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导出导入Excel(DataSet,DataGrid)

2006-12-19 16:21 417 查看

using System;

using System.Data;

using System.Web;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

using System.Text.RegularExpressions;

using System.Xml;

using System.Xml.Xsl;

using System.IO;

using System.Xml.XPath;

namespace Document.Bll

{

/**//// <summary>

/// Summary description for ExportExcel.

/// </summary>

public class ExportExcel

{

public ExportExcel()

{

}

GetXslFile#region GetXslFile

private static void GetXslFile(DataSet ds,string xslPath)

{

string strColumn = "";

string strRow = "";

string dsName = ds.DataSetName;

string tableName = ds.Tables[0].TableName;

string header = dsName + "/" + tableName;

foreach(DataColumn clm in ds.Tables[0].Columns)

{

//特殊字符 <,>,",*,%,(,),& 替换

//*************************************************

// 符号 xml下的值 excel中的值

// < -------- _x003C_ ------ <

// > --------　_x003E_ ------ >

// " -------- _x0022_ ------ "

// * -------- _x002A_ ------ *

// % -------- _x0025_ ------ %

// & -------- _x0026_ ------ &

// ( -------- _x0028_ ------ (

// ) -------- _x0029_ ------ )

// = -------- _x003D_ ------ =

//*************************************************

string strClmName = clm.ColumnName;

string strRowName = clm.ColumnName;

if(strClmName.IndexOf("&")!=-1)

{

strClmName = strClmName.Replace("&","&");

}

if(strClmName.IndexOf("<")!=-1)

{

strClmName = strClmName.Replace("<","<");

}

if(strClmName.IndexOf(">")!=-1)

{

strClmName=strClmName.Replace(">",">");

}

if(strClmName.IndexOf("/"")!=-1)

{

strClmName=strClmName.Replace("/"",""");

}

if(strRowName.IndexOf("<")!=-1)

{

strRowName=strRowName.Replace("<","_x003C_");

}

if(strRowName.IndexOf(">")!=-1)

{

strRowName=strRowName.Replace(">","_x003E_");

}

if(strRowName.IndexOf("/"")!=-1)

{

strRowName=strRowName.Replace("/"","_x0022_");

}

if(strRowName.IndexOf("*")!=-1)

{

strRowName=strRowName.Replace("*","_x002A_");

}

if(strRowName.IndexOf("%")!=-1)

{

strRowName=strRowName.Replace("%","_x0025_");

}

if(strRowName.IndexOf("&")!=-1)

{

strRowName=strRowName.Replace("&","_x0026_");

}

if(strRowName.IndexOf("(")!=-1)

{

strRowName=strRowName.Replace("(","_x0028_");

}

if(strRowName.IndexOf(")")!=-1)

{

strRowName=strRowName.Replace(")","_x0029_");

}

if(strRowName.IndexOf("=")!=-1)

{

strRowName=strRowName.Replace("=","_x003D_");

}

strColumn += "<th>" + strClmName +"</th>" + "/r/n";

strRow += "<td>" + "<xsl:value-of select=" + "/"" + strRowName + "/"" +"/>" + "</td>" + "/r/n";

}

string str = @"<xsl:stylesheet version=""1.0"" xmlns:xsl=""http://www.w3.org/1999/XSL/Transform"">

<xsl:template match=""/"">

<head>

<style>

.xl24{mso-style-parent:style0;mso-number-format:""/@"";text-align:right;}

</style>

<xml>

<x:ExcelWorkbook>

<x:ExcelWorksheets>

<x:ExcelWorksheet>

<x:Name>Sheet1</x:Name>

<x:WorksheetOptions>

<x:ProtectContents>False</x:ProtectContents>

<x:ProtectObjects>False</x:ProtectObjects>

<x:ProtectScenarios>False</x:ProtectScenarios>

</x:WorksheetOptions>

</x:ExcelWorksheet>

</x:ExcelWorksheets>

</x:ExcelWorkbook>

</xml>

</head>

<body> ";

str += "/r/n" + @"<table border=""1"" cellpadding=""0"" cellspacing=""0"">

<tr>" + "/r/n";

str += strColumn;

str += @" </tr>

<xsl:for-each select="""+header+@""">

<tr>";

str += "/r/n" + strRow;

str += @"</tr>

</xsl:for-each>

</table>

</body>

</html>

</xsl:template>

</xsl:stylesheet> ";

string path =xslPath;

if(File.Exists(path))

{

File.Delete(path);

}

FileStream fs = File.Create(path);

StreamWriter sw=new StreamWriter(fs);

sw.Write(str);

sw.Close();

fs.Close();

}

#endregion

GetXmlFile#region GetXmlFile

private static void GetXmlFile(DataSet ds,string xmlFilePath)

{

string strXml = ds.GetXml();

if(File.Exists(xmlFilePath))

{

File.Delete(xmlFilePath);

}

FileStream fs1 = File.Create(xmlFilePath);

StreamWriter writer = new StreamWriter(fs1);

writer.Write(strXml);

writer.Close();

fs1.Close();

}

#endregion

BuildExcel#region BuildExcel

private static void BuildExcel(DataSet ds,string path)

{

if(File.Exists(path))

{

File.Delete(path);

}

string m_path = path.Substring(0,path.Length-4);

string m_fileXml = m_path + ".xml";

string m_fileXsl = m_path + ".xsl";

string m_fileXls = m_path + ".xls";

try

{

GetXmlFile(ds,m_fileXml);

GetXslFile(ds,m_fileXsl);

//Excel changed

XmlDocument doc = new XmlDocument();

doc.Load(m_fileXml);

XslTransform xslt = new XslTransform();

xslt.Load(m_fileXsl);

XmlElement root = doc.DocumentElement;

XPathNavigator nav = root.CreateNavigator();

XmlTextWriter writer = new XmlTextWriter(m_fileXls,null);

xslt.Transform(nav,null,writer,null);

writer.Close();

File.Delete(m_fileXml);

File.Delete(m_fileXsl);

}

catch

{

throw;

}

#endregion

ToExcel#region ToExcel

public static void ToExcel(System.Web.UI.Control ctl,string FileName)

{

HttpContext.Current.Response.Charset ="UTF-8";

HttpContext.Current.Response.ContentEncoding =System.Text.Encoding.Default;

HttpContext.Current.Response.ContentType ="application/ms-excel";

HttpContext.Current.Response.AppendHeader("Content-Disposition","attachment;filename="+""+FileName+".xls");

ctl.Page.EnableViewState =false;

System.IO.StringWriter tw = new System.IO.StringWriter();

System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);

ctl.RenderControl(hw);

HttpContext.Current.Response.Write(tw.ToString());

HttpContext.Current.Response.End();

}

#endregion

DownloadFile#region DownloadFile

public static void DownloadFile(string physicalFilePath)

{

FileStream stream=null;

try

{

stream = new FileStream(physicalFilePath, FileMode.Open, FileAccess.Read, FileShare.Read);

int bufSize = (int)stream.Length;

byte[] buf = new byte[bufSize];

int bytesRead = stream.Read(buf, 0, bufSize);

HttpContext.Current.Response.ContentType = "application/octet-stream";

HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename="+System.IO.Path.GetFileName(physicalFilePath));

HttpContext.Current.Response.OutputStream.Write(buf, 0, bytesRead);

HttpContext.Current.Response.End();

}

finally

{

stream.Close();

}

#endregion

}

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