ReportUploadTool/ReportTool/Views/SignImageForm.cs

using DevExpress.XtraEditors.Controls;
using DevExpress.XtraEditors.Repository;
using DevExpress.XtraGrid.Columns;
using ReportTemplateTool.Models;
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.Windows.Forms;

namespace ReportTool.Views
{
    public partial class SignImageForm : BaseView
    {
        private List<DictUser> _users = new List<DictUser>();
        public SignImageForm()
        {
            InitializeComponent();

            // 创建图片列
            GridColumn imageColumn = SignImageGrid.Columns.AddField("SignImage");
            imageColumn.Caption = "签名图片";
            imageColumn.VisibleIndex = 0;

            // 设置图片编辑器
            RepositoryItemPictureEdit pictureEdit = new RepositoryItemPictureEdit();
            pictureEdit.SizeMode = PictureSizeMode.Squeeze; // 调整图片大小模式
            pictureEdit.NullText = "无图片"; // 空值显示文本
            SignImageControl.RepositoryItems.Add(pictureEdit);
            imageColumn.ColumnEdit = pictureEdit;

            Load += (s, e) =>
            {
                this.GetUserData();
            };

            UploadBtn.Click += UploadBtnClick;
            //DownloadBtn.Click += DownloadBtnClick;
            DelBtn.Click += DelBtnClick;
            //SaveBtn.Click += SaveBtnClick;
        }

        /// <summary>
        /// 查询用户数据
        /// </summary>
        private void GetUserData()
        {
            _users = _db.DictUser.ToList();
            Invoke(new Action(() => SignImageControl.DataSource = null));
            Invoke(new Action(() => {
                SignImageControl.DataSource = _users;
                SignImageControl.RefreshDataSource();
            }));
        }

        private void UploadBtnClick(object sender, EventArgs e)
        {
            using (OpenFileDialog openFileDialog = new OpenFileDialog())
            {
                openFileDialog.InitialDirectory = "D:\\ProgramCode\\company\\LisWeb\\liswebsvn\\LisWeb\\ReportFiles";
                openFileDialog.RestoreDirectory = true;
                openFileDialog.Multiselect = true;
                openFileDialog.Title = "选择多个文件";
                openFileDialog.Filter = "签名图片|*.jpg;*.jpeg;*.png";
                openFileDialog.FilterIndex = 2;
                //openFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

                if (openFileDialog.ShowDialog() == DialogResult.OK)
                {
                    List<DictUser> _updateReportFiles = new List<DictUser>();
                    foreach (string filePath in openFileDialog.FileNames)
                    {
                        FileInfo fileInfo = new FileInfo(filePath);
                        string _userName = fileInfo.Name.Substring(0, fileInfo.Name.IndexOf('.'));
                        DictUser _user = _users.FirstOrDefault(p => p.UserName == _userName);
                        if (_user != null)
                        {
                            _user.SignImage = File.ReadAllBytes(filePath);
                            _updateReportFiles.Add(_user);
                        }
                    }
                    DialogResult result = MessageBox.Show("所选中的签名图片将覆盖已保存的图片，是否确认上传？", "操作确认", MessageBoxButtons.YesNo, MessageBoxIcon.Question);

                    if (result == DialogResult.Yes)
                    {
                        _db.SaveChanges();
                        this.GetUserData();
                    }
                }
            }
        }

        /// <summary>
        /// 删除用户签名图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void DelBtnClick(object sender, EventArgs e)
        {
            if (SignImageGrid.SelectedRowsCount == 0) return;
            DialogResult result = MessageBox.Show($"是否确定删除所选中的{SignImageGrid.SelectedRowsCount}个用户签名图片？", "操作确认", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
            if (result == DialogResult.Yes)
            {
                foreach (DictUser user in _users.Where(p => SignImageGrid.GetSelectedRows().Contains(_users.IndexOf(p))))
                {
                    //_db.Database.ExecuteSqlCommand($"update Dict_User set SignImage = NULL where UserCode = {user.UserCode}");
                    user.SignImage = null;
                }
                _db.SaveChanges();
                this.GetUserData();
            }
        }
    }
}