📄 register.aspx

📁 asp.net技术内幕的书配源码

💻 ASPX

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<%@ Import Namespace="System.Data" %>

<Script Runat="Server">

Sub Button_Click( s As Object, e As EventArgs )
  Dim dstPasswords As DataSet
  Dim dtblPasswords As DataTable
  Dim arrUsers() As DataRow
  Dim drowNew As DataRow

  If IsValid Then
    dstPasswords = New DataSet()
    dstPasswords.ReadXml( MapPath( "../Passwords.xml" ) )
    dtblPasswords = dstPasswords.Tables( 0 )
    arrUsers = dtblPasswords.Select( "Name='" & txtUsername.Text & "'" )
    If arrUsers.Length > 0 Then
      lblMessage.Text = "Username Already Registered!"
    Else
      drowNew = dtblPasswords.NewRow()
      drowNew( "Name" ) = txtUsername.Text
      drowNew( "Password" ) = txtPassword.Text
      dtblPasswords.Rows.Add( drowNew )
      dstPasswords.WriteXml( MapPath( "../Passwords.xml" ) )
      FormsAuthentication.RedirectFromLoginPage( txtUsername.Text, False )
    End If
  End If
End Sub

</Script>

<html>
<head><title>Register.aspx</title></head>
<body>
<form Runat="Server">

<h2>Please Register</h2>

<asp:Label
  ID="lblMessage"
  ForeColor="Red"
  Font-Bold="True"
  EnableViewState="False"
  Runat="Server" />
<p>
<b>Username:</b>
<br>
<asp:TextBox
  ID="txtUsername"
  Runat="Server" />
<asp:RequiredFieldValidator
  ControlToValidate="txtUsername"
  Text="Required!"
  Runat="Server" />
<p>
<b>Password:</b>
<br>
<asp:TextBox
  ID="txtPassword"
  Runat="Server" />
<asp:RequiredFieldValidator
  ControlToValidate="txtPassword"
  Text="Required!"
  Runat="Server" />
<p>
<asp:Button
  Text="Register!"
  OnClick="Button_Click"
  Runat="Server" />

</Form>
</body>
</html>

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