Use this module to import AutoCAD or IntelliCAD blocks into Block Explorer .Net libraries.
The Block Explorer .Net Select Source wizard provides three methods you can chose to import blocks into Block Explorer .Net:

1. Folder Structure
Click the Next button to select the source folder.
Block Collector will pre-process selected folder with all subfolders and dwg files. A selection is displayed as a folder tree in the left pane.
Block Collector will try to determine Destination and will prompt user to confirm it. Destination folder is determined based on the selected folder.
Click on a folder in Selected Folders pane to start block collection.
If you want Block Collector to include all folders, click top folder.
If top folder doesn’t contain any blocks click on
button to start collection of subsequent folders.
Otherwise click on any folder to begin the collection process.
You can interrupt collection process at any time by clicking
button.
To finish collecting selected folder, click the folder again.
To resume collecting whole tree, select top node (in our example Pipe Fittings) and click
button.
If you decide to exit Block Collector and not all selected blocks were collected, you will be prompted:

When Block Collector is opened next time and the same folder is selected as source, you may choose to continue from the last place at which the previous process was interrupted. 
2. Dwg Files
Click the Next button to select block files from desired folder.
To select multiple files click on a first file and then use Shift + Click on the last file. To deselect a file, Ctrl + Click on it.
Block Collector will pre-process selected files and display their status.
Select Destination folder and click
button to start block collection.
3. Current Drawing
When the Next button is clicked, Block Collector pre-processes the current drawing and displays all blocks found.
Select Destination folder and click
button to start block collection.