SQL Server数据库里图片以二进制格式的image类型存储，存入时先转换成二进制数据，取出时由二进制转换成image/jpg格式才能显示
存入：
视图代码，需要一个上传文件的控件
@using (Html.BeginForm(
"
Index
"
,
"
NewImg
"
, FormMethod.Post,
new
{ enctype =
"
multipart/form-data
"
}))
{
if
(@ViewBag.ImgId !=
null
)
{
<img src=
"
@Url.Action(
"
ShowImg
"
,
"
Image
"
, new { id = ViewBag.ImgId })
"
width=
"
111
"
height=
"
111
"
alt=
"
img
"
/>
<br />
<br />
}
<input type=
"
file
"
name=
"
imgUserProfile
"
id=
"
imgUserProfile
"
/>
<br />
<br />
<input type=
"
submit
"
value=
"
upload img
"
/>
}
在控制器中，接收到传入的图片文件，以byte类型存入数据库
public
ActionResult Index(HttpPostedFileBase imgUserProfile)
{
try
{
using
(
var
context =
new
newpicEntities())
{
var
imgData =
new
pict1();
//
var
imgLength =
imgUserProfile.ContentLength;
var
imgByte =
new
byte
[imgLength];
imgUserProfile.InputStream.Read(imgByte,
0
, imgLength);
imgData.pict
=
imgByte;
context.AddTopict1(imgData);
context.SaveChanges();
ViewBag.ImgId
=
imgData.id;
ViewBag.Result
=
"
success
"
;
}
}
catch
(Exception e)
{
ViewBag.Result
=
e;
}
return
View(
"
Index
"
);
}
读取并显示数据库中图片：
控制器
public
ActionResult ShowImg(
int
id)
{
var
image = (
from
m
in
db.pict1
where
m.id ==
id
select
m.pict).FirstOrDefault();
var
stream =
new
MemoryStream(image.ToArray());
return
new
FileStreamResult(stream,
"
image/jpg
"
);
}
视图
<
img
src
="@Url.Action("
ShowImg","Image",new{id
= item.id})"
height
="117px"
width
="144px"
alt
=""
/>
