how to use entity framework insert data in parent child relationship dynamically

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i have data like

country state   city   pincode
 india   AP     Hyd     500001

now i can insert this as

id parentid   valtype  valtext
1    null       country  india
2    1          State     AP
3    2          City     Hyd
4    3         Pincode     500001

but i am unable to do this dynamically like if one more column is added to data like

country state   city   pincode    FamousPlace
 india   AP     Hyd     500001        Charminar

C#

<pre>
   id parentid   valtype  valtext
   1    null       country  india
   2    1          State     AP
   3    2          City     Hyd
   4    3         Pincode     500001
   5    4         FamousPlace   Charminar

</pre>

so how can i to do this please tell me the approach

Posted 7-Jan-16 0:58am

Prasad Billupati

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Nathan Minier 7-Jan-16 7:34am

It depends entirely on how your table is mapped. You can either add a child to an existing row, or add an existing row as a parent to a new one. Without knowing your mapping mechanism, there's not much that anyone will be able to tell you.

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Yasithl · Answer 1 · 2016-01-07T04:54:00

First you should design the database properly (normalize) to have different types of tables with proper relationships

eg: Country Table, State Table
Relationship between country table and state table should be 1 : M (Many)

Then when you generate your EF data model, you should be able to add values easily for parent (country) and child (state) within the same transaction. It should be similar to below code sample.

Country c = new Country(){
    	name = "india"
    };
    
    State s = new State(){
    	state = "AP"
    };
    
    c.States.Add(s);
    
    DataContext.Countries.Add(c);
    DataContext.SaveChanges();