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Cannot add class to aspx.cs file

I have 2 files in my web site project, Translator2.aspx and Translator2.aspx.cs. I want to add new class (Erwin:Translator2) to my Translator2.aspx.cs file. However it was error like this :
Severity Code Description Project File Line Suppression State
Error 'translator2_aspx' does not contain a definition for 'Switch'
and no extension method 'Switch' accepting a first argument of type
'translator2_aspx' could be found (are you missing a using directive
or an assembly reference?)
C:\Users\erwin.surya\Documents\Visual
Studio 2017\WebSites\WebSite1\Translator2.aspx 33
Here is my Translator2.aspx code:
<%# Page Language="C#" Async="true" AutoEventWireup="true" CodeFile="Translator2.aspx.cs" MasterPageFile="~/Site.Master" Inherits="Translator2" %>
<asp:Content runat="server" ID="BodyContent" ContentPlaceHolderID="MainContent">
<div class="form-group">
<asp:Label runat="server" AssociatedControlID="English" CssClass="col-md-2 control-label">English</asp:Label>
<div class="col-md-10">
<asp:TextBox Height="79px" TextMode="MultiLine" Width="452px" runat="server" ID="English" CssClass="form-control" />
</div> </div>
<div class="col-md-offset-2 col-md-10">
<asp:Button runat="server" OnClick="Submit" Height="39px" Width="100px" Text="Translate" CssClass="btn btn-default" />
</div>
<div class="col-md-offset-2 col-md-10">
<asp:Button runat="server" OnClick="Switch" Height="39px" Width="100px" Text="Switch" CssClass="btn btn-default" />
</div>
<br /><br /><br />
<div class="form-group">
<asp:Label runat="server" AssociatedControlID="Japanese" CssClass="col-md-2 control-label">Japanese</asp:Label>
<div class="col-md-10">
<asp:TextBox Height="79px" TextMode="MultiLine" Width="452px" runat="server" ID="Japanese" CssClass="form-control" />
</div></div>
<br /><br />
<asp:PlaceHolder runat="server" ID="ErrorMessage" Visible="false">
<p class="text-danger">
<asp:Literal runat="server" ID="FailureText" />
</p>
</asp:PlaceHolder>
</asp:Content>
Here is my Translator2.aspx.cs code:
partial class Translator2 : Page
{
public async void Submit(object sender, EventArgs e)
{
string key = "92fcf1387f844a8";
var authTokenSource = new AzureAuthToken(key.Trim());
string authToken;
try
{
authToken = await authTokenSource.GetAccessTokenAsync();
}
catch (HttpRequestException)
{
if (authTokenSource.RequestStatusCode == HttpStatusCode.Unauthorized)
{
Console.WriteLine("Request to token service is not authorized (401). Check that the Azure subscription key is valid.");
return;
}
if (authTokenSource.RequestStatusCode == HttpStatusCode.Forbidden)
{
Console.WriteLine("Request to token service is not authorized (403). For accounts in the free-tier, check that the account quota is not exceeded.");
return;
}
throw;
}
string output = "";
string text = English.Text;
string uri = "https://api.microsofttranslator.com/v2/Http.svc/Translate?text=" + HttpUtility.UrlEncode(text) + "&from=" + "en" + "&to=" + "ja";
HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(uri);
httpWebRequest.Headers.Add("Authorization", authToken);
using (WebResponse response = httpWebRequest.GetResponse())
using (Stream stream = response.GetResponseStream())
{
DataContractSerializer dcs = new DataContractSerializer(Type.GetType("System.String"));
string translation = (string)dcs.ReadObject(stream);
Console.WriteLine("Translation for source text '{0}' from {1} to {2} is", text, "en", "ja");
Console.WriteLine(translation);
output = translation;
}
Japanese.Text = output;
}
class Erwin : Translator2
{
string from, to;
public void SwapStrings(string s1, string s2)
{
string temp = s1;
s1 = s2;
s2 = temp;
from = s1;
to = s2;
testing.Text = from;
testing1.Text = to;
}
protected void Switch(object sender, EventArgs e)
{
string str1 = testing.Text;
string str2 = testing1.Text;
System.Console.WriteLine("Inside Main, before swapping: {0} {1}", str1, str2);
SwapStrings(str1, str2);
}
}
Do you have any idea why I can't add Erwin:Translato2 class? everything works fine before I add the class. Did I miss something?

The Switch method is in a different class than the class that is powering your aspx page. If you want switch to be some kind of utility method, you should create a new class, maybe Erwin in a completely separate file (Erwin.cs), and have a switch method inside that that is public and probably static. I also note that switch doesn't return anything, so not sure what you are trying to accomplish with it.
The OnClick handler for your button should be in the code behind -- ie in the Translator2 class. Inside this handler, you could call Erwin.Switch().

Session on Textbox with asp.net and c#

I'am try to make a session on a Textbox in asp.net, that textbox allows the user to enter values from 1-4, but whenever I click on button "book", it gives me an null pointer exception, I am using FindControl function from my c# backend.
Here's my code
.aspx page
<%# Page Title="" Language="C#" MasterPageFile="~/Main.Master" AutoEventWireup="true" CodeBehind="hotels_main.aspx.cs" Inherits="Hotel_Mangement.hotels_main" %>
<asp:Content ID="Content1" ContentPlaceHolderID="hotels_main" runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="keywords" content="free website templates, hotel and travel, CSS, XHTML, design layout" />
<meta name="description" content="Hotel and Travel - free website template provided by templatemo.com" />
<link href="/css/templatemo_style.css" rel="stylesheet" type="text/css" />
<div id="templatemo_container">
<!-- Free Website Template by www.TemplateMo.com -->
<div id="templatemo_content">
<div id="content_left" style="background-color:#2C3E50">
<div class="content_left_section">
<div class="content_title_01">Confirm Your Booking</div>
<form id="form1" >
<div class="form_row">
<br /><br />
<big>Check in:</big>
<asp:Calendar ID="checkin" runat="server" OnDayRender="checkin_DayRender" ></asp:Calendar>
<br /><br />
<big>Check out:</big> <asp:Calendar ID="checkout" runat="server" OnDayRender="checkout_DayRender1" ></asp:Calendar>
<br /><br />
<big>Number of room:</big> <asp:TextBox ID="rooms" runat="server" ForeColor="black" placeholder="Number of rooms" type="number" min="1" max="2"></asp:TextBox>
<br /><br />
<big>Number of members per room:</big> <asp:TextBox ID="members" runat="server" ForeColor="black" placeholder="Number of members" type="number" min="1" max="4"></asp:TextBox>
<br /> <br />
<asp:Button ID="book" runat="server" Text="Book" ForeColor="Black" Width="200px" Height="30px" OnClick="book_Click"></asp:Button>
</div>
<div class="cleaner"> </div>
</div> <!-- end of booking -->
<div class="cleaner_h30"> </div>
<div class="cleaner_horizontal_divider_01"> </div>
<div class="cleaner_h30"> </div>
<div class="content_left_section">
<div class="content_title_01">Contact Details</div>
<div class="news_title">Address</div>
<p>The Taj Mahal Palace<br />Apollo Bunder, Near Gateway Of India, Colaba , Mumbai , Maharashtra , India<br />Pincode- 400001</p>
<div class="cleaner_h30"> </div>
<div class="news_title">Phone</div>
<p>022 6665 3366 </p>
<div class="cleaner_h20"> </div>
<div class="news_title">Email Support</div>
<p>reservations#tajhotels.com</p>
</div> <!-- end of news section -->
<div class="cleaner_h30"> </div>
<div class="cleaner_horizontal_divider_01"> </div>
<div class="cleaner_h30"> </div>
<div class="cleaner_h30"> </div>
</div> <!-- end of content left -->
<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate>
<div id="content_right">
<div class="content_right_section">
<div class="content_title_01">Welcome to The <asp:Label ID="lblhotelname" runat="server" Text='<%#Eval("hotel_name") %>'></asp:Label> </div>
<asp:Image ID="Image1" runat="server" ImageUrl='<%#Eval("ImagePath") %>' Height="200px" width="200px"/>
<p><%#Eval("d_desc") %>. </p>
</div>
<div class="cleaner_h40"> </div>
<div class="content_right_2column_box">
<div class="content_title_01">Hotel Facilities</div>
<p> <%#Eval("hotel_facilties") %></p>
</div>
<div class="content_right_2column_box">
<div class="content_title_01">Policies</div>
<ul>
<asp:Label ID="lblpolicies" runat="server" Text='<%#Eval("hotel_policies") %>'></asp:Label>
</ul>
<div class="cleaner_h10"> </div>
</div>
<div class="cleaner_h40"> </div>
<div class="content_right_section">
<div class="content_title_01">Hotel location</div>
<asp:Label ID="Label1" runat="server" Text='<%#Eval("hotel_location") %>'></asp:Label>
<div class="cleaner_h20"> </div>
<div class="cleaner"> </div>
</div>
<div class="content_right_section">
<div class="content_title_01">Hotel price per room</div>
<asp:FormView ID="FormView1" runat="server"></asp:FormView>
<asp:Label ID="lblhotelprice" runat="server" Text='<%#Eval("price")%>'></asp:Label>
<div class="cleaner_h20"> </div>
<div class="cleaner"> </div>
</div>
<div class="cleaner_h20"> </div>
</div> <!-- end of content right -->
</ItemTemplate>
</asp:Repeater>
</div>
</div>
</asp:Content>
.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
namespace Hotel_Mangement
{
public partial class hotels_main : System.Web.UI.Page
{
int id;
int t1main, t2main, totalmain;
public static List<DateTime> list = new List<DateTime>();
SqlConnection con = new SqlConnection(#"Data Source=RISHIK\SQLEXPRESS;Initial Catalog=Register;Integrated Security=True");
protected void Page_Load(object sender, EventArgs e)
{
if (Request.QueryString["id"] == null)
{
Response.Redirect("hotels.aspx");
}
else
{
id = Convert.ToInt32(Request.QueryString["id"].ToString());
con.Open();
SqlCommand cmd = con.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "select * from hotels_main where hotel_id=" + id + "";
cmd.ExecuteNonQuery();
DataTable dt = new DataTable();
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(dt);
Repeater1.DataSource = dt;
Repeater1.DataBind();
con.Close();
}
}
protected void checkin_DayRender(object sender, DayRenderEventArgs e)
{
if (e.Day.Date < DateTime.Now.Date)
{
e.Day.IsSelectable = false;
e.Cell.ForeColor = System.Drawing.Color.Red;
e.Cell.Font.Strikeout = true;
}
Session["checkinmain"] = list;
}
protected void checkout_DayRender1(object sender, DayRenderEventArgs e)
{
if ((e.Day.Date < DateTime.Now.Date) || (e.Day.Date < checkin.SelectedDate))
{
e.Day.IsSelectable = false;
e.Cell.ForeColor = System.Drawing.Color.Red;
e.Cell.Font.Strikeout = true;
}
Session["checkoutmain"] = list;
}
protected void book_Click(object sender, EventArgs e)
{
if (Session["USER_ID"] == null)
{
Response.Redirect("login.aspx");
}
else
{
TextBox rooms = (TextBox)FindControl("rooms");
Session["roomsmain"] = rooms.Text;
TextBox members = (TextBox)FindControl("members");
Session["membersmain"] = members.Text;
Label lblhotelprice = (Label)FindControl("lblhotelprice");
Session["initialprice"] = lblhotelprice.Text;
t1main = Convert.ToInt32(Session["roomsmain"].ToString());
t2main = Convert.ToInt32(Session["initialprice"].ToString());
totalmain = t1main * t2main;
Session["totalpricemain"] = totalmain;
con.Open();
string insertQuery = "insert into hotel_booking_details(username,hotel_name,hotel_location,check_in,check_out,members,rooms,initial_price,total_price) values('" + Session["USER_ID"].ToString() + "','" + Session["hotel_name"].ToString() + "','" + Session["hotel_location"].ToString() + "','" + Session["checkinmain"].ToString() + "','" + Session["checkoutmain"].ToString() + "','" + Session["membersmain"].ToString() + "','" + Session["roomsmain"].ToString() + "','" + Session["initialprice"].ToString() + "','" + Session["totalpricemain"].ToString() + "')";
SqlCommand cmd1 = new SqlCommand(insertQuery, con);
cmd1.ExecuteNonQuery();
con.Close();
Response.Redirect("pay.aspx");
}
}
}
}

First of all, you cannot use another form tag in ASP.Net. You will need to remove <form id="form1" >.
it gives me an null pointer exception, I am using FindControl function
from my c# backend.
TextBox rooms = (TextBox)FindControl("rooms");
About code tries to find rooms textbox inside Page control. rooms control is not a direct child of Page control.
You will need to the find control recursively. Here is the helper method -
public static Control FindControlRecursive(Control root, string id)
{
if (root.ID == id)
return root;
return root.Controls.Cast<Control>()
.Select(c => FindControlRecursive(c, id))
.FirstOrDefault(c => c != null);
}
Usage
TextBox rooms = (TextBox)FindControlRecursive(Page, "rooms");

Why is my smtp SendMail prohibiting Log in fuctions, on site master?

I'm working in asp.net with c# and I decided to build a pop-up messaging module. I have done this on previous projects; however, I've never used it on a site that was also utilizing the Identity Framework or placed in my master page. I am also fairly new to C#.
The messenger appears to be working fine. However, now any kind of "submit" or "send" function found on the master page will not work properly. For example, if I try to log in as an admin, I will get my windows error messages for the field validation on the messenger. I tried taking out the RequiredFieldValidators, I was still unable to log in, instead it tried to send a message.
I then tried moving the module into a usercontrol and running it that way, still no luck. I had considered building a new masterpage for the log in page, that way I could remove the "contact" from the navigation on that page, thus eliminating the issue . However, I would prefer not to have to do this. I am sure there is a simple solution to correcting this, and my lack of experience with c# is not helping much.
Here is part of the navigation on my Site.Master, just to give an idea about what I'm doing:
<li><a runat="server" href="#" data-toggle="modal" data-target=".pop-up-1">Contact</a></li>
</ul>
<asp:LoginView runat="server" ViewStateMode="Disabled">
<AnonymousTemplate>
<ul class="nav navbar-nav navbar-right">
<li><a runat="server" href="~/Account/Login" style="color:#f46de6">Admin</a></li>
<li><asp:HyperLink ID="PayPalViewCart" runat="server" NavigateUrl=<%# Link.ToPayPalViewCart() %> style="color:#f46de6">View Cart</asp:HyperLink></li>
</ul>
</AnonymousTemplate>
<LoggedInTemplate>
<ul class="nav navbar-nav navbar-right">
<li><a runat="server" href="~/Account/Manage" title="Manage your account" style="color:#f46de6" >Hello, Admin</a></li>
<li>
<asp:LoginStatus runat="server" LogoutAction="Redirect" LogoutText="Log off" LogoutPageUrl="~/" OnLoggingOut="Unnamed_LoggingOut" />
</li>
</ul>
</LoggedInTemplate>
</asp:LoginView>
</div>
</div>
</div>
<uc1:popup1 runat="server" id="popup1" />
<div class="container body-content">
Now here is the code behind on this page, site.Master.cs:
public partial class SiteMaster : MasterPage
{
private const string AntiXsrfTokenKey = "__AntiXsrfToken";
private const string AntiXsrfUserNameKey = "__AntiXsrfUserName";
private string _antiXsrfTokenValue;
protected void Page_Init(object sender, EventArgs e)
{
// The code below helps to protect against XSRF attacks
var requestCookie = Request.Cookies[AntiXsrfTokenKey];
Guid requestCookieGuidValue;
if (requestCookie != null && Guid.TryParse(requestCookie.Value, out requestCookieGuidValue))
{
// Use the Anti-XSRF token from the cookie
_antiXsrfTokenValue = requestCookie.Value;
Page.ViewStateUserKey = _antiXsrfTokenValue;
}
else
{
// Generate a new Anti-XSRF token and save to the cookie
_antiXsrfTokenValue = Guid.NewGuid().ToString("N");
Page.ViewStateUserKey = _antiXsrfTokenValue;
var responseCookie = new HttpCookie(AntiXsrfTokenKey)
{
HttpOnly = true,
Value = _antiXsrfTokenValue
};
if (FormsAuthentication.RequireSSL && Request.IsSecureConnection)
{
responseCookie.Secure = true;
}
Response.Cookies.Set(responseCookie);
}
Page.PreLoad += master_Page_PreLoad;
}
protected void master_Page_PreLoad(object sender, EventArgs e)
{
if (!IsPostBack)
{
// Set Anti-XSRF token
ViewState[AntiXsrfTokenKey] = Page.ViewStateUserKey;
ViewState[AntiXsrfUserNameKey] = Context.User.Identity.Name ?? String.Empty;
}
else
{
// Validate the Anti-XSRF token
if ((string)ViewState[AntiXsrfTokenKey] != _antiXsrfTokenValue
|| (string)ViewState[AntiXsrfUserNameKey] != (Context.User.Identity.Name ?? String.Empty))
{
throw new InvalidOperationException("Validation of Anti-XSRF token failed.");
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Unnamed_LoggingOut(object sender, LoginCancelEventArgs e)
{
Context.GetOwinContext().Authentication.SignOut();
}
}
}
This is my user control for the pop-up:
<div class="modal fade pop-up-1" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel-1" aria-hidden="true">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="myLargeModalLabel-3">Contact Us</h4>
</div>
<div class="modal-body">
<table style="max-width:100%; height: auto; padding:20px">
<tr>
<td colspan="3">
<div style="margin:15px 0 20px 0"> Please, use the form below to contact us regarding any questions or concerns you might have:</div>
</td>
</tr>
<tr style="margin-bottom:10px">
<td style="width:150px; font-size:14px">Name:</td>
<td style="vertical-align:top; width:300px">
<asp:TextBox ID="txtName" runat="server" Width="300px" style="margin:10px"/>
</td>
<td>
<!--<asp:RequiredFieldValidator ID="rfvName" runat="server"
ControlToValidate="txtName" Display="Dynamic"
ErrorMessage="Name">*</asp:RequiredFieldValidator>-->
</td>
</tr>
<tr style="margin-bottom: 10px ">
<td style="font-size: 14px">Organization (optional):</td>
<td><asp:TextBox ID="txtOrganization" runat="server" Width="300px" style="margin:10px" /></td>
<td>
</td>
</tr>
<tr style="margin-bottom:10px">
<td style="font-size:14px"> Phone (optional):</td>
<td><asp:TextBox ID="txtPhone" runat="server" Width="300px" style="margin:10px" /></td>
<td>
</td>
</tr>
<tr style="margin-bottom:10px">
<td style="font-size:14px">Email:</td>
<td><asp:TextBox ID="txtEmail" runat="server" Width="300px" style="margin:10px" /></td>
<td>
<!--<asp:RequiredFieldValidator ID="rfvEmail" runat="server"
ControlToValidate="txtEmail" Display="Dynamic"
ErrorMessage="Email">*</asp:RequiredFieldValidator>-->
</td>
</tr>
<tr>
<td style="font-size:14px"> Message:</td>
<td><asp:TextBox ID="txtRequest" runat="server" TextMode="MultiLine" Width="300px" Height="60px" style="margin:10px" /></td>
<td>
<!--<asp:RequiredFieldValidator ID="rfvRequest" runat="server"
ControlToValidate="txtRequest" Display="Dynamic"
ErrorMessage="Message">*</asp:RequiredFieldValidator>-->
</td>
</tr>
<tr>
<td colspan="3">
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="SendMail" Width="60px" />
<asp:Button ID="btnReset" runat="server" Text="Reset" OnClick="ResetEmail" Width="60px" CausesValidation="false" />
<!--<asp:ValidationSummary ID="ValidationSummary1" runat="server" HeaderText="Please fill out the required fields:" ShowMessageBox="true" ShowSummary="false" />-->
</td>
</tr>
</table>
</div>
</div><!-- /.modal-content -->
</div><!-- /.modal-dialog -->
</div><!-- /.modal Contact Table-->
And last but not least, this is the code behind on the user control, and yes I know I can do this using my web.config also, and I tried that too with the same result:
public partial class pop_up_1 : System.Web.UI.UserControl
{
private bool IsValid;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void SendMail(object sender, EventArgs e)
{
if (IsValid)
{
//create a new email message
MailMessage mail = new MailMessage();
mail.From = new MailAddress("");
mail.To.Add("");
mail.Subject = "Information Request";
mail.IsBodyHtml = true;
mail.Body = "Name:" + this.txtName.Text + "<br />";
mail.Body += "Organization:" + txtOrganization.Text + "<br />";
mail.Body += "Phone:" + txtPhone.Text + "<br />";
mail.Body += "Email:" + txtEmail.Text + "<br />";
mail.Body += "Request or Question:" + txtRequest.Text + "<br />";
//Create SMTP client
SmtpClient smtp = new SmtpClient();
smtp.Host = "";
//Send the email
smtp.Send(mail);
//Define the name and type of the client script on the page.
String csName = "SuccessNotificationScript";
Type csType = this.GetType();
//Get a ClientScriptManager reference from the Page class.
ClientScriptManager cs = Page.ClientScript;
//Check to see if the client script is already registered.
if (!cs.IsClientScriptBlockRegistered(csType, csName))
{
string csText = "<script language='javascript'>window.alert('Thank you for submitting your request');</script>";
cs.RegisterClientScriptBlock(csType, csName, csText.ToString());
}
//Clear the form
ClearForm();
}
}
protected void ResetEmail(object sender, EventArgs e)
{
ClearForm();
}
protected void ClearForm()
{
txtName.Text = "";
txtOrganization.Text = "";
txtPhone.Text = "";
txtEmail.Text = "";
txtRequest.Text = "";
}
}
}
Any suggestions or ideas, greatly appreciated. Thanks
here is the backend of my login page, I am using identity framework:
public partial class Login : Page
{
protected void Page_Load(object sender, EventArgs e)
{
//RegisterHyperLink.NavigateUrl = "Register";
// Enable this once you have account confirmation enabled for password reset functionality
// ForgotPasswordHyperLink.NavigateUrl = "Forgot";
//OpenAuthLogin.ReturnUrl = Request.QueryString["ReturnUrl"];
var returnUrl = HttpUtility.UrlEncode(Request.QueryString["ReturnUrl"]);
if (!String.IsNullOrEmpty(returnUrl))
{
//RegisterHyperLink.NavigateUrl += "?ReturnUrl=" + returnUrl;
}
}
protected void LogIn(object sender, EventArgs e)
{
if (IsValid)
{
// Validate the user password
var manager = Context.GetOwinContext().GetUserManager<ApplicationUserManager>();
ApplicationUser user = manager.Find(Email.Text, Password.Text);
if (user != null)
{
IdentityHelper.SignIn(manager, user, RememberMe.Checked);
IdentityHelper.RedirectToReturnUrl(Request.QueryString["ReturnUrl"], Response);
}
else
{
FailureText.Text = "Invalid username or password.";
ErrorMessage.Visible = true;
}
}
}
}
}

Drag-Drop item from one data group to another data group in Telerik RadListView

I am trying to use the Telerik RadListView Drag-Drop feature:
http://demos.telerik.com/aspnet-ajax/listview/examples/datagrouping/defaultcs.aspx
The code below works fine but loops through all the items to find the "e.DestinationHtmlElement" which is not efficient. I want to be able to drag an item from one data group to another data group for Telerik RadListView with a better algorithm. How can I do that?
ASPX Code:
<telerik:RadListView runat="server" ID="Lsv_Vis" AllowPaging="True" PageSize="50"
ItemPlaceholderID="Phi_Vis_I" GroupPlaceholderID="Phi_Vis_G"
DataKeyNames="url_id, lst_id, url_name, url_address"
ClientDataKeyNames="url_id, lst_id, url_name, url_address"
OnItemDrop="CsVisItemDrop" OnItemDataBound="CsVisIDB" DataSourceID="Sql_Vis">
</telerik:RadListView>
<DataGroups>
<telerik:ListViewDataGroup GroupField="lst_id" DataGroupPlaceholderID="Phi_Vis_G">
<DataGroupTemplate>
<div class="Div_Vis_Grp"><span class="Spn_Vis"><%# (Container as RadListViewDataGroupItem).AggregatesValues["lst_name"].ToString() %></span></div>
<asp:Panel ID="Pnl_Vis" runat="server" CssClass="Pnl_Vis" ToolTip='<%# (Container as RadListViewDataGroupItem).DataGroupKey %>' onmouseover='this.className += " Vis_Sel";' onmouseout='this.className = this.className.split(" Vis_Sel").join("");'>
<asp:PlaceHolder ID="Phi_Vis_I" runat="server" />
</asp:Panel>
</DataGroupTemplate>
<GroupAggregates>
<telerik:ListViewDataGroupAggregate Aggregate="Max" DataField="lst_name" />
</GroupAggregates>
</telerik:ListViewDataGroup>
</DataGroups>
<ItemTemplate>
<div class="Div_Vis_Item rlvI">
<asp:Panel ID="Pnl_Vis" runat="server" ToolTip='<%# Eval("lst_id") %>' CssClass="Div_Vis_Item" onmouseover='this.className += " Vis_Sel";' onmouseout='this.className = this.className.split(" Vis_Sel").join("");'>
<a class="Hyp_Vis" runat="server" href='<%# Eval("url_address") %>' target="_blank">
<div class="Div_Vis_Body">
<div class="Div_Vis_Con">
<asp:Panel ID="Div_Vis_Con" runat="server" class="Div_Vis_Con" ToolTip='<%# Eval("lst_id") %>' ></asp:Panel>
</div>
</div>
<div class="Div_Vis_Link">
<asp:Label ID="Lbl_VisI" runat="server" Text='<%# Eval("url_name_short") %>' ToolTip='<%# Eval("url_name") %>'/>
</div>
</a>
</asp:Panel>
</div>
</ItemTemplate>
C# Code:
protected void CsVisItemDrop (object sender, RadListViewItemDragDropEventArgs e)
{
if (e.DestinationHtmlElement.IndexOf("Div_Vis_Con") < 0)
{
return;
}
foreach (RadListViewDataItem di in Lsv_Vis.Items)
{
Panel pnl = di.FindControl("Div_Vis_Con") as Panel;
if (pnl != null && pnl.ClientID == e.DestinationHtmlElement)
{
string uid = e.DraggedItem.GetDataKeyValue("url_id").ToString();
string lid = pnl.ToolTip.ToString();
using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["Con_Str"].ToString()))
{
using (SqlCommand cmd = new SqlCommand("UPDATE [MyTable] SET lst_id = #lst_id WHERE url_id = #url_id", conn))
{
cmd.Parameters.Add("#lst_id", SqlDbType.VarChar).Value = lid;
cmd.Parameters.Add("#url_id", SqlDbType.VarChar).Value = uid;
try
{
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
}
catch { }
}
}
}
}
Lsv_Vis.Rebind();
}

Contact form in SiteFinity C#

I want to do basic functionality with a simple contact form and on submit the form emails to someone. This is quite easy to do in asp.net, however I am having trouble once I upload it as a user control. Do you have a good example I can look at? Thank you!

It is the same as you would have in a normal asp.net page, the sample assumes you are using the latest version of Sitefinity and that you are have a RadScriptManager or ScriptManager on your master page.
Firstly here is my example form codebehind:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net.Mail;
using System.Text;
using System.ComponentModel;
public partial class UserControls_LandingPage_contactForm : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
bool bSent = false;
try
{
//create the email and add the settings
var email = new MailMessage();
email.From = new MailAddress(FromEmail);
email.To.Add(new MailAddress(FromEmail));
email.Subject = Subject;
email.IsBodyHtml = true;
//build the body
var sBody = new StringBuilder();
sBody.Append("<strong>Contact Details</strong><br /><br />");
sBody.AppendFormat("Needs: {0}<br />", cboConsultationType.SelectedValue);
sBody.AppendFormat("Name: {0}<br />", txtName.Text);
sBody.AppendFormat("Email: {0}<br />", txtEmail.Text);
sBody.AppendFormat("Number: {0}<br />", txtPhone.Text);
sBody.AppendFormat("Comment: {0}<br />", txtMsg.Text);
email.Body = sBody.ToString();
//send the email
var smtpServer = new SmtpClient();
smtpServer.Send(email);
//mark as sent ok
bSent = true;
}
catch (Exception ex)
{
//send any errors back
//add your own custom handling of errors;
}
//let the end user know if it was a success
ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "alert('" + (bSent ? SuccessText : FailureText) + "');", true);
}
//properties
public string FromEmail
{
get { return _fromEmail; }
set { _fromEmail = value; }
}
public string Subject
{
get { return _subject; }
set { _subject = value; }
}
public string SuccessText
{
get { return _successText; }
set { _successText = value; }
}
public string FailureText
{
get { return _failureText; }
set { _failureText = value; }
}
//fields
private string _fromEmail = "info#example.com.au";
private string _subject = "Website Enquiry";
private string _successText = "Thank you for submitting your details we will be in touch shortly.";
private string _failureText = "There was a problem submitting your details please try again shortly.";
}
ASCX Code:
<%# Control Language="C#" AutoEventWireup="true" CodeFile="ContactForm.ascx.cs" Inherits="UserControls_LandingPage_contactForm" %>
<fieldset>
<div class="focus">
<label>
I need...</label>
<asp:DropDownList ID="cboConsultationType" runat="server" CssClass="select sub web">
<asp:ListItem Value="I Need A New Web Site">A completely new website</asp:ListItem>
<asp:ListItem Value="Web Site Upgrade">My website upgraded</asp:ListItem>
<asp:ListItem Value="Application Design">An application </asp:ListItem>
<asp:ListItem Value="An ecommerce website">New Ecommerce website</asp:ListItem>
<asp:ListItem Value="Other">Other</asp:ListItem>
</asp:DropDownList>
</div>
<ul>
<li>
<asp:Label EnableViewState="false" ID="lblErrorMessage" runat="server"></asp:Label>
</li>
<li>
<asp:Label EnableViewState="false" ID="lblName" AssociatedControlID="txtName" runat="server"
Text="Name"></asp:Label>
<asp:TextBox ID="txtName" runat="server" ValidationGroup="ContactValidation"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidatorName" runat="server" ValidationGroup="ContactValidation"
ControlToValidate="txtName" ErrorMessage="Name is required">*</asp:RequiredFieldValidator>
</li>
<li>
<asp:Label ID="lblPhone" runat="server" AssociatedControlID="txtPhone" EnableViewState="false"
Text="Phone"></asp:Label>
<asp:TextBox ID="txtPhone" runat="server" ValidationGroup="ContactValidation"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidatorPhone" runat="server" ValidationGroup="ContactValidation"
ControlToValidate="txtPhone" ErrorMessage="Phone is required">*</asp:RequiredFieldValidator>
</li>
<li>
<asp:Label ID="lblEmail" runat="server" AssociatedControlID="txtEmail" EnableViewState="false"
Text="Email"></asp:Label>
<asp:TextBox ID="txtEmail" runat="server" ValidationGroup="ContactValidation"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ValidationGroup="ContactValidation"
ControlToValidate="txtEmail" ErrorMessage="Email is required">*</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="RegularExpressionValidatorEmail" runat="server"
ControlToValidate="txtEmail" ValidationExpression="\w+([-+.']\w+)*#\w+([-.]\w+)*\.\w+([-.]\w+)*"
ValidationGroup="ContactValidation" ErrorMessage="Email address is invalid">*</asp:RegularExpressionValidator>
</li>
<li>
<asp:Label ID="lblMsg" runat="server" AssociatedControlID="txtMsg" EnableViewState="false"
Text="How can we assist you?"></asp:Label>
<asp:TextBox ID="txtMsg" runat="server" TextMode="MultiLine" Rows="5" Wrap="true"></asp:TextBox>
</li>
<li>
<asp:Button ID="btnSubmit" runat="server" EnableViewState="false" CssClass="submit"
Text="Send" ValidationGroup="ContactValidation" OnClick="btnSubmit_Click" />
</li>
</ul>
</fieldset>
Then the only other items you need to be wary of is in the web.config you need to modify the system.net settings for email:
<system.net>
<mailSettings>
<smtp from="mailmaster#yourdomain.com">
<network host="smtp.yourdomain.com" userName="Your_Username" password="Your_Password" port="25" />
</smtp>
</mailSettings>
</system.net>
Then upload the control or modify your web.config . Then provided your SMTP server is all set up correctly the form should send no problem.
I hope this helps you out.

I think one good approach is using the incorporated mail sender. The profits are that you can configure the settings inside the Administration->Settings->Advanced->System->SMTP
var smtpSettings = Config.Get<SystemConfig>().SmtpSettings;
MailMessage message = new MailMessage();
message.From = new MailAddress(smtpSettings.UserName);
message.To.Add(new MailAddress(toEmail));
StringBuilder sb = new StringBuilder();
sb.AppendFormat(body);
message.Subject = subject;
message.Body = sb.ToString();
message.IsBodyHtml = true;
message.BodyEncoding = Encoding.Unicode;
message.SubjectEncoding = Encoding.Unicode;
EmailSender.Get().Send(message);
You can use notifications too.