Excel相关操作(转)
在页面上点击服务器按钮输出Excel只能输出一次(第二次点击按钮无反应):
添加以下js:
<script type='text/javascript'>
_spOriginalFormAction = document.forms[0].action;
_spSuppressFormOnSubmitWrapper=true;
</script>
转自:
http://www.cnblogs.com/stswordman/archive/2006/08/24/485641.html
和
http://www.cnblogs.com/xiaotao823/archive/2008/09/26/1299364.html
C# 将数据导出到Excel汇总
在asp.net中导出Excel有两种方法,一种是将导出的文件存放在服务器某个文件夹下面,然后将文件地址输出在浏览器上;一种是将文件直接将文件输出流写给浏览器。在Response输出时,t分隔的数据,导出Excel时,等价于分列,n等价于换行。
1、将整个html全部输出Excel
此法将html中所有的内容,如按钮,表格,图片等全部输出到Excel中。
Response.Buffer= true;
Response.AppendHeader("Content-Disposition","attachment;filename="+DateTime.Now.ToString("yyyyMMdd")+".xls");
Response.ContentEncoding=System.Text.Encoding.UTF8;
Response.ContentType = "application/vnd.ms-excel";
this.EnableViewState = false;
这里我们利用了ContentType属性,它默认的属性为text/html,这时将输出为超文本,即我们常见的网页格式到客户端,如果改为ms-excel将将输出excel格式,也就是说以电子表格的格式输出到客户端,这时浏览器将提示你下载保存。ContentType的属性还包括:image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword 。同理,我们也可以输出(导出)图片、word文档等。下面的方法,也均用了这个属性。
2、将DataGrid控件中的数据导出Excel
上述方法虽然实现了导出的功能,但同时把按钮、分页框等html中的所有输出信息导了进去。而我们一般要导出的是数据,DataGrid控件上的数据。
//DataGrid1是你在窗体中拖放的控件
HttpContext.Current.Response.AppendHeader("Content-Disposition","attachment;filename=Excel.xls");
HttpContext.Current.Response.Charset ="UTF-8";
HttpContext.Current.Response.ContentEncoding =System.Text.Encoding.Default;
HttpContext.Current.Response.ContentType ="application/ms-excel";
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();
如果你的DataGrid用了分页,它导出的是当前页的信息,也就是它导出的是DataGrid中显示的信息。而不是你select语句的全部信息。
为方便使用,写成方法如下:
{
HttpContext.Current.Response.AppendHeader("Content-Disposition","attachment;filename=Excel.xls");
HttpContext.Current.Response.Charset ="UTF-8";
HttpContext.Current.Response.ContentEncoding =System.Text.Encoding.Default;
HttpContext.Current.Response.ContentType ="application/ms-excel";
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();
}
用法:DGToExcel(datagrid1);
并且还需要override一下VerifyRenderingInServerForm方法(这一点非常重要,否则在点击按钮后会报错,译者注),代码如下:
public override void VerifyRenderingInServerForm(Control control) { } |
个人补充:
如果在UserControl中使用的时候,无法执行VerifyRenderingInServerForm的时候,可以使用这个方式:
public static void ToExcelJT(System.Web.UI.Page page, DataTable tab, string FileName)
{
System.Web.HttpResponse httpresponse = page.Response;
System.Web.UI.WebControls.DataGrid datagrid = new System.Web.UI.WebControls.DataGrid();
datagrid.DataSource = tab.DefaultView;
datagrid.AllowPaging = false;
datagrid.HeaderStyle.BackColor = System.Drawing.Color.LightGray;
datagrid.HeaderStyle.HorizontalAlign = HorizontalAlign.Center;
datagrid.HeaderStyle.Font.Bold = true;
datagrid.DataBind();
HttpContext.Current.Response.Charset = "UTF-8";
//HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Default;
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
HttpContext.Current.Response.ContentType = "application/ms-excel";
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + "" + FileName);
System.IO.StringWriter tw = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);
datagrid.RenderControl(hw);
HttpContext.Current.Response.Write(tw.ToString());
HttpContext.Current.Response.End();
}
即:根据DataTable重新生成Grid。
3、将DataSet中的数据导出Excel
有了上边的思路,就是将在导出的信息,输出(Response)客户端,这样就可以导出了。那么把DataSet中的数据导出,也就是把DataSet中的表中的各行信息,以ms-excel的格式Response到http流,这样就OK了。说明:参数ds应为填充有数据表的DataSet,文件名是全名,包括后缀名,如Excel2006.xls
public void CreateExcel(DataSet ds,string FileName)
{
HttpResponse resp;
resp = Page.Response;
resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
resp.AppendHeader("Content-Disposition", "attachment;filename="+FileName);
string colHeaders= "", ls_item="";
//定义表对象与行对象,同时用DataSet对其值进行初始化
DataTable dt=ds.Tables[0];
DataRow[] myRow=dt.Select();//可以类似dt.Select("id>10")之形式达到数据筛选目的
int i=0;
int cl=dt.Columns.Count;
//取得数据表各列标题,各标题之间以t分割,最后一个列标题后加回车符
for(i=0;i<cl;i++)
{
if(i==(cl-1))//最后一列,加n
{
colHeaders +=dt.Columns[i].Caption.ToString() +"n";
}
else
{
colHeaders+=dt.Columns[i].Caption.ToString()+"t";
}
}
resp.Write(colHeaders);
//向HTTP输出流中写入取得的数据信息
//逐行处理数据
foreach(DataRow row in myRow)
{
//当前行数据写入HTTP输出流,并且置空ls_item以便下行数据
for(i=0;i<cl;i++)
{
if(i==(cl-1))//最后一列,加n
{
ls_item +=row[i].ToString()+"n";
}
else
{
ls_item+=row[i].ToString()+"t";
}
}
resp.Write(ls_item);
ls_item="";
}
resp.End();
}
4、将dataview导出excel
若想实现更加富于变化或者行列不规则的excel导出时,可用本法。
{
//dv为要输出到Excel的数据,str为标题名称
GC.Collect();
Application excel;// = new Application();
int rowIndex=4;
int colIndex=1;
_Workbook xBk;
_Worksheet xSt;
excel= new ApplicationClass();
xBk = excel.Workbooks.Add(true);
xSt = (_Worksheet)xBk.ActiveSheet;
//
//取得标题
//
foreach(DataColumn col in dv.Table.Columns)
{
colIndex++;
excel.Cells[4,colIndex] = col.ColumnName;
xSt.get_Range(excel.Cells[4,colIndex],excel.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"))
{
excel.Cells[rowIndex,colIndex] = (Convert.ToDateTime(row[col.ColumnName].ToString())).ToString("yyyy-MM-dd");
xSt.get_Range(excel.Cells[rowIndex,colIndex],excel.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"))
{
excel.Cells[rowIndex,colIndex] = "'"+row[col.ColumnName].ToString();
xSt.get_Range(excel.Cells[rowIndex,colIndex],excel.Cells[rowIndex,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//设置字符型的字段格式为居中对齐
}
else
{
excel.Cells[rowIndex,colIndex] = row[col.ColumnName].ToString();
}
}
}
//
//加载一个合计行
//
int rowSum = rowIndex + 1;
int colSum = 2;
excel.Cells[rowSum,2] = "合计";
xSt.get_Range(excel.Cells[rowSum,2],excel.Cells[rowSum,2]).HorizontalAlignment = XlHAlign.xlHAlignCenter;
//
//设置选中的部分的颜色
//
xSt.get_Range(excel.Cells[rowSum,colSum],excel.Cells[rowSum,colIndex]).Select();
xSt.get_Range(excel.Cells[rowSum,colSum],excel.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
//
excel.Cells[2,2] = str;
//
//设置整个报表的标题格式
//
xSt.get_Range(excel.Cells[2,2],excel.Cells[2,2]).Font.Bold = true;
xSt.get_Range(excel.Cells[2,2],excel.Cells[2,2]).Font.Size = 22;
//
//设置报表表格为最适应宽度
//
xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Select();
xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Columns.AutoFit();
//
//设置整个报表的标题为跨列居中
//
xSt.get_Range(excel.Cells[2,2],excel.Cells[2,colIndex]).Select();
xSt.get_Range(excel.Cells[2,2],excel.Cells[2,colIndex]).HorizontalAlignment = XlHAlign.xlHAlignCenterAcrossSelection;
//
//绘制边框
//
xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Borders.LineStyle = 1;
xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,2]).Borders[XlBordersIndex.xlEdgeLeft].Weight = XlBorderWeight.xlThick;//设置左边线加粗
xSt.get_Range(excel.Cells[4,2],excel.Cells[4,colIndex]).Borders[XlBordersIndex.xlEdgeTop].Weight = XlBorderWeight.xlThick;//设置上边线加粗
xSt.get_Range(excel.Cells[4,colIndex],excel.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeRight].Weight = XlBorderWeight.xlThick;//设置右边线加粗
xSt.get_Range(excel.Cells[rowSum,2],excel.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeBottom].Weight = XlBorderWeight.xlThick;//设置下边线加粗
//
//显示效果
//
excel.Visible=true;
//xSt.Export(Server.MapPath(".")+""+this.xlfile.Text+".xls",SheetExportActionEnum.ssExportActionNone,Microsoft.Office.Interop.OWC.SheetExportFormat.ssExportHTML);
xBk.SaveCopyAs(Server.MapPath(".")+""+this.xlfile.Text+".xls");
ds = null;
xBk.Close(false, null,null);
excel.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(xBk);
System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);
System.Runtime.InteropServices.Marshal.ReleaseComObject(xSt);
xBk = null;
excel = null;
xSt = null;
GC.Collect();
string path = Server.MapPath(this.xlfile.Text+".xls");
System.IO.FileInfo file = new System.IO.FileInfo(path);
Response.Clear();
Response.Charset="GB2312";
Response.ContentEncoding=System.Text.Encoding.UTF8;
// 添加头信息,为"文件下载/另存为"对话框指定默认文件名
Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(file.Name));
// 添加头信息,指定文件大小,让浏览器能够显示下载进度
Response.AddHeader("Content-Length", file.Length.ToString());
// 指定返回的是一个不能被客户端读取的流,必须被下载
Response.ContentType = "application/ms-excel";
// 把文件流发送到客户端
Response.WriteFile(file.FullName);
// 停止页面的执行
Response.End();
}
上面的方面,均将要导出的excel数据,直接给浏览器输出文件流,下面的方法是首先将其存到服务器的某个文件夹中,然后把文件发送到客户端。这样可以持久的把导出的文件存起来,以便实现其它功能。
5、将excel文件导出到服务器上,再下载。
二、winForm中导出Excel的方法:
1、方法1:
SqlDataAdapter da=new SqlDataAdapter("select * from tb1",conn);
DataSet ds=new DataSet();
da.Fill(ds,"table1");
DataTable dt=ds.Tables["table1"];
string name=System.Configuration.ConfigurationSettings.AppSettings["downloadurl"].ToString()+DateTime.Today.ToString("yyyyMMdd")+new Random(DateTime.Now.Millisecond).Next(10000).ToString()+".csv";//存放到web.config中downloadurl指定的路径,文件格式为当前日期+4位随机数
FileStream fs=new FileStream(name,FileMode.Create,FileAccess.Write);
StreamWriter sw=new StreamWriter(fs,System.Text.Encoding.GetEncoding("gb2312"));
sw.WriteLine("自动编号,姓名,年龄");
foreach(DataRow dr in dt.Rows)
{
sw.WriteLine(dr["ID"]+","+dr["vName"]+","+dr["iAge"]);
}
sw.Close();
Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(name));
Response.ContentType = "application/ms-excel";// 指定返回的是一个不能被客户端读取的流,必须被下载
Response.WriteFile(name); // 把文件流发送到客户端
Response.End();
{
Excel.Application oExcel=new Excel.Application();
Workbooks oBooks;
Workbook oBook;
Sheets oSheets;
Worksheet oSheet;
Range oCells;
string sFile="",sTemplate="";
//
System.Data.DataTable dt=TableOut(sTableName).Tables[0];
sFile=url+"myExcel.xls";
sTemplate=url+"MyTemplate.xls";
//
oExcel.Visible=false;
oExcel.DisplayAlerts=false;
//定义一个新的工作簿
oBooks=oExcel.Workbooks;
oBooks.Open(sTemplate,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing, Type.Missing, Type.Missing);
oBook=oBooks.get_Item(1);
oSheets=oBook.Worksheets;
oSheet=(Worksheet)oSheets.get_Item(1);
//命名该sheet
oSheet.Name="Sheet1";
oCells=oSheet.Cells;
//调用dumpdata过程,将数据导入到Excel中去
DumpData(dt,oCells);
//保存
oSheet.SaveAs(sFile,Excel.XlFileFormat.xlTemplate,Type.Missing,Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlNoChange, Type.Missing, Type.Missing, Type.Missing);
oBook.Close(false, Type.Missing,Type.Missing);
//退出Excel,并且释放调用的COM资源
oExcel.Quit();
GC.Collect();
KillProcess("Excel");
}
private void KillProcess(string processName)
{
System.Diagnostics.Process myproc= new System.Diagnostics.Process();
//得到所有打开的进程
try
{
foreach (Process thisproc in Process.GetProcessesByName(processName))
{
if(!thisproc.CloseMainWindow())
{
thisproc.Kill();
}
}
}
catch(Exception Exc)
{
throw new Exception("",Exc);
}
}
2、方法2:
protected void ExportExcel()
{
gridbind();
if(ds1==null) return;
string saveFileName="";
// bool fileSaved=false;
SaveFileDialog saveDialog=new SaveFileDialog();
saveDialog.DefaultExt ="xls";
saveDialog.Filter="Excel文件|*.xls";
saveDialog.FileName ="Sheet1";
saveDialog.ShowDialog();
saveFileName=saveDialog.FileName;
if(saveFileName.IndexOf(":")<0) return; //被点了取消
// excelapp.Workbooks.Open (App.path & 工程进度表.xls)
Excel.Application xlApp=new Excel.Application();
object missing=System.Reflection.Missing.Value;
if(xlApp==null)
{
MessageBox.Show("无法创建Excel对象,可能您的机子未安装Excel");
return;
}
Excel.Workbooks workbooks=xlApp.Workbooks;
Excel.Workbook workbook=workbooks.Add(Excel.XlWBATemplate.xlWBATWorksheet);
Excel.Worksheet worksheet=(Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
Excel.Range range;
string oldCaption=Title_label .Text.Trim ();
long totalCount=ds1.Tables[0].Rows.Count;
long rowRead=0;
float percent=0;
worksheet.Cells[1,1]=Title_label .Text.Trim ();
//写入字段
for(int i=0;i<ds1.Tables[0].Columns.Count;i++)
{
worksheet.Cells[2,i+1]=ds1.Tables[0].Columns.ColumnName;
range=(Excel.Range)worksheet.Cells[2,i+1];
range.Interior.ColorIndex = 15;
range.Font.Bold = true;
}
//写入数值
Caption .Visible = true;
for(int r=0;r<ds1.Tables[0].Rows.Count;r++)
{
for(int i=0;i<ds1.Tables[0].Columns.Count;i++)
{
worksheet.Cells[r+3,i+1]=ds1.Tables[0].Rows[r];
}
rowRead++;
percent=((float)(100*rowRead))/totalCount;
this.Caption.Text= "正在导出数据["+ percent.ToString("0.00") +"%]...";
Application.DoEvents();
}
worksheet.SaveAs(saveFileName,missing,missing,missing,missing,missing,missing,missing,missing);
this.Caption.Visible= false;
this.Caption.Text= oldCaption;
range=worksheet.get_Range(worksheet.Cells[2,1],worksheet.Cells[ds1.Tables[0].Rows.Count+2,ds1.Tables[0].Columns.Count]);
range.BorderAround(Excel.XlLineStyle.xlContinuous,Excel.XlBorderWeight.xlThin,Excel.XlColorIndex.xlColorIndexAutomatic,null);
range.Borders[Excel.XlBordersIndex.xlInsideHorizontal].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;
range.Borders[Excel.XlBordersIndex.xlInsideHorizontal].LineStyle =Excel.XlLineStyle.xlContinuous;
range.Borders[Excel.XlBordersIndex.xlInsideHorizontal].Weight =Excel.XlBorderWeight.xlThin;
if(ds1.Tables[0].Columns.Count>1)
{
range.Borders[Excel.XlBordersIndex.xlInsideVertical].ColorIndex=Excel.XlColorIndex.xlColorIndexAutomatic;
}
workbook.Close(missing,missing,missing);
xlApp.Quit();
}
三、附注:
虽然都是实现导出excel的功能,但在asp.net和winform的程序中,实现的代码是各不相同的。在asp.net中,是在服务器端读取数据,在服务器端把数据以ms-excel的格式,以Response输出到浏览器(客户端);而在winform中,是把数据读到客户端(因为winform运行端就是客户端),然后调用客户端安装的office组件,将读到的数据写在excel
GridView导出Excel研究
Introduction:
将GridView中的数据导出为Excel是web应用中的常见功能。在不同的应用场景下有不同的导出技术。在本文中我将介绍一些导出的技术,希望对您有所帮助
GridView Export the Excel (Basic Code):
.
首先看一个基础的应用。创建一个表格,见截图
然后将数据库中的数据绑定到GridView中的数据,代码如下:
private void BindData() { SqlConnection myConnection = new SqlConnection("Server=localhost;Database=School;Trusted_Connection=true"); SqlDataAdapter ad = new SqlDataAdapter("SELECT * FROM Users", myConnection); DataSet ds = new DataSet(); ad.Fill(ds); gvUsers.DataSource = ds; gvUsers.DataBind(); } |
现在,GridView中已经绑定了数据,接下来的任务就是导出到Excel。下面是button事件中的代码
Response.ClearContent(); Response.AddHeader("content-disposition", "attachment; filename=MyExcelFile.xls"); Response.ContentType = "application/excel"; StringWriter sw = new StringWriter(); HtmlTextWriter htw = new HtmlTextWriter(sw); gvUsers.RenderControl(htw); Response.Write(sw.ToString()); Response.End(); |
并且还需要override一下VerifyRenderingInServerForm方法(这一点非常重要,否则在点击按钮后会报错,译者注),代码如下:
public override void VerifyRenderingInServerForm(Control control) { } |
点击导出按钮后会弹出对话框,询问您打开或保存。选择打开文件,导出到Excel的结果如下图:
Exporting GridView to Excel With Style:
您是否注意到了以上代码存在一些的问题?是的,ID列开头的0都被截去了。如果你的ID是000345,导出后就编程了345。这个问题可以通过把css添加到输出流中来解决。为了使ID列正确显示,您需要将其储存为文本格式。Excel中的文本格式表示为"mso-number-format:"\@"。
protected void Btn_ExportClick(object sender, EventArgs e) { string style = @"<style> .text { } </script> "; Response.ClearContent(); Response.AddHeader("content-disposition", "attachment; filename=MyExcelFile.xls"); Response.ContentType = "application/excel"; StringWriter sw = new StringWriter(); HtmlTextWriter htw = new HtmlTextWriter(sw); gvUsers.RenderControl(htw); // Style is added dynamically Response.Write(style); Response.Write(sw.ToString()); Response.End(); } public override void VerifyRenderingInServerForm(Control control) { } |
在上面的代码中,我通过”style”变量来控制GridView列的样式。并通过Respnose.Write方法将其添加到输出流中。最后把样式添加到ID列。这一步需要在RowDataBound事件中完成
protected void gvUsers_RowDataBound(object sender, GridViewRowEventArgs e) |
有个开源的控件 NPOI - 一个能帮助你直接读写office文件流的库 (QQ交流群: 124527967)
教程地址NPOI 1.2教程(目录) 。
部分介绍C#操作excel(NPOI篇) http://www.cnblogs.com/MR_ke/archive/2010/02/25/1673243.html
使用JavaScript复制表格进Excel
<script type="text/javascript">
function toExcel(tablename) //导出到excel
{
// var mysheet=new ActiveXObject("OWC.Spreadsheet");
// with(mysheet)
// {
// DataType = "HTMLData";
// HTMLData =tablename.outerHTML;
// try
// {
// ActiveSheet.Cells(1,1).value="";
// ActiveSheet.Cells(2,1).value="";
// // ActiveSheet.Cells(34,1).value="导出完毕";
// ActiveSheet.Export("导出.xls", 0);
// alert('导出完毕');
// };
// catch (e)
// {
// alert('导出Excel表失败,请确定已安装Excel2000(或更高版本),并且没打开同名xls文件');
// };
// }
var curTbl = document.getElementById(tablename);
var oXL = new ActiveXObject("Excel.Application");
var oWB = oXL.Workbooks.Add();
var oSheet = oWB.ActiveSheet;
var sel = document.body.createTextRange();
sel.moveToElementText(curTbl);
sel.select();
sel.execCommand("Copy");
oSheet.Paste();
oXL.Visible = true;
}
</script>
string toExcel = "javascript:toExcel('tbKPI');return false;";
btnExport.Attributes["onclick"] = toExcel;
注意信任级别
一.导入导出excel常用方法:
1.用查询表的方式查询并show在数据集控件上。
public static string strCon = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source =C:\\08.xls;Extended Properties=Excel 8.0";
public static DataSet ds;
protected void Page_Load(object sender, EventArgs e)
{
OleDbConnection conn = new OleDbConnection(strCon);
string sql = "select * from [Sheet1$]";
conn.Open();
OleDbDataAdapter myCommand = new OleDbDataAdapter(sql, strCon);
ds = new DataSet();
myCommand.Fill(ds, "[Sheet1$]");
conn.Close();
datagrid1.DataMember = "[Sheet1$]";
datagrid1.DataSource = ds;
datagrid1.DataBind();
//Excel.Application excel = new Excel.Application();
//excel.Application.Workbooks.Add(true);
//excel.Visible = true;
}
2.一个一个单元格的进行插入
1 string str = @"Data Source=IT-428E4EA4B0C7\SQLEXPRESS;Initial Catalog=TestBase;Integrated Security=True";
2 SqlConnection conn = new SqlConnection(str);
3 conn.Open();
4 int n = 0;
5 for (int i = 1; i < 20; i++)
6 {
7 if (n > 3)
8 break;
9 else
10 if (msheet.Cells.get_Range("A" + i, Type.Missing).Text.ToString() == "" && n <= 3)
11 { n++; }
12 else
13 {
14 //循环获取excel单元格的值一次一次的插入,excuteSql为执行的存储过程
15 excuteSql(msheet.Cells.get_Range("B" + i, Type.Missing).Text.ToString(),
16 msheet.Cells.get_Range("B" + (i + 1), Type.Missing).Text.ToString(),
17 msheet.Cells.get_Range("B" + (i + 2), Type.Missing).Text.ToString(),
18 conn);
19 i = i + 3;
20
21 }
22 }
23
24 conn.Close();
二快速导入导出
1.我们都知道当向db里批量插入数据的时候我们会选择SqlBulkCopy
if (dataTable!=null && dataTable.Rows.Count!=0)
{
sqlBulkCopy.WriteToServer(dataTable);
}
这个可以看 深山老林新发的一篇SQLServer中批量插入数据方式的性能对比下面是SqlBulkCopy的方法,这个方法有一个弊端就是当excel某一列即有文字,还有日期的时候,会出现null值,我在网上查了一些资料说连接字串加上;HDR=YES;IMEX=1'的时候会都当做字符处理,但是还是会出现一些bug,所以建议最好先把excel数据分析到datatable里然后再用SqlBulkCopy倒入数据库
1 // block copy to DB from Excel
2 //By xijun,
3 //step 1 create an excel file C:\Inetpub\wwwroot\test.xls , fill cell(1,1) with "Data",cell(1,2) with "name"
4 //step 2 create table named "Data" with 2 column ("data","name") in your DB
5 //there the code below:
6 DateTime t1 = DateTime.Now;
7 Response.Write("<br>start time:" + t1.ToString());
8 string ExcelFile = @"C:\\20090916_Hub_Report.xls";
9 string excelConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFile + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1'";
10
11 using (OleDbConnection excelConnection = new OleDbConnection(excelConnectionString))
12 {
13
14 excelConnection.Open();
15 //Getting source data
16 //非空讀入數據
17 OleDbCommand command = new OleDbCommand("Select [Region],[CustomerPN],[RMA],[Date],[QTY],[Return/Pull] FROM [20090916_Hub_Report$] ", excelConnection);
18 // Initialize SqlBulkCopy object
19
20 using (OleDbDataReader dr = command.ExecuteReader())
21 {
22 // Copy data to destination
23 string sqlConnectionString = @"Data Source=MININT-G87PHNA\SQLEXPRESS;Initial Catalog=GDS_Service;Integrated Security=True";
24 using (SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConnectionString))
25 {
26 bulkCopy.DestinationTableName = "GDS_Hub_data";
27 //加入只加入一個列的話,那么就會其他數據庫列都默認為空。
28 bulkCopy.ColumnMappings.Add("Region", "region");
29 bulkCopy.ColumnMappings.Add("CustomerPN", "customer_item_number");
30 bulkCopy.ColumnMappings.Add("RMA", "Rma");
31 bulkCopy.ColumnMappings.Add("Date", "date");
32 bulkCopy.ColumnMappings.Add("QTY", "Qty_1");
33 bulkCopy.ColumnMappings.Add("Return/Pull", "return_pull");
34 //bcp.BatchSize = 100;//每次传输的行数
35 //bcp.NotifyAfter = 100;//进度提示的行数
36 bulkCopy.BatchSize = 100;
37 bulkCopy.NotifyAfter = 100;
38 bulkCopy.WriteToServer((IDataReader)dr);
39
40
41 }
42 }
43 //Closing connection
44 excelConnection.Close();
45 }
46
47 DateTime t2 = DateTime.Now;
48 Response.Write("<br>End time:" + t2.ToString());
49 Response.Write("<br>use time:" + ((TimeSpan)(t2 - t1)).Milliseconds.ToString() + " Milliseconds");
50 Response.Write("<br>inser record count :3307");
2.快速导出db的数据到excel
这种方法就是利用
Excel.QueryTables
Excel.QueryTable
Querytable把数据快速导入excel里。我们在做复杂报表的时候,这个用的是比较多了,但是单单会这个没有用,它只是快速的把db里的数据放放到excel里,
在做大量数据而且需要设定excel样式的时候我们会选择先用这种方法把数据导入excel一个临时sheet,再利sheet复制,sheet移动,和一些excel样式设定,以及
excel一个强大的自动填充的功能,那么这些就可以让我们快速的做出花样多试的excel报表,当然这个要求我们比较熟练office的操作,包括宏的操作。
1 public string query_table_getdata(string sourpath)
2 {
3 string str_path = sourpath.Substring(0, sourpath.Length - 22);
4 str_path = str_path + "basic.xls";
5
6 Excel.QueryTables m_objQryTables = null;
7 Excel.QueryTable m_objQryTable = null;
8 Excel.Application m_objExcel = null;
9 Excel.Workbooks m_objBooks = null;
10 Excel.Workbook m_objBook = null;
11 Excel.Sheets m_objSheets = null;
12 Excel.Worksheet m_objSheet = null;
13 Excel.Range m_objRange = null;
14 m_objExcel = new Excel.Application();
15
16 //try
17 //{
18 m_objBooks = m_objExcel.Workbooks;
19 m_objBooks.Open(sourpath, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
20 Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
21
22 m_objBook = (Excel.Workbook)m_objBooks.get_Item(1);
23
24
25 m_objSheets = (Excel.Sheets)m_objBook.Worksheets;
26 m_objSheet = (Excel.Worksheet)m_objSheets.get_Item(1);
27 m_objRange = m_objSheet.get_Range("A2", Type.Missing);
28 m_objQryTables = m_objSheet.QueryTables;
29 string sqlstr = "SELECT [day01],[day02],[day03],[day04],[day05],[day06],[day07],[day08],[day09],[day10],[day11],[day12],[day13],[day14]";
30 sqlstr += ",[week01] ,[week02],[week03],[week04],[week05],[week06],[week07],[week08],[week09],[week10],[week11],[week12],[week13],[week14]";
31 sqlstr += ",[week15],[week16],[week17],[week18],[week19],[week20],[week21],[week22],[week23],[week24]";
32 sqlstr += " FROM [GDS_Service].[dbo].[GDS_Service_Report_Base] order by groupID ,id";
33 //可以放在配置文件里
34 string conn = @"Provider=SQLOLEDB.1;Data Source=MININT-G87PHNA\SQLEXPRESS;uid=xijun_ke;Password=12345678;Initial Catalog=GDS_Service;Persist Security Info=False;";
35
36 m_objQryTable = (Excel.QueryTable)m_objQryTables.Add("OLEDB;" + conn, m_objRange, sqlstr);
37
38 m_objQryTable.RefreshStyle = Excel.XlCellInsertionMode.xlInsertEntireRows;
39
40 m_objQryTable.Refresh(false);
41 m_objBook.SaveAs(str_path, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
42 m_objBook.Close(false, Type.Missing, Type.Missing);
43 //}
44 //catch (Exception ee)
45 //{
46 // mp.WriteLog(ee.ToString());
47 //}
48 //finally
49 //{
50 m_objExcel.Quit();
51 GC.Collect();
52 //}
53 return str_path;
54
55 }
com操作excel的一些特性操作:
range.NumberFormatLocal = "@"; //设置单元格格式为文本
range = (Range)worksheet.get_Range("A1", "E1"); //获取Excel多个单元格区域:本例做为Excel表头
range.Merge(0); //单元格合并动作
worksheet.Cells[1, 1] = "Excel单元格赋值"; //Excel单元格赋值
range.Font.Size = 15; //设置字体大小
range.Font.Underline=true; //设置字体是否有下划线
range.Font.Name="黑体"; 设置字体的种类
range.HorizontalAlignment=XlHAlign.xlHAlignCenter; //设置字体在单元格内的对其方式
range.ColumnWidth=15; //设置单元格的宽度
range.Cells.Interior.Color=System.Drawing.Color.FromArgb(255,204,153).ToArgb(); //设置单元格的背景色
range.Borders.LineStyle=1; //设置单元格边框的粗细
range.BorderAround(XlLineStyle.xlContinuous,XlBorderWeight.xlThick,XlColorIndex.xlColorIndexAutomatic,System.Drawing.Color.Black.ToArgb()); //给单元格加边框
range.EntireColumn.AutoFit(); //自动调整列宽
Range.HorizontalAlignment= xlCenter; // 文本水平居中方式
Range.VerticalAlignment= xlCenter //文本垂直居中方式
Range.WrapText=true; //文本自动换行
Range.Interior.ColorIndex=39; //填充颜色为淡紫色
Range.Font.Color=clBlue; //字体颜色
xlsApp.DisplayAlerts=false; //保存Excel的时候,不弹出是否保存的窗口直接进行保存
workbook.SaveCopyAs(temp);/**////填入完信息之后另存到路径及文件名字
excel宏操作,sheet和单元格操作:
1 /// <summary>
2 /// 讀取excel數據和插入公式
3 /// </summary>
4 /// <param name="sender"></param>
5 /// <param name="e"></param>
6 protected void Button2_Click(object sender, EventArgs e)
7 {
8 DateTime t1 = DateTime.Now;
9 Response.Write("<br>start time:" + t1.ToString());
10 Excel.Application excelkk = new Excel.Application();
11
12 excelkk.Workbooks.Add(true);
13 int row = 2;
14 DataTable myTable = ds.Tables["[Sheet1$]"];
15 for (int i = 0; i < myTable.Columns.Count; i++)
16 {
17 excelkk.Cells[1, 1 + i] = myTable.Columns[i].ColumnName.ToString();
18 }
19 for (int i = 0; i < myTable.Rows.Count; i++)
20 {
21 for (int j = 0; j < myTable.Columns.Count; j++)
22 {
23 excelkk.Cells[row, j + 1] = myTable.Rows[i][j].ToString();
24 }
25
26 row++;
27 }
28
29
30 //取得特定單元格的值
31 excelkk.Visible = true;
32 this.TextBoxChange.Text = excelkk.get_Range("A2", Type.Missing).Text.ToString();
33 //表的單元格合并
34 Excel.Range range1 = excelkk.get_Range("A2", "D4");
35 range1.Merge(Type.Missing);
36
37
38
39
40 //想表格中插入求和的值
41 Excel.Range range2 = excelkk.get_Range("B25", Type.Missing);
42 range2.Formula = "=SUM(B2:B24)";
43 range2.Calculate();
44
45 //進行宏的循環應用與單元格的刪除和添加,多個單元格默認宏自動操作。
46 Excel.Range range3 = excelkk.get_Range("B25","E25");
47 range2.AutoFill(range3,Excel.XlAutoFillType.xlFillDefault);
48 //刪除表的指定行數操作
49 Excel.Range range7 = null;
50 range7 = excelkk.get_Range(excelkk.Cells[2, 2], excelkk.Cells[4, 4]);
51 range7.Select();
52 range7.EntireRow.Delete(Excel.XlDirection.xlUp);
53
54 //獲取最大用過的行數
55 Excel.Worksheet wsheet1 = (Excel.Worksheet)excelkk.Worksheets.get_Item(1);
56 int n =wsheet1.UsedRange.Cells.Columns.Count;
57 Response.Write(n.ToString() + "<br>");
58 //MessageBox.Show(n.ToString());
59 n = wsheet1.UsedRange.Cells.Rows.Count;
60 Response.Write(n.ToString() + "<br>");
61 //MessageBox.Show(n.ToString());
62 //數據的複製
63 Excel.Range range4 = excelkk.get_Range("A2", "B25");
64 Excel.Range range5 = excelkk.get_Range("E3", "F25");
65 //range4.get_Offset(1,4).Select();
66 range4.Copy(range5);
67 //停用警告信息
68 excelkk.DisplayAlerts = false;
69 GC.Collect();
70
71 }
72
73
74 單個sheet里求和:
75 Excel.Range range2 = excelkk.get_Range("B25", Type.Missing);
76 range2.Formula = "=SUM(B2:B24)";
77 range2.Calculate();
78
79 跨sheet求和:
80 Excel.Worksheet wsheet1 = (Excel.Worksheet)excelSql.Worksheets.get_Item(1);
81 Excel.Range range3 =wsheet1.get_Range("A23", Type.Missing);
82 range3.Formula = "=Sheet3!B8+Sheet3!B12";
83 range3.Calculate();
84
虽然我们拥有强大的NPOI,不过我还是写出来,希望对大家理解office有一定的用处。
在ASP.NET中使用Excel类读取Excel文件数据时,会碰到一些奇怪问题,例如“无法读取”等,一般是由于ASP.NET帐户没有操作Excel的权限等原因造成的。解决方法如下:
运行dcomcnfg(DCOM Config), 在列表中选择Microsoft Excel应用程序,查看属性,身份验证级别选"无",身份标识选"交互式用户",安全性页面,启动和访问均给everyone。(选择安全性选项,编辑可以启动应用程序的用户和更改应用程序配置的用户,在用户中添加ASP.NEt帐户。然后重新启动计算机)(必须,否则仍然无法使用Excel类)。
做如上配置以后,即可以使用如下方法把Excel中的数据读取到一个DataSet中:
public static DataSet ReadExcel2DataSet(string filePath)
{
//新建Excel应用程序对象,用于操作Excel
Excel.Application app = new Excel.ApplicationClass();
try
{
//打开Excel文件
app.Workbooks.Open (filePath,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,
Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value);
DataSet ds = new DataSet();
for(int i=1; i<=app.Worksheets.Count; i++)
{
Excel.Worksheet worksheet = app.Worksheets[i] as Excel.Worksheet;
Excel.Range rngUsed = worksheet.UsedRange;
DataTable dt = new DataTable();
ds.Tables.Add(dt);
for(int j=0; j<rngUsed.Columns.Count; j++)
{
dt.Columns.Add();
}
object[,] table = ((Excel.Range)rngUsed.Rows).Value2 as object[,];
if(table == null)
{
continue;
}
for(int m=1; m<=table.GetLength(0); m++)
{
DataRow dr = dt.NewRow();
dt.Rows.Add(dr);
for(int n=1; n<=dt.Columns.Count; n++)
{
dr[n-1] = table.GetValue(m,n);
}
}
}
app.Workbooks[1].Close(Missing.Value,Missing.Value,Missing.Value);
return ds;
}
catch
{
throw;
}
finally
{
app.Quit();
}
}
本文来自CSDN博客,转载请标明出处:http://blog.csdn.net/gentle_wolf/archive/2008/11/27/3394452.aspx