />

  <asp:Button id="EmailPasswordButton" Text="Email My Password" 
              OnClick="EmailPassword_OnClick" runat="server" Enabled="false" />

</form>

</body>
</html>


<%@ Page Language="VB" %>

<%@ Import Namespace="System.Web.Security" %>
<%@ Import Namespace="System.Net.Mail" %>

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

  Public Sub Page_Load(ByVal sender As Object, ByVal args As EventArgs)

    If Not Membership.EnablePasswordRetrieval Then
      FormsAuthentication.RedirectToLoginPage()
    End If

    Msg.Text = ""

    If Not IsPostBack Then
      Msg.Text = "Please enter a user name."
    Else
      VerifyUsername()
    End If

  End Sub


  Private Sub VerifyUsername()

    Dim user As MembershipUser = Membership.GetUser(UsernameTextBox.Text, False)

    If user Is Nothing Then
      Msg.Text = "The user name " & Server.HtmlEncode(UsernameTextBox.Text) & " was not found. Please check the value and re-enter."

      QuestionLabel.Text = ""
      QuestionLabel.Enabled = False
      AnswerTextBox.Enabled = False
      EmailPasswordButton.Enabled = False
    Else
      QuestionLabel.Text = user.PasswordQuestion
      QuestionLabel.Enabled = True
      AnswerTextBox.Enabled = True
      EmailPasswordButton.Enabled = True
    End If

  End Sub


  Public Sub EmailPassword_OnClick(ByVal sender As Object, ByVal args As EventArgs)

    ' Note: Returning a password in clear text using email is not recommended for
    ' sites that require a high level of security.

    Try
      Dim password As String = Membership.Provider.GetPassword(UsernameTextBox.Text, AnswerTextBox.Text)
      Dim u As MembershipUser = Membership.GetUser(UsernameTextBox.Text)
      EmailPassword(u.Email, password)
      Msg.Text = "Your password was sent via email."
    Catch e As MembershipPasswordException
      Msg.Text = "The password answer is incorrect. Please check the value and try again."
    Catch e As System.Configuration.Provider.ProviderException
      Msg.Text = "An error occurred retrieving your password. Please check your values " & _
                 "and try again."
    End Try

  End Sub


  Private Sub EmailPassword(ByVal email As String, ByVal password As String)

    Try
      Dim Message As MailMessage = New MailMessage("administrator", email)
      Message.Subject = "Your Password"
      Message.Body = "Your password is: " & Server.HtmlEncode(password)
      
      Dim SmtpMail As SmtpClient = New SmtpClient("SMTPSERVER")
      SmtpMail.Send(Message)
    Catch
      Msg.Text = "An exception occurred while sending your password. Please try again."
    End Try

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
  <title>Sample: Retrieve Password</title>
</head>
<body>
  <form id="form1" runat="server">
    <h3>
      Retrieve Password</h3>
    <asp:Label ID="Msg" runat="server" ForeColor="maroon" /><br />
    Username:
    <asp:TextBox ID="UsernameTextBox" Columns="30" runat="server" AutoPostBack="True" />
    <asp:RequiredFieldValidator ID="UsernameRequiredValidator" runat="server" ControlToValidate="UsernameTextBox"
      ForeColor="red" Display="Static" ErrorMessage="Required" /><br />
    Password Question: <b>
      <asp:Label ID="QuestionLabel" runat="server" /></b><br />
    Answer:
    <asp:TextBox ID="AnswerTextBox" Columns="60" runat="server" Enabled="False" />
    <asp:RequiredFieldValidator ID="AnswerRequiredValidator" runat="server" ControlToValidate="AnswerTextBox"
      ForeColor="red" Display="Static" ErrorMessage="Required" Enabled="False" /><br />
    <asp:Button ID="EmailPasswordButton" Text="Email My Password" OnClick="EmailPassword_OnClick"
      runat="server" Enabled="False" />
  </form>
</body>
</html>

Remarks

The GetUser method retrieves the user information from the data source and creates a MembershipUser object populated with the returned data.

If you use one of the GetUser overloads that does not take a username parameter, GetUser returns the information for the current logged-on membership user. The current logged-on membership user is identified by the Name of the user in the current HttpContext.

You can also specify whether you want GetUser to update the last-activity date/time stamp for the user being retrieved with the userIsOnline parameter. Of the GetUser overloads that do not take a userIsOnline parameter, Membership.GetUser implicitly updates the last-activity date/time stamp for the user. Membership.GetUser and GetUser do not.

Applies to

GetUser(Object, Boolean)

Gets the information from the data source for the membership user associated with the specified unique identifier. Updates the last-activity date/time stamp for the user, if specified.

public:
 static System::Web::Security::MembershipUser ^ GetUser(System::Object ^ providerUserKey, bool userIsOnline);

public static System.Web.Security.MembershipUser GetUser (object providerUserKey, bool userIsOnline);

static member GetUser : obj * bool -> System.Web.Security.MembershipUser

Public Shared Function GetUser (providerUserKey As Object, userIsOnline As Boolean) As MembershipUser

Parameters

providerUserKey: Object

The unique user identifier from the membership data source for the user.

userIsOnline: Boolean

If true, updates the last-activity date/time stamp for the specified user.

Returns

MembershipUser

A MembershipUser object representing the user associated with the specified unique identifier.

Exceptions

ArgumentNullException

providerUserKey is null.

Remarks

The GetUser method retrieves the user information from the data source and creates a MembershipUser object populated with the returned data. The user is identified with the unique identifier from the data source specified in the providerUserKey parameter.

Applies to

GetUser(String)

Gets the information from the data source for the specified membership user.

public:
 static System::Web::Security::MembershipUser ^ GetUser(System::String ^ username);

public static System.Web.Security.MembershipUser GetUser (string username);

static member GetUser : string -> System.Web.Security.MembershipUser

Public Shared Function GetUser (username As String) As MembershipUser

Parameters

username: String

The name of the user to retrieve.

Returns

MembershipUser

A MembershipUser object representing the specified user. If the username parameter does not correspond to an existing user, this method returns null.

Exceptions

ArgumentException

username contains a comma (,).

ArgumentNullException

username is null.

Examples

The following code example uses the GetUser method to return a MembershipUser object for the current logged-on user and updates the email address for the user.

<%@ 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">

MembershipUser u;

public void Page_Load(object sender, EventArgs args)
{
  u = Membership.GetUser(User.Identity.Name);

  if (!IsPostBack)
  {
    EmailTextBox.Text = u.Email; 
  }
}

public void UpdateEmailButton_OnClick(object sender, EventArgs args)
{
  try
  {
    u.Email = EmailTextBox.Text;

    Membership.UpdateUser(u);
  
    Msg.Text = "User email updated.";
  }
  catch (System.Configuration.Provider.ProviderException e)
  {
    Msg.Text = e.Message;
  }
}

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Sample: Update User E-Mail</title>
</head>
<body>

<form id="form1" runat="server">
  <h3>Update E-Mail Address for <%=User.Identity.Name%></h3>

  <asp:Label id="Msg" ForeColor="maroon" runat="server" /><br />

  <table cellpadding="3" border="0">
    <tr>
      <td>Email Address:</td>
      <td><asp:TextBox id="EmailTextBox" MaxLength="128" Columns="30" runat="server" /></td>
      <td><asp:RequiredFieldValidator id="EmailRequiredValidator" runat="server"
                                    ControlToValidate="EmailTextBox" ForeColor="red"
                                    Display="Static" ErrorMessage="Required" /></td>
    </tr>
    <tr>
      <td></td>
      <td><asp:Button id="UpdateEmailButton" 
                      Text="Update Email" 
                      OnClick="UpdateEmailButton_OnClick" 
                      runat="server" /></td>
    </tr>
  </table>
</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 u As MembershipUser

Public Sub Page_Load(sender As Object, args As EventArgs)

  u = Membership.GetUser(User.Identity.Name)

  If Not IsPostBack Then EmailTextBox.Text = u.Email

End Sub

Public Sub UpdateEmailButton_OnClick(sender As Object, args As EventArgs)

  Try
    u.Email = EmailTextBox.Text

    Membership.UpdateUser(u)
  
    Msg.Text = "User email updated."
  Catch e As System.Configuration.Provider.ProviderException
    Msg.Text = e.Message
  End Try

End Sub

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Sample: Update User E-Mail</title>
</head>
<body>

<form id="form1" runat="server">
  <h3>Update E-Mail Address for <%=User.Identity.Name%></h3>

  <asp:Label id="Msg" ForeColor="maroon" runat="server" /><br />

  <table cellpadding="3" border="0">
    <tr>
      <td>Email Address:</td>
      <td><asp:TextBox id="EmailTextBox" MaxLength="128" Columns="30" runat="server" /></td>
      <td><asp:RequiredFieldValidator id="EmailRequiredValidator" runat="server"
                                    ControlToValidate="EmailTextBox" ForeColor="red"
                                    Display="Static" ErrorMessage="Required" /></td>
    </tr>
    <tr>
      <td></td>
      <td><asp:Button id="UpdateEmailButton" 
                      Text="Update Email" 
                      OnClick="UpdateEmailButton_OnClick" 
                      runat="server" /></td>
    </tr>
  </table>
</form>

</body>
</html>

Remarks

The GetUser method retrieves the user information from the data source and creates a MembershipUser object populated with the returned data. If you use one of the GetUser overloads that does not take a username parameter, GetUser returns the information for the current logged-on membership user. The current logged-on membership user is identified by the Name of the user in the current HttpContext.

Applies to

GetUser(Boolean)

Gets the information from the data source for the current logged-on membership user. Updates the last-activity date/time stamp for the current logged-on membership user, if specified.

public:
 static System::Web::Security::MembershipUser ^ GetUser(bool userIsOnline);

public static System.Web.Security.MembershipUser GetUser (bool userIsOnline);

static member GetUser : bool -> System.Web.Security.MembershipUser

Public Shared Function GetUser (userIsOnline As Boolean) As MembershipUser

Parameters

userIsOnline: Boolean

If true, updates the last-activity date/time stamp for the specified user.

Returns

MembershipUser

A MembershipUser object representing the current logged-on user.

Exceptions

ArgumentException

No membership user is currently logged in.

Examples

The following code example displays the user name for the current logged-on membership user in the ASP.NET page without updating the last-activity date/time stamp for the user.

<%@ 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">

MembershipUser currentUser;

public void Page_Load()
{
  currentUser = Membership.GetUser(false);
}

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Home Page</title>
</head>
<body>

<form id="form1" runat="server">
Welcome <b><%=currentUser.UserName%></b>. 
</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 currentUser As MembershipUser

Public Sub Page_Load()
  currentUser = Membership.GetUser(False)
End Sub

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Home Page</title>
</head>
<body>

<form id="form1" runat="server">
Welcome <b><%=currentUser.UserName%></b>.
</form>

</body>
</html>

Remarks

You can also specify whether you want GetUser to update the last-activity date/time stamp for the user being retrieved using the userIsOnline parameter. Of the GetUser overloads that do not take a userIsOnline parameter, GetUser() implicitly updates the last-activity date/time stamp for the user. GetUser(System.String) and GetUser(System.Object) do not.

Applies to

GetUser()

Gets the information from the data source and updates the last-activity date/time stamp for the current logged-on membership user.

public:
 static System::Web::Security::MembershipUser ^ GetUser();

public static System.Web.Security.MembershipUser GetUser ();

static member GetUser : unit -> System.Web.Security.MembershipUser

Public Shared Function GetUser () As MembershipUser

Returns

MembershipUser

A MembershipUser object representing the current logged-on user.

Exceptions

ArgumentException

No membership user is currently logged in.

Examples

The following code example updates the last-activity date/time stamp for the current logged-on membership user and displays the user name in the ASP.NET page.

<%@ 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">

MembershipUser currentUser;

public void Page_Load()
{
  currentUser = Membership.GetUser();
}

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Home Page</title>
</head>
<body>

<form id="form1" runat="server">
Welcome <b><%=currentUser.UserName%></b>. 
</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 currentUser As MembershipUser

Public Sub Page_Load()
  currentUser = Membership.GetUser()
End Sub

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Home Page</title>
</head>
<body>

<form id="form1" runat="server">
Welcome <b><%=currentUser.UserName%></b>.
</form>

</body>
</html>

Remarks

GetUser() retrieves the user information from the data source and creates a MembershipUser object populated with the returned data. If you use one of the GetUser overloads that does not take a username parameter, GetUser returns the information for the current logged-on membership user. The current logged-on membership user is identified by the Name of the user in the current HttpContext.

Applies to

GetUser(Object)

Gets the information from the data source for the membership user associated with the specified unique identifier.

public:
 static System::Web::Security::MembershipUser ^ GetUser(System::Object ^ providerUserKey);

public static System.Web.Security.MembershipUser GetUser (object providerUserKey);

static member GetUser : obj -> System.Web.Security.MembershipUser

Public Shared Function GetUser (providerUserKey As Object) As MembershipUser

Parameters

providerUserKey: Object

The unique user identifier from the membership data source for the user.

Returns

MembershipUser

A MembershipUser object representing the user associated with the specified unique identifier.

Exceptions

ArgumentNullException

providerUserKey is null.

Remarks

The GetUser method retrieves the user information from the data source and creates a MembershipUser object populated with the returned data. The user is identified using the unique identifier from the data source specified using the providerUserKey parameter.

You can also specify whether you want GetUser to update the last-activity date/time stamp for the user being retrieved with the userIsOnline parameter. Of the GetUser overloads that do not take a userIsOnline parameter, GetUser() implicitly updates the last-activity date/time stamp for the user. GetUser(System.String) and GetUser(System.Object) do not

Applies to

แชร์ผ่าน

Membership.GetUser Method

Definition

Overloads

GetUser(String, Boolean)

Parameters

Returns

Exceptions

Examples

Remarks

See also

Applies to

GetUser(Object, Boolean)

Parameters

Returns

Exceptions

Remarks

See also

Applies to

GetUser(String)

Parameters

Returns

Exceptions

Examples

Remarks

See also

Applies to

GetUser(Boolean)

Parameters

Returns

Exceptions

Examples

Remarks

See also

Applies to

GetUser()

Returns

Exceptions

Examples

Remarks

See also

Applies to

GetUser(Object)

Parameters

Returns

Exceptions

Remarks

See also

Applies to

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