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January 13th, 2015, 03:23 AM
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Registered User
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Join Date: Jun 2014
Posts: 6
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CustomValidator Server-Side Not Firing
I'm trying to make a very basic mailing list control, but i'm having trouble with my CustomValidators. I've been working on the unsubscribe side of it, and I want to check to see if the email trying to be unsubscribed is actually on the mailing list, and inversely for subscribing. But I can't seem to get my server side validation functions to fire. I have breakpoints at the start of each validation function, and they are never triggered. For testing, I immediately set args.IsValid = false;
Hopefully one of you can help me out with this. Inbound wall of code.
MailingListControl.ascx
Code:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="MailingListControl.ascx.cs" Inherits="Controls_MailingList" %>
<h2><asp:Label ID="Label1" runat="server" Text="Label"></asp:Label></h2>
<asp:Panel ID="MailingListContainer" runat="server" CssClass="ControlContainer">
<asp:GridView ID="Display" runat="server" Visible="false"></asp:GridView>
<asp:Panel ID="Subscribe" runat="server" Visible="false">
<table>
<tr>
<td>First Name:</td>
<td>
<asp:TextBox ID="FirstNameTB" runat="server"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="FirstNameTB" CssClass="ErrorMessage" ErrorMessage="Enter your first name" Display="Dynamic" ValidationGroup="Subscribe">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td>Last Name:</td>
<td>
<asp:TextBox ID="LastNameTB" runat="server"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="LastNameTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Enter your last name" ValidationGroup="Subscribe">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td>Email:</td>
<td>
<asp:TextBox ID="EmailTB" runat="server" TextMode="Email"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ControlToValidate="EmailTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Enter your email address" ValidationGroup="Subscribe">*</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="EmailTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Please enter a valid email address" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" ValidationGroup="Subscribe">*</asp:RegularExpressionValidator>
<asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="EmailTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="That email is already subscribed" OnServerValidate="CustomValidator1_ServerValidate" ValidationGroup="Subscribe">*</asp:CustomValidator>
</td>
</tr>
<tr>
<td>Artist:</td>
<td>
<asp:CheckBox ID="ArtistCB" runat="server" />
</td>
<td> </td>
</tr>
<tr>
<td>Programmer:</td>
<td>
<asp:CheckBox ID="ProgrammerCB" runat="server" />
</td>
<td> </td>
</tr>
<tr>
<td>Sound:</td>
<td>
<asp:CheckBox ID="SoundCB" runat="server" />
</td>
<td> </td>
</tr>
<tr>
<td>Story:</td>
<td>
<asp:CheckBox ID="StoryCB" runat="server" />
</td>
<td> </td>
</tr>
<tr>
<td> </td>
<td>
<asp:Button ID="SubmitSubscribe" runat="server" Text="Submit" OnClick="SubmitSubscribe_Click" ValidationGroup="Subscribe" />
</td>
<td> </td>
</tr>
<tr>
<td colspan="3">
<asp:ValidationSummary ID="ValidationSummary1" runat="server" CssClass="ErrorMessage" HeaderText="Please correct the following errors:" ValidationGroup="Subscribe" />
</td>
</tr>
</table>
</asp:Panel>
<asp:Panel ID="Unsubscribe" runat="server" Visible="false">
<table>
<tr>
<td>Email:</td>
<td>
<asp:TextBox ID="EmailUnsubTB" runat="server" TextMode="Email"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ControlToValidate="EmailUnsubTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Enter your email address" ValidationGroup="Unsubscribe">*</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server" ControlToValidate="EmailUnsubTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Please enter a valid email address" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" ValidationGroup="Unsubscribe">*</asp:RegularExpressionValidator>
<asp:CustomValidator ID="CustomValidator2" runat="server" ControlToValidate="EmailUnsubTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="That email is already unsubscribed" OnServerValidate="CustomValidator2_ServerValidate" ValidationGroup="Unsubscribe">*</asp:CustomValidator>
</td>
</tr>
<tr>
<td> </td>
<td>
<asp:Button ID="SubmitUnsubscribe" runat="server" Text="Submit" OnClick="SubmitUnsubscribe_Click" ValidationGroup="Unsubscribe" />
</td>
<td> </td>
</tr>
<tr>
<td colspan="3">
<asp:ValidationSummary ID="ValidationSummary2" runat="server" CssClass="ErrorMessage" HeaderText="Please correct the following errors:" ValidationGroup="Unsubscribe" />
</td>
</tr>
</table>
</asp:Panel>
</asp:Panel>
MailingListControl.ascx.cs
Code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Data;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Controls_MailingList : System.Web.UI.UserControl
{
public string Use { get; set; }
public string CsvPath { get; set; }
public class User
{
public string First { get; set; }
public string Last { get; set; }
public string Email { get; set; }
public bool Programmer { get; set; }
public bool Artist { get; set; }
public bool Story { get; set; }
public bool Sound { get; set; }
public User(string first, string last, string email, bool programmer, bool artist, bool story, bool sound)
{
First = first;
Last = last;
Email = email;
Programmer = programmer;
Artist = artist;
Story = story;
Sound = sound;
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack)
{
Label1.Text = "Mailing List Action Complete.";
Display.Visible = false;
Unsubscribe.Visible = false;
Subscribe.Visible = false;
}
//else if (Use == "Display")
else if (Use == "ShowMailingList")
{
Display.Visible = true;
Label1.Text = "Viewing Mailing List.";
List<User> users = ReadCsv(CsvPath);
IEnumerable<User> SortedUsers =
from user in users
orderby user.Last
select user;
Display.DataSource = SortedUsers;
Display.DataBind();
}
else if (Use == "Unsubscribe")
{
Unsubscribe.Visible = true;
Label1.Text = "Unsubscribing from Mailing List.";
}
else //if (Use == "Subscribe")
{
Subscribe.Visible = true;
Label1.Text = "Subscribing to Mailing List.";
}
}
protected List<User> ReadCsv(string Path)
{
String[] csv = File.ReadAllLines(Server.MapPath(Path));
List<User> users = new List<User>();
for (int i = 1; i < csv.Length; i++)
{
var fields = csv[i].Split(','); // csv delimiter
User user = new User(fields[0], fields[1], fields[2], bool.Parse(fields[3]), bool.Parse(fields[4]), bool.Parse(fields[5]), bool.Parse(fields[6]));
users.Add(user);
}
return users;
}
protected void WriteCsv(string Path, List<User> Users)
{
StreamWriter file = new StreamWriter(Server.MapPath(Path));
var props = typeof(User).GetProperties();
for (int i = 0; i < props.Length; i++)
{
if (i < props.Length - 1)
file.Write(props[i].Name + ",");
else
file.Write(props[i].Name);
}
file.WriteLine();
foreach (User user in Users)
{
for (int i = 0; i < props.Length; i++)
{
var propertyValue = props[i].GetValue(user, null);
if (i < props.Length - 1)
file.Write(propertyValue + ",");
else
file.Write(propertyValue);
}
file.WriteLine();
}
file.Close();
}
protected void SubmitSubscribe_Click(object sender, EventArgs e)
{
Page.Validate();
if (Page.IsValid)
{
List<User> users = ReadCsv(CsvPath);
users.Add(new User(FirstNameTB.Text, LastNameTB.Text, EmailTB.Text, ProgrammerCB.Checked, ArtistCB.Checked, StoryCB.Checked, SoundCB.Checked));
WriteCsv(CsvPath, users);
}
}
protected void SubmitUnsubscribe_Click(object sender, EventArgs e)
{
Page.Validate();
if (Page.IsValid)
{
List<User> users = ReadCsv(CsvPath);
IEnumerable<User> LinqUsers =
from user in users
where user.Email != EmailUnsubTB.Text
select user;
WriteCsv(CsvPath, LinqUsers.ToList());
}
}
protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
{
args.IsValid = false;
List<User> users = ReadCsv(CsvPath);
IEnumerable<User> LinqUsers =
from user in users
where user.Email == EmailTB.Text
select user;
if (LinqUsers.Count() > 0)
args.IsValid = false;
}
protected void CustomValidator2_ServerValidate(object source, ServerValidateEventArgs args)
{
args.IsValid = false;
List<User> users = ReadCsv(CsvPath);
IEnumerable<User> LinqUsers =
from user in users
where user.Email != EmailUnsubTB.Text
select user;
if (LinqUsers.Count() == users.Count())
args.IsValid = false;
}
}
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January 14th, 2015, 03:41 AM
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Registered User
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Join Date: Jun 2014
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
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I figured out what my problem was. In case anybody stumbles upon this, i'll give my solution.
After a night of sleep and a shower, I remembered that custom validator server function fires on the server, no duh. In order to do that, the page (or control) has to postback. In the above code, the first thing I did was to check for postback and complete the transaction. So my solution was to remove the else from the first else if in the Page_Load, which ensures that one of the panels of the control gets set to visible. Then in the submit button click functions, I hide the appropriate panel and show the appropriate message.
Anyway, here is my code if somebody wants to compare the files.
MailingListControl.ascx
Code:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="MailingListControl.ascx.cs" Inherits="Controls_MailingList" %>
<h2><asp:Label ID="Label1" runat="server" Text="Label"></asp:Label></h2>
<asp:Panel ID="MailingListContainer" runat="server" CssClass="ControlContainer">
<asp:GridView ID="Display" runat="server" Visible="false"></asp:GridView>
<asp:Panel ID="Subscribe" runat="server" Visible="false">
<table>
<tr>
<td>First Name:</td>
<td>
<asp:TextBox ID="FirstNameTB" runat="server"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="FirstNameTB" CssClass="ErrorMessage" ErrorMessage="Enter your first name" Display="Dynamic" ValidationGroup="Subscribe">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td>Last Name:</td>
<td>
<asp:TextBox ID="LastNameTB" runat="server"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="LastNameTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Enter your last name" ValidationGroup="Subscribe">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td>Email:</td>
<td>
<asp:TextBox ID="EmailTB" runat="server" TextMode="Email"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ControlToValidate="EmailTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Enter your email address" ValidationGroup="Subscribe">*</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="EmailTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Please enter a valid email address" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" ValidationGroup="Subscribe">*</asp:RegularExpressionValidator>
<asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="EmailTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="That email is already subscribed" OnServerValidate="CustomValidator1_ServerValidate" ValidationGroup="Subscribe">*</asp:CustomValidator>
</td>
</tr>
<tr>
<td>Artist:</td>
<td>
<asp:CheckBox ID="ArtistCB" runat="server" />
</td>
<td> </td>
</tr>
<tr>
<td>Programmer:</td>
<td>
<asp:CheckBox ID="ProgrammerCB" runat="server" />
</td>
<td> </td>
</tr>
<tr>
<td>Sound:</td>
<td>
<asp:CheckBox ID="SoundCB" runat="server" />
</td>
<td> </td>
</tr>
<tr>
<td>Story:</td>
<td>
<asp:CheckBox ID="StoryCB" runat="server" />
</td>
<td> </td>
</tr>
<tr>
<td> </td>
<td>
<asp:Button ID="SubmitSubscribe" runat="server" Text="Submit" OnClick="SubmitSubscribe_Click" ValidationGroup="Subscribe" />
</td>
<td> </td>
</tr>
<tr>
<td colspan="3">
<asp:ValidationSummary ID="ValidationSummary1" runat="server" CssClass="ErrorMessage" HeaderText="Please correct the following errors:" ValidationGroup="Subscribe" />
</td>
</tr>
</table>
</asp:Panel>
<asp:Panel ID="Unsubscribe" runat="server" Visible="false">
<table>
<tr>
<td>Email:</td>
<td>
<asp:TextBox ID="EmailUnsubTB" runat="server" TextMode="Email"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ControlToValidate="EmailUnsubTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Enter your email address" ValidationGroup="Unsubscribe">*</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server" ControlToValidate="EmailUnsubTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Please enter a valid email address" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" ValidationGroup="Unsubscribe">*</asp:RegularExpressionValidator>
<asp:CustomValidator ID="CustomValidator2" runat="server" ControlToValidate="EmailUnsubTB" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="That email is not on the mailing list" OnServerValidate="CustomValidator2_ServerValidate" ValidationGroup="Unsubscribe">*</asp:CustomValidator>
</td>
</tr>
<tr>
<td> </td>
<td>
<asp:Button ID="SubmitUnsubscribe" runat="server" Text="Submit" OnClick="SubmitUnsubscribe_Click" ValidationGroup="Unsubscribe" />
</td>
<td> </td>
</tr>
<tr>
<td colspan="3">
<asp:ValidationSummary ID="ValidationSummary2" runat="server" CssClass="ErrorMessage" HeaderText="Please correct the following errors:" ValidationGroup="Unsubscribe" />
</td>
</tr>
</table>
</asp:Panel>
</asp:Panel>
MailingListControl.ascx.cs
Code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Data;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Controls_MailingList : System.Web.UI.UserControl
{
public string Use { get; set; }
public string CsvPath { get; set; }
public class User
{
public string First { get; set; }
public string Last { get; set; }
public string Email { get; set; }
public bool Programmer { get; set; }
public bool Artist { get; set; }
public bool Story { get; set; }
public bool Sound { get; set; }
public User(string first, string last, string email, bool programmer, bool artist, bool story, bool sound)
{
First = first;
Last = last;
Email = email;
Programmer = programmer;
Artist = artist;
Story = story;
Sound = sound;
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack)
{
Label1.Text = "Mailing List Action Complete.";
Display.Visible = false;
Unsubscribe.Visible = false;
Subscribe.Visible = false;
}
//else if (Use == "Display")
if (Use == "ShowMailingList")
{
Display.Visible = true;
Label1.Text = "Viewing Mailing List.";
List<User> users = ReadCsv(CsvPath);
IEnumerable<User> SortedUsers =
from user in users
orderby user.Last
select user;
Display.DataSource = SortedUsers;
Display.DataBind();
}
else if (Use == "Unsubscribe")
{
Unsubscribe.Visible = true;
Label1.Text = "Unsubscribing from the Mailing List.";
}
else
{
Subscribe.Visible = true;
Label1.Text = "Subscribing to the Mailing List.";
}
}
protected List<User> ReadCsv(string Path)
{
String[] csv = File.ReadAllLines(Server.MapPath(Path));
List<User> users = new List<User>();
for (int i = 1; i < csv.Length; i++)
{
var fields = csv[i].Split(','); // csv delimiter
User user = new User(fields[0], fields[1], fields[2], bool.Parse(fields[3]), bool.Parse(fields[4]), bool.Parse(fields[5]), bool.Parse(fields[6]));
users.Add(user);
}
return users;
}
protected void WriteCsv(string Path, List<User> Users)
{
StreamWriter file = new StreamWriter(Server.MapPath(Path));
var props = typeof(User).GetProperties();
for (int i = 0; i < props.Length; i++)
{
if (i < props.Length - 1)
file.Write(props[i].Name + ",");
else
file.Write(props[i].Name);
}
file.WriteLine();
foreach (User user in Users)
{
for (int i = 0; i < props.Length; i++)
{
var propertyValue = props[i].GetValue(user, null);
if (i < props.Length - 1)
file.Write(propertyValue + ",");
else
file.Write(propertyValue);
}
file.WriteLine();
}
file.Close();
}
protected void SubmitSubscribe_Click(object sender, EventArgs e)
{
Page.Validate();
if (Page.IsValid)
{
List<User> users = ReadCsv(CsvPath);
users.Add(new User(FirstNameTB.Text, LastNameTB.Text, EmailTB.Text, ProgrammerCB.Checked, ArtistCB.Checked, StoryCB.Checked, SoundCB.Checked));
WriteCsv(CsvPath, users);
Subscribe.Visible = false;
Label1.Text = "Thanks for subscribing " + FirstNameTB.Text + " " + LastNameTB.Text + "<br />" + "Emails will be sent to " + EmailTB.Text;
}
}
protected void SubmitUnsubscribe_Click(object sender, EventArgs e)
{
Page.Validate();
if (Page.IsValid)
{
List<User> users = ReadCsv(CsvPath);
IEnumerable<User> LinqUsers =
from user in users
where user.Email != EmailUnsubTB.Text
select user;
WriteCsv(CsvPath, LinqUsers.ToList());
Unsubscribe.Visible = false;
Label1.Text = "Successfully unsubscribed " + EmailUnsubTB.Text;
}
}
protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
{
List<User> users = ReadCsv(CsvPath);
IEnumerable<User> LinqUsers =
from user in users
where user.Email == EmailTB.Text
select user;
if (LinqUsers.Count() > 0)
args.IsValid = false;
}
protected void CustomValidator2_ServerValidate(object source, ServerValidateEventArgs args)
{
List<User> users = ReadCsv(CsvPath);
IEnumerable<User> LinqUsers =
from user in users
where user.Email != EmailUnsubTB.Text
select user;
if (LinqUsers.Count() == users.Count())
args.IsValid = false;
}
}
Last edited by xxAtrain223; January 14th, 2015 at 03:42 AM..
Reason: fixed closing code tag
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