29WxOrder/AllBase/OutExcel.cs

using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Text;
using System.Windows.Forms;

namespace AllBase
{
    public static class OutExcel
    {
        /// <summary>
        /// 保存数据
        /// </summary>
        /// <param name="patch"></param>
        /// <param name="dt"></param>
        /// <returns></returns>
        public static bool SaveFile(string patch, DataGridView dt)
        {

            string temp = "";
            for (int i = 0; i < dt.ColumnCount; i++)
            {
                if (dt.Columns[i].HeaderText != "删除")
                    temp += dt.Columns[i].HeaderText + "\t";
            }
            if (!string.IsNullOrEmpty(temp))
                temp += "\r\n";
            try
            {
                if (File.Exists(patch))
                    File.Delete(patch);
                File.WriteAllText(patch, temp, Encoding.Unicode);
                temp = "";
            }
            catch
            {
                return false;
            }
            for (int i = 0; i < dt.RowCount; i++)
            {
                if (dt.Rows[i].Selected != true)
                {
                    break;
                }
                for (int j = 0; j < dt.ColumnCount; j++)
                {
                    if (dt.Columns[j].HeaderText != "删除" && dt.Rows[i].Cells[j] == null)
                    {
                        temp += dt.Rows[i].Cells[j].Value.ToString() + "\t";
                    }
                }
                temp += "\r\n";
                if (temp.Length > 2000)
                {
                    try
                    {
                        File.AppendAllText(patch, temp, Encoding.Unicode);
                        temp = "";
                    }
                    catch
                    {
                        //return false;
                    }
                }
            }
            if (string.IsNullOrEmpty(temp))
                return true;
            try
            {
                File.AppendAllText(patch, temp, Encoding.Unicode);
            }
            catch
            {
                return false;
            }
            return true;
        }


        public static void ExportToExcel(DataTable dt, string fileName = "")
        {
            ExportToExcelData(dt, fileName);
        }

        public static DataTable ToDataTable(this DataGridView myDGV)
        {
            DataTable dt = new DataTable();
            for (int i = 0; i < myDGV.ColumnCount; i++)
            {
                if (myDGV.Columns[i].HeaderText != "图片" && myDGV.Columns[i].HeaderText != "开始拍单" /*&& myDGV.Columns[i].HeaderText != "后台备注"*/)
                {
                    dt.Columns.Add(myDGV.Columns[i].HeaderText);
                }
            }
            //写入数值
            for (int r = 0; r < myDGV.Rows.Count; r++)
            {
                if (myDGV.SelectedRows.Count > 1)
                {
                    if (myDGV.Rows[r].Selected == false)
                    {
                        continue;
                    }
                }
                List<object> values = new List<object>();
                for (int i = 0; i < myDGV.ColumnCount; i++)
                {
                    if (myDGV.Columns[i].HeaderText != "图片" && myDGV.Columns[i].HeaderText != "开始拍单" /*&& myDGV.Columns[i].HeaderText != "后台备注"*/)
                    {
                        values.Add(myDGV.Rows[r].Cells[i].Value);
                    }
                }
                dt.Rows.Add(values.ToArray());
            }
            return dt;
        }



        #region 导出
        /// <summary>
        /// 数据导出
        /// </summary>
        /// <param name="data"></param>
        /// <param name="sheetName"></param>
        public static void ExportToExcelData(this DataTable data, string fileName = "")
        {
            ExportToExcel(data, "Sheet1", fileName);
        }
        /// <summary>
        /// 数据导出
        /// </summary>
        /// <param name="data"></param>
        /// <param name="sheetName"></param>
        public static void ExportToExcel(this DataTable data, string sheetName, string fileName = "")
        {
            bool isFactoryOrder = !string.IsNullOrEmpty(fileName);

            SaveFileDialog fileDialog = new SaveFileDialog();
            //fileDialog.Filter = "Excel(97-2003)|*.xls|Excel(2007-2013)|*.xlsx";
            fileDialog.Filter = "Excel|*.xls|Excel|*.xlsx";
            fileName += DateTime.Now.ToString("yyyyMMddHHmmss");
            fileDialog.FileName = fileName;

            if (fileDialog.ShowDialog() == System.Windows.Forms.DialogResult.Cancel)
            {
                return;
            }
            IWorkbook workbook = new XSSFWorkbook();
            ISheet sheet = workbook.CreateSheet(sheetName);
            IRow rowHead = sheet.CreateRow(0);

            //填写表头
            for (int i = 0; i < data.Columns.Count; i++)
            {
                rowHead.CreateCell(i, CellType.String).SetCellValue(data.Columns[i].ColumnName.ToString());
            }
            //填写内容
            for (int i = 0; i < data.Rows.Count; i++)
            {
                IRow row = sheet.CreateRow(i + 1);
                for (int j = 0; j < data.Columns.Count; j++)
                {
                    string cValue = data.Rows[i][j].ToString();
                    if ((data.Columns[j].ColumnName.ToString() == "姓名" ||
                        data.Columns[j].ColumnName.ToString() == "电话" ||
                        data.Columns[j].ColumnName.ToString() == "地址") &&
                        !isFactoryOrder)
                    {
                        //cValue = "******";
                    }
                    row.CreateCell(j, CellType.String).SetCellValue(cValue);
                }
            }

            for (int i = 0; i < data.Columns.Count; i++)
            {
                sheet.AutoSizeColumn(i);
            }

            using (FileStream stream = File.OpenWrite(fileDialog.FileName))
            {
                workbook.Write(stream);
                stream.Close();
            }
            //MessageBox.Show("导出数据成功!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            GC.Collect();
        }
        #endregion
    }
}