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先读取EXCEL中的数据
private void btnView_Click(object sender, System.EventArgs e)
{
dgExcelData.DataSource = null;
FileDialog dlgOpen = new OpenFileDialog();
dlgOpen.Filter="Excel Files (*.xls)|*.xls";
if(dlgOpen.ShowDialog() == DialogResult.OK)
{
txtPath.Text=dlgOpen.FileName;
string strCon = "Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = "+txtPath.Text.Trim()+";Extended Properties=Excel 8.0" ;
OleDbConnection myConn = new OleDbConnection();
try
{
this.Cursor = Cursors.WaitCursor;

//创建一个数据Excel连接******************************************************************
myConn = new OleDbConnection ( strCon ) ;
string strCom = " SELECT * FROM [Sheet1$]" ;
myConn.Open ();
//打开连接得到数据集合
oDS.Clear();
OleDbDataAdapter myCommand = new OleDbDataAdapter ( strCom , myConn ) ;
myCommand.Fill ( oDS , "[Sheet1$]" ) ;
//关闭连接
myConn.Close ( ) ;

if (!oDS.Tables[0].Columns.Contains("Insert Result"))
oDS.Tables[0].Columns.Add("Insert Result");

dgExcelData.SetDataBinding(oDS,"[Sheet1$]");


btnOk.Enabled = true;
this.Cursor = Cursors.Arrow;
inifrom();
}
catch(Exception err1)
{
MessageBox.Show(err1.Message);
myConn.Close();
this.Cursor = Cursors.Arrow;
}
}//END
}

sql中右键 所有任务 导入数据 选择 EXCEL版本 即可


下面是导出真正Excel文件的方法:

if exists (select * from dbo.sysobjects where id = object_id(N '[dbo].[p_exporttb] ') and OBJECTPROPERTY(id, N 'IsProcedure ') = 1)
drop procedure [dbo].[p_exporttb]
GO

/*--数据导出EXCEL

导出表中的数据到Excel,包含字段名,文件为真正的Excel文件
,如果文件不存在,将自动创建文件
,如果表不存在,将自动创建表
基于通用性考虑,仅支持导出标准数据类型

--邹建 2003.10(请保留此信息)--*/

/*--调用示例

p_exporttb @tbname= '地区资料 ',@path= 'c:\ ',@fname= 'aa.xls '
--*/
create proc p_exporttb
@tbname sysname, --要导出的表名
@path nvarchar(1000), --文件存放目录
@fname nvarchar(250)= ' ' --文件名,默认为表名
as
declare @err int,@src nvarchar(255),@desc nvarchar(255),@out int
declare @obj int,@constr nvarchar(1000),@sql varchar(8000),@fdlist varchar(8000)

--参数检测
if isnull(@fname, ' ')= ' ' set @fname=@tbname+ '.xls '

--检查文件是否已经存在
if right(@path,1) <> '\ ' set @path=@path+ '\ '
create table #tb(a bit,b bit,c bit)
set @sql=@path+@fname
insert into #tb exec master..xp_fileexist @sql

--数据库创建语句
set @sql=@path+@fname
if exists(select 1 from #tb where a=1)
set @constr= 'DRIVER={Microsoft Excel Driver (*.xls)};DSN= ' ' ' ';READONLY=FALSE '
+ ';CREATE_DB= " '+@sql+ ' ";DBQ= '+@sql
else
set @constr= 'Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties= "Excel 8.0;HDR=YES '
+ ';DATABASE= '+@sql+ ' " '


--连接数据库
exec @err=sp_oacreate 'adodb.connection ',@obj out
if @err <> 0 goto lberr

exec @err=sp_oamethod @obj, 'open ',null,@constr
if @err <> 0 goto lberr

/*--如果覆盖已经存在的表,就加上下面的语句
--创建之前先删除表/如果存在的话
select @sql= 'drop table [ '+@tbname+ '] '
exec @err=sp_oamethod @obj, 'execute ',@out out,@sql
--*/

--创建表的SQL
select @sql= ' ',@fdlist= ' '
select @fdlist=@fdlist+ ',[ '+a.name+ '] '
,@sql=@sql+ ',[ '+a.name+ '] '
+case
when b.name like '%char '
then case when a.length> 255 then 'memo '
else 'text( '+cast(a.length as varchar)+ ') ' end
when b.name like '%int ' or b.name= 'bit ' then 'int '
when b.name like '%datetime ' then 'datetime '
when b.name like '%money ' then 'money '
when b.name like '%text ' then 'memo '
else b.name end
FROM syscolumns a left join systypes b on a.xtype=b.xusertype
where b.name not in( 'image ', 'uniqueidentifier ', 'sql_variant ', 'varbinary ', 'binary ', 'timestamp ')
and object_id(@tbname)=id
select @sql= 'create table [ '+@tbname
+ ']( '+substring(@sql,2,8000)+ ') '
,@fdlist=substring(@fdlist,2,8000)
exec @err=sp_oamethod @obj, 'execute ',@out out,@sql
if @err <> 0 goto lberr

exec @err=sp_oadestroy @obj

--导入数据
set @sql= 'openrowset( ' 'MICROSOFT.JET.OLEDB.4.0 ' ', ' 'Excel 8.0;HDR=YES;IMEX=1
;DATABASE= '+@path+@fname+ ' ' ',[ '+@tbname+ '$]) '

exec( 'insert into '+@sql+ '( '+@fdlist+ ') select '+@fdlist+ ' from '+@tbname)

return

lberr:
exec sp_oageterrorinfo 0,@src out,@desc out
lbexit:
select cast(@err as varbinary(4)) as 错误号
,@src as 错误源,@desc as 错误描述
select @sql,@constr,@fdlist
go



if exists (select * from dbo.sysobjects where id = object_id(N '[dbo].[p_exporttb] ') and OBJECTPROPERTY(id, N 'IsProcedure ') = 1)
drop procedure [dbo].[p_exporttb]
GO

/*--数据导出EXCEL

导出查询中的数据到Excel,包含字段名,文件为真正的Excel文件
如果文件不存在,将自动创建文件
如果表不存在,将自动创建表
基于通用性考虑,仅支持导出标准数据类型

--邹建 2003.10(请保留此信息)--*/

/*--调用示例

p_exporttb @sqlstr= 'select * from 地区资料 '
,@path= 'c:\ ',@fname= 'aa.xls ',@sheetname= '地区资料 '
--*/
create proc p_exporttb
@sqlstr varchar(8000), --查询语句,如果查询语句中使用了order by ,请加上top 100 percent
@path nvarchar(1000), --文件存放目录
@fname nvarchar(250), --文件名
@sheetname varchar(250)= ' ' --要创建的工作表名,默认为文件名
as
declare @err int,@src nvarchar(255),@desc nvarchar(255),@out int
declare @obj int,@constr nvarchar(1000),@sql varchar(8000),@fdlist varchar(8000)

--参数检测
if isnull(@fname, ' ')= ' ' set @fname= 'temp.xls '
if isnull(@sheetname, ' ')= ' ' set @sheetname=replace(@fname, '. ', '# ')

--检查文件是否已经存在
if right(@path,1) <> '\ ' set @path=@path+ '\ '
create table #tb(a bit,b bit,c bit)
set @sql=@path+@fname
insert into #tb exec master..xp_fileexist @sql

--数据库创建语句
set @sql=@path+@fname
if exists(select 1 from #tb where a=1)
set @constr= 'DRIVER={Microsoft Excel Driver (*.xls)};DSN= ' ' ' ';READONLY=FALSE '
+ ';CREATE_DB= " '+@sql+ ' ";DBQ= '+@sql
else
set @constr= 'Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties= "Excel 8.0;HDR=YES '
+ ';DATABASE= '+@sql+ ' " '

--连接数据库
exec @err=sp_oacreate 'adodb.connection ',@obj out
if @err <> 0 goto lberr

exec @err=sp_oamethod @obj, 'open ',null,@constr
if @err <> 0 goto lberr

--创建表的SQL
declare @tbname sysname
set @tbname= '##tmp_ '+convert(varchar(38),newid())
set @sql= 'select * into [ '+@tbname+ '] from( '+@sqlstr+ ') a '
exec(@sql)

select @sql= ' ',@fdlist= ' '
select @fdlist=@fdlist+ ',[ '+a.name+ '] '
,@sql=@sql+ ',[ '+a.name+ '] '
+case
when b.name like '%char '
then case when a.length> 255 then 'memo '
else 'text( '+cast(a.length as varchar)+ ') ' end
when b.name like '%int ' or b.name= 'bit ' then 'int '
when b.name like '%datetime ' then 'datetime '
when b.name like '%money ' then 'money '
when b.name like '%text ' then 'memo '
else b.name end
FROM tempdb..syscolumns a left join tempdb..systypes b on a.xtype=b.xusertype
where b.name not in( 'image ', 'uniqueidentifier ', 'sql_variant ', 'varbinary ', 'binary ', 'timestamp ')
and a.id=(select id from tempdb..sysobjects where name=@tbname)

if @@rowcount=0 return

select @sql= 'create table [ '+@sheetname
+ ']( '+substring(@sql,2,8000)+ ') '
,@fdlist=substring(@fdlist,2,8000)

exec @err=sp_oamethod @obj, 'execute ',@out out,@sql
if @err <> 0 goto lberr

exec @err=sp_oadestroy @obj

--导入数据
set @sql= 'openrowset( ' 'MICROSOFT.JET.OLEDB.4.0 ' ', ' 'Excel 8.0;HDR=YES
;DATABASE= '+@path+@fname+ ' ' ',[ '+@sheetname+ '$]) '

exec( 'insert into '+@sql+ '( '+@fdlist+ ') select '+@fdlist+ ' from [ '+@tbname+ '] ')

set @sql= 'drop table [ '+@tbname+ '] '
exec(@sql)
return

lberr:
exec sp_oageterrorinfo 0,@src out,@desc out
lbexit:
select cast(@err as varbinary(4)) as 错误号
,@src as 错误源,@desc as 错误描述
select @sql,@constr,@fdlist
go