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c# Programming Glossary: byhttp://stackoverflow.com/questions/142003/cross-thread-operation-not-valid-control-accessed-from-a-thread-other-than-the of line #1 if condition. The loading task is again done by the parent thread and not the third that I spawned. I don't..
Create Excel (.XLS and .XLSX) file from C# [closed] http://stackoverflow.com/questions/151005/create-excel-xls-and-xlsx-file-from-c-sharp actively updated and documented as well. Also as noted by @ мЦа ионов below EPPlus has support for Pivot Tables and ExcelLibrary..
How to properly clean up Excel interop objects http://stackoverflow.com/questions/158706/how-to-properly-clean-up-excel-interop-objects for the Worksheets COM object which didn't get released by my code because I wasn't aware of it and was the cause why Excel..
What is the difference between a field and a property in C#? http://stackoverflow.com/questions/295104/what-is-the-difference-between-a-field-and-a-property-in-c while not affecting the external way they are accessed by the things that use your class. public class MyClass this is.. but only exposes the contract that will not be affected by the underlying field public string MyField get return _myField..
How do you convert Byte Array to Hexadecimal String, and vice versa? http://stackoverflow.com/questions/311165/how-do-you-convert-byte-array-to-hexadecimal-string-and-vice-versa find an answer that neatly explains how you can convert a byte array to a hexadecimal string and vice versa. c# bytearray.. a byte array to a hexadecimal string and vice versa. c# bytearray hex share improve this question Either public static.. question Either public static string ByteArrayToString byte ba StringBuilder hex new StringBuilder ba.Length 2 foreach..
Deserialize JSON into C# dynamic object? http://stackoverflow.com/questions/3142495/deserialize-json-into-c-sharp-dynamic-object share improve this question Unfortunately the blog post by Nikhil Kothari doesn't work with .NET 4 RTM. An alternative..
http://stackoverflow.com/questions/441309/why-are-mutable-structs-evil then all automatic copies resulting from being passed by value will be the same. If you want to change it you have to.. If you want to change it you have to consciously do it by creating a new instance of the struct with the modified data...
Casting vs using the 'as' keyword in the CLR http://stackoverflow.com/questions/496096/casting-vs-using-the-as-keyword-in-the-clr as fast as as and null check with modern JITs as shown by the code below using System using System.Diagnostics using System.Linq..
http://stackoverflow.com/questions/5181777/use-of-application-doevents the new await and async keywords. Inspired in small part by the trouble caused by DoEvents and threads but in large part.. keywords. Inspired in small part by the trouble caused by DoEvents and threads but in large part by WinRT's api design.. trouble caused by DoEvents and threads but in large part by WinRT's api design that requires you to keep your UI updated..
What is the difference between Decimal, Float and Double in C#? http://stackoverflow.com/questions/618535/what-is-the-difference-between-decimal-float-and-double-in-c a floating decimal point as well the result of dividing 1 by 3 can't be exactly represented for example. As for what to use.. This is usually suitable for any concepts invented by humans financial values are the most obvious example but there..
What does the [Flags] Enum Attribute mean in C#? http://stackoverflow.com/questions/8447/what-does-the-flags-enum-attribute-mean-in-c MyColor.Red MyColor.Green MyColor.Blue Note that Flags by itself doesn't change this at all all it does is enable a nice.. this at all all it does is enable a nice representation by the .ToString method Flags enum SuitsFlags Spades 1 Clubs 2.. not work as one might expect in bitwise operations because by default the values start with 0 and increment. Incorrect declaration..
Is there a way to check if a file is in use? http://stackoverflow.com/questions/876473/is-there-a-way-to-check-if-a-file-is-in-use back to the filesystem and throw an error File in use by another process . I would like to find a way around this but.. this but all my Googling has only yielded creating checks by using exception handling. This is against my religion so I was.. because it is still being written to or being processed by another thread or does not exist has already been processed..
Why Would I Ever Need to Use C# Nested Classes [duplicate] http://stackoverflow.com/questions/1083032/why-would-i-ever-need-to-use-c-sharp-nested-classes ... public static BankAccount MakeChequingAccount ... By nesting the classes like this I make it impossible for third..
How does the C# compiler detect COM types? http://stackoverflow.com/questions/1093536/how-does-the-c-sharp-compiler-detect-com-types c# com compiler c# 4.0 share improve this question By no means am I an expert in this but I stumbled recently on what..
C# Reading a File Line By Line http://stackoverflow.com/questions/1271225/c-sharp-reading-a-file-line-by-line Reading a File Line By Line I am trying to read some text files where each line needs.. buffering perfect for Where etc. Note that if you use OrderBy or the standard GroupBy it will have to buffer the data in memory.. etc. Note that if you use OrderBy or the standard GroupBy it will have to buffer the data in memory ifyou need grouping..
Best and shortest way to evaluate mathematical expressions http://stackoverflow.com/questions/1437964/best-and-shortest-way-to-evaluate-mathematical-expressions are many algorithms to evaluate expressions for example By Recursive Descent Shunting yard algorithm Reverse Polish notation..
How to create and connect custom user buttons/controls with lines using windows forms http://stackoverflow.com/questions/15819318/how-to-create-and-connect-custom-user-buttons-controls-with-lines-using-windows from a toolbar or inserted by right mouse click dropdown By dragging from one control to another they should be connected..
How to add a Blend Behavior in a Style Setter http://stackoverflow.com/questions/1647815/how-to-add-a-blend-behavior-in-a-style-setter collections and attached properties to make this all work. By analogy with Interaction.Behaviors the property you target is..
What's the point of the var keyword? http://stackoverflow.com/questions/209199/whats-the-point-of-the-var-keyword var thing new SomeGeneric VeryLongTypename NestedTypename By reducing the duplication of information errors are eliminated...
Sharing sessions across applications using the ASP.NET Session State Service http://stackoverflow.com/questions/2868316/sharing-sessions-across-applications-using-the-asp-net-session-state-service apps use native .net sessionState stored in sqlserver. By using the same machine key and making a small tweak to a stored..
How do I assign by “reference” to a class field in c#? http://stackoverflow.com/questions/2980463/how-do-i-assign-by-reference-to-a-class-field-in-c public class Y public Y ref string example example Updated By Y public class Z private string _Example public Z ref string.. string example this._Example example this._Example Updated By Z var x new X When running the above code the output is X Updated.. new X When running the above code the output is X Updated By Y And not X Updated By Y Updated By Z As I had hoped. It seems..
Default visibility for C# classes and members (fields, methods, etc)? http://stackoverflow.com/questions/3763612/default-visibility-for-c-sharp-classes-and-members-fields-methods-etc access. ... Delegates behave like classes and structs. By default they have internal access when declared directly within..
http://stackoverflow.com/questions/4331189/datetime-vs-datetimeoffset DateTimeOffset is a representation of instantaneous time . By that I mean a moment in time that is universal for everyone..
C# - The foreach identifier and closures http://stackoverflow.com/questions/512166/c-sharp-the-foreach-identifier-and-closures is the first one safe or must you do the second one By safe I mean is each thread guaranteed to call the method on..
How can I evaluate a C# expression dynamically? http://stackoverflow.com/questions/53844/how-can-i-evaluate-a-c-sharp-expression-dynamically s c# reflection eval share improve this question By using compile on the fly like this example shows. Or by using..
Can anyone explain IEnumerable and IEnumerator to me? http://stackoverflow.com/questions/558304/can-anyone-explain-ienumerable-and-ienumerator-to-me while bat.MoveNext bar Foo bat.Current ... By functionally equivalent I mean that's actually what the compiler..
http://stackoverflow.com/questions/623104/byte-to-hex-string a byte to a string Every time I attempt it I get System.Byte instead of the value. Also how do I get the value in Hex instead.. base64 Convert.ToBase64String data Result AQIECBAg Added By OP My test show the fastest is http stackoverflow.com a 18574846..
LINQ - Left Join, Group By, and Count http://stackoverflow.com/questions/695506/linq-left-join-group-by-and-count Left Join Group By and Count Let's say I have this SQL SELECT p.ParentId COUNT..
http://stackoverflow.com/questions/725043/dynamic-enum-in-c-sharp built it runs itself and generates the MyEnums.dll file. By the way it helps to change the build order of your project so..
How is Math.Pow() implemented in .Net Framework? http://stackoverflow.com/questions/8870442/how-is-math-pow-implemented-in-net-framework the same code in C check this answer for the reason why. By the way the source code for the CRT is also available if you..
Most efficient way to find all exe files on disk using C#? http://stackoverflow.com/questions/10965280/most-efficient-way-to-find-all-exe-files-on-disk-using-c attributes NOT LIKE 'D ' AND Days Old TO_INT ' day ' ORDER BY Creation Date Time DESC source could be something like c .exe.. attributes NOT LIKE 'D ' AND Days Old TO_INT '180' ORDER BY Creation Date Time DESC At the same time you may wish run any..
jQuery AutoComplete multiple Output http://stackoverflow.com/questions/12855617/jquery-autocomplete-multiple-output WHERE something_else LIKE N' prefixText ' ORDER BY thatOther_thing ASC db transaction using SqlDataReader reader.. FROM somewhere WHERE thingy LIKE N' prefixText ' ORDER BY previousThingy ASC db transaction using SqlDataReader reader..
http://stackoverflow.com/questions/1752004/sequential-guid-generator-c-sharp significant byte in Guid ByteArray for SQL Server ORDER BY clause 10 the most significant byte in Guid ByteArray for SQL.. significant byte in Guid ByteArray for SQL Server ORDERY BY clause SqlOrderMap new 3 2 1 0 5 4 7 6 9 8 15 14 13 12 11 10..
When is it better to write “ad hoc sql” vs stored procedures [duplicate] http://stackoverflow.com/questions/2734007/when-is-it-better-to-write-ad-hoc-sql-vs-stored-procedures for example forget about using DISTINCT TOP UNION GROUP BY OR etc. so you really cannot count on this for performance... tblPEEPS WHERE AGE 18 AND LASTNAME LIKE ' What the` ORDER BY LASTNAME DESC ... then you pretty much can't do this with stored..
http://stackoverflow.com/questions/289010/c-sharp-list-sort-by-x-then-y the functional equivalent of SELECT from Table ORDER BY x y We have a class that contains a number of sorting functions..
Too Many Left Outer Joins in Entity Framework 4? http://stackoverflow.com/questions/2916830/too-many-left-outer-joins-in-entity-framework-4 . BestSeller AS Extent3 ON Extent2 . id Extent3 . id ORDER BY Extent3 . rating ASC c# entity framework optimization entity..
http://stackoverflow.com/questions/380595/multimap-in-net provided with the distribution. THIS SOFTWARE IS PROVIDED BY SOLUTIONS DESIGN ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES..
LINQ to SQL using GROUP BY and COUNT(DISTINCT) http://stackoverflow.com/questions/448203/linq-to-sql-using-group-by-and-countdistinct to SQL using GROUP BY and COUNT DISTINCT I have to perform the following SQL query.. FROM TPOLL_ANSWER AS t0 WHERE t0 . poll_nbr @p0 GROUP BY t0 . answer_nbr AS t1 @p0 Input Int Size 0 Prec 0 Scale 0 16.. FROM dbo . Customers AS t0 WHERE t0 . CustomerID @p0 GROUP BY t0 . Country AS t1 @p0 Input NVarChar Size 0 Prec 0 Scale 0..
problem using Oracle parameters in SELECT IN http://stackoverflow.com/questions/6155146/problem-using-oracle-parameters-in-select-in tablename a WHERE a.flokkurid IN 3857 3858 3863 3285 ORDER BY sjodategund rodun ...or SELECT FROM tablename a WHERE a.flokkurid.. FROM tablename a WHERE a.flokkurid IN strManyNumbers ORDER BY sjodategund rodun ...with this code using OracleCommand sel..
LINQ - Left Join, Group By, and Count http://stackoverflow.com/questions/695506/linq-left-join-group-by-and-count JOIN ChildTable c ON p.ParentId c.ChildParentId GROUP BY p.ParentId How can I translate this into LINQ to SQL I got stuck..
http://stackoverflow.com/questions/6970070/linq-lambda-group-by-with-sum @jobnum and job_group_ID like @sess GROUP BY job_group_job_number I've been messing around with it but can't..
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