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[];
}
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
refer : https://www.paragon-inc.com/resources/blogs-posts/easy_excel_interaction_pt1
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 = ,isOK = false,dt = DateTimeOffset.Now,dou = 50.66 },
new Person { name = "xinyao", age = ,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[, , , ]; //FromRow, FromColumn, ToRow, ToColumn , 是从1开始的不是0哦
cells = ws.Cells["A1,A2"]; //"A1,A2" 我们叫 address
cells.Merge = true;
cells.Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
Read data from excel
System.IO.FileInfo file = new System.IO.FileInfo(Server.MapPath(@"~\test.xlsx"));
using (ExcelPackage excel = new ExcelPackage(file))
{
ExcelWorksheet worksheet = excel.Workbook.Worksheets.First(s => s.Name == "table1");
//table size
//算法 : 假设你在 B2 写一个值，那么 row 是 2, column 是 2
var rowCount = worksheet.Dimension.End.Row;
var columnCount = worksheet.Dimension.End.Column; //first row is columns
var x = worksheet.Cells["A1,A2"]; //"A1,A2" 我们叫 address foreach (var firstRowCell in worksheet.Cells[, , , columnCount])
{
string value = firstRowCell.Text;
} //second row is data
for (var rowNumber = ; rowNumber <= worksheet.Dimension.End.Row; rowNumber++)
{
var row = worksheet.Cells[rowNumber, , rowNumber, worksheet.Dimension.End.Column];
foreach (var cell in row)
{
bool isDate = cell.Value is DateTime; //check 类型
string format = cell.Style.Numberformat.Format; //check format
string value = cell.Text;
}
}
}