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Import Excel Data to SQL Server using Asp.net

Source: Internet
Author: User
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The program robust control is added for some code snippets on the Internet.

The front-end interface is as follows:

<% @ Page Language = "C #" autoeventwireup = "true" codefile = "default. aspx. cs" inherits = "_ default" %>

<! Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<HTML xmlns = "http://www.w3.org/1999/xhtml">
<Head runat = "server">
<Title> No title page </title>
</Head>
<Body>
<Form ID = "form1" runat = "server">
<Div>
<Asp: fileupload id = "fuopen" runat = "server"/>
<Asp: button id = "btnupload" runat = "server" text = "import" onclick = "btnupload_click"/>
<Asp: gridview id = "gridview1" runat = "server">
</ASP: gridview>
</Div>
</Form>
</Body>
</Html>

Background code:

Using system;
Using system. configuration;
Using system. Data;
Using system. Web;
Using system. Web. Security;
Using system. Web. UI;
Using system. Web. UI. htmlcontrols;
Using system. Web. UI. webcontrols;
Using system. Web. UI. webcontrols. webparts;
Using system. Data. oledb;
Public partial class _ default: system. Web. UI. Page
{
Protected void page_load (Object sender, eventargs E)
{

}
Protected void btnupload_click (Object sender, eventargs E)
{
// Make sure that you have selected the file to be imported. Upload the file first, and then complete the import on the server.
If (this. fuopen. postedfile. filename! = "")
{
// Make sure the file is in Excel format
// Response. Write (this. fuopen. filename. substring (this. fuopen. filename. lastindexof ('.')));
If (this. fuopen. filename. substring (this. fuopen. filename. lastindexof ('.') + 1) = "xls ")
{
Random RD = new random (1 );
String filename = datetime. now. date. tostring ("yyyymmdd") + datetime. now. tolongtimestring (). replace (":", "") + Rd. next (1, 9999 ). tostring () + ". xls ";
Try
{
This. fuopen. postedfile. saveas (@ server. mappath ("fileupload/") + filename );
}
Catch (httpexception he)
{
Response. Write ("the File Upload Failed. Check whether the file is too large and whether you have the write permission! ");
Return;
}
# Region -------- Read File Content to server memory ----------
String conn = "provider = Microsoft. jet. oledb.4.0; Data Source = "+ server. mappath ("fileupload") + "/" + filename + "; extended properties = Excel 8.0 ";
Oledbconnection thisconnection = new oledbconnection (conn );
Thisconnection. open ();
// Ensure that the field name is the same as that in the Excel table
String SQL = "select stuname, majorid, cardid from [sheet1 $]";
Oledbdataadapter mycommand = new oledbdataadapter (SQL, thisconnection );
Dataset DS = new dataset ();
Mycommand. Fill (DS, "[sheet1 $]");
Thisconnection. Close ();
This. gridview1.datasource = Ds;
This. gridview1.databind ();
# Endregion

# Region -------- insert to database ---------
String conn1 = "User ID = sa; Data Source = 127.0.0.1 // sqlserver; Password = sa; initial catalog = login; provider = sqloledb.1 ;";
Oledbconnection thisconnection1 = new oledbconnection (conn1 );
Thisconnection1.open ();
Int COUNT = Ds. Tables ["[sheet1 $]"]. Rows. count;

For (INT I = 0; I <count; I ++)
{
String stuname, majorid, cardid;
Stuname = Ds. Tables ["[sheet1 $]"]. Rows [I] ["stuname"]. tostring ();
Majorid = Ds. Tables ["[sheet1 $]"]. Rows [I] ["majorid"]. tostring ();
Cardid = Ds. Tables ["[sheet1 $]"]. Rows [I] ["cardid"]. tostring ();
// Id_3 = Ds. Tables ["[sheet1 $]"]. Rows [I] ["id_3"]. tostring ();
String excelsql = "insert into fee_stu (stuname, majorid, cardid) values ('" + stuname + "', '" + majorid + "', '" + cardid + "') ";
Oledbcommand mycommand1 = new oledbcommand (excelsql, thisconnection1 );
Try
{
Mycommand1.executenonquery ();
}
Catch (oledbexception ODE)
{
Response. Write ("<B> Import failed. Please try again! </B> ");
Return;
}
}
Response. Write ("updated successfully ");
Thisconnection1.close ();
# Endregion
}
Else
{
Response. Write ("the format of the imported file is incorrect! ");
}

}
Else
{
Response. Write ("You have not selected the file to import! ");
}

}
}

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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