c#操作excel方式四-Aspose控件
参考资料：http://www.cnblogs.com/wuhuacong/archive/2011/02/23/1962147.html
这位大大写得不错,还有复杂报表的生成,有兴趣的可以看看
http://www.cnblogs.com/kenblove/archive/2009/01/07/1371104.html
这里还有一篇Aspose基础知识的
方法1：读取excel内容到datable
DataTable _dt_Data;
初始化表的列
private void initDataTable()
{
_dt_Data = new DataTable();
_dt_Data.Columns.Add(new DataColumn("姓名"));
_dt_Data.Columns.Add(new DataColumn("地址"));
_dt_Data.Columns.Add(new DataColumn("年龄"));
_dt_Data.Columns.Add(new DataColumn("性别"));
_dt_Data.Columns.Add(new DataColumn("专业"));
_dt_Data.Columns.Add(new DataColumn("班级"));
_dt_Data.Columns.Add(new DataColumn("学校"));
}
遍历excel读取
Workbook wb = new Workbook();
wb.Open(fileName);
Worksheet ws = wb.Worksheets[0];
int iRow = 0;
DataRow dr = _dt_Data.NewRow();
foreach (Cell c in ws.Cells)
{
if (c.Column > _dt_Data.Columns.Count - 1)
{
continue;
}
if (iRow != c.Row)
{
_dt_Data.Rows.Add(dr);
dr = _dt_Data.NewRow();
}
dr[c.Column] = c.StringValue;
iRow = c.Row;
}
_dt_Data.Rows.Add(dr);
写入excel:
private void AddExcelSheet(Aspose.Cells.Workbook wk, DataTable dt)
{
if (dt == null) return;
for (int iColumnsCount = 0; iColumnsCount < dt.Columns.Count; iColumnsCount++)
{
wk.Worksheets[0].Cells[0, iColumnsCount].PutValue(dt.Columns[iColumnsCount].ColumnName);
}
for (int iRowsCount = 0; iRowsCount < dt.Rows.Count; iRowsCount++)
{
for (int iColumnsCount = 0; iColumnsCount < dt.Columns.Count; iColumnsCount++)
{
wk.Worksheets[0].Cells[iRowsCount + 1, iColumnsCount].PutValue(dt.Rows[iRowsCount][iColumnsCount].ToString());
}
}
}
Aspose.Cells.Workbook wk = new Aspose.Cells.Workbook();
AddExcelSheet(wk, _dt_Data);
wk.Save(strFileName);
方法2：我们直接用这位大大封装的类来实现写入excel和读取excel
1.下载引用:
aspose.cell.dll
http://download.csdn.net/detail/q383965374/5264908
2.添加引用:
3.创建类
using System.Data;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.IO;
using System.Drawing;
namespace excel4
{
public class AsposeExcelTools
{
public static bool DataTableToExcel(DataTable datatable, string filepath, out string error)
{
error = "";
if (datatable == null)
{
error = "DataTableToExcel:datatable 为空";
return false;
}
Aspose.Cells.Workbook workbook = new Aspose.Cells.Workbook();
Aspose.Cells.Worksheet sheet = workbook.Worksheets[0];
Aspose.Cells.Cells cells = sheet.Cells;
int nRow = 0;
foreach (DataRow row in datatable.Rows)
{
nRow++;
for (int i = 0; i < datatable.Columns.Count; i++)
{
if (row[i].GetType().ToString() == "System.Drawing.Bitmap")
{
//------插入图片数据-------
System.Drawing.Image image = (System.Drawing.Image)row[i];
MemoryStream mstream = new MemoryStream();
image.Save(mstream, System.Drawing.Imaging.ImageFormat.Jpeg);
sheet.Pictures.Add(nRow, i, mstream);
}
else
{
cells[nRow, i].PutValue(row[i]);
}
}
}
workbook.Save(filepath);
return true;
}
///
/// Excel文件转换为DataTable.
///
/// Excel文件的全路径
/// DataTable:返回值
/// 错误信息:返回错误信息，没有错误返回""
///
true:函数正确执行 false:函数执行错误
public static bool ExcelFileToDataTable(string filepath, out DataTable datatable, out string error)
{
error = "";
datatable = null;
try
{
if (File.Exists(filepath) == false)
{
error = "文件不存在";
datatable = null;
return false;
}
Aspose.Cells.Workbook workbook = new Aspose.Cells.Workbook();
workbook.Open(filepath);
Aspose.Cells.Worksheet worksheet = workbook.Worksheets[0];
datatable = worksheet.Cells.ExportDataTable(0, 0, worksheet.Cells.MaxRow + 1, worksheet.Cells.MaxColumn + 1);
//-------------图片处理-------------
Aspose.Cells.Pictures pictures = worksheet.Pictures;
if (pictures.Count > 0)
{
string error2 = "";
//if (InsertPicturesIntoDataTable(pictures, datatable, out datatable, out error2) == false)
//{
// error = error + error2;
//}
}
return true;
}
catch (System.Exception e)
{
error = e.Message;
return false;
}
}
}
}
添加一个opendiog用来选择写入的excel
写入按钮代码：
private void button1_Click(object sender, EventArgs e)
{
DataTable dt = new DataTable("test");
dt.Columns.Add("ID");
dt.Columns.Add("number");
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
for (int i = 0; i < 100; i++)
{
DataRow dr = dt.NewRow();
for (int j = 0; j < dt.Columns.Count; j++)
{
dr[j] = i.ToString();
}
dt.Rows.Add(dr);
}
string outError = "";
AsposeExcelTools.DataTableToExcel(dt, openFileDialog1.FileName, out outError);
if (!string.IsNullOrEmpty(outError))
{
MessageBox.Show(outError);
}
else
{
Process.Start(openFileDialog1.FileName);
}
}
}
结果：
添加一个gridview用来显示读出的数据
读取按钮代码:
private void button2_Click(object sender, EventArgs e)
{
DataTable dt = new DataTable("test");
string outError = "";
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
AsposeExcelTools.ExcelFileToDataTable(openFileDialog1.FileName,out dt,out outError);
this.dataGridView1.DataSource = dt;
this.dataGridView1.DataMember = dt.TableName;
}
}
结果：
警告1未能解析引用的程序集“Aspose.Cells”，因为它对不在当前目标框架“.NETFramework,Version=v4.0,Profile=Client”中的“System.Web,
Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a”具有依赖关系。请删除对不在目标框架中的程序集的引用，或考虑重新
确定项目的目标。HandHygiene.UI
解决方法：
出现这个问题是在一用log4net 动态库是出现的
原因在于程序的目标是.net 4 framework client profile
在项目的属性中 选择.net 4 framework 就OK了。