winform通用的用户管理界面SqlSugar对数据库的增删改查

以下是学习笔记：

1，UI界面

2，用户对象类（Models中）：

    /// <summary>
    /// 用户实体类，要与数据库的表名一致
    /// </summary>
    public class SysAdmin
    {
        public int LoginID { get; set; }
        public string LoginName { get; set; }
        public string LoginPwd { get; set; }
        public int Role { get; set; }
    }

3，用户对象的数据服务

using AutomaticStoreMotionModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AutomaticStoreMotionDal
{
    /// <summary>
    /// 用户管理Service
    /// </summary>
    public class SysAdminService
    {
        /// <summary>
        /// 返回所有的用户集合（admin除外）
        /// </summary>
        /// <returns>用户对象集合</returns>
        public static List<SysAdmin> GetAllAdminDB()
        {
            return SqlSugarHelper.SqlSugarClient.Queryable<SysAdmin>().Where(c => c.LoginName.ToLower() != "admin").ToList();
        }

        /// <summary>
        /// 验证登录用户结果（验证用户名和密码和数据库的是否一致）
        /// </summary>
        /// <param name="sysAdmin">用户对象</param>
        /// <returns>用户对象</returns>
        public static SysAdmin AdminLogin(SysAdmin sysAdmin)
        {
            var list= SqlSugarHelper.SqlSugarClient.Queryable<SysAdmin>().Where(c => c.LoginName.ToLower() ==sysAdmin.LoginName&&c.LoginPwd==sysAdmin.LoginPwd).ToList();
            return list.Count == 0 ? null : list[0];
        }

        /// <summary>
        /// 增：添加用户
        /// </summary>
        /// <param name="admin">用户对象</param>
        /// <returns></returns>
        public static bool AddAdminDB(SysAdmin admin)
        {
            return SqlSugarHelper.SqlSugarClient.Insertable(admin).ExecuteCommand() == 1;
        }

        /// <summary>
        /// 根据用户名判断用户是否存在
        /// </summary>
        /// <param name="loginName">用户名</param>
        /// <returns></returns>
        public static bool CheckLoginNameExit(string loginName)
        {
            return SqlSugarHelper.SqlSugarClient.Queryable<SysAdmin>().Where(c=>c.LoginName==loginName).Count()>0;
        }

        /// <summary>
        /// 改：根据用户名更新用户
        /// </summary>
        /// <param name="admin">用户对象</param>
        /// <returns></returns>
        public static bool UpdateAdminDB(SysAdmin admin)
        {
            return SqlSugarHelper.SqlSugarClient.Updateable(admin).WhereColumns(c => c.LoginName).ExecuteCommand()==1;
        }

        /// <summary>
        /// 删：更加用户名删除用户
        /// </summary>
        /// <param name="loginName">用户名</param>
        /// <returns></returns>
        public static bool DeleteAdminDB(string loginName)
        {
            return SqlSugarHelper.SqlSugarClient.Deleteable<SysAdmin>().Where(c => c.LoginName==loginName).ExecuteCommand() == 1;
        }

        /// <summary>
        /// 根据用户名称返回用户对象
        /// </summary>
        /// <param name="loginName">用户名</param>
        /// <returns>用户对象</returns>
        public static SysAdmin GetSysAdminByLoginName(string loginName)
        {
            var query= SqlSugarHelper.SqlSugarClient.Queryable<SysAdmin>().Where(c => c.LoginName == loginName).ToList();
            if (query.Count > 0)
            {
                return query[0];
            }
            else
            {
                return null;
            }
        }

    }  
}

　

4，用户界面的增删改查

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using AutomaticStoreMotionDal;
using AutomaticStoreMotionModels;

namespace AutomaticStoreMotionPro
{
    /// <summary>
    /// 枚举权限
    /// </summary>
    public enum AdminRole
    {
        作业员,
        工程师,
        主管
    }

    public partial class FrmUserManager : Form
    {
        public FrmUserManager()
        {
            InitializeComponent();

            this.dgv_data.AutoGenerateColumns = false;
            this.dgv_data.ReadOnly = true;//设置只读模式

            UpdateAdmin();
        }

        //更新
        private void UpdateAdmin()
        {
            this.dgv_data.DataSource = null;
            this.dgv_data.DataSource = SysAdminService.GetAllAdminDB();
        }

        //加行号
        private void dgv_data_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
        {
            AutomaticStoreMotionDal.DataGridViewHelper.DgvRowPostPaint(this.dgv_data, e);
        }

        //格式转换
        private void dgv_data_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
        {
            if (e.RowIndex >= 0)
            {
                if (e.ColumnIndex == 1 && e.Value != null)//密码
                {
                    //MD5解密密码
                }
                if (e.ColumnIndex == 2 && e.Value != null)//权限
                {
                    //权限存在数据库是数字，把值转为枚举的字符串
                    e.Value = ((AdminRole) Convert.ToInt32(e.Value)).ToString();
                }
            }
        }

        //双击事件：把当前对象填充到输入框，方便修改
        private void dgv_data_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex >= 0)
            {
                string loginName = this.dgv_data.CurrentRow.Cells[0].Value.ToString();
                SysAdmin admin = SysAdminService.GetSysAdminByLoginName(loginName);

                if (admin != null)
                {
                    this.txt_loginName.Text = admin.LoginName;
                    this.txt_loginPwd.Text = admin.LoginPwd;
                    this.rdb_operation.Checked = admin.Role == 0;
                    this.rdb_engineer.Checked = admin.Role == 1;
                    this.rdb_manager.Checked = admin.Role == 2;
                }
            }
        }

        //增加用户
        private void btn_add_Click(object sender, EventArgs e)
        {
            if (this.txt_loginName.Text.Length == 0)
            {
                MessageBox.Show("用户名称不得为空", "添加用户");
                return;               
            }
            if (this.txt_loginPwd.Text.Length == 0)
            {
                MessageBox.Show("用户密码不得为空", "添加用户");
                return;
            }

            if (SysAdminService.CheckLoginNameExit(this.txt_loginName.Text))
            {
                MessageBox.Show("该用户名称已经存在，请修改后再添加", "添加用户");
                return;
            }
            SysAdmin admin=new SysAdmin()
            {
                LoginName = this.txt_loginName.Text.Trim(),
                LoginPwd = this.txt_loginPwd.Text.Trim(),
                Role = this.rdb_operation.Checked?0:this.rdb_engineer.Checked?1:2
            };
            if (SysAdminService.AddAdminDB(admin))
            {
                MessageBox.Show("新用户:" + $"“{admin.LoginName}”" + "添加成功", "添加用户");
                UpdateAdmin();
            }
            else
            {
                MessageBox.Show("新用户:" + $"“{admin.LoginName}”" + "添加失败", "添加用户");
            }
        }

        //修改用户
        private void btn_modify_Click(object sender, EventArgs e)
        {
            if (this.txt_loginName.Text.Length == 0)
            {
                MessageBox.Show("用户名称不得为空", "修改用户");
                return;
            }
            if (this.txt_loginPwd.Text.Length == 0)
            {
                MessageBox.Show("用户密码不得为空", "修改用户");
                return;
            }

            //检测用户是否存在
            if (!SysAdminService.CheckLoginNameExit(this.txt_loginName.Text))
            {
                MessageBox.Show("该用户名称不存在，请添加后再修改", "修改用户");
                return;
            }
            SysAdmin admin = new SysAdmin()
            {
                LoginName = this.txt_loginName.Text.Trim(),
                LoginPwd = this.txt_loginPwd.Text.Trim(),
                Role = this.rdb_operation.Checked ? 0 : this.rdb_engineer.Checked ? 1 : 2
            };
            if (SysAdminService.UpdateAdminDB(admin))
            {
                MessageBox.Show("用户:" + $"“{admin.LoginName}”" + "信息修改成功", "修改用户");
                UpdateAdmin();
            }
            else
            {
                MessageBox.Show("用户:" + $"“{admin.LoginName}”" + "信息修改失败", "修改用户");
            }
        }

        //删除用户
        private void btn_delete_Click(object sender, EventArgs e)
        {
            if (this.dgv_data.SelectedRows.Count > 0)
            {
                string loginName = this.dgv_data.SelectedRows[0].Cells[0].Value.ToString();
                if (SysAdminService.DeleteAdminDB(loginName))
                {
                    MessageBox.Show("用户:"+$"“{loginName}”"+"删除成功", "删除用户");
                    UpdateAdmin();
                }
                else
                {
                    MessageBox.Show("用户:" + $"“{loginName}”" + "删除失败", "删除用户");
                }
            }
            else
            {
                MessageBox.Show("请选择要删除的用户", "删除用户");
            }
        }

        //清空文本框
        private void btn_clear_Click(object sender, EventArgs e)
        {
            this.txt_loginName.Clear();
            this.txt_loginPwd.Clear();
            this.rdb_operation.Checked = true;
        }
    }
}