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 cellstyletemplist = new List();
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 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 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);
}
}
}
}
}
