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;
}
}
}
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