Setting a User’s `manager` Property in DirectoryServices

I was trying to run some code earlier today to set a user's manager in ActiveDirectory using System.DirectoryServices, C#. I had code that did the following (actual code has a bunch of reusable methods for doing things like loading up UserPrincipal and DirectoryEntry objects, saving values, not hard coding key names etc - I am simplifying it here to get it all in one place):
using (var pc = new PrincipalContext(ContextType.Domain))
{
    // get the user's directory entry
    var up = UserPrincipal.FindByIdentity(pc, userName);
    var de = (DirectoryEntry)up.GetUnderlyingObject();
    
    // get manager directoryEntry
    var managerUp = UserPrincipal.FindByIdentify(pc, managerUserName);
    var managerDe = (DirectoryEntry)up.GetUnderlyingObject();
    
    // get the manager's distinguished name
    string managerDN = managerDe.Properties["distinguishedName"][0].ToString();

    // set the manager's distinguished name as the value for the `manager` property on the users DirectoryEntry and save
    de.Properties["manager"].Value = managerDN;
    de.CommitChanges();
}
However, when I ran this, I got a System.DirectoryServices.DirectoryServicesCOMException telling me:
A constraint violation occurred
Eventually, I was able to figure out the issue (leading to this post, which will hopefully help someone else out in the future): when setting the `manager` property of a DirectoryEntry, you should not set it to a string that includes the DistinguishedName of the manager. Rather, you want to retrieve the object returned by DirectoryServices for the DistinguishedName of the manager, and set that object value directory. So the end of the code excerpt should look like this:
    object managerDN = managerDe.Properties["distinguishedName"][0];

    // set the manager's distinguished name as the value for the `manager` property on the users DirectoryEntry and save
    de.Properties["manager"].Value = managerDN;
Once I changed it to use the object value of the Distinguished name, I was able to CommitChanges to Active Directory successfully.

Gematria Class Library on GitHub

I just pushed the initial version of my first public GitHub repository: Gematria (Gematriya). Gematria is a .Net Class Library for calculating the Gematria value of strings of Hebrew text, or convert numbers into Hebrew Text.
Gematria or gimatria (Hebrew: גימטריא/גימטריה‎ gēmaṭriyā) is a traditional Jewish system of assigning numerical value to a word or phrase (Wikipedia)
You can learn more about Gematria in one of these sites (1, 2) This library exposes the following methods, all available through the static Calculator class:
  • GetGematriaValue
    • Calculates the gematria value for all Hebrew letters in the given string.
    • Ignores all characters that are not Hebrew letters.
  • GetNumericGematriaValue
    • Calculates the gematria value for a string that is intended to represent a number (example: a year in the Hebrew calendar or page in a Hebrew book).
    • This function expects that the given string will contain only one word, and will throw an error if more than one word is included
    • (this is because a string of Hebrew characters representing a number will never consist of multiple words).
    • Ignores non-Hebrew characters and punctuation in the given word.
  • ConvertToGematriaNumericString
    • Convert a number into its Gematria Numeric Representation
As explained in the links above, there are different systems that can be used for translating Hebrew letters into numeric equivalents. The Gematria library allows use of the following four methods:
  1. Absolute Value (מספר הכרחי):
    • Alef (א) through Tet (ט) are 1-9
    • Yud (י) through Tzadik (צ) are 10-90, increasing in increments of 10
    • Kuf (ק) through Tav (ת) are 100-400, increasing in increments of 100
    • The five final forms (sofiyot | סופיות) in the alphabet are given the equivalent values to their non-final analogs
    • This is the most standard method, used by default
  2. Absolute Alternate Value
    • The same as the Absolute Value, except that the Final Forms continue from 500-900
  3. Ordinal Value (מספר סידורי)
    • Alef starts at 1. Each following letter continues in sequence, with the final forms continuing the sequence (Tav = 22, Final Tzadik = 27)
  4. Reduced Value (מספר קטן)
    • Calculated the value of each letter using the absolute system, truncating all zeros
    • Leads to a sequence of values in order of letters: 1-9, 1-9, 1-9
The code is released under the MIT License

Could not load type ‘System.Web.Razor.Parser.SyntaxTree.CodeSpan’ from assembly ‘System.Web.Razor

I am working with an ASP.net MVC4 project with WebAPI, and upgraded/installed a number of nuget packages (and stupidly did not test after each one). When the dust settled, I tried to load an API page in my browser and got the following error message:

"Could not load type 'System.Web.Razor.Parser.SyntaxTree.CodeSpan' from assembly 'System.Web.Razor"

Eventually, I was able to resolve the error by removing the following from my web.config and app.config files:
<runtime>
  <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
    <!-- Begin Remove -->
    <dependentAssembly>
      <assemblyIdentity name="System.Web.Razor" publicKeyToken="31bf3856ad364e35" culture="neutral" />
      <bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
    </dependentAssembly>
    <!-- End Remove -->
  </assemblyBinding>
</runtime>
I would guess that one of the packages that I installed added this reference, which had a conflict with a different version of the same assembly in the GAC. In any event, it fixed the error (and did not cause any apparent new errors). Posting in case it may help you out with a similar error.

Force WebAPI to return JSON by Default for Html GET Requests

Currently, the default response type of for Web API requests is XML. By the time it comes out of beta, it will be the default (source - this is mentioned by Hanselman towards the end of the post). However, if you want to activate this right now, how should you do it? Two steps:
  1. Set a JSON formatter as the first Formatter in the Web API Config Formatters collection
  2. Set "text/html" as an accepted media type for this formatter
WebAPI includes a JSON Serializer by default: DataContractJsonSerializer. However, no one wants to use it, and for good reason: lots of issues with different types, slow performance, bad date formatting and more. Thankfully, WebAPI allows you to switch customize the data formatters used for different content types. Bloggers have recommended a number of different approaches. What seems to be the most promising is Henrik Nielsen's JsonNetFormatter (using Json.NET to handle the JSON serialization) combined with a fix for a DateTime serialization issue (Hanselman also implies that this will be the default in post-beta WebAPI). After you add the code for the JsonNetFormatter, you can set this up as the default Json data formatter by doing the following:
protected void Application_Start()
{
    ...

    JsonSerializerSettings serializerSettings = new JsonSerializerSettings();
    serializerSettings.Converters.Add(new IsoDateTimeConverter());
    GlobalConfiguration.Configuration.Formatters.Insert(0, new JsonNetFormatter(serializerSettings));

    ...
}
Once you have done this, any request that comes in to the API that asks for json (setting a header to accept content of type application/json, utilizing the facility in WebAPI for content negotiation) will receive Json content formatter using the JsonNetFormatter class. However, if you want to just test this out in your browser, you will still get XML content. This is because a plan request from your browser is for type text/html, which translates to xml in the Web API universe. Though the Json will be returned automatically if you explicitly request json content (or if you use a function that requests this content type, like the $.ajax function in jQuery), if you want to test out the json in your browser, you will be out of luck using the standard configuration. To get around this, you need to set the JsonNetFormatter to support the "text/html" media type. This will allow it to respond to requests made from the browser (and since the JsonNetFormatter is now the first Formatter in the Formatters collection, it will be used by default). You can do this as follows:
protected void Application_Start()
{
    ...

    JsonSerializerSettings serializerSettings = new JsonSerializerSettings();
    serializerSettings.Converters.Add(new IsoDateTimeConverter());
    var jsonFormatter = new JsonNetFormatter(serializerSettings);
    jsonFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue("text/html"));
    GlobalConfiguration.Configuration.Formatters.Insert(0, jsonFormatter);

    ...
}

Zithromax For Sale

Scenario: you have a List<string> Zithromax For Sale, collection where the contents could be alpha, numeric, or alphanumeric. If you just sort the collection using the built-in Sort() method, Zithromax use, Japan, craiglist, ebay, overseas, paypal, it will use string.CompareTo(), treating each item in the collection as a string, Zithromax price, coupon. Purchase Zithromax for sale, Thus a collection with the following values ["1", "44", Zithromax blogs, Generic Zithromax, "22", 4", Zithromax photos, Kjøpe Zithromax på nett, köpa Zithromax online, "5"] will end up being sorted as ["1", "22", online buying Zithromax hcl, Zithromax images, "4", "44", Zithromax from canada, Zithromax online cod, "5"] - even though you might want the items to be treated as numbers (in which case they would be sorted as ["1", "4", real brand Zithromax online, Purchase Zithromax online no prescription, "5", "22", Zithromax mg, Order Zithromax from United States pharmacy, "44"].

The solution to this is to use a custom comparer class, Zithromax dosage. Purchase Zithromax online, I put the following together:

public class NumericStringSort : IComparer {

int IComparer.Compare(string a, string b) {
decimal aDec;
decimal bDec;
if (decimal.TryParse(a, purchase Zithromax, Zithromax over the counter, out aDec) && decimal.TryParse(b, out bDec)) {
return aDec.CompareTo(bDec);
} else {
return a.CompareTo(b);
}
}

public static IComparer NumericStringSorter() {
return (IComparer) new NumericStringSort();
}
}


As you can see, rx free Zithromax, Buy Zithromax no prescription, the class implements the IComparer interface. If both of the strings can be converted into decimals, cheap Zithromax no rx, Zithromax recreational, then the decimal comparison is used. Otherwise the string comparison is used, low dose Zithromax. Zithromax brand name, You can see a usage example through the following set of unit tests (as you can see, it also handles mixed alphanumeric sets gracefully, is Zithromax addictive, Zithromax schedule, sorting all numeric items to the front of the list in numeric order, followed by all alpha entries in alphabetical order):
[TestFixture]
public class NumericStringSortTests {

[Test]
public void TestNumericSort_AllNumeric() {
List items = new List { "1", Zithromax used for, Australia, uk, us, usa, "44", "22", my Zithromax experience, Zithromax gel, ointment, cream, pill, spray, continuous-release, extended-release, "4", "5" };
items.Sort(NumericStringSort.NumericStringSorter());
List expectedItems = new List { "1", Zithromax without a prescription, Online buying Zithromax, "4", "5", cheap Zithromax, Order Zithromax from mexican pharmacy, "22", "44" };
Assert.IsTrue(items.SequenceEqual(expectedItems));
}

[Test]
public void TestNumericSort_MixesAlphaNumeric() {
List items = new List { "a", online buy Zithromax without a prescription, Zithromax price, "c", "d", Zithromax duration, Zithromax pics, "b", "1", "2", "22", "3" };
items.Sort(NumericStringSort.NumericStringSorter());
List expectedItems = new List { "1", "2", "3", "22", "a", "b", "c", "d" };
Assert.IsTrue(items.SequenceEqual(expectedItems));
}

[Test]
public void TestNumericSort_AllAlpha() {
List items = new List { "a", "c", "d", "b" };
items.Sort(NumericStringSort.NumericStringSorter());
List expectedItems = new List { "a", "b", "c", "d" };
Assert.IsTrue(items.SequenceEqual(expectedItems));
}
}


This is something that I have needed on previous occasions - perhaps it may be of use to someone else.

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Flagyl For Sale

Flagyl For Sale, If you are trying to query a MS Excel (.xls, .xlsx, .xlsb) or MS Access (.mdb, .accdb) file on a 64-bit server and are getting one of the following error messages:


  • The 'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine.

  • The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.


Then it is necessary to install 2010 Office System Driver Beta: Data Connectivity Components on the server (the reason for this is the old Jet4.0 drover does not exist for 64 bit, and the ACE driver needed to read the newer formats is not installed by default). If you are using a version of Windows with UAC enabled, Flagyl pictures, Flagyl samples, be sure to do this as Administrator.

After installing the components, Flagyl overnight, Where can i buy cheapest Flagyl online, use the following connection string formats (from the page linked-to above):


  • Using OLEDB, set the Provider argument of the ConnectionString property to “Microsoft.ACE.OLEDB.14.0”, Flagyl from mexico. Ordering Flagyl online, Example: "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=Path_To_File"

  • Using OLEDB and connecting to a Microsoft Office Excel file, add “Excel 14.0” to the Extended Properties of the OLEDB connection string defined in the previous bullet point.

  • Using ODBC:

    • Connecting to Microsoft Office Access (.mdb or .accdb): set the Connection String to “Driver={Microsoft Access Driver (*.mdb, Flagyl schedule, Buy Flagyl without a prescription, *.accdb)};DBQ=path to mdb/accdb file”

    • Connecting to Microsoft Office Excel (.xls, .xlsx, order Flagyl online c.o.d, Flagyl street price, .xlsb): set the Connection String to “Driver={Microsoft Excel Driver (*.xls, *.xlsx, Flagyl mg, Flagyl dosage, *.xlsm, *.xlsb)};DBQ=path to xls/xlsx/xlsm/xlsb file”



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