<summary>
/// Convert WebControl to Excel
/// </summary>
/// <param name="ctl"></param>
///System.Web.UI.Control ctl为datagrid名称,string file_name为到处的文件名称
public static void ToExcel(System.Web.UI.Control ctl,string file_name)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.Charset ="gb2312";
HttpContext.Current.Response.AppendHeader("Content-Disposition","attachment;filename="+file_name);
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
HttpContext.Current.Response.ContentType = "application/ms-excel";
//HttpContext.Current.Response.ContentType = "text/HTML";
//image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword
ctl.Page.EnableViewState =false;
System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("zh-CN",true);
System.IO.StringWriter tw = new System.IO.StringWriter(myCItrad) ;
System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter (tw);
ctl.RenderControl(hw);
HttpContext.Current.Response.Write(tw.ToString());
HttpContext.Current.Response.End();
}
/// Convert WebControl to Excel
/// </summary>
/// <param name="ctl"></param>
///System.Web.UI.Control ctl为datagrid名称,string file_name为到处的文件名称
public static void ToExcel(System.Web.UI.Control ctl,string file_name)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.Charset ="gb2312";
HttpContext.Current.Response.AppendHeader("Content-Disposition","attachment;filename="+file_name);
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
HttpContext.Current.Response.ContentType = "application/ms-excel";
//HttpContext.Current.Response.ContentType = "text/HTML";
//image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword
ctl.Page.EnableViewState =false;
System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("zh-CN",true);
System.IO.StringWriter tw = new System.IO.StringWriter(myCItrad) ;
System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter (tw);
ctl.RenderControl(hw);
HttpContext.Current.Response.Write(tw.ToString());
HttpContext.Current.Response.End();
}
导入/导出Excel
1.--从Excel文件中,导入数据到SQL数据库中,很简单,直接用下面的语句:
/*===================================================================*/
--如果接受数据导入的表已经存在
OPENROWSET('MICROSOFT.JET.OLEDB.4.0'
,'Excel 5.0;HDR=YES;DATABASE=c: est.xls',sheet1$)
--如果导入数据并生成表
OPENROWSET('MICROSOFT.JET.OLEDB.4.0'
,'Excel 5.0;HDR=YES;DATABASE=c: est.xls',sheet1$)
/*===================================================================*/ 2.--从SQL数据库中,导出数据到Excel:
--如果从SQL数据库中,导出数据到Excel,如果Excel文件已经存在,而且已经按照要接收的数据创建好表头,就可以简单的用:
,'Excel 5.0;HDR=YES;DATABASE=c: est.xls',sheet1$)
select * from 表 --如果Excel文件不存在,也可以用BCP来导成类Excel的文件,注意大小写:
--导出表的情况
--导出查询的情况
c: est.xls 为导入/导出的Excel文件名.
sheet1$ 为Excel文件的工作表名,一般要加上$才能正常使用.
--*/
3.--建立存储过程,导出真正的Excel文件(用此方法导出的Excel文件在用于导入时不会报错) --下面是导出真正Excel文件的方法:(请将一下所有代码复制到存储过程中) 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
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
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
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
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
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
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 @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
+']('+substring(@sql,2,8000)+')'
,@fdlist=substring(@fdlist,2,8000)
if @err<>0 goto lberr
set @sql='openrowset(''MICROSOFT.JET.OLEDB.4.0'',''Excel 8.0;HDR=YES
;DATABASE='+@path+@fname+''',['+@sheetname+'$])'
exec('insert into '+@sql+'('+@fdlist+') select '+@fdlist+' from ['+@tbname+']') set @sql='drop table ['+@tbname+']'
exec(@sql)
return
lbexit:
select cast(@err as varbinary(4)) as 错误号
,@src as 错误源,@desc as 错误描述
select @sql,@constr,@fdlist
go 4.--在.net中导出到Excel的简单实例.
(3).在Text.aspx上加Button1控件
private System.Data.DataTable GetData()
...{
SqlConnection conn= new SqlConnection(@"Server=XJIE;Initial Catalog=Northwind;Uid=sa;Pwd=xjie;");
SqlDataAdapter adapter= new SqlDataAdapter("select CompanyName 用户名,ContactTitle 联系主题,Address 住宅地址,ContactName 联系人,Phone 电话,City 城市 from Customers order by CustomerID desc",conn);
DataSet ds= new DataSet();
try
...{
adapter.Fill(ds,"Customer");
}
catch(Exception ex)
...{
MessageBox.Show(ex.ToString());
}
return ds.Tables[0];
} private void Button1_Click(object sender, System.EventArgs e)
...{
Application excel= new Application();
int rowIndex=1;
int colIndex=0;
DataTable table=GetData();
//将所得到的表的列名,赋值给单元格
foreach(DataColumn col in table.Columns)
...{
colIndex++;
excel.Cells[1,colIndex]=col.ColumnName;
}
foreach(DataRow row in table.Rows)
...{
rowIndex++;
colIndex=0;
foreach(DataColumn col in table.Columns)
...{
colIndex++;
excel.Cells[rowIndex,colIndex]=row[col.ColumnName].ToString();
}
}
//不可见,即后台处理
excel.Visible=true;
}
1.--从Excel文件中,导入数据到SQL数据库中,很简单,直接用下面的语句:
/*===================================================================*/
--如果接受数据导入的表已经存在
insert into 表 select
* fromOPENROWSET('MICROSOFT.JET.OLEDB.4.0'
,'Excel 5.0;HDR=YES;DATABASE=c: est.xls',sheet1$)
--如果导入数据并生成表
select
* into 表 fromOPENROWSET('MICROSOFT.JET.OLEDB.4.0'
,'Excel 5.0;HDR=YES;DATABASE=c: est.xls',sheet1$)
/*===================================================================*/ 2.--从SQL数据库中,导出数据到Excel:
--如果从SQL数据库中,导出数据到Excel,如果Excel文件已经存在,而且已经按照要接收的数据创建好表头,就可以简单的用:
insert into OPENROWSET(
'MICROSOFT.JET.OLEDB.4.0','Excel 5.0;HDR=YES;DATABASE=c: est.xls',sheet1$)
select * from 表 --如果Excel文件不存在,也可以用BCP来导成类Excel的文件,注意大小写:
--导出表的情况
EXEC master..xp_cmdshell
'bcp 数据库名.dbo.表名 out "c: est.xls" /c -/S"服务器名" /U"用户名" -P"密码"'--导出查询的情况
EXEC master..xp_cmdshell
'bcp "SELECT au_fname, au_lname FROM pubs..authors ORDER BY au_lname" queryout "c: est.xls" /c -/S"服务器名" /U"用户名" -P"密码"' /*--说明:c: est.xls 为导入/导出的Excel文件名.
sheet1$ 为Excel文件的工作表名,一般要加上$才能正常使用.
--*/
3.--建立存储过程,导出真正的Excel文件(用此方法导出的Excel文件在用于导入时不会报错) --下面是导出真正Excel文件的方法:(请将一下所有代码复制到存储过程中) 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(引用请保留此信息)--
*/ /**//*--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,@constrif @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
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(引用请保留此信息)--
*/ /**//*--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,@constrif @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,@sqlif @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
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 4.--在.net中导出到Excel的简单实例.
(
1).添加引用Microsoft Excel 11.0 Object Library (在COM中)(
2).在web.config的上<system.web>里加 <identity impersonate="true"/> //此句为了使用户能在本地打开文档,identify属性规定了身份验证的模式,一般情况下为false,这样安全性较高(3).在Text.aspx上加Button1控件
(
4).在cs页面添加 using Microsoft.Office.Interop.Excel;(
5).添加单击事件,在这里处理将数据库中的数据导入excel,代码如下: //定义方法GetData(),返回一个数据表private System.Data.DataTable GetData()
...{
SqlConnection conn= new SqlConnection(@"Server=XJIE;Initial Catalog=Northwind;Uid=sa;Pwd=xjie;");
SqlDataAdapter adapter= new SqlDataAdapter("select CompanyName 用户名,ContactTitle 联系主题,Address 住宅地址,ContactName 联系人,Phone 电话,City 城市 from Customers order by CustomerID desc",conn);
DataSet ds= new DataSet();
try
...{
adapter.Fill(ds,"Customer");
}
catch(Exception ex)
...{
MessageBox.Show(ex.ToString());
}
return ds.Tables[0];
} private void Button1_Click(object sender, System.EventArgs e)
...{
Application excel= new Application();
int rowIndex=1;
int colIndex=0;
excel.Application.Workbooks.Add(
true);DataTable table=GetData();
//将所得到的表的列名,赋值给单元格
foreach(DataColumn col in table.Columns)
...{
colIndex++;
excel.Cells[1,colIndex]=col.ColumnName;
}
//同样方法处理数据
foreach(DataRow row in table.Rows)
...{
rowIndex++;
colIndex=0;
foreach(DataColumn col in table.Columns)
...{
colIndex++;
excel.Cells[rowIndex,colIndex]=row[col.ColumnName].ToString();
}
}
//不可见,即后台处理
excel.Visible=true;
}