对.NET中导出数据到EXCEL的几种方法探讨
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{
string sqlstr;
if(fi.Exists)
{
// throw new Exception("文件删除失败");
else
{
fi.Create();
}
string sqlcon=@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended ProPerties=Excel 8.0;";
OleDbConnection olecon = new OleDbConnection(sqlcon);
OleDbCommand olecmd = new OleDbCommand();
olecmd.Connection = olecon;
olecmd.CommandType = CommandType.Text;
try
{
int ii = 0;
sqlstr = "CREATE TABLE sheet1(";
foreach(XmlNode xnode in nodec.ChildNodes )
{
if(ii == nodec.ChildNodes.Count - 1)
{
if(xnode.Attributes["type"].Value.ToLower() == "int"||xnode.Attributes["type"].Value.ToLower() == "decimal")
{
sqlstr=sqlstr + xnode.Attributes["displayname"].Value + " number)";
}
else
{
sqlstr=sqlstr + xnode.Attributes["displayname"].Value + " text)";
}
// sqlstr=sqlstr + xnode.Attributes["displayname"].Value + " text)";
}
else
{
if(xnode.Attributes["type"].Value.ToLower() == "int"||xnode.Attributes["type"].Value.ToLower() == "decimal")
{
sqlstr=sqlstr + xnode.Attributes["displayname"].Value + " number,";
}
else
{
sqlstr=sqlstr + xnode.Attributes["displayname"].Value + " text,";
}
// sqlstr =sqlstr + xnode.Attributes["displayname"].Value + " text";
ii++;
}
olecmd.ExecuteNonQuery();
{
sqlstr = "INSERT INTO sheet1 VALUES(";
int jj=0;
{
if(jj == nodec.ChildNodes.Count-1)
{
if(inode.Attributes["type"].Value.ToLower() == "int"||inode.Attributes["type"].Value.ToLower() == "decimal")
{
sqlstr = sqlstr + isnull(ds.Tables[0].Rows[i].ItemArray[jj].ToString()) + ")" ;
}
else
{
sqlstr = sqlstr + "'" + isnull(ds.Tables[0].Rows[i].ItemArray[jj].ToString().Replace("'","''")) + "')" ;
}
else
{
if(inode.Attributes["type"].Value.ToLower() == "int"||inode.Attributes["type"].Value.ToLower() == "decimal")
{
sqlstr = sqlstr + isnull(ds.Tables[0].Rows[i].ItemArray[jj].ToString()) + "," ;
}
else
{
sqlstr = sqlstr + "'" + isnull(ds.Tables[0].Rows[i].ItemArray[jj].ToString().Replace("'","''")) + "'," ;
}
}
jj++;
olecmd.ExecuteNonQuery();
MessageBox.Show(@"Excel文件:" + filePath + " 导出成功!");
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
olecmd.Dispose();
olecon.Close();
olecon.Dispose();
}
/// <summary>
/// change to string "null" if input is null
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
private static string isnull(string obj)
{
if(obj.Length >0)
{
return obj;
}
else
{
return "null";
}
///2007-03-02
最近发现几个导出到EXCEL的方法,这里先记录下来
4.本示例是用于将ListView中的内容倒入到Excel 与常用的逐单元格写不同的是,本例子采用数据写入到range的方法。该方法效率明显较高
Excel.Application app = new Excel.ApplicationClass();
if( app == null)
{
MessageBox.Show("Excel无法启动");
return;
}
app.Visible = true;
Excel.Workbooks wbs = app.Workbooks;
Excel.Workbook wb = wbs.Add(Missing.Value);
Excel.Worksheet ws = (Excel.Worksheet)wb.Worksheets[1];
Excel.Range r = ws.get_Range("A1","H1");
object [] objHeader = {"标题1","标题2","标题3","标题4","标题5","标题6","标题7","标题8"};
r.Value = objHeader;
if (lv.Items.Count >0)
{
r = ws.get_Range("A2",Missing.Value);
object [,] objData = new Object[this.lv.Items.Count,8];
foreach(ListViewItem lvi in lv.Items)
{
objData[lvi.Index,0] = lvi.Text;
objData[lvi.Index,1] = lvi.SubItems[1].Text;
objData[lvi.Index,2] = lvi.SubItems[2].Text;
objData[lvi.Index,3] = lvi.SubItems[3].Text;
objData[lvi.Index,4] = lvi.SubItems[4].Text;
objData[lvi.Index,5] = lvi.SubItems[5].Text;
objData[lvi.Index,6] = lvi.SubItems[6].Text;
objData[lvi.Index,7] = lvi.SubItems[7].Text;
}
r = r.get_Resize(lv.Items.Count,8);
r.Value = objData;
r.EntireColumn.AutoFit();
}
app = null;
5.由XML文件导出为EXCEL文件
目录下kfcccer.xml为原始数据XML文件,点击生成后会在同级目录下生成kfcccer.xls文件
页面代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>XML转换Excel演示</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<div>
<asp:Button ID="btnChange" runat="server" Font-Bold="True" Font-Size="18pt" ForeColor="Black"
Height="38px" OnClick="btnChange_Click" Text="开始转换" Width="203px" /></div>
</div>
</form>
</body>
</html>
后台代码:
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnChange_Click(object sender, EventArgs e)
{
try
{
//要转换的XML文件
string XMLFileName = Path.Combine(Request.PhysicalApplicationPath, "kfcccer.xml");
DataSet dsBook = new DataSet();
dsBook.ReadXml(XMLFileName);
int rows = dsBook.Tables[0].Rows.Count + 1;
int cols = dsBook.Tables[0].Columns.Count;
//将要生成的Excel文件
string ExcelFileName = Path.Combine(Request.PhysicalApplicationPath, "kfcccer.xls");
if (File.Exists(ExcelFileName))
{
File.Delete(ExcelFileName);
}
StreamWriter writer = new StreamWriter(ExcelFileName, false);
writer.WriteLine("<?xml version="1.0"?>");
writer.WriteLine("<?mso-application progid="Excel.Sheet"?>");
writer.WriteLine("<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"");
writer.WriteLine(" xmlns:o="urn:schemas-microsoft-com:office:office"");
writer.WriteLine(" xmlns:x="urn:schemas-microsoft-com:office:excel"");
writer.WriteLine(" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"");
writer.WriteLine(" xmlns:html="http://www.w3.org/TR/REC-html40/">");
writer.WriteLine(" <DocumentProperties xmlns="urn:schemas-microsoft-com:office:office">");
writer.WriteLine(" <Author>Automated Report Generator Example</Author>");
writer.WriteLine(string.Format(" <Created>{0}T{1}Z</Created>", DateTime.Now.ToString("yyyy-mm-dd"), DateTime.Now.ToString("HH:MM:SS")));
writer.WriteLine(" <Company>51aspx.com</Company>");
writer.WriteLine(" <Version>11.6408</Version>");
writer.WriteLine(" </DocumentProperties>");
writer.WriteLine(" <ExcelWorkbook xmlns="urn:schemas-microsoft-com:office:excel">");
writer.WriteLine(" <WindowHeight>8955</WindowHeight>");
writer.WriteLine(" <WindowWidth>11355</WindowWidth>");
writer.WriteLine(" <WindowTopX>480</WindowTopX>");
writer.WriteLine(" <WindowTopY>15</WindowTopY>");
writer.WriteLine(" <ProtectStructure>False</ProtectStructure>");
writer.WriteLine(" <ProtectWindows>False</ProtectWindows>");
writer.WriteLine(" </ExcelWorkbook>");
writer.WriteLine(" <Styles>");
writer.WriteLine(" <Style ss:ID="Default" ss:Name="Normal">");
writer.WriteLine(" <Alignment ss:Vertical="Bottom"/>");
writer.WriteLine(" <Borders/>");
writer.WriteLine(" <Font/>");
writer.WriteLine(" <Interior/>");
writer.WriteLine(" <Protection/>");
writer.WriteLine(" </Style>");
writer.WriteLine(" <Style ss:ID="s21">");
writer.WriteLine(" <Alignment ss:Vertical="Bottom" ss:WrapText="1"/>");
writer.WriteLine(" </Style>");
writer.WriteLine(" </Styles>");
writer.WriteLine(" <Worksheet ss:Name="MyReport">");
writer.WriteLine(string.Format(" <Table ss:ExpandedColumnCount="{0}" ss:ExpandedRowCount="{1}" x:FullColumns="1"", cols.ToString(), rows.ToString()));
writer.WriteLine(" x:FullRows="1">");
//生成标题
writer.WriteLine("<Row>");
foreach (DataColumn eachCloumn in dsBook.Tables[0].Columns)
{
writer.Write("<Cell ss:StyleID="s21"><Data ss:Type="String">");
writer.Write(eachCloumn.ColumnName.ToString());
writer.WriteLine("</Data></Cell>");
}
writer.WriteLine("</Row>");
//生成数据记录
foreach (DataRow eachRow in dsBook.Tables[0].Rows)
{
writer.WriteLine("<Row>");
for (int currentRow = 0; currentRow != cols; currentRow++)
{
writer.Write("<Cell ss:StyleID="s21"><Data ss:Type="String">");
writer.Write(eachRow[currentRow].ToString());
writer.WriteLine("</Data></Cell>");
}
writer.WriteLine("</Row>");
}
writer.WriteLine(" </Table>");
writer.WriteLine(" <WorksheetOptions xmlns="urn:schemas-microsoft-com:office:excel">");
writer.WriteLine(" <Selected/>");
writer.WriteLine(" <Panes>");
writer.WriteLine(" <Pane>");
writer.WriteLine(" <Number>3</Number>");
writer.WriteLine(" <ActiveRow>1</ActiveRow>");
writer.WriteLine(" </Pane>");
writer.WriteLine(" </Panes>");
writer.WriteLine(" <ProtectObjects>False</ProtectObjects>");
writer.WriteLine(" <ProtectScenarios>False</ProtectScenarios>");
writer.WriteLine(" </WorksheetOptions>");
writer.WriteLine(" </Worksheet>");
writer.WriteLine(" <Worksheet ss:Name="Sheet2">");
writer.WriteLine(" <WorksheetOptions xmlns="urn:schemas-microsoft-com:office:excel">");
writer.WriteLine(" <ProtectObjects>False</ProtectObjects>");
writer.WriteLine(" <ProtectScenarios>False</ProtectScenarios>");
writer.WriteLine(" </WorksheetOptions>");
writer.WriteLine(" </Worksheet>");
writer.WriteLine(" <Worksheet ss:Name="Sheet3">");
writer.WriteLine(" <WorksheetOptions xmlns="urn:schemas-microsoft-com:office:excel">");
writer.WriteLine(" <ProtectObjects>False</ProtectObjects>");
writer.WriteLine(" <ProtectScenarios>False</ProtectScenarios>");
writer.WriteLine(" </WorksheetOptions>");
writer.WriteLine(" </Worksheet>");
writer.WriteLine("</Workbook>");
writer.Close();
Response.Write("<script language="javascript">" + "alert('" + "转换成功! 转换后的Excel文件名为: kfcccer.xls')" + "</script>");
}
catch (Exception ex)
{
Response.Write("<script language="javascript">" + "alert('" + "操作失败! 出错信息: " + ex.Message + "')" + "</script>");
}
}
}
6.以模版形式导出为EXCEL文件
最近在项目中看到同事的一个导出的解决方案,感觉很不错,以前我如果碰到有些客户要按某些格式把数据导出为EXCEL时,就会感觉很麻烦,有段时间会用水晶报表导出EXCEL的形式来做,但效果很不好,有些控件会提供对应的方法,但这不是我们这些人所喜欢的,我喜欢能自己编,而不喜欢给人已经封装好的东西,除非他提供原代码也可以,呵呵。其实这个方案说起来很简单,就是先做好一个EXCEL模版,然后用代码把对应的数据填进去,这样就可以很好的满足客户的按格式导出的需求,而且还可以让客户来提供模版,这样效果更佳,下面就贴些关键代码:
ApplicationClass oExcel = null;
Workbook wb = null;
Sheets sheets = null;
_Worksheet worksheet = null;
Range range = null;
。。。。
public void showBookingData(DataSet ds)
{
showBrHeard(ds.Tables["BR_HEAD"]);
showReference(ds.Tables["BR_REFERENCE"]);
showBrConta(ds.Tables["BR_CONTAINER"]);
showBrCargo(ds.Tables["BR_CARGO"]);
showBrParties(ds.Tables["BR_PARTIES"]);
showBrLocation(ds.Tables["BR_LOCATION"]);
showBrDoor(ds.Tables["BR_DOOR"]);
}
#region 显示Booking数据
private void showBrHeard(System.Data.DataTable dt)
{
if (dt.Rows.Count > 0)
{
DataRow dRow = dt.Rows[0];
if (bkType != "temp")
{
this.range = this.worksheet.get_Range("A2", Type.Missing);
this.range.Value2 = "'"+dRow["CMC_BR_NUMBER"].ToString();
}
this.range = this.worksheet.get_Range("G2", Type.Missing);
this.range.Value2 = Utility.GetCarrier(dRow["SCAC_CODE"].ToString());
this.range = this.worksheet.get_Range("F11", Type.Missing);
String tfc = dRow["TRAFFIC_MODE"].ToString();
this.range.Value2 = Utility.GetTrafficById(Convert.ToDecimal(tfc));
String drm = dRow["PICKUP_DELIVERY"].ToString();
this.range = this.worksheet.get_Range("H11", Type.Missing);
this.range.Value2 = Utility.GetDragModeById(Convert.ToDecimal(drm)).ToUpper();
if (dRow["VESSEL_NAME"].ToString().Trim().Length != 0)
{
this.range = this.worksheet.get_Range("A23", Type.Missing);
this.range.Value2 = dRow["VESSEL_NAME"].ToString() + "/" + dRow["VESSEL_VOYAGE"].ToString();
}
else
{
if (dRow["EST_DEPARTDATE"].ToString().Trim().Length != 0)
{
this.range = this.worksheet.get_Range("D23", Type.Missing);
this.range.Value2 = Convert.ToDateTime(dRow["EST_DEPARTDATE"]).ToString("yyyy-MM-dd");
}
else if (dRow["EST_ARRIVDATE"].ToString().Trim().Length != 0)
{
this.range = this.worksheet.get_Range("C23", Type.Missing);
this.range.Value2 = Convert.ToDateTime(dRow["EST_ARRIVDATE"]).ToString("yyyy-MM-dd");
}
}
writeStrDate("A", 41, dRow["REMARK"].ToString() + "/n");
if (bkType != "temp")
{
if (dRow["BR_NUMBER"] != null && dRow["BR_NUMBER"].ToString() != "")
{
strRN += "Booking No." + dRow["BR_NUMBER"].ToString() + "/n";
}
}
if (dRow["RATE_REFNO"] != null && dRow["RATE_REFNO"].ToString() != "")
{
strRN += "Contact No." + dRow["RATE_REFNO"].ToString() + "/n";
}
}
}
。。。。。。。
做法简单,但效果很好。唯一缺点就是速度比较慢,而且受限制比较多。
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