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המשורר

•Created by המשורר on 7/6/2024 in #help

JsonSerialization Help

I have this class in C# (functionallity removed)

public class Command
{
    [JsonIgnore]
    public IEnumerable<Flag> Flags => _flags;
    [JsonIgnore]
    public IEnumerable<string> AllowedFlags => _allowedFlags;
    [JsonPropertyName("command")]
    public string Name { get; }

    [JsonPropertyName("allowedFlags")]
    private readonly HashSet<string> _allowedFlags;
    [JsonPropertyName("flags")]
    private readonly List<Flag> _flags = [];
    [JsonPropertyName("arguments")]
    private readonly List<string> _arguments;

public class Command
{
    [JsonIgnore]
    public IEnumerable<Flag> Flags => _flags;
    [JsonIgnore]
    public IEnumerable<string> AllowedFlags => _allowedFlags;
    [JsonPropertyName("command")]
    public string Name { get; }

    [JsonPropertyName("allowedFlags")]
    private readonly HashSet<string> _allowedFlags;
    [JsonPropertyName("flags")]
    private readonly List<Flag> _flags = [];
    [JsonPropertyName("arguments")]
    private readonly List<string> _arguments;

A record that allows parsing of multiple commands:

[JsonSerializable(typeof(CommandConfig))]
public record CommandConfig
{
    [JsonPropertyName("commands")]
    public IList<Command> Commands { get; init; }
}

[JsonSerializable(typeof(CommandConfig))]
public record CommandConfig
{
    [JsonPropertyName("commands")]
    public IList<Command> Commands { get; init; }
}

and this is the json file:

{
    "commands": [
        {
            "command": "log",
            "allowedFlags": ["pretty"],
            "arguments": [],
            "flags": {
                "Name": "pretty",
                "Value": "%h~%cn~%ch~%cI~%s"
            }
        }
    ]
}

{
    "commands": [
        {
            "command": "log",
            "allowedFlags": ["pretty"],
            "arguments": [],
            "flags": {
                "Name": "pretty",
                "Value": "%h~%cn~%ch~%cI~%s"
            }
        }
    ]
}

I get this error:

Unhandled exception. System.InvalidOperationException: Each parameter in the deserialization constructor on type 'BL.Core.Command' must bind to an object property or field on deserialization. Each parameter name must match with a property or field on the object. Fields are only considered when 'JsonSerializerOptions.IncludeFields' is enabled. The match can be case-insensitive.

Unhandled exception. System.InvalidOperationException: Each parameter in the deserialization constructor on type 'BL.Core.Command' must bind to an object property or field on deserialization. Each parameter name must match with a property or field on the object. Fields are only considered when 'JsonSerializerOptions.IncludeFields' is enabled. The match can be case-insensitive.

Serialization has the IncludeFields option set to true and all properties has JsonIgnore on them. Can someone please help?

47 replies

CC#

•Created by המשורר on 5/12/2024 in #help

C# array init

if I initialize an array of structs, which constructor does it use if any?

MyStruct[,] array = new MyStruct[2, 3];

struct MyStruct {
  public MyStruct() {
    // ctor
  }
  
  public MyStruct(int x) {
    // another ctor
  }
}

MyStruct[,] array = new MyStruct[2, 3];

struct MyStruct {
  public MyStruct() {
    // ctor
  }
  
  public MyStruct(int x) {
    // another ctor
  }
}

85 replies

CC#

•Created by המשורר on 4/21/2023 in #help

❔ SQL syntax error - INSERT INTO statement

query looks like this

string query = $"INSERT INTO users " +
                $"(fname, username, email, password, age, gender, state) " +
                $"VALUES ({fname}, {username}, {email}, {password}, {age}, {gender}, {state})";

string query = $"INSERT INTO users " +
                $"(fname, username, email, password, age, gender, state) " +
                $"VALUES ({fname}, {username}, {email}, {password}, {age}, {gender}, {state})";

get a syntax error please keep in mind this is something for school, stuff like SQL Injections and other new features are dismissible thanks in advance, benAmi

17 replies

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