DataExcel控件读取和保存excel xlsx 格式文件

news2024/12/24 20:20:37
需要引用NPOI库  https://github.com/dotnetcore/NPOI
调用Read 函数将excel读取到dataexcel控件
调用Save 函数将dataexcel控件文件保存为excel文件
using NPOI.HSSF.UserModel;
using NPOI.HSSF.Util;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Text;
using System.Windows.Forms;

namespace Feng.DataTool
{
    public class ExcelTools
    {
        public static void Save(Feng.Excel.DataExcel grid, string file)
        {
            HSSFWorkbook hssfworkbook = new HSSFWorkbook();
            ISheet sheet1 = hssfworkbook.CreateSheet("Sheet1");
            List<CellStyleTemp> cellstyletemplist = new List<CellStyleTemp>();
            foreach (Feng.Excel.Interfaces.IRow gridrow in grid.Rows)
            {
                if (gridrow.Index < 1)
                    continue;
                IRow row = sheet1.CreateRow(gridrow.Index-1);
                row.Height = (short)(gridrow.Height * 20);
                foreach (Feng.Excel.Interfaces.IColumn column in grid.Columns)
                {
                    if (column.Index < 1)
                        continue;
                    
                    Feng.Excel.Interfaces.ICell gridcell = gridrow[column];
                    if (gridcell == null)
                        continue;
                    ushort width = (ushort)((column.Width) / 7 * 256);
                    sheet1.SetColumnWidth(column.Index-1, width);
                    ICell cell = row.CreateCell(column.Index-1);
                    string text = gridcell.Text;
                    cell.SetCellValue(text);

                    bool bottomlinestylevisible = false;
                    bool leftlinestylevisible = false;
                    bool rightlinestylevisible = false;
                    bool toplinestylevisible = false;
                    bool isstrikeout = false;
                    bool isbold = false;
                    double fontheightinpoints = 29;
                    string fontname = string.Empty;
                    if (gridcell.BorderStyle != null)
                    {
                        if (gridcell.BorderStyle.BottomLineStyle != null)
                        {
                            if (gridcell.BorderStyle.BottomLineStyle.Visible)
                            {
                                bottomlinestylevisible = true;
                            }
                        }
                        if (gridcell.BorderStyle.LeftLineStyle != null)
                        {
                            if (gridcell.BorderStyle.LeftLineStyle.Visible)
                            {
                                leftlinestylevisible = true;
                            }
                        }
                        if (gridcell.BorderStyle.RightLineStyle != null)
                        {
                            if (gridcell.BorderStyle.RightLineStyle.Visible)
                            {
                                rightlinestylevisible = true;
                            }
                        }
                        if (gridcell.BorderStyle.TopLineStyle != null)
                        {
                            if (gridcell.BorderStyle.TopLineStyle.Visible)
                            {
                                toplinestylevisible = true;
                            }
                        }
                    }

                    isstrikeout = gridcell.Font.Strikeout; 
                    isbold = gridcell.Font.Bold;
                    fontheightinpoints = gridcell.Font.Size;
                    fontname = gridcell.Font.Name;
                    int alignment = GetHAlignment(gridcell.HorizontalAlignment);
                    int verticalalignment = GetVAlignment(gridcell.VerticalAlignment);
                    ICellStyle style = GetCellStyle(hssfworkbook, cellstyletemplist
            , bottomlinestylevisible, leftlinestylevisible
            , rightlinestylevisible, toplinestylevisible
            , isstrikeout, isbold
            , fontheightinpoints, fontname
            , alignment, verticalalignment);
                    cell.CellStyle = style;
                }
            }


            foreach (Feng.Excel.Interfaces.IMergeCell item in grid.MergeCells)
            {
                sheet1.AddMergedRegion(new CellRangeAddress(item.MinCell.Row.Index-1,item.MaxRowIndex - 1, item.MinCell.Column.Index - 1, item.MaxColumnIndex - 1));
                //sheet1.AddMergedRegion(new CellRangeAddress(2, 7, 2, 7));
            }

            FileStream stream = new FileStream(file, FileMode.Create);
            hssfworkbook.Write(stream);
            stream.Close();
        }

        public static int GetHAlignment(StringAlignment alignment)
        {
            switch (alignment)
            {
                case StringAlignment.Near:
                    return 1; 
                case StringAlignment.Center:
                    return 2;
                case StringAlignment.Far:
                    return 3;
                default:
                    break;
            }
            return 0;
        }
        public static int GetVAlignment(StringAlignment alignment)
        {
            switch (alignment)
            {
                case StringAlignment.Near:
                    return 0;
                case StringAlignment.Center:
                    return 1;
                case StringAlignment.Far:
                    return 2;
                default:
                    break;
            }
            return 0;
        }
        public class CellStyleTemp
        {
            public CellStyleTemp()
            {
                
            }
            public bool BottomLineStyleVisible { get; set; }
            public bool LeftLineStyleVisible { get; set; }
            public bool RightLineStyleVisible { get; set; }
            public bool TopLineStyleVisible { get; set; }
            public bool IsStrikeout { get; set; }
            public bool IsBold { get; set; }
            public double FontHeightInPoints { get; set; }
            public string FontName { get; set; }
            public int Alignment { get; set; }
            public int VerticalAlignment { get; set; }

            public ICellStyle style { get; set; }
        }

        public static ICellStyle GetCellStyle(HSSFWorkbook hssfworkbook, List<CellStyleTemp> styles
            , bool bottomlinestylevisible, bool leftlinestylevisible
            , bool rightlinestylevisible, bool toplinestylevisible
            , bool isstrikeout, bool isbold
            , double fontheightinpoints, string fontname
            , int alignment
            , int verticalalignment)
        { 
            foreach (CellStyleTemp item in styles)
            { 
                if (item.BottomLineStyleVisible != bottomlinestylevisible)
                {
                    continue;
                }
                double upfontheightinpoints = fontheightinpoints + 0.1;
                double downfontheightinpoints = fontheightinpoints - 0.1;
                if (!((item.FontHeightInPoints > downfontheightinpoints) && (item.FontHeightInPoints < upfontheightinpoints)))
                {
                    continue;
                }
                if (item.FontName != fontname)
                {
                    continue;
                }
                if (item.IsBold != isbold)
                {
                    continue;
                }
                if (item.IsStrikeout != isstrikeout)
                {
                    continue;
                }
                if (item.LeftLineStyleVisible != leftlinestylevisible)
                {
                    continue;
                }
                if (item.RightLineStyleVisible != rightlinestylevisible)
                {
                    continue;
                }
                if (item.TopLineStyleVisible != toplinestylevisible)
                {
                    continue;
                }
                if (item.Alignment != alignment)
                {
                    continue;
                }
                if (item.VerticalAlignment != verticalalignment)
                {
                    continue;
                }
                return item.style;
            }
            CellStyleTemp cellStyleTemp = new CellStyleTemp();
            cellStyleTemp.BottomLineStyleVisible = bottomlinestylevisible;
            cellStyleTemp.FontHeightInPoints = fontheightinpoints;
            cellStyleTemp.FontName = fontname;
            cellStyleTemp.IsBold = isbold;
            cellStyleTemp.IsStrikeout = isstrikeout;
            cellStyleTemp.LeftLineStyleVisible = leftlinestylevisible;
            cellStyleTemp.RightLineStyleVisible = rightlinestylevisible;
            cellStyleTemp.TopLineStyleVisible = toplinestylevisible;
            cellStyleTemp.Alignment = alignment;
            cellStyleTemp.VerticalAlignment = verticalalignment;
            ICellStyle style = CreateCellStyle(hssfworkbook
            , bottomlinestylevisible, leftlinestylevisible
            , rightlinestylevisible, toplinestylevisible
            , isstrikeout, isbold
            , fontheightinpoints, fontname, alignment
            , verticalalignment);
            cellStyleTemp.style = style;
            styles.Add(cellStyleTemp);
            return cellStyleTemp.style;
        }

        public static ICellStyle CreateCellStyle(HSSFWorkbook hssfworkbook
            , bool BottomLineStyleVisible, bool LeftLineStyleVisible
            , bool RightLineStyleVisible, bool TopLineStyleVisible
            , bool IsStrikeout, bool IsBold
            , double FontHeightInPoints, string FontName
            , int alignment
            , int verticalalignment)
        {
            ICellStyle style = hssfworkbook.CreateCellStyle();
            if (BottomLineStyleVisible)
            {
                style.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
            }
            if (LeftLineStyleVisible)
            {
                style.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
            }
            if (RightLineStyleVisible)
            {
                style.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
            }
            if (TopLineStyleVisible)
            {
                style.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
            }
             
            style.Alignment = (NPOI.SS.UserModel.HorizontalAlignment)alignment;
            style.VerticalAlignment = (NPOI.SS.UserModel.VerticalAlignment)verticalalignment;
            IFont font2 = hssfworkbook.CreateFont();
            font2.Color = HSSFColor.Black.Index;
            if (IsStrikeout)
            {
                font2.IsStrikeout = true;
            }
            if (IsBold)
            {
                font2.IsBold = true;
            }
            font2.FontHeightInPoints = FontHeightInPoints;
            font2.FontName = FontName;
            style.SetFont(font2);
            return style;
        }
        public static void Read(Feng.Excel.DataExcel grid, string file)
        {
            FileStream stream = new FileStream(file, FileMode.Open);
            HSSFWorkbook hssfworkbook = new HSSFWorkbook(stream);
            stream.Close();
            ISheet sheet = hssfworkbook.GetSheetAt(0);
            int rowcount = sheet.LastRowNum;
            bool hassetcolumnwidth = false;
            for (int rowindex = 0; rowindex < rowcount; rowindex++)
            {
                IRow row = sheet.GetRow(rowindex);
                if (row == null)
                    continue;
                Feng.Excel.Interfaces.IRow gridrow = grid.GetRow(rowindex + 1);
                gridrow.Height = row.Height / 20;
                short columncount = row.LastCellNum;
                for (short columnindex = 0; columnindex < columncount; columnindex++)
                {
                    Feng.Excel.Interfaces.IColumn gridcolumn = grid.GetColumn(columnindex + 1);
                    int width = sheet.GetColumnWidth(columnindex); 
                    gridcolumn.Width = (width / 256) * 7;
                    ICell cell = row.GetCell(columnindex);
                    if (cell == null)
                        continue;
                    Feng.Excel.Interfaces.ICell gridcell = grid.GetCell(gridrow.Index, gridcolumn.Index);
                    gridcell.BorderStyle = new Excel.Styles.CellBorderStyle();
                    try
                    {
                        if (cell.CellType == CellType.String)
                        {
                            gridcell.Value = cell.StringCellValue;
                        }
                        if (cell.CellType == CellType.Numeric)
                        {
                            gridcell.Value = cell.NumericCellValue;
                        }
                        if (cell.CellType == CellType.Boolean)
                        {
                            gridcell.Value = cell.BooleanCellValue;
                        }
                        if (cell.CellType == CellType.Unknown)
                        {
                            gridcell.Value = cell.StringCellValue;
                        }

                        if (cell.CellStyle.BorderBottom == NPOI.SS.UserModel.BorderStyle.Thin)
                        {
                            gridcell.BorderStyle.BottomLineStyle = new Excel.Styles.LineStyle();
                            gridcell.BorderStyle.BottomLineStyle.Visible = true;
                        }
                        if (cell.CellStyle.BorderLeft == NPOI.SS.UserModel.BorderStyle.Thin)
                        {
                            gridcell.BorderStyle.LeftLineStyle = new Excel.Styles.LineStyle();
                            gridcell.BorderStyle.LeftLineStyle.Visible = true;

                        }
                        if (cell.CellStyle.BorderRight == NPOI.SS.UserModel.BorderStyle.Thin)
                        {
                            gridcell.BorderStyle.RightLineStyle = new Excel.Styles.LineStyle();
                            gridcell.BorderStyle.RightLineStyle.Visible = true;
                        }
                        if (cell.CellStyle.BorderTop == NPOI.SS.UserModel.BorderStyle.Thin)
                        {
                            gridcell.BorderStyle.TopLineStyle = new Excel.Styles.LineStyle();
                            gridcell.BorderStyle.TopLineStyle.Visible = true;
                        }
                    }
                    catch (Exception ex)
                    {
                        Feng.Utils.TraceHelper.WriteTrace("SysTools", "ExcelTools", "Read", ex);
                    }
                    try
                    {
                        IFont font2 = cell.CellStyle.GetFont(hssfworkbook);
                        System.Drawing.FontStyle fontstyle = System.Drawing.FontStyle.Regular;
                        if (font2.IsStrikeout)
                        {
                            fontstyle = fontstyle | System.Drawing.FontStyle.Strikeout;
                        }
                        if (font2.IsBold)
                        {
                            fontstyle = fontstyle | System.Drawing.FontStyle.Bold;
                        }
                        font2.FontHeightInPoints = gridcell.Font.Size;
                        font2.FontName = gridcell.Font.Name;
                        gridcell.Font = new System.Drawing.Font(font2.FontName, (float)font2.FontHeightInPoints, fontstyle);
                    }
                    catch (Exception ex)
                    {
                        Feng.Utils.TraceHelper.WriteTrace("SysTools", "ExcelTools", "Read", ex);
                    }
                    try
                    {
                        if (cell.CellStyle.Alignment == NPOI.SS.UserModel.HorizontalAlignment.Center)
                        {
                            gridcell.HorizontalAlignment = StringAlignment.Center;
                        }
                        if (cell.CellStyle.Alignment == NPOI.SS.UserModel.HorizontalAlignment.Left)
                        {
                            gridcell.HorizontalAlignment = StringAlignment.Near;
                        }
                        if (cell.CellStyle.Alignment == NPOI.SS.UserModel.HorizontalAlignment.Right)
                        {
                            gridcell.HorizontalAlignment = StringAlignment.Far;
                        }
                    }
                    catch (Exception ex)
                    { 
                        Feng.Utils.TraceHelper.WriteTrace("SysTools", "ExcelTools", "Read", ex);
                    }
                    try
                    {
                        if (cell.CellStyle.VerticalAlignment == NPOI.SS.UserModel.VerticalAlignment.Center)
                        {
                            gridcell.VerticalAlignment = StringAlignment.Center;
                        }
                        if (cell.CellStyle.VerticalAlignment == NPOI.SS.UserModel.VerticalAlignment.Top)
                        {
                            gridcell.VerticalAlignment = StringAlignment.Near;
                        }
                        if (cell.CellStyle.VerticalAlignment == NPOI.SS.UserModel.VerticalAlignment.Bottom)
                        {
                            gridcell.VerticalAlignment = StringAlignment.Far;
                        }
                    }
                    catch (Exception ex)
                    {
                        Feng.Utils.TraceHelper.WriteTrace("SysTools", "ExcelTools", "Read", ex);
                    }
                }
            }

            List<CellRangeAddress> listmer = sheet.MergedRegions;
            if (listmer != null)
            {
                foreach (CellRangeAddress item in listmer)
                {
                    grid.MergeCell(item.FirstRow + 1, item.FirstColumn + 1, item.LastRow + 1, item.LastColumn + 1);
                }
            }
        }
    }
}

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