C#winform中Excel电子表格导入数据库示例

做了一个数据录入程序,本打算一条条录入,可是后来发现当数据量比较庞大时,就十分不方便了,没办法在网上查了一些资料,结合我的实际做了个excel电子表格导入数据库的示例:

首先要保证将要导入数据库的excel表格中的数据和数据库字段相符,excel中不能存在数据表中不存在的字段。获取excel文档完整路径,并将其中的数据生成dataset对象:

 

代码
  private  DataSet xsldata( string  filepath)

       {

           
string  strCon  =   " Provider=Microsoft.Jet.OLEDB.4.0;Data Source= "   +  filepath  +   " ;Extended Properties='Excel 8.0;IMEX=1' " ;

           System.Data.OleDb.OleDbConnection Conn 
=   new  System.Data.OleDb.OleDbConnection(strCon);

           
string  strCom  =   " SELECT * FROM [Sheet1$] " ;

           Conn.Open();

           System.Data.OleDb.OleDbDataAdapter myCommand 
=   new  System.Data.OleDb.OleDbDataAdapter(strCom, Conn);

           DataSet ds 
=   new  DataSet();
           
           myCommand.Fill(ds, 
" [Sheet1$] " );
           dataGridView1.DataSource 
=  ds.Tables[ 0 ];
           Conn.Close();

           
return  ds;

       }

 

完成之后把dataset对象导入数据库中,这里说明一下excel的头一行系统会默认为列名,不对其做导入操作,所以最好做个处理,这里我添加了列名。

 

代码
  private   void  button1_Click( object  sender, EventArgs e)
        {
            
if (txtpath.Text == "" )
            {
               MessageBox.Show(
" 请选择要导入的Excel文档! " , " 系统提示 " ,MessageBoxButtons.OK,MessageBoxIcon.Information);
                   
                    
return ;
               
            }
            
string  filepath = txtpath.Text;
            SqlConnection conn 
= new  SqlConnection(strcon); // 链接数据库

            conn.Open();

            
try

            {

              

               DataSet ds 
=   new  DataSet();
// 取得数据集
//调用上面的函数

               ds 
=  xsldata(filepath);
               
// dataGridView2.DataSource = ds.Tables[0];
                int  errorcount  =   0 ; // 记录错误信息条数

               
int  insertcount  =   0 ; // 记录插入成功条数

               
int  updatecount  =   0 ; // 记录更新信息条数

                
for  ( int  i  =   0 ; i  <  ds.Tables[ 0 ].Rows.Count; i ++ )

               {

                   
int   cardtypeid  =  Convert.ToInt32(ds.Tables[ 0 ].Rows[i][ 0 ].ToString());

                   
string  cardnum  =  ds.Tables[ 0 ].Rows[i][ 1 ].ToString();

                   
string  cardpwd  =  ds.Tables[ 0 ].Rows[i][ 2 ].ToString();
                   
int  officeid  =  Convert.ToInt32(ds.Tables[ 0 ].Rows[i][ 3 ].ToString());
                   DateTime  stdt 
=  Convert.ToDateTime(ds.Tables[ 0 ].Rows[i][ 4 ].ToString());
                   
                   
string  cardstate =  ds.Tables[ 0 ].Rows[i][ 5 ].ToString();
                   
int  userid = Convert.ToInt32(ds.Tables[ 0 ].Rows[i][ 6 ].ToString());
                  
                   
if  (cardtypeid  !=   0   &&  cardnum  !=   ""   &&  cardpwd  !=   ""   &&  userid  !=   0  )

                   {

                       SqlCommand selectcmd 
=   new  SqlCommand( " select count(*) from cardsinfo where CardNum=' "   +  cardnum  +   " 'and CardPwd=' "   +  cardpwd  +   " ' and CardState='1' and TypeID= " + cardtypeid, conn);

                       
int  count  =  Convert.ToInt32(selectcmd.ExecuteScalar());

                       
if  (count  >   0 )

                       {
                           updatecount
++ ;
                          
                       }
                       
else
                       {

                           SqlCommand insertcmd
=   new  SqlCommand( " insert into cardsinfo(TypeID,CardNum,CardPwd,OutByOffID,CardTime,CardState,CardByUser) values( "   +  cardtypeid  +   " ,' "   +  

                                                                 cardnum 
+   " ',' "   +  cardpwd  +   " ', "   +  officeid  +   " ,' "   +  stdt +   " ','1', " + userid + " ) " , conn);

                           insertcmd.ExecuteNonQuery();

                           insertcount
++ ;

                       }

                      

                   }
                   
else

                   {

                       
// MessageBox.Show("电子表格信息有错!");
                       errorcount ++ ;
                       
;  

                    }
                 

               }

               MessageBox.Show( insertcount 
+   " 条数据导入成功! "   +  updatecount  +   " 条数据重复! "   +  errorcount  +   " 条数据部分信息为空没有导入! " );

           }

           
catch  (Exception ex)

           {

              MessageBox.Show(ex.Message);

           }

           
finally

           {

               conn.Close();

           } 
        }

 

这样简单的excel电子表格导入数据库就完成了

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