How do I keep a datetime field in ASP.NET null
I have a datetime field in a gridview. I need the date field to be null or empty if the database returns either null, "", or 1/1/0001. How does one achieve this? I seem to be having a brain freeze.…
Visual Studio Code – How to configure my libraries and dependencies to compile my App as static
I am Programming an App with visual studio 2022, in c++, x64 with libraries installed with help of vcpkg. They are dynamic link libraries. I want to use my App as static, to run it in another PC without need…
Visual Studio Code – Why does my code involving "string" crash when I put it into a function?
I am trying to run a simple program in C++ which basically counts the amount of symbols using the length() function from the <string> library of C++. Here's my custom function: #include <iostream> #include <string> using namespace std; string TrimTextFunction()…
Asp.net – How to update only fields present in a form for a model in EF Core?
To simplify the problem, in C# I have a model like this public class Person { [DatabaseGenerated(DatabaseGeneratedOption.Identity)] [Key] [MaxLength(128)] public string? Id { get; set; } [MaxLength(256)] public string PersonName { get; set; } public short PersonAge { get; set;…
Ubuntu – What happens when the integer value with more than 52-bit of mantissa is stored in the double data type?
#include <stdio.h> int main() { double a =92233720368547758071; printf("value=%lfn", a); int i; char *b = &a; for (i = 0; i < 8; i++) { printf("%d byte (%p)value: <%d>n", i + 1, b,*b); b++; } return 0; } (compiler details):…
Asp.net – Does async/await with a non await function and Task creates a new thread?
I am new to async/await and I can not wrap my head around the thread creation. My queries are:- Does async function without await creates a new thread to cater getData() as Main thread will not be blocked? What is…
Newtonsoft.Json.Schema is not validating JSON payload correctly against a JSON schema
Newtonsoft.Json.Schema is not validating JSON input correctly against a JSON schema In below example schema validation is returning true for the below payload JSON, even though: for "mCRO" nullable is set to false iNumber" has varchar(10) Why are these errors…
Asp.net – InvalidCastException: Unable to cast object of type 'System.Linq.OrderedEnumerable to type 'System.Collections.Generic.List
In Asp.Net 4.8 web app, the following works. I'm using PagedList for pagination. private AppDbContext db = new AppDbContext(); private IQueryable<Border> Broders; public ViewResult Index(int? page) { Broders = from s in db.Broders select s; if (SearchColumn == "T1") {…
C free() on Ubuntu VM, a question regarding heap memory
A simple program to allocate and free heap memory: int main(int argc, char **argv) { char *b1, *b2, *b3, *b4, *b_large; b1 = malloc(8); memset(b1, 0xaa, 8); b2= malloc(16); memset(b2, 0xbb, 16); b3 = malloc(25); memset(b3, 0xcc, 25); b4= malloc(1000);…
Visual Studio Code – How to define a function based on the platform in MAUI?
In my .NET8 MAUI application, I have a few functions for every platform but most of the code is the same. I saw somewhere that I could do something like: #if iOS public async Task<string> Register(NSData rawToken) { var nativeToken…