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1.Óõ½µÄExcel±íµÄ¸ñʽ¼°ÄÚÈÝ
 
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 OleDbConnection con = new OleDbConnection();
try
{
OpenFileDialog openFile = new OpenFileDialog();//´ò¿ªÎļþ¶Ô»°¿ò¡£
openFile.Filter = ("Excel Îļþ(*.xls)|*.xls");//ºó׺Ãû¡£
if (openFile.ShowDialog() == DialogResult.OK)
{
string filename = openFile.FileName;
int index = filename.LastIndexOf("\\");//½ØÈ¡ÎļþµÄÃû×Ö
filename = filename.Substring(index + 1);
conExcel.ConnectionString = "Provider=Microsoft.Jet.Oledb.4.0;Data Source=" +
Application.StartupPath + "\\Appdata.mdb";
//½«excelµ¼Èëaccess
//distinct :ɾ³ýexcelÖØ¸´µÄÐÐ.
//[excelÃû].[sheetÃû] ÒÑÓеÄexcelµÄ±íÒª¼Ó$
//where not in : ²åÈë²»ÖØ¸´µÄ¼Ç¼¡£

string sql = "insert into Users2(Óû§±àºÅ,Óû§ÐÕÃû) select distinct * from [Excel 8.0;database=" +
filename + "].[name$] where Óû§±àºÅ not in (select Óû§±àºÅ from Users2) ";
OleDbCommand com = new OleDbCommand(sql, con);
con.Open();
com.ExecuteNonQuery();
MessageBox.Show("µ¼ÈëÊý¾Ý³É¹¦", "µ¼ÈëÊý¾Ý", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
con.Close();
}
 
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OleDbConnection con = new OleDbConnection();
try
{
SaveFileDialog saveFile = new SaveFileDialog();
saveFile.Filter = ("Excel Îļþ(*.xls)|*.xls");//Ö¸¶¨Îļþºó׺ÃûΪExcel Î


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1 룬²»ÔÊÐíÓÐ Null Öµ¡£ bit(1¡¢0 »ò NULL) Êý×Ö£¨×Ö½Ú£©£ ......

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ADO(ActiveX Data Object)ÊÇMicrosoftÊý¾Ý¿âÓ¦ÓóÌÐò¿ª·¢µÄнӿڣ¬Êǽ¨Á¢ÔÚOLE DBÖ®Éϵĸ߲ãÊý¾Ý¿â·ÃÎʼ¼Êõ£¬¼´Ê¹Äã¶ÔOLE DB£¬COM²»Á˽âÒ²ÄÜÇáËɶԸ¶ADO,ÒòΪËü·Ç³£¼òµ¥Ò×Óã¬ÉõÖÁ±ÈÄãÒÔÍùËù½Ó´¥µÄODBC API¡¢DAO¡¢RDO¶¼ÒªÈÝÒ×ʹÓ㬲¢² ......

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1 using System;
 2 using System.Collections;
 3 using System.Configuration;
 4 using System.Data;
 5 using System.Linq;
 6 using System.Web;
 7 using System.Web.Security;
 8 using&nbs ......

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XmlDocument xmldoc ;
XmlNode xmlnode ;
XmlElement xmlele ......

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3¡¢ÔÚC#ÖÐͨ¹ýʵÀý·ÃÎʾ²Ì¬·½·¨»ò³ÉÔ±±äÁ¿ÊDz»ºÏ·¨µÄ£¬»áÉú³É±àÒëÆ÷´íÎó¡£µ«ÊÇÎÒÃÇ¿ÉÒÔͨ¹ýÉùÃ÷ËûÃÇ ......
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