MyXls导出Excel时在Web页即时生成原生Excel文件
关于MyXls生成Excel文件，本文不赘述。本文主要介绍在Web条件下利用MyXls即时生成原生Excel的方法。
至于NPOI方法即时生成Excel方法，请参考http://www.cnblogs.com/downmoon/archive/2011/04/16/2017603.html
需要引用dll,org.in2bits.MyXls，下载地址：http://sourceforge.net/projects/myxls/files/MyXls/
并在头部添加using org.in2bits.MyXls;
假如一个DataTable已经获取，那么方法如下：
一、生成本地文件：
///
<summary>
///
导出Excel
///
</summary>
public
static
void
ExportExcelForPercent(
string
sheetName,
string
xlsname,
int
areaid, DateTime dt)
{
DataTable table
=
GetDataTableForPercent(areaid, dt);
if
(table
==
null
||
table.Rows.Count
==
0
) {
return
; }
XlsDocument xls
=
new
XlsDocument();
Worksheet sheet
=
xls.Workbook.Worksheets.Add(sheetName);
//
填充表头
foreach
(DataColumn col
in
table.Columns)
{
sheet.Cells.Add(
1
, col.Ordinal
+
1
, col.ColumnName);
}
//
填充内容
for
(
int
i
=
0
; i
<
table.Rows.Count; i
++
)
{
for
(
int
j
=
0
; j
<
table.Columns.Count; j
++
)
{
sheet.Cells.Add(i
+
2
, j
+
1
, table.Rows[i][j].ToString());
}
}
//
保存
xls.FileName
=
xlsname;
xls.Save();
xls
=
null
;
}
二、web条件下利用MemoryStream即时生成：
///
<summary>
///
Myxls导出Excel
///
</summary>
public
static
void
ExportExcelForPercentForWeb(
string
sheetName,
string
xlsname,
int
areaid, DateTime curdate)
{
XlsDocument xls
=
new
XlsDocument();
Worksheet sheet
=
xls.Workbook.Worksheets.Add(sheetName);
try
{
DataTable table
=
GetDataTableForPercent(areaid, curdate);
if
(table
==
null
||
table.Rows.Count
==
0
) {
return
; }
//
XlsDocument xls = new XlsDocument();
//
Worksheet sheet = xls.Workbook.Worksheets.Add(sheetName);
//
填充表头
foreach
(DataColumn col
in
table.Columns)
{
sheet.Cells.Add(
1
, col.Ordinal
+
1
, col.ColumnName);
}
//
填充内容
for
(
int
i
=
0
; i
<
table.Rows.Count; i
++
)
{
for
(
int
j
=
0
; j
<
table.Columns.Count; j
++
)
{
sheet.Cells.Add(i
+
2
, j
+
1
, table.Rows[i][j].ToString());
}
}
//
保存
//
xls.FileName = xlsname;
//
xls.Save();
#region
客户端保存
using
(MemoryStream ms
=
new
MemoryStream())
{
xls.Save(ms);
ms.Flush();
ms.Position
=
0
;
sheet
=
null
;
xls
=
null
;
HttpResponse response
=
System.Web.HttpContext.Current.Response;
response.Clear();
response.Charset
=
"
UTF-8
"
;
response.ContentType
=
"
application/vnd-excel
"
;
//
"application/vnd.ms-excel";
System.Web.HttpContext.Current.Response.AddHeader(
"
Content-Disposition
"
,
string
.Format(
"
attachment; filename=
"
+
xlsname));
//
System.Web.HttpContext.Current.Response.WriteFile(fi.FullName);
byte
[] data
=
ms.ToArray();
System.Web.HttpContext.Current.Response.BinaryWrite(data);
}
#endregion
//
xls = null;
}
catch
(Exception ex)
{
}
finally
{
sheet
=
null
;
xls
=
null
;
}
}
三、调用方法：
private
void
SaveFile(
int
year,
int
month,
int
Areaid)
{
try
{
string
fileName
=
string
.Empty;
fileName
=
SQLParser.RandomKey(
10001
,
99999
)
+
"
.xls
"
;
string
sheetname
=
string
.Format(
"
瞬时达网络有限公司{0}[{1}年{2}月]销售表
"
, (Areaid
==
1
)
?
"
北方区
"
:
"
南方区
"
, year, month);
DateTime dt
=
new
DateTime(year, month, Areaid);
ExcelHelper.ExportExcelForPercentForWeb(sheetname, fileName, Areaid, dt);
//
Page.Response.Write("<script>window.close();</script>");
//
return;
}
catch
{
}
}
生成效果：
myXls下载地址：http://sourceforge.net/projects/myxls/files/MyXls/