C＃自定义导出数据到Excel中的类封装
using System;
using System.IO;
using System.Data;
using System.Collections;
using System.Data.OleDb;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls; namespace DotNet.Utilities
{
/// <summary>
/// Excel操作类
/// </summary>
/// Microsoft Excel 11.0 Object Library
public class ExcelHelper
{
#region 数据导出至Excel文件
/// </summary>
/// 导出Excel文件，自动返回可下载的文件流
/// </summary>
public static void DataTable1Excel(System.Data.DataTable dtData)
{
GridView gvExport = null;
HttpContext curContext = HttpContext.Current;
StringWriter strWriter = null;
HtmlTextWriter htmlWriter = null;
if (dtData != null)
{
curContext.Response.ContentType = "application/vnd.ms-excel";
curContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
curContext.Response.Charset = "utf-8";
strWriter = new StringWriter();
htmlWriter = new HtmlTextWriter(strWriter);
gvExport = new GridView();
gvExport.DataSource = dtData.DefaultView;
gvExport.AllowPaging = false;
gvExport.DataBind();
gvExport.RenderControl(htmlWriter);
curContext.Response.Write("<meta http-equiv=\"Content-Type\" content=\"text/html;charset=gb2312\"/>" + strWriter.ToString());
curContext.Response.End();
}
} /// <summary>
/// 导出Excel文件，转换为可读模式
/// </summary>
public static void DataTable2Excel(System.Data.DataTable dtData)
{
DataGrid dgExport = null;
HttpContext curContext = HttpContext.Current;
StringWriter strWriter = null;
HtmlTextWriter htmlWriter = null; if (dtData != null)
{
curContext.Response.ContentType = "application/vnd.ms-excel";
curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;
curContext.Response.Charset = "";
strWriter = new StringWriter();
htmlWriter = new HtmlTextWriter(strWriter);
dgExport = new DataGrid();
dgExport.DataSource = dtData.DefaultView;
dgExport.AllowPaging = false;
dgExport.DataBind();
dgExport.RenderControl(htmlWriter);
curContext.Response.Write(strWriter.ToString());
curContext.Response.End();
}
} /// <summary>
/// 导出Excel文件，并自定义文件名
/// </summary>
public static void DataTable3Excel(System.Data.DataTable dtData, String FileName)
{
GridView dgExport = null;
HttpContext curContext = HttpContext.Current;
StringWriter strWriter = null;
HtmlTextWriter htmlWriter = null; if (dtData != null)
{
HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8);
curContext.Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls");
curContext.Response.ContentType = "application nd.ms-excel";
curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;
curContext.Response.Charset = "GB2312";
strWriter = new StringWriter();
htmlWriter = new HtmlTextWriter(strWriter);
dgExport = new GridView();
dgExport.DataSource = dtData.DefaultView;
dgExport.AllowPaging = false;
dgExport.DataBind();
dgExport.RenderControl(htmlWriter);
curContext.Response.Write(strWriter.ToString());
curContext.Response.End();
}
} /// <summary>
/// 将数据导出至Excel文件
/// </summary>
/// <param name="Table">DataTable对象</param>
/// <param name="ExcelFilePath">Excel文件路径</param>
public static bool OutputToExcel(DataTable Table, string ExcelFilePath)
{
if (File.Exists(ExcelFilePath))
{
throw new Exception("该文件已经存在！");
} if ((Table.TableName.Trim().Length == 0) || (Table.TableName.ToLower() == "table"))
{
Table.TableName = "Sheet1";
} //数据表的列数
int ColCount = Table.Columns.Count; //用于记数，实例化参数时的序号
int i = 0; //创建参数
OleDbParameter[] para = new OleDbParameter[ColCount]; //创建表结构的SQL语句
string TableStructStr = @"Create Table " + Table.TableName + "("; //连接字符串
string connString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0;";
OleDbConnection objConn = new OleDbConnection(connString); //创建表结构
OleDbCommand objCmd = new OleDbCommand(); //数据类型集合
ArrayList DataTypeList = new ArrayList();
DataTypeList.Add("System.Decimal");
DataTypeList.Add("System.Double");
DataTypeList.Add("System.Int16");
DataTypeList.Add("System.Int32");
DataTypeList.Add("System.Int64");
DataTypeList.Add("System.Single"); //遍历数据表的所有列，用于创建表结构
foreach (DataColumn col in Table.Columns)
{
//如果列属于数字列，则设置该列的数据类型为double
if (DataTypeList.IndexOf(col.DataType.ToString()) >= 0)
{
para[i] = new OleDbParameter("@" + col.ColumnName, OleDbType.Double);
objCmd.Parameters.Add(para[i]); //如果是最后一列
if (i + 1 == ColCount)
{
TableStructStr += col.ColumnName + " double)";
}
else
{
TableStructStr += col.ColumnName + " double,";
}
}
else
{
para[i] = new OleDbParameter("@" + col.ColumnName, OleDbType.VarChar);
objCmd.Parameters.Add(para[i]); //如果是最后一列
if (i + 1 == ColCount)
{
TableStructStr += col.ColumnName + " varchar)";
}
else
{
TableStructStr += col.ColumnName + " varchar,";
}
}
i++;
} //创建Excel文件及文件结构
try
{
objCmd.Connection = objConn;
objCmd.CommandText = TableStructStr; if (objConn.State == ConnectionState.Closed)
{
objConn.Open();
}
objCmd.ExecuteNonQuery();
}
catch (Exception exp)
{
throw exp;
} //插入记录的SQL语句
string InsertSql_1 = "Insert into " + Table.TableName + " (";
string InsertSql_2 = " Values (";
string InsertSql = ""; //遍历所有列，用于插入记录，在此创建插入记录的SQL语句
for (int colID = 0; colID < ColCount; colID++)
{
if (colID + 1 == ColCount) //最后一列
{
InsertSql_1 += Table.Columns[colID].ColumnName + ")";
InsertSql_2 += "@" + Table.Columns[colID].ColumnName + ")";
}
else
{
InsertSql_1 += Table.Columns[colID].ColumnName + ",";
InsertSql_2 += "@" + Table.Columns[colID].ColumnName + ",";
}
} InsertSql = InsertSql_1 + InsertSql_2; //遍历数据表的所有数据行
for (int rowID = 0; rowID < Table.Rows.Count; rowID++)
{
for (int colID = 0; colID < ColCount; colID++)
{
if (para[colID].DbType == DbType.Double && Table.Rows[rowID][colID].ToString().Trim() == "")
{
para[colID].Value = 0;
}
else
{
para[colID].Value = Table.Rows[rowID][colID].ToString().Trim();
}
}
try
{
objCmd.CommandText = InsertSql;
objCmd.ExecuteNonQuery();
}
catch (Exception exp)
{
string str = exp.Message;
}
}
try
{
if (objConn.State == ConnectionState.Open)
{
objConn.Close();
}
}
catch (Exception exp)
{
throw exp;
}
return true;
} /// <summary>
/// 将数据导出至Excel文件
/// </summary>
/// <param name="Table">DataTable对象</param>
/// <param name="Columns">要导出的数据列集合</param>
/// <param name="ExcelFilePath">Excel文件路径</param>
public static bool OutputToExcel(DataTable Table, ArrayList Columns, string ExcelFilePath)
{
if (File.Exists(ExcelFilePath))
{
throw new Exception("该文件已经存在！");
} //如果数据列数大于表的列数，取数据表的所有列
if (Columns.Count > Table.Columns.Count)
{
for (int s = Table.Columns.Count + 1; s <= Columns.Count; s++)
{
Columns.RemoveAt(s); //移除数据表列数后的所有列
}
} //遍历所有的数据列，如果有数据列的数据类型不是 DataColumn，则将它移除
DataColumn column = new DataColumn();
for (int j = 0; j < Columns.Count; j++)
{
try
{
column = (DataColumn)Columns[j];
}
catch (Exception)
{
Columns.RemoveAt(j);
}
}
if ((Table.TableName.Trim().Length == 0) || (Table.TableName.ToLower() == "table"))
{
Table.TableName = "Sheet1";
} //数据表的列数
int ColCount = Columns.Count; //创建参数
OleDbParameter[] para = new OleDbParameter[ColCount]; //创建表结构的SQL语句
string TableStructStr = @"Create Table " + Table.TableName + "("; //连接字符串
string connString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0;";
OleDbConnection objConn = new OleDbConnection(connString); //创建表结构
OleDbCommand objCmd = new OleDbCommand(); //数据类型集合
ArrayList DataTypeList = new ArrayList();
DataTypeList.Add("System.Decimal");
DataTypeList.Add("System.Double");
DataTypeList.Add("System.Int16");
DataTypeList.Add("System.Int32");
DataTypeList.Add("System.Int64");
DataTypeList.Add("System.Single"); DataColumn col = new DataColumn(); //遍历数据表的所有列，用于创建表结构
for (int k = 0; k < ColCount; k++)
{
col = (DataColumn)Columns[k]; //列的数据类型是数字型
if (DataTypeList.IndexOf(col.DataType.ToString().Trim()) >= 0)
{
para[k] = new OleDbParameter("@" + col.Caption.Trim(), OleDbType.Double);
objCmd.Parameters.Add(para[k]); //如果是最后一列
if (k + 1 == ColCount)
{
TableStructStr += col.Caption.Trim() + " Double)";
}
else
{
TableStructStr += col.Caption.Trim() + " Double,";
}
}
else
{
para[k] = new OleDbParameter("@" + col.Caption.Trim(), OleDbType.VarChar);
objCmd.Parameters.Add(para[k]); //如果是最后一列
if (k + 1 == ColCount)
{
TableStructStr += col.Caption.Trim() + " VarChar)";
}
else
{
TableStructStr += col.Caption.Trim() + " VarChar,";
}
}
} //创建Excel文件及文件结构
try
{
objCmd.Connection = objConn;
objCmd.CommandText = TableStructStr; if (objConn.State == ConnectionState.Closed)
{
objConn.Open();
}
objCmd.ExecuteNonQuery();
}
catch (Exception exp)
{
throw exp;
} //插入记录的SQL语句
string InsertSql_1 = "Insert into " + Table.TableName + " (";
string InsertSql_2 = " Values (";
string InsertSql = ""; //遍历所有列，用于插入记录，在此创建插入记录的SQL语句
for (int colID = 0; colID < ColCount; colID++)
{
if (colID + 1 == ColCount) //最后一列
{
InsertSql_1 += Columns[colID].ToString().Trim() + ")";
InsertSql_2 += "@" + Columns[colID].ToString().Trim() + ")";
}
else
{
InsertSql_1 += Columns[colID].ToString().Trim() + ",";
InsertSql_2 += "@" + Columns[colID].ToString().Trim() + ",";
}
} InsertSql = InsertSql_1 + InsertSql_2; //遍历数据表的所有数据行
DataColumn DataCol = new DataColumn();
for (int rowID = 0; rowID < Table.Rows.Count; rowID++)
{
for (int colID = 0; colID < ColCount; colID++)
{
//因为列不连续，所以在取得单元格时不能用行列编号，列需得用列的名称
DataCol = (DataColumn)Columns[colID];
if (para[colID].DbType == DbType.Double && Table.Rows[rowID][DataCol.Caption].ToString().Trim() == "")
{
para[colID].Value = 0;
}
else
{
para[colID].Value = Table.Rows[rowID][DataCol.Caption].ToString().Trim();
}
}
try
{
objCmd.CommandText = InsertSql;
objCmd.ExecuteNonQuery();
}
catch (Exception exp)
{
string str = exp.Message;
}
}
try
{
if (objConn.State == ConnectionState.Open)
{
objConn.Close();
}
}
catch (Exception exp)
{
throw exp;
}
return true;
}
#endregion /// <summary>
/// 获取Excel文件数据表列表
/// </summary>
public static ArrayList GetExcelTables(string ExcelFileName)
{
DataTable dt = new DataTable();
ArrayList TablesList = new ArrayList();
if (File.Exists(ExcelFileName))
{
using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;Data Source=" + ExcelFileName))
{
try
{
conn.Open();
dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
}
catch (Exception exp)
{
throw exp;
} //获取数据表个数
int tablecount = dt.Rows.Count;
for (int i = 0; i < tablecount; i++)
{
string tablename = dt.Rows[i][2].ToString().Trim().TrimEnd('$');
if (TablesList.IndexOf(tablename) < 0)
{
TablesList.Add(tablename);
}
}
}
}
return TablesList;
} /// <summary>
/// 将Excel文件导出至DataTable(第一行作为表头)
/// </summary>
/// <param name="ExcelFilePath">Excel文件路径</param>
/// <param name="TableName">数据表名，如果数据表名错误，默认为第一个数据表名</param>
public static DataTable InputFromExcel(string ExcelFilePath, string TableName)
{
if (!File.Exists(ExcelFilePath))
{
throw new Exception("Excel文件不存在！");
} //如果数据表名不存在，则数据表名为Excel文件的第一个数据表
ArrayList TableList = new ArrayList();
TableList = GetExcelTables(ExcelFilePath); if (TableName.IndexOf(TableName) < 0)
{
TableName = TableList[0].ToString().Trim();
} DataTable table = new DataTable();
OleDbConnection dbcon = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0");
OleDbCommand cmd = new OleDbCommand("select * from [" + TableName + "$]", dbcon);
OleDbDataAdapter adapter = new OleDbDataAdapter(cmd); try
{
if (dbcon.State == ConnectionState.Closed)
{
dbcon.Open();
}
adapter.Fill(table);
}
catch (Exception exp)
{
throw exp;
}
finally
{
if (dbcon.State == ConnectionState.Open)
{
dbcon.Close();
}
}
return table;
} /// <summary>
/// 获取Excel文件指定数据表的数据列表
/// </summary>
/// <param name="ExcelFileName">Excel文件名</param>
/// <param name="TableName">数据表名</param>
public static ArrayList GetExcelTableColumns(string ExcelFileName, string TableName)
{
DataTable dt = new DataTable();
ArrayList ColsList = new ArrayList();
if (File.Exists(ExcelFileName))
{
using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;Data Source=" + ExcelFileName))
{
conn.Open();
dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, new object[] { null, null, TableName, null }); //获取列个数
int colcount = dt.Rows.Count;
for (int i = 0; i < colcount; i++)
{
string colname = dt.Rows[i]["Column_Name"].ToString().Trim();
ColsList.Add(colname);
}
}
}
return ColsList;
}
}
}
//该代码片段来自于: http://www.sharejs.com/codes/csharp/8623
C＃自定义导出数据到Excel中的类封装的更多相关文章
- 手把手教你springboot中导出数据到excel中
手把手教你springboot中导出数据到excel中 问题来源: 前一段时间公司的项目有个导出数据的需求,要求能够实现全部导出也可以多选批量导出(虽然不是我负责的,我自己研究了研究),我们的项目是x ...
- 1.ASP.NET MVC使用EPPlus，导出数据到Excel中
好久没写博客了,今天特地来更新一下,今天我们要学习的是如何导出数据到Excel文件中,这里我使用的是免费开源的Epplus组件. 源代码下载:https://github.com/caofangshe ...
- 【转】c# winform DataGridView导出数据到Excel中，可以导出当前页和全部数据
准备工作就是可以分页的DataGridView,和两个按钮,一个用来导出当前页数据到Excel,一个用来导出全部数据到Excel 没有使用SaveFileDialog,但却可以弹出保存对话框来 先做导 ...
- python 导出数据到excel 中，一个好用的导出数据到excel模块，XlsxWriter
最近公司有项目需要导出数据到excel,首先想到了,tablib,xlwt,xlrd,xlwings,win32com[还可以操作word],openpyxl,等模块但是 实际操作中tablib 写入 ...
- C#不用COM组件导出数据到Excel中
<?xml version='1.0'?><?mso-application progid='Excel.Sheet'?><Workbook xmlns='urn:sch ...
- C#导入导出数据到Excel的通用类代码
Excel文件导入导出,需引用Microsoft Excel 11.0 Object Library ///////////////////////////////////////////////// ...
- 从DataTable高效率导出数据到Excel
首先从数据库读取数据到DataTable,这我就不提了,大家都明白.下面直接介绍如何从DataTable高效率导出数据到Excel中的方法,代码如下: using Microsoft.Office.I ...
- Python导出数据到Excel表格-NotImplementedError: formatting_info=True not yet implemented
在使用Python写入数据到Excel表格中时出现报错信息记录:“NotImplementedError: formatting_info=True not yet implemented” 报错分析 ...
- 使用Open xml 操作Excel系列之二--从data table导出数据到Excel
由于Excel中提供了透视表PivotTable,许多项目都使用它来作为数据分析报表. 在有些情况下,我们需要在Excel中设计好模板,包括数据源表,透视表等, 当数据导入到数据源表时,自动更新透视表 ...
随机推荐
- ubuntu关闭THP
所有linux系统详细设置参考: https://docs.mongodb.org/manual/tutorial/transparent-huge-pages/ vi /etc/init.d/dis ...
- Oracle 11g新参数USE_LARGE_PAGES与AMM使用 (转载)
在之前的文章(http://space.itpub.net/17203031/viewspace-774843)中,笔者介绍了如何在Linux 2.6内核中配置HugePage以及AMM与其的不兼容性 ...
- Flex4/AS3.0自定义VideoPlayer组件皮肤,实现Flash视频播放器
要求 必备知识 本文要求基本了解 Adobe Flex编程知识. 开发环境 Flash Builder4/Flash Player11 演示地址 演示地址 资料下载 Adobe Flash Pla ...
- nginx 配置文件参数说明
#运行用户 user www-data; #启动进程,通常设置成和cpu的数量相等 worker_processes 1; #全局错误日志及PID文件 error_log /var/log ...
- EF CRUD 操作
1.Add 操作 public bool Add(EFDataModels.User model) { try { int result=0; using (DBEntities db = new D ...
- AX调用.dll
1,将DLL拷贝到C:\Program Files (x86)\Microsoft Dynamics AX\50\Client\Bin 2,在AOT添加引用,在选择你拷贝的DLL,确定.//Acces ...
- LA3027 合作网络-并查集压缩路径
有N个结点 一次 I u v 操作表示把结点u的父结点设为v,距离为|u-v|%1000.输入保证执行指令前u没有父结点 一次E u 操作表示询问u到根结点的距离 O操作表示结束 #include&l ...
- 学习总结 java 数据库 ResultSet 、PreparedStatement
package com.hanqi.test; import java.sql.*; public class jdbcTest { public static void main(String[] ...
- 洛谷P1530 分数化小数 Fractions to Decimals
P1530 分数化小数 Fractions to Decimals 103通过 348提交 题目提供者该用户不存在 标签USACO 难度普及/提高- 提交 讨论 题解 最新讨论 暂时没有讨论 题目 ...
- dell ipmi sol
http://blog.arnoudvermeer.nl/post/52375062605/howto-setup-ipmi-sol-on-a-dell-r-series-server http:// ...