Asp. NET, upload and read Excel file data

asp.net|excel| Upload | Data in csdn, people often ask how to open an Excel database file. This article through a simple example, the realization reads the Excel data file.

First, create a Web application project, and add a DataGrid control, a file control, and a button control to the Web page.

<input id= "File1" type= "file" Name= "File1" runat= "Server" >
<asp:button id= "Button1" runat= "Server" text= "button" ></asp:Button>
<asp:datagrid id= "DATAGRID1" runat= "Server" ></asp:DataGrid>

Import the OLE DB namespace first in Code view:
Using System.Data.OleDb;

Enter the following code in the Click event of the button:

String Strpath= "c:\\test\\" + DateTime.Now.ToString ("YYYYMMDDHHMMSS") + ". xls";

File1.PostedFile.SaveAs (strpath);

String mystring= "Provider = microsoft.jet.oledb.4.0; Data Source = ' + strpath + '; Extended Properties=excel 8.0 ";

OleDbConnection cnnxls = new OleDbConnection (mystring);

OleDbDataAdapter Myda =new OleDbDataAdapter ("select * from [sheet1$]", Cnnxls);

DataSet myDS =new DataSet ();

Myda.fill (myds);

Datagrid1.datasource=myds.tables[0];

Datagrid1.databind ();

Where C:\test has read and write permission to the ASPNET user.