c#-4.0 – Page 3 – Tarik Billa

Potential .NET x86 JIT issue?

December 6, 2023 by Tarik

I can reproduce your behavior: R:\>csc /platform:x86 releasable.cs Microsoft (R) Visual C# 2010 Compiler version 4.0.30319.1 Copyright (C) Microsoft Corporation. All rights reserved. R:\>releasable Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object. at Test.Program.Main(String[] args) R:\>csc /o+ /platform:x86 releasable.cs Microsoft (R) Visual C# 2010 Compiler version 4.0.30319.1 Copyright (C) Microsoft … Read more

Dapper AddDynamicParams for IN statement with “dynamic” parameter name

December 6, 2023 by Tarik

I have just submitted a fix to the repository that allows any of the following to work correctly: by object (this worked previously): values.AddDynamicParams(new { ids = list }); or, by single name: values.Add(“ids”, list); or, as a dictionary: var args = new Dictionary<string, object>(); args.Add(“ids”, list); values.AddDynamicParams(args); I have not yet deployed to NuGet. … Read more

Can I join a table to a list using linq? [duplicate]

December 5, 2023 by Tarik

You probably found out that you can’t join an Entity Framework LINQ query with a local list of entity objects, because it can’t be translated into SQL. I would preselect the database data on the account numbers only and then join in memory. var accountNumbers = lstFarmerProfiles.Select(x => x.AccountNo).ToArray(); var duplicationChecklist = from profile in … Read more

mapping multiple tables to a single entity class in entity framework

December 5, 2023 by Tarik

You can use Entity Splitting to achieve this if you have the same primary key in both tables. modelBuilder.Entity<TestResult>() .Map(m => { m.Properties(t => new { t.Name, t.Text, t.Units /*other props*/ }); m.ToTable(“Result”); }) .Map(m => { m.Properties(t => new { t.Status, t.Analysis /*other props*/}); m.ToTable(“Test”); }); Here’s a useful article

How to parse my json string in C#(4.0)using Newtonsoft.Json package?

December 5, 2023 by Tarik

foreach (var data in dynObj.quizlist) { foreach (var data1 in data.QUIZ.QPROP) { Response.Write(“Name” + “:” + data1.name + “ ”); Response.Write(“Intro” + “:” + data1.intro + “ ”); Response.Write(“Timeopen” + “:” + data1.timeopen + “ ”); Response.Write(“Timeclose” + “:” + data1.timeclose + “ ”); Response.Write(“Timelimit” + “:” + data1.timelimit + “ ”); Response.Write(“Noofques” + “:” + data1.noofques + “ ”); foreach … Read more

What colon ( : ) means defining a class in c#?

December 2, 2023 by Tarik

In this case it means that the HomeController inherits the Controller class. You can read more details about inheritance here, but simply put – inheritance means that everything a Controller is, a HomeController is also. A HomeController is a more finely grained Controller class. It can also be used for implementation of interfaces http://msdn.microsoft.com/en-us/library/ms173156.aspx

Multiple classes in a single .cs file – good or bad? [duplicate]

December 2, 2023 by Tarik

Simply say good practice is one class from one file. BUT if your application is quite small you can use several classes in one file.

xml error: Non white space characters cannot be added to content

December 1, 2023 by Tarik

It looks like you’re attempting to load an XML file into an XDocument, but to do so you need to call XDocument.Load(“C:\\temp\\contacts.xml”); – you can’t pass an XML file into the constructor. You can also load a string of XML with XDocument.Parse(stringXml);. Change your first line to: var doc = XDocument.Load(“c:\\temp\\contacts.xml”); And it will work. … Read more

how to save exception in txt file?

November 30, 2023 by Tarik

Since you want to save the exception to C:\Error.txt, you don’t need Directory.Exists, Directory.CreateDirectory, or Server.MapPath(“~/Error.txt”). You can simply use StreamWriter like this: string filePath = @”C:\Error.txt”; Exception ex = … using( StreamWriter writer = new StreamWriter( filePath, true ) ) { writer.WriteLine( “—————————————————————————–” ); writer.WriteLine( “Date : ” + DateTime.Now.ToString() ); writer.WriteLine(); while( ex … Read more