WZExport/Models/DBConfig.cs

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Threading.Tasks;

namespace WZExport.Models
{
    public class DBConfig
    {
        [DisplayName("数据库")]
        public string DBName { get; set; }
        [DisplayName("连接字符串")]
        public string ConnectStr { get; set; }
        public bool Choose { get; set; }

        public static string GetChooseConnet()
        {
            string configStr = System.IO.File.ReadAllText("dBConfig.json");
            var dBConfigs = JsonConvert.DeserializeObject<List<DBConfig>>(configStr);
            return dBConfigs.FirstOrDefault(config => config.Choose == true).ConnectStr;
        }
    }
}