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--- dev:csharp [2023/06/01 02:57] – adam
+++ dev:csharp [2024/12/08 03:53] (current) – [entityframework (my beloved)] adam
@@ Line 15: / Line 15: @@
 </code>
-so you make an abstract class `MyAbstractClass` and derive from it.
+so you make an abstract class ''MyAbstractClass'' and derive from it.
@@ Line 78: / Line 78: @@
 ======= entityframework (my beloved) =======
+install in your dev env:
+  dotnet tool install --global dotnet-ef
 install packages:
-* Microsoft.EntityFrameworkCore.Design
+  * Microsoft.EntityFrameworkCore.Design
-* Npgsql.EntityFrameworkCore.PostgreSQL (or whatever you like)
+  * Npgsql.EntityFrameworkCore.PostgreSQL (or whatever you like)
+  dotnet-ef dbcontext scaffold "Host=HOST;Database=DBNAME;Username=USERNAMEPassword=PASSWORD;IncludeErrorDetail=true;" Npgsql.EntityFrameworkCore.PostgreSQL
+migrations:
+  dotnet ef migrations add "name of migration"
+  dotnet ef database update --connection "Host=asdfasdfasdf etc"
+======= enum names =======
+forget "switch(enum) return string" functions, do it with decorators! https://stackoverflow.com/questions/479410/enum-tostring-with-user-friendly-strings
+make yourself this function:
+<code csharp>
+public static string GetDescription<T>(this T enumerationValue)
+    where T : struct
+{
+    Type type = enumerationValue.GetType();
+    if (!type.IsEnum)
+    {
+        throw new ArgumentException("EnumerationValue must be of Enum type", "enumerationValue");
+    }
+    //Tries to find a DescriptionAttribute for a potential friendly name
+    //for the enum
+    MemberInfo[] memberInfo = type.GetMember(enumerationValue.ToString());
+    if (memberInfo != null && memberInfo.Length > 0)
+    {
+        object[] attrs = memberInfo[0].GetCustomAttributes(typeof(DescriptionAttribute), false);
+        if (attrs != null && attrs.Length > 0)
+        {
+            //Pull out the description value
+            return ((DescriptionAttribute)attrs[0]).Description;
+        }
+    }
+    //If we have no description attribute, just return the ToString of the enum
+    return enumerationValue.ToString();
+}
+</code>
+and then all you have to do is use ''Description'' from ''System.ComponentModel'':
+<code csharp>
+private enum PublishStatusValue
+{
+    [Description("Not Completed")]
+    NotCompleted,
+    Completed,
+    Error
+};
+</code>
+======= what is the actual publish command =======
+specify output folder. I don't know what all the other bullshit it insists on dumping in the folder is.
+<code>
+dotnet publish -c Release -o ../publish
+</code>
+also you can't not get ''appsettings.Development.json'' to show up in release. your only option is to delete it manually.
+======= why is asp.net not accepting my frombody thing? =======
+microsoft replaced the working json parser with one that doesn't. https://devblogs.microsoft.com/dotnet/try-the-new-system-text-json-apis/
+fix:
+  - ''dotnet add package Microsoft.AspNetCore.Mvc.NewtonsoftJson --version [compatible version]''
+  - go find where services are being added; ''services.AddControllers().AddNewtonsoftJson();''. (hint: Builder.Services?)
+======= which is a field, which is a property? =======
+<code csharp>
+public class MyClass
+{
+    // this is a field.  It is private to your class and stores the actual data.
+    private string _myField;
+    // this is a property. When accessed it uses the underlying field,
+    // but only exposes the contract, which will not be affected by the underlying field
+    public string MyProperty
+    {
+        get
+        {
+            return _myField;
+        }
+        set
+        {
+            _myField = value;
+        }
+    }
+    // This is an AutoProperty (C# 3.0 and higher) - which is a shorthand syntax
+    // used to generate a private field for you
+    public int AnotherProperty { get; set; }
+}
+</code>
-//TODO: the rest
+src: https://stackoverflow.com/a/295109/1173856

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