MemberManagement/RechargeForm.cs

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using MemberManagement.Common;
using MemberManagement.Context;
using MemberManagement.Entity;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace MemberManagement
{
    public partial class RechargeForm : Form
    {
        /// <summary>
        /// 会员id
        /// </summary>
        public string MemberId { get; set; }
        private Member _member { get; set; }

        private Recharge _recharge { get; set; }

        private string PrinterName = "";

        public RechargeForm()
        {
            InitializeComponent();
            this.GetPrinterName();
        }
        #region 私有函数

        private void GetComboNameList(string name = null)
        {
            using (var db = new MyContext())
            {
                var query = db.Member.Where(m => true)
                    .OrderByDescending(m => m.CreateTime)
                    .AsQueryable();
                if (!string.IsNullOrEmpty(name))
                {
                    query = query.Where(m => m.Name.Contains(name));
                }
                var result = query.Take(20).ToArray();
                this.comboName.DataSource = result;
            }
        }
        #endregion

        private void RechargeForm_Load(object sender, EventArgs e)
        {
            this.comboName.DisplayMember = "Name";
            if (!string.IsNullOrEmpty(MemberId))
            {
                var member = GetMemberDetail(MemberId);