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asp. Net registration page
2022-06-28 07:41:00 【No. 1006 Xiaobai】
Registration page , The effect is as follows 
RequiredFieldValidator Control ： Verify the input , This article verifies the input box
One of the more common attributes ：
ErrorMessage="* mandatory " ： Prompt for verification failure
ForeColor： The font color of the error message .
ControlToValidate： Of the validated control id
runat=“server” This control is a server control
<body style="background:#d7eeee;">
<form id="form1" runat="server" >
<div class="container" >
<div class="row">
<div class="col-md-3"></div>
<div class="col-md-6 login_text2">X Animation model website registration </div>
<div class="col-md-3"></div>
</div>
<div class="row">
<div class="col-md-3"></div>
<div class="col-md-6">
<div class="form-group">
<div class="row">
<div class="col-md-3 login_text"> user name ：</div>
<div class="col-md-6" >
<asp:TextBox ID="txtUser" class="form-control" runat="server"></asp:TextBox>
</div>
<div class="col-md-3">
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="* mandatory " ControlToValidate="txtUser"></asp:RequiredFieldValidator>
</div>
</div>
</div>
<div class="form-group">
<div class="row">
<div class="col-md-3 login_text"> Set the password ：</div>
<div class="col-md-6 ">
<asp:TextBox ID="txtPwd" runat="server" class="form-control" TextMode="Password"></asp:TextBox>
</div>
<div class="col-md-3">
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="* mandatory " ControlToValidate="txtPwd"></asp:RequiredFieldValidator>
</div>
</div>
</div>
<div class="form-group">
<div class="row">
<div class="col-md-3 login_text"> Confirm the password ：</div>
<div class="col-md-6 ">
<asp:TextBox ID="txtPwd2" runat="server" class="form-control" TextMode="Password"></asp:TextBox>
</div>
<div class="col-md-3">
<asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ErrorMessage="* mandatory " ControlToValidate="txtPwd"></asp:RequiredFieldValidator>
</div>
</div>
</div>
<div class="form-group">
<div class="row">
<div class="col-md-3 login_text"> Verification Code ：</div>
<div class="col-md-6">
<asp:TextBox ID="txtCheckCode" class="form-control" Width="150" runat="server"></asp:TextBox>
</div>
<div class="col-md-3" style="margin-top:5px">
<asp:Image ID="Image1" runat="server" ImageUrl="~/CheckCode.aspx" /></div>
</div>
</div>
<div class="form-group header_signup">
<asp:Button ID="btnlogon2" CssClass="header_login2" runat="server" Text=" register " OnClick="btnlogon2_Click" />
<asp:Button ID="ImageButton2" CssClass="header_login2" runat="server" Text=" Reset " OnClick="btnlogon3_Click"/>
<asp:HyperLink ID="HyperLink1" runat="server" class="btn-link" NavigateUrl="~/Default.aspx">[ Back to the home page ]</asp:HyperLink>
</div>
</div>
<div class="col-md-3"></div>
</div>
<div class="row">
<div class="col-md-3"></div>
<div class="col-md-6"></div>
<div class="col-md-3"></div>
</div>
</div>
</form>
</body>
At the bottom is btnlogon3_Click It is to realize the empty function , When the user clicks empty, the input box will be cleared
First, judge whether the password entered twice is correct 、 Then judge whether the verification code is correct
checkcode = Request.Cookies[“CheckCode”].Value; Get the value of the verification code
The implementation of the verification code is shown below
WebMessageBox.Show(“ congratulations , Registered successfully , Please login page ！”, “Logon.aspx”); Output the prompt box and jump to the page , You can pass Response.Write Realization
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Login : System.Web.UI.Page
{
// Declare user classes and random variables
Operation operation = new Operation();
Random random = new Random();
String checkcode = null;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnlogon2_Click(object sender, EventArgs e)
{
// utilize CheckCode Realize picture display
checkcode = Request.Cookies["CheckCode"].Value;
// Determine whether the passwords you re-enter are consistent
if (txtPwd.Text == txtPwd2.Text)
{
// Determine whether the verification code is correct
if (checkcode != txtCheckCode.Text.Trim())
{
WebMessageBox.Show(" The input verification code is incorrect ！", "Login.aspx");
}
else if (true)
{
// Add data to the database
operation.Login(txtUser.Text, txtPwd2.Text);
// Judge whether the data is successfully added to the database
if (operation.Login2(txtUser.Text, txtPwd2.Text).Tables[0].Rows.Count > 0) {
WebMessageBox.Show(" congratulations , Registered successfully , Please login page ！", "Logon.aspx");
}
else
{
WebMessageBox.Show(" Registration failed , Please re register ！", "Login.aspx");
}
}
}
else {
WebMessageBox.Show(" The confirmation password entered is not equal to the password , Please re-enter ！", "Login.aspx");
}
}
protected void btnlogon3_Click(object sender, EventArgs e)
{
txtUser.Text = "";
txtPwd.Text = "";
txtPwd2.Text = "";
txtCheckCode.Text = "";
}
}
Implementation of verification code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Drawing;
public partial class CheckCode : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
CreateCheckCodeImage(GenerateCheckCode());
}
private string GenerateCheckCode()
{
int number;
char code;
string checkCode = String.Empty;
System.Random random = new Random();
for (int i = 0; i < 4; i++)
{
number = random.Next();
if (number % 2 == 0)
code = (char)('0' + (char)(number % 10));
else
code = (char)('A' + (char)(number % 26));
checkCode += code.ToString();
}
Response.Cookies.Add(new HttpCookie("CheckCode", checkCode));
return checkCode;
}
private void CreateCheckCodeImage(string checkCode)
{
if (checkCode == null || checkCode.Trim() == String.Empty)
return;
System.Drawing.Bitmap image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * 12.5)), 22);
Graphics g = Graphics.FromImage(image);
try
{
// Generate random generator
Random random = new Random();
// Clear the background color of the picture
g.Clear(Color.White);
// Draw the background noise line of the picture
for (int i = 0; i < 2; i++)
{
int x1 = random.Next(image.Width);
int x2 = random.Next(image.Width);
int y1 = random.Next(image.Height);
int y2 = random.Next(image.Height);
g.DrawLine(new Pen(Color.Black), x1, y1, x2, y2);
}
Font font = new System.Drawing.Font("Arial", 12, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic));
System.Drawing.Drawing2D.LinearGradientBrush brush = new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true);
g.DrawString(checkCode, font, brush, 2, 2);
// Draw the foreground noise point of the picture
for (int i = 0; i < 100; i++)
{
int x = random.Next(image.Width);
int y = random.Next(image.Height);
image.SetPixel(x, y, Color.FromArgb(random.Next()));
}
// Draw the border line of the picture
g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
Response.ClearContent();
Response.ContentType = "image/Gif";
Response.BinaryWrite(ms.ToArray());
}
finally
{
g.Dispose();
image.Dispose();
}
}
}
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