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  • IQueryable<T> Extension Method not working

    - by Micah
    How can i make an extension method that will work like this public static class Extensions<T> { public static IQueryable<T> Sort(this IQueryable<T> query, string sortField, SortDirection direction) { // System.Type dataSourceType = query.GetType(); //System.Type dataItemType = typeof(object); //if (dataSourceType.HasElementType) //{ // dataItemType = dataSourceType.GetElementType(); //} //else if (dataSourceType.IsGenericType) //{ // dataItemType = dataSourceType.GetGenericArguments()[0]; //} //var fieldType = dataItemType.GetProperty(sortField); if (direction == SortDirection.Ascending) return query.OrderBy(s => s.GetType().GetProperty(sortField)); return query.OrderByDescending(s => s.GetType().GetProperty(sortField)); } } Currently that says "Extension methods must be defined in a non-generic static class". How do i do this?

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  • How to Integrate ILMerge into C#/VB.NET (MSBuild) Projects to Merge Assemblies?

    - by AMissico
    I want to merge one .NET DLL assembly and one C# Class Library project referenced by a VB.NET Console Application project into one command-line console executable. I can do this with ILMerge from the command-line, but I want to integrate this merging of reference assemblies and projects into the Visual Studio project. From my reading, I understand that I can do this through a MSBuild Task or a Target and just add it to a C#/VB.NET Project file, but I can find no specific example since MSBuild is large topic. How do I integrate ILMerge into a Visual Studio (C#/VB.NET) project, which are just MSBuild projects, to merge all referenced assemblies (copy-local=true) into one assembly? How does this tie into a possible ILMerge.Targets file?

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  • Collect all extension methods to generic class in another generic class

    - by Hun1Ahpu
    I'd like to create a lot of extension methods for some generic class, e.g. for public class SimpleLinkedList<T> where T:IComparable And I've started creating methods like this: public static class LinkedListExtensions { public static T[] ToArray<T>(this SimpleLinkedList<T> simpleLinkedList) where T:IComparable { //// code } } But when I tried to make LinkedListExtensions class generic like this: public static class LinkedListExtensions<T> where T:IComparable { public static T[] ToArray(this SimpleLinkedList<T> simpleLinkedList) { ////code } } I get "Extension methods can only be declared in non-generic, non-nested static class". And I'm trying to guess where this restriction came from and have no ideas.

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  • ASP.Net MVC view unable to see HtmlHelper extension method

    - by larryq
    Hi everyone, We're going through an ASP.Net MVC book and are having trouble with using an extenstion method within our view. The Extension method looks like this: using System; using System.Runtime.CompilerServices; using System.Web.Mvc; namespace MvcBookApplication { public static class HtmlHelperExtensions { public static string JQueryGenerator(this HtmlHelper htmlHelper, string formName, object model); } } We use the extension method in our view like this: <%=Html.JQueryGenerator("createmessage", ViewData.Model)%> The problem is, that line of code says JQueryGenerator isn't a recognized method of HtmlHelper. I believe we've got the correct references set in the web project, but are there other things we can check? There's no using statement for views, is there?

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  • Allow user to download file and filename on client defaults to no extension

    - by Andrew
    I want the user to be able to download a file from a page and have the filename extension in the Save As dialog box to be defaulted to nothing. This is the code I'm using: Response.ContentType = "text/plain" Response.AppendHeader("content-disposition", "attachment; filename=FILE") Response.WriteFile("C:\Temp\FILE") Response.End() FILE is the actual file. It is saved on the server without any extension. Currently, the "Save As Type" drop down list in the dialog defaults to "Text Document". How can I make it so that it defaults to "All Files"?

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  • Overriding LINQ extension methods

    - by Ruben Vermeersch
    Is there a way to override extension methods (provide a better implementation), without explicitly having to cast to them? I'm implementing a data type that is able to handle certain operations more efficiently than the default extension methods, but I'd like to keep the generality of IEnumerable. That way any IEnumerable can be passed, but when my class is passed in, it should be more efficient. As a toy example, consider the following: // Compile: dmcs -out:test.exe test.cs using System; namespace Test { public interface IBoat { void Float (); } public class NiceBoat : IBoat { public void Float () { Console.WriteLine ("NiceBoat floating!"); } } public class NicerBoat : IBoat { public void Float () { Console.WriteLine ("NicerBoat floating!"); } public void BlowHorn () { Console.WriteLine ("NicerBoat: TOOOOOT!"); } } public static class BoatExtensions { public static void BlowHorn (this IBoat boat) { Console.WriteLine ("Patched on horn for {0}: TWEET", boat.GetType().Name); } } public class TestApp { static void Main (string [] args) { IBoat niceboat = new NiceBoat (); IBoat nicerboat = new NicerBoat (); Console.WriteLine ("## Both should float:"); niceboat.Float (); nicerboat.Float (); // Output: // NiceBoat floating! // NicerBoat floating! Console.WriteLine (); Console.WriteLine ("## One has an awesome horn:"); niceboat.BlowHorn (); nicerboat.BlowHorn (); // Output: // Patched on horn for NiceBoat: TWEET // Patched on horn for NicerBoat: TWEET Console.WriteLine (); Console.WriteLine ("## That didn't work, but it does when we cast:"); (niceboat as NiceBoat).BlowHorn (); (nicerboat as NicerBoat).BlowHorn (); // Output: // Patched on horn for NiceBoat: TWEET // NicerBoat: TOOOOOT! Console.WriteLine (); Console.WriteLine ("## Problem is: I don't always know the type of the objects."); Console.WriteLine ("## How can I make it use the class objects when the are"); Console.WriteLine ("## implemented and extension methods when they are not,"); Console.WriteLine ("## without having to explicitely cast?"); } } } Is there a way to get the behavior from the second case, without explict casting? Can this problem be avoided?

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  • Add php extension (geoip.so) to Zend Studio for code validation

    - by Agustinus
    Hi everyone, just have a short question here. I've just installed new php extension (geoip.so) using pecl to /usr/local/zend/lib/php_extensions/ and added the extension to the php.ini. Run the code and it works just fine. But Zend Studio is giving warning of undefined geoip function. Try to add the directory path above to the include path of Zend Studio, still the warning exists. Any clue how to remove this warning? Thank you in advance!! /Agustinus

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  • Blank space after file extension -> weird FileInfo behaviour

    - by Axarydax
    Somehow a file has appeared in one of my directories, and it has space at the end of its extension - its name is "test.txt ". The weird thing is that Directory.GetFiles() returns me the path of this file, but I'm unable to retrieve file information with FileInfo class. The error manifests here: DirectoryInfo di = new DirectoryInfo("c:\\somedir"); FileInfo fi = di.GetFileSystemInfos("test*")[0] as FileInfo; //correctly fi.FullName is "c:\somedir\test.txt " //but fi.Exists==false (!) Is FileInfo class broken? Can I somehow retrieve information about this file? I really don't know how did that file appear on my file system, and I am unable to recreate some more of them. All of my attempts to create a new file with this type of extension have failed, but now my program is crashing when encoutering it. I can easily handle the exception when finding the file, but boy am I curious about this!

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  • Compiling my own PHP extension on Windows with Visual Studio 2008

    - by Mickey Shine
    I wrote a PHP extension and it could be compiled and run under linux successfully. But on windows, I met some problems. I did the compiling on windows according to http://blog.slickedit.com/?p=128 with PHP source version 5.2.10, and after the compiling it generated the dll file. But when I tried to use the dll file, it reported me the memory problems when starting Apache(Wamp server). And then I started the debugging process, it seemed that REGISTER_INI_ENTRIES() had problems. Here is the PHP extension source code, http://www.bluefly.cn/xsplit.tar.gz , and it works fine on Linux. But I also want to make it work on Windows. Sorry I am not a pro so that I hope someone can help me. Any help is appreciated and thanks in advance~

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  • Java JFileChooser getAbsoluteFile Add File Extension

    - by ikurtz
    i have this issue working but i would like to know if there is a better way of adding the file extension? what i am doing right now is: String filePath = chooser.getSelectedFile().getAbsoluteFile() + ".html"; im adding the extension hard coded. and then saving to it. just wondering if there is a more robust/logical manner this can be implemented? thank you for your time. EDIT: i ask this as i would like my app to be portable across platforms. so adding .html manually i may make this a windows only solution.

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  • Constrain generic extension method to base types and string

    - by hitch
    I want to have an extension method for XElement/XAttribute that allows me to apply a "ValueOrDefault" logic - perhaps with various slightly different implementations: ValueOrNull, ValueOrDefault, NumericValueOrDefault (which validates if the value is numeric), but I want to constrain these methods so that they can only work with ValueTypes or String (i.e. it does not really make sense to use any other reference types. Is it possible to do this with one implementation of each method, or will I have to have one where the constraint is "Structure" and one where the constraint is "String" - if I combine Structure and String in the generic constraint, I get the error : 'Structure' constraint and a specific class type constraint cannot be combined. An example of the current method implementation is as follows: <Extension()> _ Public Function ValueOrDefault(Of T As {Structure})(ByVal xe As XElement, ByVal defaultValue As T) As T If xe Is Nothing or xe.Value = "" Then Return defaultValue End If Return CType(Convert.ChangeType(xe.Value, GetType(T)), T) End Function

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  • creating PHP C/C++ extension modules using SWIG

    - by morpheous
    I have written some C/C++ extension modules for PHP, using the 'old fashioned way' - i.e. by using the manual way (as described by Sarah Golemon in her book). This is too fiddly for me, and since I am lazy, and would like to automate as much as possible. Also, I have used SWIG now to generate extensions to Python, and I am getting to like using it quite a lot. I am thinking of using SWIG to generate my future PHP extensions. I am using PHP v5.2 (and above) on my production servers. My questions are: Is SWIG PHP interface stable yet (i.e. ready for production)? If you answered yes to question 1 -are YOU using it in YOUR production site? Are there any 'gotchas' I need to be aware of when creating PHP extension ,modules using SWIG?

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  • Logs overwritten in CruiseCControl.NET when there is multiple MSBuild Tasks.

    - by James Poulose
    I have two MSBuild tasks in my CC.NET config. In the end of the execution, i can see two blocks of warnings/errors in the log and published email. But the problem is that the contents of both the blocks are the same and that is from the second MSBuild task!! In another way, the second MSBuild task overwrites the first log, and then creates another one for itself effectively creating two exactly identical block!!! Do anybody have any thoughts on this? I am happy to provide more information if you require about the environment and configuration. Thanks, James Poulose

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  • Ignore order of elements using xs:extension

    - by Peter Lang
    How can I design my xsd to ignore the sequence of elements? <root> <a/> <b/> </root> <root> <b/> <a/> </root> I need to use extension for code generation reasons, so I tried the following using all: <?xml version="1.0" encoding="UTF-8"?> <xs:schema targetNamespace="http://www.example.com/test" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:t="http://www.example.com/test" > <xs:complexType name="BaseType"> <xs:all> <xs:element name="a" type="xs:string" /> </xs:all> </xs:complexType> <xs:complexType name="ExtendedType"> <xs:complexContent> <xs:extension base="t:BaseType"> <xs:all> <!-- ERROR --> <xs:element name="b" type="xs:string" /> </xs:all> </xs:extension> </xs:complexContent> </xs:complexType> <xs:element name="root" type="t:ExtendedType"></xs:element> </xs:schema> This xsd is not valid though, the following error is reported at <!-- ERROR -->: cos-all-limited.1.2: An all model group must appear in a particle with {min occurs} = {max occurs} = 1, and that particle must be part of a pair which constitutes the {content type} of a complex type definition. Documentation of cos-all-limited.1.2 says: 1.2 the {term} property of a particle with {max occurs}=1 which is part of a pair which constitutes the {content type} of a complex type definition. I don't really understand this (neither xsd nor English native speaker :) ). Am I doing the wrong thing, am I doing the right thing wrong, or is there no way to achieve this? Thanks!

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  • Chrome Extension contenteditable get and set caret position

    - by jwize
    I am creating an extension where I need to insert a link into the gmail window. I am able to create a simple extension button in the top of the window and execute code that does replaces all the links. Now, I want to do add links in the contenteditable section as I type. It seems like there should be a simple way to replace text with a link in the document object model. If this is not true I need to do three things. Insert text from the current caret position Capture the caret position. Set the caret position by its offset. I have tried using window.getSelection within the gmail context(that is a body element that is set to contenteditable and embedded inside an iframe in the gmail tab) to get the current range and position. The selection is always empty and contains no ranges regardless of whether text is selected or not.

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  • FF extension: displaying an array of string elements in a sidebar

    - by sujay-jain
    I am developing a ff extension which displays a list of elements from an array (dynamic) in the sidebar. The array is dynamic and needs to be constructed in a function everytime the sidebar is opened (or any other event handler). Later, i will need to implement link functionality on parts of the string. What is the best way to go about this? I have created an empty sidebar and just know the label element as of now. menu, and menuitem dont work. What other elements can i use to display text in a good way which supports dynamic contruction. Is there some good tutorial/sample extension which i can see and learn?

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  • Improve performance of sorting files by extension

    - by DxCK
    With a given array of file names, the most simpliest way to sort it by file extension is like this: Array.Sort(fileNames, (x, y) => Path.GetExtension(x).CompareTo(Path.GetExtension(y))); The problem is that on very long list (~800k) it takes very long to sort, while sorting by the whole file name is faster for a couple of seconds! Theoretical, there is a way to optimize it: instead of using Path.GetExtension() and compare the newly created extension-only-strings, we can provide a Comparison than compares starting from the LastIndexOf('.') without creating new strings. Now, suppose i found the LastIndexOf('.'), i want to reuse native .NET's StringComparer and apply it only to the part on string after the LastIndexOf('.'). Didn't found a way to do that. Any ideas?

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  • Are google chrome extension "content" scripts sandboxed?

    - by jabapyth
    I was under the impression that the content_scripts were executed right on the page, but it now seems as though there's some sandboxing going on. I'm working on an extension to log all XHR traffic of a site (for debugging and other development purposes), and in the console, the following sniff code works: var o = window.XMLHttpRequest.prototype.open; window.XMLHttpRequest.prototype.open = function(){ console.log(arguments, 'open'); return o.apply(this, arguments); }; console.log('myopen'); console.log(window, window.XMLHttpRequest, window.XMLHttpRequest.prototype, o, window.XMLHttpRequest.prototype.open); This logs a message everytime an XHR is sent. When I put this in an extension, however, the real prototype doesn't get modified. Apparently the window.XMLHttpRequest.prototype that my script is seeing differs from that of the actual page. Is there some way around this? Also, is this sandboxing behavior documented anywhere? I looked around, but couldn't find anything.

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  • How extension methods work in background ?

    - by Freshblood
    I am just cuirous about behind of extension method mechanism.Some questions and answer appear in my mind. MyClass.OrderBy(x=>x.a).OrderBy(x=>x.b); I was guessing that mechanism was first orderby method works and order them by a member then returns sorted items in IEnumarable interface then next Orderby method of IEnumarable Order them for b paramater.But i am wrong when i look at this linq query. MyClass.Orderby(x=>x.a).ThenOrderBy(x=>x.b); this is slightly different and tells me that i am wrong.Because this is not ordering by a then b and not possible to have such result if i was right.This get me confuse enough... Similiar structure is possible to write withot extension methods as first query but second is not possible.This prove i am wrong . Can u explain it ?

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  • Creating Instance of Python Extension Type in C

    - by Brad Zeis
    I am writing a simple Vector implementation as a Python extension module in C that looks mostly like this: typedef struct { PyObject_HEAD double x; double y; } Vector; static PyTypeObject Vector_Type = { ... }; It is very simple to create instances of Vector while calling from Python, but I need to create a Vector instance in the same extension module. I looked in the documentation but I couldn't find a clear answer. What's the best way to do this?

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  • Extension method not working if I set controller property in Action, works in OnExecuting

    - by Blankman
    I have a class MyController that inherits from Controller, so all my controllers inherit from MyController. I have a property in MyController: public class MyController : Controller { public string SomeProperty {get;set;} } if I set this property in MyController's OnExecuting method, my HtmlHelper extension method works fine: public static string SomeExtension(this HtmlHelper htmlHelper) { StringBuilder sb = new StringBuilder(); string result = ""; var controller = htmlHelper.ViewContext.Controller as MyController; if (controller != null) { result = controller.SomeProperty; } return result; } it doesn't work if I set 'SomeProperty' in my controllers action method. I guess because I am doing 'as MyController' in the extension method? is there a way for it to work in both situations? I am using the value of SomeProperty to be outputted on my view pages.

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  • build a chrome extension in order to upload images (from clipboard)

    - by dayscott
    I wanted to write a simple chrome extension in order to substitute the following sequence of steps which i have to do very often for university: make screenshot of something edit screenshot in Paint save unnamend.png to harddrive upload unnamed.png to imageshack.us/pic-upload.de or any other website share link of image with others. I don't care which image upload service to use, i just want automize this use-case in order to save time (I already red and did a getting-started chrome extension and checked out their API, but that's it, this page: http://farter.users.sourceforge.net/blog/2010/11/20/accessing-operating-system-clipboard-in-chromium-chrome-extensions/ seemed useful, but i couldn't make it overwrite my systems clipboard - moreover i can't find a tutorial which helps me further).

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  • Where does MSBuild store it's options, and how can I change them?

    - by Neil
    We have a large project at work, under source control, including an MSBuild file to run the build. Recently, the build has stopped working on my machine (I get errors saying that 'zzz' is ambiguous in the namespace 'yyy'). The same MSBuild file is working fine on both the build server and my co-workers machines. I have tried cloning a new copy of the project from the shared repository, but even with a clean copy, the build is failing for me. I think it must be a problem with the MSBuild settings on my machine, but I haven't been able to find anything that tells me where they are. Any help would be appreciated, since I'm starting to think my machine has just gone crazy.

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