利用MyXls导出Excel并下载
导出Excel并且下载
代码
protected
void
butExport_Click(
object
sender, EventArgs e)
{
try
{
DataTable dt
=
GetList(StrSql).Tables[
0
];
ExportExcel excel
=
new
ExportExcel();
string
fileName
=
excel.Export(dt, DropDownList1.SelectedItem.Text, DataName);
string
path
=
Request.PhysicalApplicationPath
+
"
Excel\\
"
+
fileName
+
"
.xls
"
;
DownFile.ResponseFile(Page.Request, Page.Response, fileName
+
"
.xls
"
, path,
1024000
);
FileInfo file
=
new
FileInfo(path);
file.Delete();
}
catch
(Exception ex)
{
throw
new
AppException(ex);
}
}
利用MyXls导出Excel
代码
///
<summary>
///
导出Excel
///
</summary>
///
<param name="sender"></param>
///
<param name="e"></param>
public
string
Export(DataTable dt,
string
xlsName, List
<
string
>
dataName)
{
XlsDocument xls
=
new
XlsDocument();
string
fileName
=
DateTime.Now.ToString(
"
yyyyMMddhhmmss
"
);
xls.FileName
=
fileName;
Worksheet sheet
=
xls.Workbook.Worksheets.Add(xlsName);
//
Sheet名称
Cells cells
=
sheet.Cells;
Cell cell
=
cells.Add(
1
,
1
, dataName[
0
].ToString());
cell.Font.Bold
=
true
;
for
(
int
i
=
1
; i
<
dataName.Count; i
++
)
{
cell
=
cells.Add(
1
, i
+
1
, dataName[i].ToString());
cell.Font.Bold
=
true
;
}
for
(
int
i
=
0
; i
<
dt.Rows.Count; i
++
)
{
for
(
int
j
=
0
; j
<
dt.Columns.Count; j
++
)
{
cells.Add(i
+
2
, j
+
1
, dt.Rows[i][j].ToString());
}
}
string
file
=
System.Web.HttpContext.Current.Server.MapPath(
"
/Excel/
"
);
xls.Save(file);
return
fileName;
}
文件下载，目前用着还不错
代码
public
static
bool
ResponseFile(HttpRequest _Request, HttpResponse _Response,
string
_fileName,
string
_fullPath,
long
_speed)
{
try
{
FileStream myFile
=
new
FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
BinaryReader br
=
new
BinaryReader(myFile);
try
{
_Response.AddHeader(
"
Accept-Ranges
"
,
"
bytes
"
);
_Response.Buffer
=
false
;
long
fileLength
=
myFile.Length;
long
startBytes
=
0
;
double
pack
=
10240
;
//
10K bytes
//
int sleep = 200;
//
每秒5次 即5*10K bytes每秒
int
sleep
=
(
int
)Math.Floor(
1000
*
pack
/
_speed)
+
1
;
if
(_Request.Headers[
"
Range
"
]
!=
null
)
{
_Response.StatusCode
=
206
;
string
[] range
=
_Request.Headers[
"
Range
"
].Split(
new
char
[] {
'
=
'
,
'
-
'
});
startBytes
=
Convert.ToInt64(range[
1
]);
}
_Response.AddHeader(
"
Content-Length
"
, (fileLength
-
startBytes).ToString());
if
(startBytes
!=
0
)
{
//
Response.AddHeader("Content-Range", string.Format(" bytes {0}-{1}/{2}", startBytes, fileLength-1, fileLength));
}
_Response.AddHeader(
"
Connection
"
,
"
Keep-Alive
"
);
_Response.ContentType
=
"
application/octet-stream
"
;
_Response.AddHeader(
"
Content-Disposition
"
,
"
attachment;filename=
"
+
HttpUtility.UrlEncode(_fileName, System.Text.Encoding.UTF8));
br.BaseStream.Seek(startBytes, SeekOrigin.Begin);
int
maxCount
=
(
int
)Math.Floor((fileLength
-
startBytes)
/
pack)
+
1
;
for
(
int
i
=
0
; i
<
maxCount; i
++
)
{
if
(_Response.IsClientConnected)
{
_Response.BinaryWrite(br.ReadBytes(
int
.Parse(pack.ToString())));
Thread.Sleep(sleep);
}
else
{
i
=
maxCount;
}
}
}
catch
{
return
false
;
}
finally
{
br.Close();
myFile.Close();
}
}
catch
{
return
false
;
}
return
true
;
}