C#文件操作简单封装
1
public
class
FileManager
2
{
3
public
bool
IsHidden(
string
path)
4
{
5
FileAttributes attr
=
File.GetAttributes(path);
6
if
(attr.ToString().LastIndexOf(
"
Hidden
"
)
!=
-
1
)
7
return
true
;
8
else
9
return
false
;
10
}
11
12
public
void
Mkdir(
string
dir)
13
{
14
DirectoryInfo info
=
new
DirectoryInfo(dir);
15
if
(
!
info.Exists)
16
info.Create();
17
}
18
///
<summary>
19
///
删除文件及其所有目录
20
///
</summary>
21
///
<param name="dir"></param>
22
///
<param name="delSub"></param>
23
public
static
void
DelAll(
string
dir,
bool
delSub)
24
{
25
foreach
(
string
fileName
in
Directory.GetFiles(dir))
26
{
27
File.SetAttributes(fileName, FileAttributes.Normal);
28
File.Delete(fileName);
29
}
30
if
(delSub)
31
{
32
DirectoryInfo dirInfo
=
new
DirectoryInfo(dir);
33
foreach
(DirectoryInfo sub
in
dirInfo.GetDirectories())
34
{
35
DelAll(sub.FullName,
true
);
36
}
37
}
38
}
39
40
public
static
void
DelDir(
string
dir)
41
{
42
DirectoryInfo dirInfo
=
new
DirectoryInfo(dir);
43
if
(dirInfo.Exists)
44
{
45
DelAll(dir,
true
);
46
dirInfo.Delete(
true
);
47
}
48
}
49
50
public
static
void
DelSubDir(
string
dir)
51
{
52
foreach
(
string
subDir
in
Directory.GetDirectories(dir))
53
{
54
DelDir(subDir);
55
}
56
}
57
58
public
static
void
MoveFiles(
string
src,
string
target,
bool
overWrite,
bool
moveSub)
59
{
60
foreach
(
string
srcFileName
in
Directory.GetFiles(src))
61
{
62
string
targetFileName
=
Path.Combine(target, srcFileName.Substring(srcFileName.LastIndexOf(
"
\\
"
+
1
)));
63
if
(File.Exists(targetFileName))
64
{
65
if
(overWrite)
66
{
67
File.SetAttributes(targetFileName, FileAttributes.Normal);
68
File.Delete(targetFileName);
69
File.Move(srcFileName, targetFileName);
70
}
71
else
72
{
73
File.Move(srcFileName, targetFileName);
74
}
75
}
76
if
(moveSub)
77
{
78
foreach
(
string
srcSubDir
in
Directory.GetDirectories(src))
79
{
80
string
targetSubDir
=
Path.Combine(target, srcSubDir.Substring(srcSubDir.LastIndexOf(
"
\\
"
)
+
1
));
81
if
(
!
Directory.Exists(targetSubDir))
82
{
83
Directory.CreateDirectory(targetSubDir);
84
MoveFiles(srcSubDir, targetSubDir, overWrite,moveSub);
85
}
86
}
87
}
88
}
89
}
90
91
public
static
void
Copy(
string
srcDir,
string
targetDir,
bool
overWrite,
bool
copySub)
92
{
93
foreach
(
string
srcFileName
in
Directory.GetFiles(srcDir))
94
{
95
string
targetFileName
=
Path.Combine(targetDir, srcDir.Substring(srcDir.LastIndexOf(
"
\\
"
)
+
1
));
96
if
(File.Exists(targetFileName))
97
{
98
if
(overWrite)
99
{
100
File.SetAttributes(targetFileName, FileAttributes.Normal);
101
File.Copy(srcFileName, targetFileName, overWrite);
102
}
103
104
}
105
else
106
{
107
File.Copy(srcFileName, targetFileName, overWrite);
108
}
109
}
110
if
(copySub)
111
{
112
foreach
(
string
srcSubDir
in
Directory.GetDirectories(srcDir))
113
{
114
string
targetSubDir
=
Path.Combine(targetDir, srcSubDir.Substring(srcSubDir.LastIndexOf(
"
\\
"
)
+
1
));
115
if
(
!
Directory.Exists(targetSubDir))
116
{
117
Directory.CreateDirectory(targetSubDir);
118
Copy(srcSubDir, targetSubDir, overWrite,
true
);
119
}
120
}
121
}
122
}
123
124
public
static
string
GetChildFileInfo(
string
dir)
125
{
126
StringBuilder sb
=
new
StringBuilder();
127
sb.Append(
"
{
"
);
128
try
129
{
130
foreach
(
string
fileName
in
Directory.GetFiles(dir))
131
{
132
FileInfo fileInfo
=
new
FileInfo(fileName);
133
string
name
=
fileName.Substring(fileName.LastIndexOf(
"
\\
"
)
+
1
);
134
string
addr
=
fileName;
135
string
size
=
fileInfo.Length.ToString();
136
string
createTime
=
fileInfo.CreationTime.ToString();
137
sb.Append(
"
{name:
"
+
name);
138
sb.Append(
"
,addr:
"
+
addr);
139
sb.Append(
"
,size:
"
+
size);
140
sb.Append(
"
,createTime:
"
+
createTime);
141
sb.Append(
"
},
"
);
142
//
generate a tree
143
}
144
foreach
(
string
subDir
in
Directory.GetDirectories(dir))
145
{
146
GetChildFileInfo(subDir);
147
}
148
}
149
catch
(Exception ex)
150
{
151
152
}
153
if
(sb.Length
>
2
)
154
sb.Remove(sb.Length
-
1
,
1
);
155
sb.Append(
"
}
"
);
156
return
sb.ToString();
157
}
158
///
<summary>
159
///
HW变形,W按宽度成比例,H按高度成比例,Cut不变形
160
///
</summary>
161
public
enum
ImageCutMode
162
{
163
HW,
//
HW变形
164
W,
//
W按宽度成比例
165
H,
//
H按高度成比例
166
Cut
//
Cut不变形
167
}
168
169
public
static
MemoryStream CutImage(Image oImage,
int
width,
int
height, ImageCutMode mode)
170
{
171
Image originalImage
=
oImage;
172
MemoryStream ms
=
new
MemoryStream();
173
174
int
towidth
=
width;
175
int
toheight
=
height;
176
177
int
x
=
0
;
178
int
y
=
0
;
179
int
ow
=
oImage.Width;
180
int
oh
=
oImage.Height;
181
182
switch
(mode)
183
{
184
case
ImageCutMode.HW:
//
指定高宽缩放（可能变形）
185
break
;
186
case
ImageCutMode.W:
//
指定宽，高按比例
187
toheight
=
oh
*
width
/
ow;
188
break
;
189
case
ImageCutMode.H:
//
指定高，宽按比例
190
towidth
=
ow
*
height
/
oh;
191
break
;
192
case
ImageCutMode.Cut:
//
指定高宽裁减（不变形）
193
if
((
double
)ow
/
(
double
)oh
>
(
double
)towidth
/
(
double
)toheight)
194
{
195
ow
=
oh
*
towidth
/
toheight;
196
y
=
0
;
197
x
=
(oImage.Width
-
ow)
/
2
;
198
}
199
else
200
{
201
oh
=
ow
*
height
/
towidth;
202
x
=
0
;
203
y
=
(oImage.Height
-
oh)
/
2
;
204
}
205
break
;
206
default
:
207
break
;
208
}
209
210
//
新建一个bmp图片
211
Image bitmap
=
new
System.Drawing.Bitmap(towidth, toheight);
212
213
//
新建一个画板
214
Graphics g
=
System.Drawing.Graphics.FromImage(bitmap);
215
216
//
设置高质量插值法
217
g.InterpolationMode
=
System.Drawing.Drawing2D.InterpolationMode.High;
218
219
//
设置高质量,低速度呈现平滑程度
220
g.SmoothingMode
=
System.Drawing.Drawing2D.SmoothingMode.HighQuality;
221
222
//
清空画布并以透明背景色填充
223
g.Clear(Color.Transparent);
224
225
//
在指定位置并且按指定大小绘制原图片的指定部分
226
g.DrawImage(originalImage,
new
Rectangle(
0
,
0
, towidth, toheight),
227
new
Rectangle(x, y, ow, oh),
228
GraphicsUnit.Pixel);
229
230
try
231
{
232
//
以jpg格式保存缩略图
233
bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
234
}
235
catch
(System.Exception e)
236
{
237
throw
e;
238
}
239
finally
240
{
241
originalImage.Dispose();
242
bitmap.Dispose();
243
g.Dispose();
244
}
245
return
ms;
246
}
247
248
public
static
MemoryStream ZoomImage(
byte
[] buffer,
int
width,
int
height, ImageCutMode mode)
249
{
250
MemoryStream ms
=
new
MemoryStream();
251
ms.Write(buffer,
0
,buffer.Length);
252
Image oImage
=
Image.FromStream(ms);
253
MemoryStream outms
=
CutImage(oImage, width, height, ImageCutMode.HW);
254
return
outms;
255
}
256
257
/**/
258
///
<summary>
259
///
生成缩略图
260
///
</summary>
261
///
<param name="originalImagePath">
源图路径（物理路径）
</param>
262
///
<param name="thumbnailPath">
缩略图路径（物理路径）
</param>
263
///
<param name="width">
缩略图宽度
</param>
264
///
<param name="height">
缩略图高度
</param>
265
///
<param name="mode">
生成缩略图的方式
</param>
266
public
static
void
MakeThumbnail(
string
originalImagePath,
string
thumbnailPath,
int
width,
int
height, ImageCutMode mode)
267
{
268
Image originalImage
=
Image.FromFile(originalImagePath);
269
270
int
towidth
=
width;
271
int
toheight
=
height;
272
273
int
x
=
0
;
274
int
y
=
0
;
275
int
ow
=
originalImage.Width;
276
int
oh
=
originalImage.Height;
277
278
switch
(mode)
279
{
280
case
ImageCutMode.HW:
//
指定高宽缩放（可能变形）
281
break
;
282
case
ImageCutMode.W:
//
指定宽，高按比例
283
toheight
=
originalImage.Height
*
width
/
originalImage.Width;
284
break
;
285
case
ImageCutMode.H:
//
指定高，宽按比例
286
towidth
=
originalImage.Width
*
height
/
originalImage.Height;
287
break
;
288
case
ImageCutMode.Cut:
//
指定高宽裁减（不变形）
289
if
((
double
)originalImage.Width
/
(
double
)originalImage.Height
>
(
double
)towidth
/
(
double
)toheight)
290
{
291
oh
=
originalImage.Height;
292
ow
=
originalImage.Height
*
towidth
/
toheight;
293
y
=
0
;
294
x
=
(originalImage.Width
-
ow)
/
2
;
295
}
296
else
297
{
298
ow
=
originalImage.Width;
299
oh
=
originalImage.Width
*
height
/
towidth;
300
x
=
0
;
301
y
=
(originalImage.Height
-
oh)
/
2
;
302
}
303
break
;
304
default
:
305
break
;
306
}
307
308
//
新建一个bmp图片
309
Image bitmap
=
new
System.Drawing.Bitmap(towidth, toheight);
310
311
//
新建一个画板
312
Graphics g
=
System.Drawing.Graphics.FromImage(bitmap);
313
314
//
设置高质量插值法
315
g.InterpolationMode
=
System.Drawing.Drawing2D.InterpolationMode.High;
316
317
//
设置高质量,低速度呈现平滑程度
318
g.SmoothingMode
=
System.Drawing.Drawing2D.SmoothingMode.HighQuality;
319
320
//
清空画布并以透明背景色填充
321
g.Clear(Color.Transparent);
322
323
//
在指定位置并且按指定大小绘制原图片的指定部分
324
g.DrawImage(originalImage,
new
Rectangle(
0
,
0
, towidth, toheight),
325
new
Rectangle(x, y, ow, oh),
326
GraphicsUnit.Pixel);
327
328
try
329
{
330
//
以jpg格式保存缩略图
331
bitmap.Save(thumbnailPath, System.Drawing.Imaging.ImageFormat.Jpeg);
332
}
333
catch
(System.Exception e)
334
{
335
throw
e;
336
}
337
finally
338
{
339
originalImage.Dispose();
340
bitmap.Dispose();
341
g.Dispose();
342
}
343
}
344
345
public
static
MemoryStream WaterPrint(MemoryStream ms,
string
word, PointF pos)
346
{
347
MemoryStream outms
=
new
MemoryStream();
348
Image img
=
Image.FromStream(ms);
349
Graphics g
=
Graphics.FromImage(img);
350
g.DrawImage(img,
0
,
0
, img.Width, img.Height);
351
Font f
=
new
Font(
"
Verdana
"
,
16
);
352
Brush b
=
new
System.Drawing.SolidBrush(Color.Blue);
353
g.DrawString(word, f, b,pos);
354
img.Save(outms, System.Drawing.Imaging.ImageFormat.Jpeg);
355
img.Dispose();
356
return
outms;
357
}
358
}
359