c#读取excel内容内容示例分享

1、excel 需是.xls 格式
2、添加引用microsoft.office.interop.excel.dll

using system;
using system.collections.generic;
using system.linq;
using system.text;
using system.data;
using system.data.oledb;
using excel = microsoft.office.interop.excel;
using system.diagnostics;

namespace readexcel
{
    class program
    {
        static void main(string[] args)
        {
            string filename = @"d:\transferplant\111.xls";
            datatable dt = exceltodataset(filename);
            if (dt.rows.count > 0)
            {
                for (int i = 0; i < dt.rows.count; i++)
                {
                    console.writeline(dt.rows[i][0].tostring());
                }
            }
        }

        static public datatable exceltodataset(string filename)
        {
            string strcon = " provider = microsoft.jet.oledb.4.0 ; data source = "+filename+";extended properties=excel 8.0";
            oledbconnection conn = new oledbconnection(strcon);
            conn.open();
            //返回excel的架构，包括各个sheet表的名称,类型，创建时间和修改时间等　
            datatable dtsheetname = conn.getoledbschematable(oledbschemaguid.tables, new object[] { null, null, null, "table" });
            //包含excel中表名的字符串数组
            string[] strtablenames = new string[dtsheetname.rows.count];
            for (int k = 0; k < dtsheetname.rows.count; k++)
            {
                strtablenames[k] = dtsheetname.rows[k]["table_name"].tostring();
            }
            oledbdataadapter mycommand = null;
            datatable dt = new datatable();
            //从指定的表明查询数据,可先把所有表明列出来供用户选择
            string strexcel = "select * from [" + strtablenames[0] + "]";
            mycommand = new oledbdataadapter(strexcel, strcon);
            mycommand.fill(dt);

            return dt;
        }
    }
}