let say currently i dunwan to save the files into .fns extension, and i dunwan to save it as binary, i wanan save every details into the database. then how i can do it?

currently i am creating the data modelling for the flowchart, where i will use the mindfusion component to let the user drag and create flowchart, after the user click on 'save' button, we will save the save inti temp.fns and then convert to binary and save into database.

At the same time, We also given those boxes a tag name and we save down their relationship on temp's array and then store into database (parentID,ChildID) to define their relationship. Let say if someone change the database value (either delete the record or insert more without using the mindfusion component, is it mindfusion able to recreate the flowchart from those relationship nodes??

Hello Mah,

The FlowChart.NET control doesn't know anything about databases, so it can't recreate itself the diagram structure from your data.

If that data can change outside the diagram editor, you might have to store in a table what modifications were done (e.g. Insert, Delete, etc). When the editor runs the next time, perform all the modifications recorded in that table on the flowchart. The table might look like

[ActionsBatch]
ActionName (insert, delete, rename, etc)
ParentNodeId (needed for Insert)
ChildNodeId
etc...

Another possibility is to load the flowchart without showing it on the screen, and perform the actions both on your data and on the flowchart simultaneously.

Btw. you can skip the 'save to temp.fns' step by using SaveToString and store the resulting string in a TEXT or BLOB field, then load the diagram with LoadFromString.

HTH
Stoyan