首先下载org.in2bits.MyXls.dll(自己的在~\About ASP.Net\Asp.Net操作excel)
添加命名空间：
using org.in2bits.MyXls;
using System.IO;
思路：
添加引用 (using org.in2bits.MyXls)→
创建空xls文档(XlsDocument) →
得到数据 →
创建一个工作页(Worksheet) →
设置xls文档的指定工作页的行(RowInfo) →
设置xls文档的指定工作页的列(ColumnInfo) →
创建列样式创建列时引用(XF) →
列位置排好 →
增加数据(ws.Cells.Add)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using org.in2bits.MyXls;
using System.Web;
using System.IO;
namespace LowProtetction.Bizlogic
{
public class DB_CommunityInfo
{
/// <summary>
/// 自定义导出
/// </summary>
/// <param name="Condition">查询条件</param>
public static void DaoChuExecl( string therCondtion)
{
string filename = "自定义导出";
DataView dv = null;
XlsDocument doc = new XlsDocument(); //创建空xls文档
string strSql = "select BelongCity,CommunityCode,CommunityName,CommunityAddress,Remark,AddUserName from CommunityInfo where 1=1 " + therCondtion + "";
dv = Epoint.MisBizLogic2.DB.ExecuteDataView(strSql);
ExcelExport(filename,dv.ToTable(), doc, 2, 1);
doc.FileName = HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8);
doc.Send();
}
private static void ExcelExport(string workSheetName, DataTable dt, XlsDocument xls, int startrow, int displaynum)
{
//创建一个工作页为Dome
Worksheet ws = xls.Workbook.Worksheets.Add(workSheetName);
#region 设置xls文档的指定工作页的行属性
RowInfo rol1top1 = new RowInfo();
rol1top1.RowHeight = 50 * 20;
rol1top1.RowIndexStart = 0;
rol1top1.RowIndexEnd = 1;
ws.AddRowInfo(rol1top1);
RowInfo rol1top2 = new RowInfo();
rol1top2.RowHeight = 24 * 20;
rol1top2.RowIndexStart = 2;
rol1top2.RowIndexEnd = (ushort)(dt.Rows.Count + 5); //到最后一行
ws.AddRowInfo(rol1top2);
#endregion
#region 设置xls文档的指定工作页的列属性
//所属城市 1
ColumnInfo colInfo0 = new ColumnInfo(xls, ws);
colInfo0.ColumnIndexStart = 0;
colInfo0.ColumnIndexEnd = 1;
colInfo0.Width = 15 * 256;
ws.AddColumnInfo(colInfo0);
//社区编号
ColumnInfo colInfo1 = new ColumnInfo(xls, ws);
colInfo1.ColumnIndexStart = 1;
colInfo1.ColumnIndexEnd = 2;
colInfo1.Width = 15 * 256;
ws.AddColumnInfo(colInfo1);
//名称
ColumnInfo colInfo12 = new ColumnInfo(xls, ws);
colInfo12.ColumnIndexStart = 2;
colInfo12.ColumnIndexEnd = 3;
colInfo12.Width = 15 * 256;
ws.AddColumnInfo(colInfo12);
//社区地址
ColumnInfo colInfo2 = new ColumnInfo(xls, ws);
colInfo2.ColumnIndexStart = 3;
colInfo2.ColumnIndexEnd = 4;
colInfo2.Width = 15 * 256;
ws.AddColumnInfo(colInfo2);
// 社区介绍
ColumnInfo colInfo3 = new ColumnInfo(xls, ws);
colInfo3.ColumnIndexStart = 4;
colInfo3.ColumnIndexEnd = 5;
colInfo3.Width = 15 * 256;
ws.AddColumnInfo(colInfo3);
//登记人
ColumnInfo colInfo6 = new ColumnInfo(xls, ws);
colInfo6.ColumnIndexStart = 5;
colInfo6.ColumnIndexEnd = 7;
colInfo6.Width = 15 * 256;
ws.AddColumnInfo(colInfo6);
#endregion
#region 创建列样式创建列时引用
XF xfhead = xls.NewXF();
xfhead.HorizontalAlignment = HorizontalAlignments.Centered;
xfhead.VerticalAlignment = VerticalAlignments.Centered;
xfhead.Font.Bold = false;
xfhead.Font.FontName = "宋体";
xfhead.Font.Height = 16 * 20;
//自动换行
xfhead.TextWrapRight = true;
#endregion
#region Excel导出的头
//Worksheet,单元格样式，列名，开始行，开始列，结束行，结束列
MergeRegion(ref ws, xfhead, "自定义导出", 1, 1, 1, dt.Columns.Count);
#endregion
#region 创建单元格样式
//第一种单元格样式
XF xf = xls.NewXF();
xf.HorizontalAlignment = HorizontalAlignments.Centered;
xf.VerticalAlignment = VerticalAlignments.Centered;
xf.Pattern = 1;////设定单元格填充风格。如果设定为0，则是纯色填充
xf.PatternColor = Colors.White;//设定填充线条的颜色
xf.UseBorder = true;
//设置列的上下左右的样式
xf.TopLineStyle = 1;
xf.TopLineColor = Colors.Black;
xf.BottomLineStyle = 1;
xf.BottomLineColor = Colors.Black;
xf.LeftLineStyle = 1;
xf.LeftLineColor = Colors.Black;
xf.RightLineStyle = 1;
xf.RightLineColor = Colors.Black;
xf.Font.Bold = true;
xf.Font.FontName = "仿宋";
xf.Font.Height = 12 * 20;
//自动换行
xf.TextWrapRight = true;
#endregion
#region 列位置排好
int ViewStatestartrow = startrow;
//Worksheet,单元格样式，列名，开始行，开始列，结束行，结束列
MergeRegion(ref ws, xf, "所属城市", ViewStatestartrow, 1, ViewStatestartrow, 1);
MergeRegion(ref ws, xf, "社区编号", ViewStatestartrow, 2, ViewStatestartrow, 2);
MergeRegion(ref ws, xf, "社区名称", ViewStatestartrow, 3, ViewStatestartrow, 3);
MergeRegion(ref ws, xf, "社区地址", ViewStatestartrow, 4, ViewStatestartrow, 4);
MergeRegion(ref ws, xf, "社区介绍", ViewStatestartrow, 5, ViewStatestartrow, 5);
MergeRegion(ref ws, xf, "登记人", ViewStatestartrow, 6, ViewStatestartrow, 6);
#endregion
//第二种单元格样式
XF xf1 = xls.NewXF();
xf1 = xf;
xf1.Font.Bold = false;
xf1.Font.FontName = "仿宋_GB2312";
xf1.Font.Height = 10 * 20;
int ViewStateEndrow = int.Parse(ViewStatestartrow.ToString());
int dtcolcount = dt.Columns.Count;
//循环数据表 逐行添加数据
//ViewStatestartrow 为开始行
for (int i = 0; i < dt.Rows.Count; i++)
{
int StatRow = i + ViewStatestartrow + 1;
for (int k = 0; k < dt.Columns.Count; k++)
{
//行，列，列值，单元格
ws.Cells.Add(StatRow, k + 1, dt.Rows[i][k].ToString(), xf1);//给单元格赋值：
}
ViewStateEndrow = StatRow;
}
}
/// <summary>
/// 格式设置 合并
/// </summary>
/// <param name="ws">Worksheet </param>
/// <param name="xf"> </param>
/// <param name="title"> 列名</param>
/// <param name="startRow">开始行</param>
/// <param name="startCol">开始列</param>
/// <param name="endRow">结束行</param>
/// <param name="endCol">结束列</param>
public static void MergeRegion(ref Worksheet ws, XF xf, string title, int startRow, int startCol, int endRow, int endCol)
{
for (int i = startCol; i <= endCol; i++)
{
for (int j = startRow; j <= endRow; j++)
{
//行，列，列值，单元格
ws.Cells.Add(j, i, title, xf);
}
}
ws.Cells.Merge(startRow, endRow, startCol, endCol);
}
}
}
还有一个重要的一点就是，弹出下载页面的时候你电脑要刷屏，这样是消失不见，而你加了UpdatePanel的话也会刷掉
重点来了
//通过此方法，我们可以把某个位于UpdatePanel中的控件，改为不触发异步Postback，而是触发传统的Postback事件
//不然会把下载框刷新调
((ScriptManager)Master.FindControl("ScriptManager1")).RegisterPostBackControl(btnExport);
时间： 2024-12-19 14:34:09