asp.net从数据库导出数据到word、excel、txt文本文件

using System;

using System.Data;

using System.Drawing;

using System.Data.SqlClient;

using Excel;

using Word;

using System.IO;

namespace Common

{

/// <summary>

/// 把数据导入到.doc、.txt、.xls文件中

/// </summary>

public class Export

{

private const string DATAWORDPATH = @"C:\folder\doc\datadoc\";

private const string IMAGEWORDPATH = @"C:\folder\doc\imagedoc\";

private const string IMAGEPATH = @"C:\folder\image\";

private const string EXCELPATH = @"C:\folder\excel\";

private const string TXTPATH = @"C:\folder\txt\";

private const string IMAGEPOSTFIX = ".bmp";

private const string WORDPOSTFIX = ".doc";

private const string EXCELPOSTFIX = ".xls";

private const string TXTPOSTFIX = ".txt";

private const int DATADISTANCE = 5;

private const int TABDISTANCE = 8;

public Export()

{

//

// TODO: 在此处添加构造函数逻辑

//

}

/// <summary>

/// 获得数据集Dataset--------------------------------用于调试

/// </summary>

/// <returns>Dataset</returns>

public DataSet GetData()

{

try

{

string sConnectionString;

sConnectionString = "workstation id=GUOFU;packet size=4096;user id=sa;data source=GUOFU;persist security info=True;initial catalog=YC;password=sc";

SqlConnection objConn = new SqlConnection(sConnectionString);

objConn.Open();

SqlDataAdapter daPoint = new SqlDataAdapter("Select * From Point", objConn);

DataSet dsYC = new DataSet("YC");

daPoint.FillSchema(dsYC,SchemaType.Mapped, "Point");

daPoint.Fill(dsYC,"Point");

daPoint = new SqlDataAdapter("Select * From Employee", objConn);

daPoint.FillSchema(dsYC,SchemaType.Mapped, "Employee");

daPoint.Fill(dsYC,"Employee");

return dsYC;

}

catch(Exception ex)

{

throw new Exception(ex.Message);

}

}

/// <summary>

/// 把数据文件导入到.xls文件

/// </summary>

/// <param name="ds"></param>

public void ExportToExcel(DataSet ds)

{

if(ds.Tables.Count!=0)

{

//生成.xls文件完整路径名

string tempFileName = GetTempFileName();

object filename = EXCELPATH+tempFileName+EXCELPOSTFIX;

object Nothing = System.Reflection.Missing.Value;

//创建excel文件，文件名用系统时间生成精确到毫秒

Excel.Application myExcel = new Excel.ApplicationClass();

myExcel.Application.Workbooks.Add(Nothing);

try

{

//把Dataset中的数据插入excel文件中

int totalCount = 0;

for(int k =0;k<ds.Tables.Count;k++)

{

int row = ds.Tables[k].Rows.Count;

int column = ds.Tables[k].Columns.Count;

for(int i = 0;i<column;i++)

{

myExcel.Cells[totalCount+2,1+i] = ds.Tables[k].Columns[i].ColumnName;

}

for(int i = 0;i<row;i++)

{

for(int j =0;j<column;j++)

{

myExcel.Cells[totalCount+3+i,1+j] = "'" + ds.Tables[k].Rows[i][j].ToString();

}

}

totalCount = totalCount + row +4;

}

try

{

//保存excel文件到指定的目录下，文件名用系统时间生成精确到毫秒

myExcel.ActiveWorkbook._SaveAs(filename,Nothing,Nothing,Nothing,Nothing,Nothing,XlSaveAsAccessMode.xlExclusive,Nothing,Nothing,Nothing,Nothing);

}

catch

{

System.Windows.Forms.MessageBox.Show("系统找不到指定目录下的文件： "+EXCELPATH+tempFileName+EXCELPOSTFIX);

return;

}

//让生成的excel文件可见

myExcel.Visible = true;

}

catch(Exception e)

{

System.Windows.Forms.MessageBox.Show("向excel文件中写入数据出错： " + e.Message);

}

}

else

{

System.Windows.Forms.MessageBox.Show("No Data");

}

}

/// <summary>

/// 把数据导入到.doc文件

/// </summary>

/// <param name="ds"></param>

public void ExportToWord(DataSet ds)

{

if(ds.Tables.Count!=0)

{

string tempFileName = null;

object filename = null;

object tableBehavior = Word.WdDefaultTableBehavior.wdWord9TableBehavior;

object autoFitBehavior = Word.WdAutoFitBehavior.wdAutoFitFixed;

object unit = Word.WdUnits.wdStory;

object extend = System.Reflection.Missing.Value;

object breakType = (int)Word.WdBreakType.wdSectionBreakNextPage;

object count = 1;

object character = Word.WdUnits.wdCharacter;

object Nothing = System.Reflection.Missing.Value;

try

{

tempFileName = GetTempFileName();

//生成.doc文件完整路径名

filename = DATAWORDPATH+tempFileName+WORDPOSTFIX;

//创建一个word文件，文件名用系统时间生成精确到毫秒

Word.Application myWord= new Word.ApplicationClass();

Word._Document myDoc = new Word.DocumentClass();

myDoc = myWord.Documents.Add(ref Nothing,ref Nothing,ref Nothing,ref Nothing);

myDoc.Activate();

//向把dataset中的表插入到word的文件中

for(int totalTable = 0;totalTable<ds.Tables.Count;totalTable++)

{

myWord.Application.Selection.TypeText(ds.Tables[totalTable].TableName+"表的数据如下");

myWord.Application.Selection.TypeParagraph();

myWord.Application.Selection.TypeParagraph();

Word.Range para = myWord.Application.Selection.Range;

myDoc.Tables.Add(para,ds.Tables[totalTable].Rows.Count+1,ds.Tables[totalTable].Columns.Count,ref tableBehavior,ref autoFitBehavior);

for(int column = 0; column<ds.Tables[totalTable].Columns.Count;column++)

{

myDoc.Tables.Item(totalTable+1).Cell(1,column+1).Range.InsertBefore(ds.Tables[0].Columns[column].ColumnName.Trim());

}

for(int row = 0;row<ds.Tables[totalTable].Rows.Count;row++)

{

for(int column = 0;column<ds.Tables[totalTable].Columns.Count;column++)

{

myDoc.Tables.Item(totalTable+1).Cell(row+2,column+1).Range.InsertBefore(ds.Tables[totalTable].Rows[row][column].ToString().Trim());

}

}

myWord.Application.Selection.EndKey(ref unit,ref extend);

myWord.Application.Selection.TypeParagraph();

myWord.Application.Selection.TypeParagraph();

myWord.Application.Selection.InsertBreak(ref breakType);

}

myWord.Application.Selection.TypeBackspace();

myWord.Application.Selection.Delete(ref character,ref count);

myWord.Application.Selection.HomeKey(ref unit,ref extend);

//保存word文件到指定的目录下

try

{

myDoc.SaveAs(ref filename,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing);

myWord.Visible = true;

}

catch

{

System.Windows.Forms.MessageBox.Show("系统找不到指定目录下的文件： "+DATAWORDPATH+tempFileName+WORDPOSTFIX);

return;

}

//让生成的excel文件可见

myWord.Visible = true;

}

catch(Exception ex)

{

System.Windows.Forms.MessageBox.Show("向word文件中写入数据出错： " + ex.Message);

}

}

else

{

System.Windows.Forms.MessageBox.Show("No Data");

}

}

/// <summary>

/// 把图片文件导入到.doc文件

/// </summary>

/// <param name="bp"></param>

public void ExportToWord(Bitmap bp)

{

string tempFileName = null;

string bmpPath = null;

object filename = null;

object Nothing = null;

tempFileName = GetTempFileName();

//生成.bmp文件完整路径名

bmpPath = IMAGEPATH+tempFileName+IMAGEPOSTFIX;

//生成.doc文件完整路径名

filename = IMAGEWORDPATH+tempFileName+WORDPOSTFIX;

Nothing = System.Reflection.Missing.Value;

//创建一个word文件，文件名用系统时间生成精确到毫秒

Word.Application myWord= new Word.ApplicationClass();

Word._Document myDoc = new Word.DocumentClass();

myDoc = myWord.Documents.Add(ref Nothing,ref Nothing,ref Nothing,ref Nothing);

try

{

//把bitmap对象保存到系统所生成文件完整路径中

bp.Save(bmpPath);

}

catch

{

System.Windows.Forms.MessageBox.Show("系统找不到指定目录下的文件： "+bmpPath);

return;

}

try

{

//往word文件中插入图片

myDoc.InlineShapes.AddPicture(bmpPath,ref Nothing,ref Nothing,ref Nothing);

}

catch

{

System.Windows.Forms.MessageBox.Show("系统找不到指定目录下的文件： "+bmpPath);

return;

}

try

{

//保存word文件到指定的目录下

myDoc.SaveAs(ref filename,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing,ref Nothing);

}

catch

{

System.Windows.Forms.MessageBox.Show("系统找不到指定目录下的文件： "+IMAGEWORDPATH+tempFileName+WORDPOSTFIX);

return;

}

//让生成的word文件可见

myWord.Visible = true;

}

/// <summary>

/// 把数据文件导入到.txt文件

/// </summary>

/// <param name="ds"></param>

public void ExportToTxt(DataSet ds)

{

if(ds.Tables.Count!=0)

{

string tempFileName = null;

tempFileName = GetTempFileName();

//创建一个.txt文件，文件名用系统时间生成精确到毫秒

FileInfo file = new FileInfo(TXTPATH+tempFileName+TXTPOSTFIX);

StreamWriter textFile = null;

try

{

textFile = file.CreateText();

}

catch

{

System.Windows.Forms.MessageBox.Show("系统找不到指定目录下的文件： "+TXTPATH+tempFileName+TXTPOSTFIX);

return;

}

//把Dataset中的数据写入.txt文件中

for(int totaltable = 0;totaltable<ds.Tables.Count;totaltable++)

{

//统计dataset中当前表的行数

int row = ds.Tables[totaltable].Rows.Count;

//统计dataset中当前表的列数

int column = ds.Tables[totaltable].Columns.Count;

//用于统计当前表中每列记录中字符数最长的字符串的长度之和

int totalLength = 0;

//用于统计标题的长度（dataset中的表名的length+"表的数据如下"的length）

int titleLength = 0;

//统计每列记录中字符数最长的字符串的长度

int[] columnLength = new int[column];

for(int i = 0;i<column;i++)

{

columnLength[i] = ds.Tables[totaltable].Columns[i].ColumnName.ToString().Length;

}

for(int i = 0;i<row;i++)

{

for(int j = 0;j<column;j++)

{

if(ds.Tables[totaltable].Rows[i][j].ToString().Length>columnLength[j])

{

columnLength[j]=ds.Tables[totaltable].Rows[i][j].ToString().Length;

}

}

}

//统计当前表中每列记录中字符数最长的字符串的长度之和

for(int i = 0;i<column;i++)

{

totalLength = totalLength+columnLength[i]+DATADISTANCE;

}

totalLength = totalLength+2*TABDISTANCE-DATADISTANCE;

//统计标题的长度（dataset中的当前表名的length+"表的数据如下"的length）

titleLength = ds.Tables[totaltable].TableName.ToString().Length+"表的数据如下".Length*2;

//把标题写入.txt文件中

for(int i = 0;i<(int)((totalLength-titleLength)/2);i++)

{

textFile.Write(' ');

}

textFile.Write(ds.Tables[totaltable].TableName+"表的数据如下");

textFile.WriteLine();

for(int i = 0;i<totalLength;i++)

{

textFile.Write('*');

}

textFile.WriteLine();

textFile.Write("\t");

//把dataset中当前表的字段名写入.txt文件中

for(int i = 0;i<column;i++)

{

textFile.Write(ds.Tables[totaltable].Columns[i].ColumnName.ToString());

for(int k = 0;k<columnLength[i]-ds.Tables[totaltable].Columns[i].ColumnName.ToString().Length+DATADISTANCE;k++)

{

textFile.Write(' ');

}

}

textFile.WriteLine();

for(int i = 0;i<totalLength;i++)

{

textFile.Write('-');

}

textFile.WriteLine();

textFile.Write("\t");

//把dataset中当前表的数据写入.txt文件中

for(int i = 0;i<row;i++)

{

for(int j = 0;j<column;j++)

{

textFile.Write(ds.Tables[totaltable].Rows[i][j].ToString());

for(int k = 0;k<columnLength[j]-ds.Tables[totaltable].Rows[i][j].ToString().Length+DATADISTANCE;k++)

{

textFile.Write(' ');

}

}

textFile.WriteLine();

textFile.Write("\t");

}

textFile.WriteLine();

for(int i = 0;i<totalLength;i++)

{

textFile.Write('-');

}

textFile.WriteLine();

textFile.WriteLine();

textFile.WriteLine();

}

//关闭当前的StreamWriter流

textFile.Close();

System.Windows.Forms.MessageBox.Show("数据文件已保存到"+" "+file.FullName);

}

else

{

System.Windows.Forms.MessageBox.Show("No Data");

}

}

public string GetTempFileName()

{

return DateTime.Now.ToString("yyyyMMddhhmmssfff");

}

}

}

补充：使用以上方法必须对dcom进行配置，给用户使用office的权限。

具体配置方法如下:

1:在服务器上安装office的Excel软件.

2:在"开始"->"运行"中输入dcomcnfg.exe启动"组件服务"

3:依次双击"组件服务"->"计算机"->"我的电脑"->"DCOM配置"

4:在"DCOM配置"中找到"Microsoft Excel 应用程序",在它上面点击右键,然后点击"属性",弹出"Microsoft Excel 应用程序属性"对话框

5:点击"标识"标签,选择"交互式用户"

6:点击"安全"标签,在"启动和激活权限"上点击"自定义",然后点击对应的"编辑"按钮,在弹出的"安全性"对话框中填加一个"NETWORK SERVICE"用户(注意要选择本计算机名),并给它赋予"本地启动"和"本地激活"权限.

7:依然是"安全"标签,在"访问权限"上点击"自定义",然后点击"编辑",在弹出的"安全性"对话框中也填加一个"NETWORK SERVICE"用户,然后赋予"本地访问"权限.

这样,我们便配置好了相应的Excel的DCOM权限.

注意:我是在WIN2003上配置的,在2000上,是配置ASPNET用户

若不进行配置会出现错误

检索 COM 类工厂中 CLSID 为 {00024500-0000-0000-C000-000000000046} 的组件时失败，原因是出现以下错误: 80070005。

原因是用户没有使用Excel的权限。

导出到word同样要配置使用word的权限。

继续补充： 导出到txt我用了上面的方法有问题，

try

{

textFile = file.CreateText();

}

catch

{

System.Windows.Forms.MessageBox.Show("系统找不到指定目录下的文件： "+TXTPATH+tempFileName+TXTPOSTFIX);

return;

}

总是在这里跳到catch里面。导出到word,excel都能用，继续研究txt的使用方法。