While searching through the forum I found this thread giving me a hint what I was doing wrong

/blog/?page_id=393/treegrid/treegrid-20-rows-limit/

I had to set the rowNum attribute to a higher value to display the missing records.

In case of my example rowNum was 8, limiting the number of records that could be loaded per request.

Since I'm not the first one to run into this, I would consider to update the TreeGrid Documentation and give a hint that even in TreeGrid Mode the rowNum attribute limits the number of records that can be loaded.

Greetings Carlo

A TreeGrid with Adjacency Model like this

[+] Root

has to be expanded to this Tree just by expanding the Root element:

[-] Root

|        [-] Branch 1

|        |       [+] Branch 1.2

|        `       Leaf 1.1

|        [-] Branch 2

|        |        Leaf 2.1

|        `       Leaf 2.2

`        [-] Branch 3

  |        Leaf 3.1

  `       Leaf 3.2

Note that the contents of the branches are loaded in one request.

{

"rows":[

{"id":"B1","cell":["Branch 1",1,"0",false,true]}

{"id":"B12″,"cell":["Branch 1.2",2,"B1",false,false]}

{"id":"L11″,"cell":["Leaf 1.1",2,"B1",true,false]}

{"id":"B2″,"cell":["Branch 2",1,"0",false,true]}

{"id":"L21″,"cell":["Leaf 2.1",2,"B2",true,false]}

{"id":"L22″,"cell":["Leaf 2.2",2,"B2",true,false]}

{"id":"B3″,"cell":["Branch 3",1,"0",false,true]}

{"id":"L31″,"cell":["Leaf 3.1",2,"B3",true,false]}

{"id":"L32″,"cell":["Leaf 3.2",2,"B3",true,false]}

]

}

The result I'm getting is the following:

[-] Root

|        [-] Branch 1

|        |       [+] Branch 1.2

|        `       Leaf 1.1

|        [-] Branch 2

|        |        Leaf 2.1

|        `       Leaf 2.2

`        [-] Branch 3

  |        Leaf 3.1

  `       Leaf 3.2 <—– MISSING

Is the adjacency model not suited for loading more than one level at the Time or is this a Bug?

Greetings Carlo

EDIT: I'm using JQGrid 3.8.2