Remember when uploading a file via ftp was more a pain and took some third party components for stability? Now I have more trust in the .net method, below is a function I use for uploading a file:
You could call this function like:
ftpFile("current.jpg",@"C:\temp\some.jpg");
And the function: Continue reading “Uploading a file via FTP in .net c#”
In a previous article on sending email with Exchange Web Services (EWS) we showed how easy it was to integrate with Exchange and send email. If you’ve ever wanted to attach a file to an email that your sending, it’s super easy (much faster than the System.Net.Mail method):
//Create an email message and identify the Exchange service EmailMessage message = new EmailMessage(service); //Attach a file - THE MAGIC message.Attachments.AddFileAttachment(@"c:\temp\somefile.jpg"); //Send the email message and save a copy message.SendAndSaveCopy();
That’s it! If you want to see all of the code needed for sending, see Retrieving and Sending Email using Exchange Web Services Managed API 2.0 (c#)
Adding and setting a cookie via javascript is pretty simple. Sometimes you want the cookie to expire in a certain amount of time, below is the method is use to calculate an expiration:
//create a date object
var date = new Date();
//add the current date + some seconds
//(below I add 300 seconds or 5 minutes).
//The 1000 is milliseconds
date.setTime(date.getTime() + (300 * 1000));
//convert the future date to universal time
var expires = date.toUTCString();
//set the cookie using whatever method / function you choose.
setCookie('cookiename', 'cookievalue', expires);
For the fun of it, below is the function I use to set cookies:
function setCookie(cname, cvalue, expires) {
document.cookie = cname + "=" + escape(cvalue) +
((expires) ? "; expires=" + expires : "");
}
And since we’re talking about cookies, here is a collection of great cookies recipes you can actually eat!
If you’re using MVC and want to capture an email address, there is a great built-in way to validate the address. When creating your model, add the [EmailAddress] DataAnnotation like below.
[Required]
[EmailAddress]
[StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 3)]
[DataType(DataType.EmailAddress)]
[Display(Name = "Email Address")]
public string Email { get; set; }
Then you can add to your view:
<li> <%: Html.LabelFor(m => m.Email) %> <%: Html.TextBoxFor(m => m.Email) %> </li>
And if you enter an invalid email you’ll get the error:
If you’re using any of the out-of-the-box mvc template projects (Visual Studio 2012 / c#), they do a great job with including functionality for user membership including log in, register and change password. However it does seem to be missing a ‘forgot password’ or ‘reset password’ function. Below is how you can quickly add this functionality by modifying the existing controllers and views:
1. Add a new view (I’m calling mine ResetPass) under the Views > Account folder:
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<ledme2.Models.LoginModel>" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
Reset Pass
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<hgroup class="title">
<h1>Reset Your Password</h1>
</hgroup>
<section id="loginForm">
<h2>Enter the username you wish to reset. An email will be sent with your password and the new password will expire in 3 hours.</h2>
<% using (Html.BeginForm(new { ReturnUrl = ViewBag.ReturnUrl }))
{ %>
<%: Html.AntiForgeryToken() %>
<%: Html.ValidationSummary(true) %>
<fieldset>
<legend>Enter the username you wish to reset. An email will be sent with your password and the new password will expire in 3 hours.</legend>
<ol>
<li>
<%: Html.LabelFor(m => m.UserName) %>
<%: Html.TextBoxFor(m => m.UserName) %>
<%: Html.ValidationMessageFor(m => m.UserName) %>
</li>
</ol>
<input type="submit" value="Reset" />
</fieldset>
<% } %>
<% if (ViewData["msg"] != null)
{ %>
<%: ViewData["msg"] %>
<% } %>
</section>
</asp:Content>
<asp:Content ID="Content3" ContentPlaceHolderID="FeaturedContent" runat="server">
</asp:Content>
<asp:Content ID="Content4" ContentPlaceHolderID="ScriptsSection" runat="server">
</asp:Content>
2. Add these two methods to the AccountController.cs (I’ve left out the code w/ the email function, feel free to add your own):
[AllowAnonymous]
public ActionResult ResetPass(string returnUrl)
{
ViewBag.ReturnUrl = returnUrl;
return View();
}
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public ActionResult ResetPass(LoginModel model, string returnUrl)
{
if (WebSecurity.UserExists(model.UserName))
{
string ptoken = WebSecurity.GeneratePasswordResetToken(model.UserName, 190);
//change to be as secure as you choose
string tmpPass = Membership.GeneratePassword(10, 4);
WebSecurity.ResetPassword(ptoken, tmpPass);
//add your own email logic here
ViewData["msg"] = "Your new password is: " + tmpPass;
return View(model);
}
else
{
ModelState.AddModelError("", "The user name wasn't found.");
}
return View(model);
}
3. Add this code to the Login.aspx view:
<p>
<%: Html.ActionLink("Reset", "ResetPass") %> your forgotten passord?
</p>
4. Now you should get this result on the login page:
And when clicked:
Sometimes it’s handy to grab either a username or email address (why not both?) from active directory. Below are the steps I believe you’ll need to get going quickly. In my example, I’m using VS2012 and .net 4.5.
1. Set your app to use windows authentication, you’ll need to set these to debug in VS:
Your web.config:
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.5" />
<httpRuntime targetFramework="4.5" />
<authentication mode="Windows" />
<identity impersonate="true" />
<authorization>
<allow users="*" />
</authorization>
</system.web>
<system.webServer>
<validation validateIntegratedModeConfiguration="false" />
</system.webServer>
</configuration>
Your project settings:
2. Now in your application, add a reference to System.DirectoryServices:
3. And in your code file:
using System.DirectoryServices;
4. A little function to search through active directory:
private string uEmail(string uid)
{
DirectorySearcher dirSearcher = new DirectorySearcher();
DirectoryEntry entry = new DirectoryEntry(dirSearcher.SearchRoot.Path);
dirSearcher.Filter = "(&(objectClass=user)(objectcategory=person)(mail=" + uid + "*))";
SearchResult srEmail = dirSearcher.FindOne();
string propName = "mail";
ResultPropertyValueCollection valColl = srEmail.Properties[propName];
try
{
return valColl[0].ToString();
}
catch
{
return "";
}
}
5. And finally, how you can use:
string uName = "";
uName = uEmail(HttpContext.Current.User.Identity.Name.Replace(@"yourdomain\", ""));
Hope you enjoy! You can also use this method to retrieve other AD details (groups, full name, etc.).
Titanium SDK is a great tool for developing cross platform mobile apps. But if you’ve got a Samsung Galaxy (S3 or S4) and noticed that with the new updates, even with USB Dev Debug on, Titanium still can’t deploy to your device, chances are you just need to install the Samsung ADB driver. Below is the official link. [Beware of non-Samsung links on the web.]
http://developer.samsung.com/android/tools-sdks/Samsung-Andorid-USB-Driver-for-Windows
If you’ve ever wanted to test a string to see if a word exists, but can’t use “.contains” because it doesn’t respect whole words (not that I would expect it to), below is a fast, simple way using Regex:
Of course you’ll need: using System.Text.RegularExpressions;
Now setup your pattern and Regex object:
string pattern = @"\bteam\b"; Regex rx = new Regex(pattern, RegexOptions.IgnoreCase);
Now create a match:
Match m = rx.Match("Teamwork is working together.");
Does the word exist:
if (m.Success) {
//no
}
Try again using a string with the whole word:
Match m = rx.Match("I am just part of the team.");
Does the word exist now?:
if (m.Success) {
//yes!
}
Of course, this is just a tiny portion of the power of Regex. Happy matching!
If you’ve ever used .net to send email messages (and I hope you have!) you may have wanted to send the message from or to not only an address, but also include a name. The ‘display name’ is the name that appears in many email clients instead of the address (think ‘Chris Bitting’ instead of ‘cbitting@something.com’). .Net honors the email standard of “Display Name <email@domain.com>”.
Below is a quick example on how this looks in vb.net:
Dim mail As New System.Net.Mail.MailMessage("""Some Body"" <person@company.com>", """A Different Person"" <person2@company2.com>", "Subject", "Body")
Below is a full example on an email function (include Imports System.Net.Mail): Continue reading “.net SMTP – Sending An Email Message With A Display Name”
If you run WordPress on Windows (and who doesn’t?) and have the need to block specific user agents (bots, crawlers, browsers) below is a decent way I’ve found that uses rewriting rules and works along side the needed WordPress rules:
Adding this rule to your web.config will block the request from the specified agent(s):
<rule name="RequestBlockingRule1" stopProcessing="true">
<match url=".*" />
<conditions>
<add input="{HTTP_USER_AGENT}" pattern="agent1|agent2|agent3" />
</conditions>
<action type="CustomResponse" statusCode="403"
statusReason="Forbidden: Access is denied."
statusDescription="You do not have permission to view this page." />
</rule>
Continue reading “IIS / WordPress – Blocking User Agents using Rewrite Rules”
Chris Bitting 