导出Excel的四种方法

导出excel的几种方法
作者:YanJun 日期:2007-07-01
字体大小: 小 中 大
据我现在所知excel有四种方法：
1.

2.把web上的DataGrid直接导入到excel
public void ExportToExcel(System.Web.UI.Control ctl)
{
bool CurrCtlVisible=ctl.Visible;
ctl.Visible=true; Response.AppendHeader("Content-Disposition","attachment;filename=Excel.xls");
Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
Response.ContentType = "application/ms-excel";
ctl.Page.EnableViewState = false;
System.IO.StringWriter tw = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter hw = new HtmlTextWriter(tw);
ctl.RenderControl(hw);
Response.Write(tw.ToString());
Response.End();

ctl.Page.EnableViewState = true;
ctl.Visible=CurrCtlVisible;
}
3.在引用里调用Microsoft.Office.Interop.Excel.dll，原理是把数据存到DataTable、DataView或DataGrid中，然后再把数据一格一格的赋到excel的cell里去。
见如下代码：

public class ExportToExcel
{

私有成员#region 私有成员
// 数据的DataView
private DataView dv=null;

// 表格标题
private string title=null;

// 输出文件路径
private string outFilePath=null;


// 输入文件名
private string inputFilePath=System.Windows.Forms.Application.StartupPath+@" emplate.xls";

#endregion

公共属性#region 公共属性
/**////

/// 数据的DataView
///

public DataView DV
{
set
{
dv=value;
}
}

/**////

/// 表格标题
///

public string Title
{
set
{
title=value;
}
get
{
return title;
}
}

/**////

/// 输出文件路径
///

public string OutFilePath
{
set
{
outFilePath=value;
}
get
{
return outFilePath;
}
}

/**////

/// 输入文件路径
///

private string InputFilePath
{
set
{
inputFilePath=value;
}
get
{
return inputFilePath;
}
}

#endregion

构造函数#region 构造函数

public ExportToExcel()
{
}

// public OutputExcel(DataView dv,string title)
// {
//
// }

#endregion

公共方法#region 公共方法
/**///
public void CreateExcel()
{
int rowIndex=4;//行起始坐标
int colIndex=1;//列起始坐标

ApplicationClass myApp=null;
Workbook myBook=null;
Worksheet mySheet=null;

//如果文件不存在，则将模板文件拷贝一份作为输出文件
if(!File.Exists(outFilePath))
{
File.Copy(inputFilePath,outFilePath,true);
}

myApp= new ApplicationClass();
myApp.Visible=false;
object oMissiong=System.Reflection.Missing.Value;
myApp.Workbooks.Open(outFilePath,oMissiong,oMissiong,oMissiong,oMissiong,
oMissiong,oMissiong,oMissiong,oMissiong,oMissiong,oMissiong,oMissiong,
oMissiong,oMissiong,oMissiong);
myBook=myApp.Workbooks[1];
mySheet=(Worksheet)myBook.ActiveSheet;

//取得标题
foreach(DataColumn col in dv.Table.Columns)
{
colIndex++;
mySheet.Cells[4,colIndex] = col.ColumnName;
mySheet.get_Range(mySheet.Cells[4,colIndex],mySheet.Cells[4,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//设置标题格式为居中对齐
}

//取得表格中的数据
foreach(DataRowView row in dv)
{
rowIndex ++;
colIndex = 1;
foreach(DataColumn col in dv.Table.Columns)
{
colIndex ++;
if(col.DataType == System.Type.GetType("System.DateTime"))
{
mySheet.Cells[rowIndex,colIndex] = (Convert.ToDateTime(row[col.ColumnName].ToString())).ToString("yyyy-MM-dd");
mySheet.get_Range(mySheet.Cells[rowIndex,colIndex],mySheet.Cells[rowIndex,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//设置日期型的字段格式为居中对齐
}
else if(col.DataType == System.Type.GetType("System.String"))
{
mySheet.Cells[rowIndex,colIndex] = "'"+row[col.ColumnName].ToString();
mySheet.get_Range(mySheet.Cells[rowIndex,colIndex],mySheet.Cells[rowIndex,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//设置字符型的字段格式为居中对齐
}
else
{
mySheet.Cells[rowIndex,colIndex] = row[col.ColumnName].ToString();
}
}
}

//加载一个合计行
int rowSum = rowIndex + 1;
int colSum = 2;
mySheet.Cells[rowSum,2] = "合计";
mySheet.get_Range(mySheet.Cells[rowSum,2],mySheet.Cells[rowSum,2]).Horiz

ontalAlignment = XlHAlign.xlHAlignCenter;

//设置选中的部分的颜色
mySheet.get_Range(mySheet.Cells[rowSum,colSum],mySheet.Cells[rowSum,colIndex]).Select();
mySheet.get_Range(mySheet.Cells[rowSum,colSum],mySheet.Cells[rowSum,colIndex]).Interior.ColorIndex = 19;//设置为浅黄色，共计有56种

//取得整个报表的标题
mySheet.Cells[2,2] = title;

//设置整个报表的标题格式
mySheet.get_Range(mySheet.Cells[2,2],mySheet.Cells[2,2]).Font.Bold = true;
mySheet.get_Range(mySheet.Cells[2,2],mySheet.Cells[2,2]).Font.Size = 22;

//设置报表表格为最适应宽度
mySheet.get_Range(mySheet.Cells[4,2],mySheet.Cells[rowSum,colIndex]).Select();
mySheet.get_Range(mySheet.Cells[4,2],mySheet.Cells[rowSum,colIndex]).Columns.AutoFit();

//设置整个报表的标题为跨列居中
mySheet.get_Range(mySheet.Cells[2,2],mySheet.Cells[2,colIndex]).Select();
mySheet.get_Range(mySheet.Cells[2,2],mySheet.Cells[2,colIndex]).HorizontalAlignment = XlHAlign.xlHAlignCenterAcrossSelection;

//绘制边框
mySheet.get_Range(mySheet.Cells[4,2],mySheet.Cells[rowSum,colIndex]).Borders.LineStyle = 1;
mySheet.get_Range(mySheet.Cells[4,2],mySheet.Cells[rowSum,2]).Borders[XlBordersIndex.xlEdgeLeft].Weight = XlBorderWeight.xlThick;//设置左边线加粗
mySheet.get_Range(mySheet.Cells[4,2],mySheet.Cells[4,colIndex]).Borders[XlBordersIndex.xlEdgeTop].Weight = XlBorderWeight.xlThick;//设置上边线加粗
mySheet.get_Range(mySheet.Cells[4,colIndex],mySheet.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeRight].Weight = XlBorderWeight.xlThick;//设置右边线加粗
mySheet.get_Range(mySheet.Cells[rowSum,2],mySheet.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeBottom].Weight = XlBorderWeight.xlThick;//设置下边线加粗
myBook.Save();
myBook.Close( true,outFilePath,true);

System.Runtime.InteropServices.Marshal.ReleaseComObject(mySheet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(myBook);
System.Runtime.InteropServices.Marshal.ReleaseComObject(myApp);

myApp.Quit();
GC.Collect();
}
#endregion


}
4.另外，这就是另外一种方法了，建一个SqlServer的数据源，利用Excel的外部数据源让Excel自己从数据库取数据：

public void ExportToExcel(string pstrSql)
{
Excel.Application pApplication;
Excel._Workbook xBk;
Excel._Worksheet xSt;
Excel._QueryTable xQt;
string ExcelConn = "ODBC;DRIVER=SQL Server;SERVER=localhost;UID=sa;PWD=;APP=Microsoft(R) Windows (R) 2000 Operating System;WSID=me;DATABASE=pubs";
pApplication = new Excel.Applicati

onClass();
xBk = pApplication.Workbooks.Add(true);
xSt = (Excel._Worksheet)xBk.ActiveSheet;
pApplication.Cells[2,2] = this.title;

xSt.get_Range(pApplication.Cells[2,2],pApplication.Cells[2,2]).Font.Bold = true;
xSt.get_Range(pApplication.Cells[2,2],pApplication.Cells[2,2]) = "黑体";
xSt.get_Range(pApplication.Cells[2,2],pApplication.Cells[2,2]).Font.Size = 22;
xQt = xSt.QueryTables.Add(ExcelConn,xSt.get_Range(pApplication.Cells[4,2],pApplication.Cells[4,2]),pstrSql);
= "导出EXCEL";
xQt.FieldNames = true;
xQt.RowNumbers = false;
xQt.FillAdjacentFormulas = false;
xQt.PreserveFormatting = false;
xQt.BackgroundQuery = true;
xQt.RefreshStyle = Excel.XlCellInsertionMode.xlInsertDeleteCells;
xQt.AdjustColumnWidth = true;
xQt.RefreshPeriod = 0;
xQt.PreserveColumnInfo = true;
xQt.Refresh(xQt.BackgroundQuery);
pApplication.Visible = true;
}
这里的pstrSql指的是sql语句。