download pdf file from folder in asp.net c#: Adding metadata to pdf application software utility azure windows .net visual studio forensic-explorer-user-guide.en8-part1500

Ch a p t e r 8 - D a t a V i e w s

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Navigate sectors using the arrow keys

First and last sectors are reached using the

home and end keys:

Pages of sectors can be scrolled using the

Page Up or Page Down keys.

Mouse Scroll

Scroll by row using the mouse. Hold down the

SHIFT key to scroll by page.

Or use the following keyboard shortcuts to go to:

Next deleted file

Entry

Free Space

Next File

Ctrl N

Next different type

Previous file

Ctrl P

Previous different type

System

Unallocated

DISK VIEW GOTO

Disk view has a Goto command that allows the investigator to quickly jump to the

desired sector.

To open and use the Goto window:



Right mouse click in the Disk view;



The following window will appear;

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Figure 55, Disk view Goto window



In the ͞Offset field, enter the required sector, the press the Go button.

8.4.4

SELECTING DATA IN DISK VIEW

To select a sector:



Click on a sector with the mouse. The selected sector will be marked with a

red border.

To select a range of sectors:



Click on a sector with the mouse;



Hold down the mouse key and drag the mouse over the required range of

sectors. The range of sectors will show as selected, as see Figure 56 below.

This enables other views, such as HEX view to see the selected range;

Figure 56, Selecting a range of sector in Disk view

To select a file:



Double click a sector. All sectors used by the file will be identified;

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

The name of the selected file is displayed in the status bar at the bottom of

the Disk view window, as shown in Figure 57 below;

Figure 57, A selected file in Disk view

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Ch a p t e r 8 - D a t a V i e w s

8.5

GALLERY VIEW

The default location for Gallery view is the top data view window of the File System

module, accessed via the Gallery View tab:

Gallery view is fast ways to thumbnail graphics located in the case.

Figure 58, Gallery view thumbnails

Graphics displayed in Gallery view are determined by the selection made in the Tree

view. If a single folder is highlighted, the graphics inside that folder will be displayed.

When the branch plate option is used (see paragraph 8.2.3 - Branch plate) all graphics

in the plated path will be displayed.

The default setting for Gallery view is to display Jpeg, Bmp and Png file types.

The file icon at the bottom of the thumbnail is a visual identifier of the status of the

file (e.g. bookmarked, deleted, carved, etc.).

8.5.1

CACHING THUMBNAILS TO DISK

When a thumbnail is displayed it is written to the disk cache file:

…\User\Documents\Forensic Explorer\Cases\[Case Name]\thumb.cache

When changing between Gallery view folders, Forensic Explorer first checks the cache

file to determine if the graphic has previously been displayed. If so, the cached graphic

is used.

In some situations it may be advantageous to cache all available images. For example,

if running the ͞Skin Tone Analysis͟ script (from File System module > Analysis Scripts

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Ch a p t e r 8 - D a t a V i e w s

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button > Skin Tone Analysis) the script will run 50% faster when reading images from

the cache.

To cache all thumbnails to disk:

When adding evidence:

When an evidence item is added to a preview or a case, there is an

opportunity in the Evidence Processor window (see 10.5) to ͞ ache

Thumbnails͟.

During a case:

Select or branch plate the required folders in the File System

module.

Right click in the gallery view window and select ͞ ache All Images͟.

The cache progress will show in the processes window.

8.5.2

INCREASE THE NUMBER OF GRAPHICS DISPLAYED

The size and number of graphics displayed is controlled by moving the slide-bar in the

footer of this window from small to large.

Figure 59, Gallery view scale bar

The Gallery view tab can also be detached from the File List view pane and re-sized

displayed as a standalone window (see 7.3.1- Save a custom layout, for more

information).

8.5.3

WORKING WITH DATA IN GALLERY VIEW

Graphics in Gallery view can be highlighted, checked, flagged, exported, bookmarked

and opened with an external application. These commands are access by the right

click display menu. For more information on these actions, see Chapter 9 - Working

with data.

To highlight a continuous group of multiple files in Gallery view, hold down the SHIFT

key whilst selection files with the mouse.

To highlight a non-contiguous group of multiple files in Gallery view, use the CTRL key

when selecting files with the mouse.

To check highlighted files, press the space bar.

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Ch a p t e r 8 - D a t a V i e w s

8.6

HEX VIEW

The default location of the Hex view window is the bottom data view window,

accessed via the Hex tab:

Hex view shows a hexadecimal/ASCII view of the currently highlighted item. The slide

bar to the right of the hex/ASCII windows separates the data inspector. Data

highlighted in hex view is automatically analyzed in the data inspector to determine its

type:

Figure 60, Hex view and data inspector

The right-click menu in the Hex view provides options to select and copy Hex. It also

allows investigators to:



Add bookmark: Highlight a selection of Hex and bookmarked it. See Chapter

16 - Bookmarks Module, for more information.



Carve Selection: Highlight a selection of Hex and carve this data and add it to

the File System module as a file. When this option is selected, the following

window appears:

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Figure 61, Carving files from Hex view

Name: The default name is the Hex Offset and the length of the selection in bytes. The

default name can be edited.

Available Folders: This is the folder name in File System Folders view which will hold

the carved file. A new folder can be added as required.

Bookmark: Adds the carved file to the Bookmarks module.

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Ch a p t e r 8 - D a t a V i e w s

8.7

TEXT VIEW

The default location for the Text view window is the bottom data view window,

accessed via the Text tab:

Figure 62, Text view tab

The Text tab shows the highlighted item as ASCII text.

Figure 63, Text view

Ch a p t e r 8 - D a t a V i e w s

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8.8

DISPLAY VIEW

The default location of the Display view window is the bottom data view window,

accessed via the Display tab:

Figure 64, Display view tab

The File Display tab uses GetData͛s Explorer View technology to display the content of

hundreds of different file types:

Figure 65, Display view

Note that the file Display tab is NOT intended as an exact render of how the file would

have appeared to the end user. If this is the objective, it is best achieved by exporting

the file and opening it with the same application available to the end user.

If a file type is selected where a display is not available, or the file is corrupt, an error

message will display in this window. The display view will default to Hex or Text view.

Right click on the image to display the options menu:

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Ch a p t e r 8 - D a t a V i e w s

Figure 66, Display view right-click menu

The following buttons are displayed for audio and video files

8.8.1

VIDEO THUMBNAILS

When viewing a video, it is possible to thumbnail the video by click on the thumbnail

icon in the bottom right hand corner of the display window, as shown in Figure 67

below:

Figure 67, Video Thumbnails

To jog image thumbnails, click on the jog button.

To play all thumbnails, click on the play button.

To play in full screen from a specific thumbnail, double click the thumbnail.

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download pdf file from folder in asp.net c# : Adding metadata to pdf application software utility azure windows .net visual studio forensic-explorer-user-guide.en8-part1500