1
public
void
GetImageSize(
string
FullFileName,
int
intPrintImageHeight,
int
intPrintImageWidth,
ref
int
intmageHeight,
ref
int
intImageWidth)
2
{
3
//
Dim oImage As Image = Nothing
4
//
oImage = Image.FromFile(FullFileName.Replace("/", "\").Replace("http:\\", ""))
5
6
//
Dim bytes As Byte() = New System.Net.WebClient().DownloadData("")
7
8
WebRequest webRequest__1
=
WebRequest.Create(FullFileName);
9
WebResponse webResponse
=
webRequest__1.GetResponse();
10
Bitmap oImage
=
new
Bitmap(webResponse.GetResponseStream());
11
//
intImageWidth = myImage.Width
12
//
intmageHeight = myImage.Height
13
14
try
{
15
if
(oImage.Width
>
intPrintImageWidth
&&
oImage.Height
>
intPrintImageHeight) {
16
if
((intPrintImageWidth
/
oImage.Width)
<
(intPrintImageHeight
/
oImage.Height)) {
17
intImageWidth
=
intPrintImageWidth;
18
intmageHeight
=
Conversion.Int(oImage.Height
*
intPrintImageWidth
/
oImage.Width);
19
}
else
{
20
intImageWidth
=
Conversion.Int(oImage.Width
*
intPrintImageHeight
/
oImage.Height);
21
intmageHeight
=
intPrintImageHeight;
22
}
23
}
else
if
(oImage.Width
>
intPrintImageWidth) {
24
intImageWidth
=
intPrintImageWidth;
25
intmageHeight
=
Conversion.Int(oImage.Height
*
intPrintImageWidth
/
oImage.Width);
26
27
}
else
if
(oImage.Height
>
intPrintImageHeight) {
28
intImageWidth
=
Conversion.Int(oImage.Width
*
intPrintImageHeight
/
oImage.Height);
29
intmageHeight
=
intPrintImageHeight;
30
}
else
{
31
intImageWidth
=
oImage.Width;
32
intmageHeight
=
oImage.Height;
33
}
34
35
}
catch
(Exception ex) {
36
throw
(ex);
37
}
finally
{
38
if
(oImage
!=
null
) {
39
oImage.Dispose();
40
oImage
=
null
;
41
}
42
}
43
44
45
}
验证是否图片存在
public
int
GetUrlExistError(
string
url){
int
num
=
0
;
if
(url.Length
>
1
) { HttpWebRequest request
=
(HttpWebRequest)WebRequest.Create(
new
Uri(url)); ServicePointManager.Expect100Continue
=
false
;
try
{ ((HttpWebResponse)request.GetResponse()).Close(); }
catch
(WebException exception) {
if
(exception.Status
!=
WebExceptionStatus.ProtocolError) {
return
num; }
if
(exception.Message.IndexOf(
"
500
"
)
>
0
) {
return
500
; }
if
(exception.Message.IndexOf(
"
401
"
)
>
0
) {
return
401
; }
if
(exception.Message.IndexOf(
"
404
"
)
>
0
) {
return
404
; } } num
=
1
; }
return
num;}
转载于:https://www.cnblogs.com/xiaobuild/archive/2011/06/16/2082795.html
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