Check birthday : CompareValidator « Validation « ASP.NET Tutorial

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ASP.NET Tutorial » Validation » CompareValidator 
8. 2. 15. Check birthday
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Login" %>

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

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Simple Login Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        
          Username:<br />
          <asp:TextBox id="usernameTextBox" runat="server" />
          <asp:RequiredFieldValidator id="usernameReq"
              runat="server"
              ControlToValidate="usernameTextBox"
              ErrorMessage="Username is required!"
              SetFocusOnError="True" />
        
        
          Password and Confirmation:<br />
          <asp:TextBox id="passwordTextBox" 
              runat="server"
              TextMode="Password" />
          <asp:RequiredFieldValidator id="passwordReq"
              runat="server"
              ControlToValidate="passwordTextBox"
              ErrorMessage="Password is required!"
              SetFocusOnError="True" 
              Display="Dynamic" />
          <asp:TextBox id="confirmPasswordTextBox" runat="server"
              TextMode="Password" />
          <asp:RequiredFieldValidator id="confirmPasswordReq"
              runat="server" ControlToValidate="confirmPasswordTextBox"
              ErrorMessage="Password confirmation is required!"
              SetFocusOnError="True" Display="Dynamic" />
          <asp:CompareValidator id="comparePasswords" runat="server"
              ControlToCompare="passwordTextBox"
              ControlToValidate="confirmPasswordTextBox"
              ErrorMessage="Your passwords do not match up!"
              Display="Dynamic" />
        
        
          Birth Date:<br />
          <asp:TextBox id="birthDateTextBox" runat="server" />
          <asp:CompareValidator id="birthDateCheck" runat="server"
              Operator="DataTypeCheck" Type="Date"
              ControlToValidate="birthDateTextBox" 
              ErrorMessage="You must enter the date in a valid format!"
              SetFocusOnError="True" 
              Display="Dynamic" />
        
        
          <asp:Button id="submitButton" runat="server"
              Text="Submit" OnClick="submitButton_Click" />
        
    </div>
    </form>
</body>
</html>

File: Default.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class Login : System.Web.UI.Page
{
    protected void submitButton_Click(object sender, EventArgs e)
    {
        if (Page.IsValid)
        {
            submitButton.Text = "Valid";
        }
        else
        {
            submitButton.Text = "Invalid!";
        }
    }
}
8. 2. CompareValidator
8. 2. 1. CompareValidator performs three different types of validations
8. 2. 2. CompareValidator performs a comparison against a fixed value.
8. 2. 3. CompareValidator compares the value of one form field against another form field.
8. 2. 4. asp:CompareValidator, Type='String', Operator='NotEqual' and ErrorMessage
8. 2. 5. What happens to asp:CompareValidator in the client side
8. 2. 6. Set DeleteParameters, InsertParameters and UpdateParameters for asp:SqlDataSource
8. 2. 7. Using the CompareValidator to test values against other control values
8. 2. 8. Using the CompareValidator to validate against constants
8. 2. 9. To specify the data types: Currency, Date, Double, Integer, String
8. 2. 10. Making comparisons with the CompareValidator control
8. 2. 11. CompareValidator for number, text and password
8. 2. 12. Disable Client Validation
8. 2. 13. Use CompareValidator to check password field and confirm password field
8. 2. 14. CompareValidator with age field
8. 2. 15. Check birthday
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