新版本的xlsx是使用新的存储格式，貌似是处理过的XML。
传统的excel处理方法，我真的感觉像屎。用Oldeb不方便，用com组件要实际调用excel打开关闭，很容易出现死。
对于OpenXML我网上搜了一下，很多人没有介绍。所以我就这里推荐下，相信会成为信息系统开发的必备。
先写出个例子，会发现如此的简介：
using System;
using System.Collections.Generic;
using System.Text;
using XFormular.config;
using System.IO;
using com.xtar.amfx;
using System.Runtime.Serialization.Formatters.Binary;
using System.Data; namespace XFormular.test
{
class Class1
{
public void test()
{
DataTable table = new DataTable("");
table.Columns.Add("");
for (int i = ; i < ; i++)
{
DataRow row = table.NewRow();
row[] = i;
table.Rows.Add(row);
} List<DataTable> lsit = new List<DataTable>();
lsit.Add(table); OpenXmlSDKExporter.Export(AppDomain.CurrentDomain.BaseDirectory + "\\excel.xlsx", lsit);
}
}
}
写出代码：
using System;
using System.IO;
using System.Windows.Forms;
using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Spreadsheet;
using DocumentFormat.OpenXml.Extensions;
using System.Collections.Generic;
using System.Data;
using System.Text.RegularExpressions; namespace XFormular
{
//http://simpleooxml.codeplex.com/
//http://www.pin5i.com/showtopic-21817.html
//http://blog.csdn.net/lbj147123/article/details/6603942
class OpenXmlSDKExporter
{
private static string[] Level = {"A", "B", "C", "D", "E", "F", "G",
"H", "I", "G", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T",
"U", "V", "W", "X", "Y", "Z" }; public static List<DataTable> Import(string path)
{
List<DataTable> tables = new List<DataTable>(); if (path.EndsWith(ExcelHelper.POSTFIX_SVN))
return tables; using (MemoryStream stream = SpreadsheetReader.StreamFromFile(path))
{
using (SpreadsheetDocument doc = SpreadsheetDocument.Open(stream, true))
{
foreach (Sheet sheet in doc.WorkbookPart.Workbook.Descendants<Sheet>())
{
DataTable table = new DataTable(sheet.Name.Value); WorksheetPart worksheet = (WorksheetPart)doc.WorkbookPart.GetPartById(sheet.Id); List<string> columnsNames = new List<string>(); foreach (Row row in worksheet.Worksheet.Descendants<Row>())
{
foreach (Cell cell in row)
{
string columnName = Regex.Match(cell.CellReference.Value, "[a-zA-Z]+").Value; if (!columnsNames.Contains(columnName))
{
columnsNames.Add(columnName);
} }
} columnsNames.Sort(CompareColumn); foreach (string columnName in columnsNames)
{
table.Columns.Add(columnName);
} foreach (Row row in worksheet.Worksheet.Descendants<Row>())
{
DataRow tableRow = table.NewRow();
table.Rows.Add(tableRow); foreach (Cell cell in row)
{
string columnName = Regex.Match(cell.CellReference.Value, "[a-zA-Z]+").Value;
tableRow[columnName] = GetValue(cell, doc.WorkbookPart.SharedStringTablePart);
}
} if (table.Rows.Count <= )
continue;
if (table.Columns.Count <= )
continue; tables.Add(table);
}
}
} return tables;
} public static String GetValue(Cell cell, SharedStringTablePart stringTablePart)
{ if (cell.ChildElements.Count == ) return null; //get cell value String value = cell.CellValue.InnerText; //Look up real value from shared string table if ((cell.DataType != null) && (cell.DataType == CellValues.SharedString)) value = stringTablePart.SharedStringTable .ChildElements[Int32.Parse(value)] .InnerText; return value; } public static void Export(string path, List<DataTable> tables)
{
using (MemoryStream stream = SpreadsheetReader.Create())
{
using (SpreadsheetDocument doc = SpreadsheetDocument.Open(stream, true))
{
SpreadsheetWriter.RemoveWorksheet(doc, "Sheet1");
SpreadsheetWriter.RemoveWorksheet(doc, "Sheet2");
SpreadsheetWriter.RemoveWorksheet(doc, "Sheet3"); foreach (DataTable table in tables)
{
WorksheetPart sheet = SpreadsheetWriter.InsertWorksheet(doc, table.TableName);
WorksheetWriter writer = new WorksheetWriter(doc, sheet); SpreadsheetStyle style = SpreadsheetStyle.GetDefault(doc); foreach (DataRow row in table.Rows)
{
for (int i = ; i < table.Columns.Count; i++)
{
string columnName = SpreadsheetReader.GetColumnName("A", i);
string location = columnName + (table.Rows.IndexOf(row) + );
writer.PasteText(location, row[i].ToString(), style);
}
} writer.Save();
}
SpreadsheetWriter.StreamToFile(path, stream);//保存到文件中
}
}
} private static int CompareColumn(string x, string y)
{
int xIndex = Letter_to_num(x);
int yIndex = Letter_to_num(y);
return xIndex.CompareTo(yIndex);
} /// <summary>
/// 数字26进制，转换成字母，用递归算法
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
private static string Num_to_letter(int value)
{
//此处判断输入的是否是正确的数字，略（正在表达式判断）
int remainder = value % ;
//remainder = (remainder == 0) ? 26 : remainder;
int front = (value - remainder) / ;
if (front < )
{
return Level[front - ] + Level[remainder];
}
else
{
return Num_to_letter(front) + Level[remainder];
}
//return "";
} /// <summary>
/// 26进制字母转换成数字
/// </summary>
/// <param name="letter"></param>
/// <returns></returns>
private static int Letter_to_num(string str)
{
//此处判断是否是由A-Z字母组成的字符串，略（正在表达式片段）
char[] letter = str.ToCharArray(); //拆分字符串
int reNum = ;
int power = ; //用于次方算值
int times = ; //最高位需要加1
int num = letter.Length;//得到字符串个数
//得到最后一个字母的尾数值
reNum += Char_num(letter[num - ]);
//得到除最后一个字母的所以值,多于两位才执行这个函数
if (num >= )
{
for (int i = num - ; i > ; i--)
{
power = ;//致1，用于下一次循环使用次方计算
for (int j = ; j < i; j++) //幂，j次方，应该有函数
{
power *= ;
}
reNum += (power * (Char_num(letter[num - i - ]) + times)); //最高位需要加1，中间位数不需要加一
times = ;
}
}
//Console.WriteLine(letter.Length);
return reNum;
} /// <summary>
/// 输入字符得到相应的数字，这是最笨的方法，还可用ASIICK编码；
/// </summary>
/// <param name="ch"></param>
/// <returns></returns>
private static int Char_num(char ch)
{
switch (ch)
{
case 'A':
return ;
case 'B':
return ;
case 'C':
return ;
case 'D':
return ;
case 'E':
return ;
case 'F':
return ;
case 'G':
return ;
case 'H':
return ;
case 'I':
return ;
case 'J':
return ;
case 'K':
return ;
case 'L':
return ;
case 'M':
return ;
case 'N':
return ;
case 'O':
return ;
case 'P':
return ;
case 'Q':
return ;
case 'R':
return ;
case 'S':
return ;
case 'T':
return ;
case 'U':
return ;
case 'V':
return ;
case 'W':
return ;
case 'X':
return ;
case 'Y':
return ;
case 'Z':
return ;
}
return -;
}
}
}
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.OleDb; namespace xtar_biz_codegen
{
class ExcelHelper
{
public static string POSTFIX_97 = "XLS"; public static string POSTFIX_03 = "XLSX";
}
}
最后附送一个项目文件，可以自己测试：
http://pan.baidu.com/s/1msFuY