Language-Ext Unions - 目标运行时不支持默认接口实现

Question

我正在尝试在 Language-Ext 中使用 Union 类型，但出现错误：方法名称的“目标运行时不支持默认接口实现”和“类型或名称空间名称 'InconsistentFirstName'找不到

我的代码如下所示：

[Union]
public interface Inconsistency
{
    public Inconsistency InconsistentFirstName(string localValue, string contactCentreValue);
    public Inconsistency InconsistentSurname(string localValue, string contactCentreValue);

    public string GetFieldName(Inconsistency inconsistency)
        => inconsistency switch
        {
            InconsistentFirstName n => "Name",
            InconsistenctSurname s => "Surname",
            _ => ""
        };
}

Answer 1

GetFieldName 需要添加到单独的 class 文件中。有一个部分 class 是自动生成的代码，称为 InconsistencyCon，所以我试图实现的可以使用以下代码完成：


[Union]
public abstract partial class Inconsistency
{
    public abstract Inconsistency InconsistentFirstName(string localValue, string remoteValue); 
    public abstract Inconsistency InconsistentSurname(string localValue, string remoteValue);
}

public static partial class InconsistencyCon
{
     public static string FieldName(this Inconsistency inconsistency) =>
         inconsistency switch
         {
             InconsistentFirstName n => "Name",
             InconsistentSurname s   => "Surname",
             _  => ""
         };

     public static string Test(Inconsistency inconsistency)
        {
            if (inconsistency is InconsistentFirstName n)
            {
                var a = n.LocalValue;
                var b = n.FieldName;
                // etc
            }
        }
}

Language-Ext Unions - 目标运行时不支持默认接口实现

Language-Ext Unions - Target runtime doesn't support default interface implementation

language-ext