📄 register.aspx

📁 asp.net技术内幕的书配源码

💻 ASPX

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<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>

<script language="C#" runat=server>

void Button_Click(Object sender , EventArgs e) 
{
	DataSet dstPasswords;
	DataTable dtblPasswords;
	DataRow[] arrUsers;
	DataRow drowNew;

	if ( IsValid ) {
		dstPasswords = new DataSet();
		dstPasswords.ReadXml( MapPath( "../Passwords.xml" ) );
		dtblPasswords = dstPasswords.Tables[ 0 ];
		arrUsers = dtblPasswords.Select( "Name='" + txtUsername.Text + "'" );
		if ( arrUsers.Length > 0 ) {
		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 );
		}
	}
}

</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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