-
ASP.NET导入EXCEL方法汇总
- 1、由dataset生成
- public void CreateExcel(DataSet ds,string typeid,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="";
- int i=0;
- //定义表对象与行对像,同时用DataSet对其值进行初始化
- DataTable dt=ds.Tables[0];
- DataRow[] myRow=dt.Select("");
- // typeid=="1"时导出为EXCEL格式文件;typeid=="2"时导出为XML格式文件
- if(typeid=="1")
- {
- //取得数据表各列标题,各标题之间以 分割,最后一个列标题后加回车符
- for(i=0;i colHeaders+=dt.Columns[i].Caption.ToString()+" ";
- colHeaders +=dt.Columns[i].Caption.ToString() +"
";
- //向HTTP输出流中写入取得的数据信息
- resp.Write(colHeaders);
- //逐行处理数据
- foreach(DataRow row in myRow)
- {
- //在当前行中,逐列获得数据,数据之间以 分割,结束时加回车符
- for(i=0;i ls_item +=row[i].ToString() + " ";
- ls_item += row[i].ToString() +"
";
- //当前行数据写入HTTP输出流,并且置空ls_item以便下行数据
- resp.Write(ls_item);
- ls_item="";
- }
- }
- else
- {
- if(typeid=="2")
- {
- //从DataSet中直接导出XML数据并且写到HTTP输出流中
- resp.Write(ds.GetXml());
- }
- }
- //写缓冲区中的数据到HTTP头文件中
- resp.End();
- }
- 2、由datagrid生成
- public void ToExcel(System.Web.UI.Control ctl)
- {
- 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";//image/JPEG;text/HTML;image/GIF;vnd.msexcel/
- msword
- 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:ToExcel(datagrid1);
- 3、这个用dataview
- public void OutputExcel(DataView dv,string str)
- {
- //
- // TODO: 在此处添加构造函数逻辑
- //
- //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(".")
- +"file://"+this.xlfile.Text+".xls",SheetExportActionEnum.ssExportActionNone,Microsoft.Office.Interop.OWC.SheetExportForma
- t.ssExportHTML/);
- xBk.SaveCopyAs(Server.MapPath(".")+"file://"+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();
- }
-
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原文地址:https://www.cnblogs.com/ranran/p/3897118.html
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