读取和导出下载 excel 2003,2007 资料

    protected void Page_Load(object sender, EventArgs e)

    {

        //直接在bin add referece search Microsoft.Office.Interop.Excel.dll (.net 4.5 version 好像是是 1.4.0.0.0)

        string filePath = Request.MapPath(@"~\excel\someData.xlsx"); //excel文件路径(server path)

        string sheetName = "Sheet1"; //文件中，哪一个sheet

        string connectionString07 = String.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties='Excel 12.0;HDR=YES'", filePath);

        //string connectionString03 = String.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties=Excel 8.0", filePath);               

        string query = String.Format("select * from [{0}$]", sheetName); 

        OleDbConnection connection = new OleDbConnection(connectionString07);

        OleDbDataAdapter adapter = new OleDbDataAdapter(query, connectionString07);

        DataSet dataSet = new DataSet();

        adapter.Fill(dataSet);

        DataTable table = dataSet.Tables[0];        

    }

注意 : 如果读取后要insert to SQL， 要注意格式和字的长度，把最长的放最上面，微软默认会依据前面8 rows来决定类型和长度等等。(如果遇到问题可以参考)

 

导出 excel 让游览器下载 (not ajax)

首先使用这个插件 http://epplus.codeplex.com/documentation (nuget可以下载)

更多功能介绍 : http://www.codeproject.com/Articles/680421/Create-Read-Edit-Advance-Excel-Report-in

然后 code : 

using OfficeOpenXml;

public class Person

{

    public string name { get; set; }

    public int age { get; set; }

    public bool isOK { get; set; }

    public DateTimeOffset dt { get; set; }

    public double dou { get; set; }

}

protected void Page_Load(object sender, EventArgs e)

{

    try

    {

        List<Person> persons = new List<Person> { 

            new Person { name = "keatkeat", age = 10,isOK = false,dt = DateTimeOffset.Now,dou = 50.66 }, 

            new Person { name = "xinyao", age = 12,isOK = true,dt = DateTimeOffset.Now,dou = 50.00 } };



        using (ExcelPackage pck = new ExcelPackage())

        {

            //Create the worksheet

            ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Demo");

            ws.Cells["A1"].LoadFromCollection<Person>(persons, true); //load data from collection 

            Response.Clear();

            Response.AddHeader("content-disposition", "attachment;  filename=file.xlsx"); //file name

            Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";

            Response.BinaryWrite(pck.GetAsByteArray());

            Response.End();

        }

    }

    catch (Exception ex)

    {

        throw;

    }

}

建议是开一个独立的 web form page 来处理，前端可以简单的用 window popup 来做下载 ^^ 

一些常用的 Excel 操作 : 

merge & center 

var cells = ws.Cells[1, 1, 1, 5]; //FromRow, FromColumn, ToRow, ToColumn , 是从1开始的不是0哦

cells.Merge = true;

cells.Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;