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Net读取Excel 返回DataTable

作者:石家庄绿之洲商贸有限公司 来源:www.365tt315.com 未知发布时间:2017-09-02 11:43:52
Net读取Excel 返回DataTable

> Web开发 > ASP.Net > 正文 Net读取Excel 返回DataTable 2014-01-13 来源:℡メ㏑╭ァ小凯

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using System;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
using System.Data;
using System.IO;
using System.Linq;
using System.Web;
using System.Collections;
using System.Data.OleDb;
using NuctechProject.DTO.Bll;
using System.Collections.Generic;

namespace NuctechProject.Layouts.Project
{
public partial class IntroductionPlan : LayoutsPageBase
{
string url = Common.rootUrl;
private string _strConn; //导入excel时的连接
string pmurl = Common.proUrl;
private UserBLL bll = new UserBLL();
protected void Page_Load(object sender, EventArgs e)
{
hidProid.Value = Request.QueryString["proid"];
}

protected void BtnOK_Click(object sender, EventArgs e)
{
DataTable excelTable = null;


SPSecurity.RunWithElevatedPrivileges(delegate
{
if (BaseInfoTemplateFile.HasFile)
{

List noInput = new List();
string strLoginName = HttpContext.Current.User.Identity.Name; //获取用户名
string folderTemp = strLoginName.Substring(strLoginName.LastIndexOf('\\') + 1);
try
{
string extension = Path.GetExtension(BaseInfoTemplateFile.FileName); //获取文件的后缀
if (extension != null)
{
string fileException = extension.ToLower();
if (fileException == ".xlsx" || fileException == ".xls")
{
#region 读取Excel
string fileFolder = Server.MapPath("~/_layouts/15/images/" + folderTemp + "Upfile/");
if (!Directory.Exists(fileFolder)) //根目录
{
Directory.CreateDirectory(fileFolder); //判断上传目录是否存在 自动创建
}
BaseInfoTemplateFile.SaveAs(Server.MapPath("~/_layouts/15/images/" + folderTemp + "Upfile/" + BaseInfoTemplateFile.FileName));
string strFilepathNmae = Server.MapPath("~/_layouts/15/images/" + folderTemp + "Upfile/" + BaseInfoTemplateFile.FileName);
string strExcel = ExcelSheetName(strFilepathNmae)[0].ToString();
excelTable = ExcelDataSource(strFilepathNmae, strExcel).Tables[0];
#endregion
//data是excel的数据
DataTable data = ExcelDataSource(strFilepathNmae, strExcel).Tables[0];

//try
//{
if (data != null)
{

foreach (DataRow row in data.Rows)
{
//读取
}


}
//}
//catch (Exception)
//{
// Page.ClientScript.RegisterStartupScript(Page.ClientScript.GetType(), "myscript", "<script type='text/javascript'>$.ligerDialog.closeWaitting();alert('Excel表列名与系统不符合,请检查Excel表列名!');</script>");
// return;
//}
}

else
{
Page.ClientScript.RegisterStartupScript(Page.ClientScript.GetType(), "myscript", "<script type='text/javascript'>$.ligerDialog.closeWaitting();alert('您选择的文件不是Excel格式!');</script>");
return;
}
}

}
finally //最终要把临时存储的文件删除
{
string strFileFolder = Server.MapPath("~/_layouts/15/images/" + folderTemp + "Upfile/");
if (Directory.Exists(strFileFolder)) //根目录
{
//Directory.CreateDirectory(strFileFolder);//判断上传目录是否存在 自动创建
Directory.Delete(strFileFolder, true);
}

else
{
Page.ClientScript.RegisterStartupScript(Page.ClientScript.GetType(), "myscript", "<script type='text/javascript'>ReturnPageValue();</script>");
}
}
}
else
{
Page.ClientScript.RegisterStartupScript(Page.ClientScript.GetType(), "myscript", "<script type='text/javascript'>$.ligerDialog.closeWaitting();alert('请选择导入文件!');</script>");
return;
}
});
}

protected void BtnClose_Click(object sender, EventArgs e)
{
Page.ClientScript.RegisterStartupScript(Page.ClientScript.GetType(), "myscript", "<script type='text/javascript'>ReturnPageValue();</script>");

}
///
/// 连接到Excel
///
/// 文件路径
/// sheet名字
///
public DataSet ExcelDataSource(string filepath, string sheetname)
{
_strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath +
";Extended Properties='Excel 12.0;HDR=YES'";
new OleDbConnection(_strConn);
var oada = new OleDbDataAdapter("select * from [" + sheetname + "]", _strConn);
var ds = new DataSet();
oada.Fill(ds);
return ds;
}
///
/// 获得Excel中的所有sheetname
///
/// 文件路径
///
public ArrayList ExcelSheetName(string filepath)
{
_strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath +
";Extended Properties='Excel 12.0;HDR=YES'";
var al = new ArrayList();
var conn = new OleDbConnection(_strConn);
conn.Open();
DataTable sheetNames = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables,
new object[] { null, null, null, "TABLE" });
conn.Close();
if (sheetNames != null)
foreach (DataRow dr in sheetNames.Rows)
{
al.Add(dr[2]);
}
return al;
}

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