Access photos in AD

Is there a field for storing photos in ad?
The answer must be yes, photo, jpegphoto, and thumbnailphoto.

The front-end customers, including the leaders, asked why the photos in the address book exist in the Database rather than in the ad. Can the attributes in the ad be used?
I think it is not recommended to store large volumes of data such as photos on the ad end if there are a large number of users. Otherwise, why does Microsoft's ad manager have no photo management items?

But now that the leader asks, verify it ..

1
2 // Obtains the object of the user object to be modified.
3 Private Directoryentry getdirectoryentryby ( String Samaccountname)
4 {
5 String Path = " LDAP: // pcdc01.company.com/ouyun Shanghai xxsoftware Co., Ltd., dc1_company,dc1_com " ;
6 Directoryentry rootde =   New Directoryentry (path, " Userid " , " PWD " ); // Access user
7 Directorysearcher DS =   New Directorysearcher (rootde );
8 DS. searchscope = Searchscope. subtree;
9 DS. Filter =   " (& (Objectcategory = person) (objectclass = user) (samaccountname = "   + Samaccountname +   " )) " ;
10 Searchresult SR = DS. findone ();
11 If (SR ! =   Null )
12 {
13 Return Sr. getdirectoryentry ();
14 }
15 Else  
16 {
17 Return   Null ;
18 }
19 }

1 // BelowCodeIs to retrieve images from AD
2
3 String Account =   This . Tbaccount. text;
4 If (Account =   "" )
5 {
6 MessageBox. Show ( " Enter an account " );
7 Return ;
8 }
9 Directoryentry de = Getdirectoryentryby (account );
10 If (De =   Null )
11 {
12 MessageBox. Show ( " Invalid account " );
13 Return ;
14 }
15 String Photocol =   This . Cbbphotocol. text; // Select one of the three fields to access the photo.
16
17 System. directoryservices. propertyvaluecollection PVC = De. properties [photocol];
18 If (PVC. Value ! =   Null   && PVC. Value Is   Byte [])
19 {
20 Byte [] = ( Byte []) PVC. value;
21 Memorystream stream =   New Memorystream ();
22 This . Pbcontainer. Image = Image. fromstream (Stream );
23 }
24 Else
25 {
26 MessageBox. Show ( " False " );
27 } 1  
2 Save the photo to AD
3
4 String Account =   This . Tbaccount. text;
5 If (Account =   "" )
6 {
7MessageBox. Show ("Enter an account");
8Return;
9}
10
11 String CC =   This . Textbox1.text;
12 If (CC =   "" )
13 {
14MessageBox. Show ("Select Image");
15}
16 Else
17 {
18 Image im = Image. fromfile (CC );
19 Memorystream stream =   New Memorystream ();
20 Im. Save (stream, system. Drawing. imaging. imageformat. JPEG );
21 Byte [] Bb = Stream. getbuffer ();
22 Directoryentry de = Getdirectoryentryby ( This . Tbaccount. Text );
23 If (De =   Null )
24 {
25MessageBox. Show ("Invalid account");
26Return;
27}
28 String Photocol =   This . Cbbphotocol. text;
29 System. directoryservices. propertyvaluecollection PVC = De. properties [photocol];
30 PVC. Value = BB;
31 De. commitchanges ();
32 MessageBox. Show ( " Updated " );
33 }