dynamically building up object array to populate a datagrid

Forum|Forum|17 years ago
March 3, 2009
5 replies
776 views

I am having a difficult time understanding how to push an object to an array to populate a datagrid.
I am not sure if I am not retrieving the values right or sending them.

I want to Push the full string as the label and on : "Data_Grid.selectedItem " retrieve the value by name with "Data_Grid.selectedItem.G_val" by dynamically building up the "type":"Value".

ActionScript

This topic has been closed for replies.

Correct answer

thank you :)

kglad

Community Expert

you're welcome.

(and my 2nd sentence isn't quite correct. the objects don't need to have the same properties. but if you want to display all their properties, there should be a column for each property used.)

A

Anonymous

The project might be something you are intrested in after viewing the examples on your website.

Its a CAD to Flash viewer

http://www.cncscreens.com/GWI/GWI.html

Mouse wheel: zoom
Left click: pan

Yes the object is dynamicaly populating with the column name and value and then pushed to the dataprovider but...only if INDEX 0 has all of the column labels.

So like you said I have to dp.unshift({A:'', B:'', C:''}); to have the values pupulate the columns....but this means I have to keep tabs on the array and figure out all of the column names then "shift" them in to index0.

Since I am loading hundred thousand lines of code in the array I am trying to keep things running as fast as I can, this just added to the load time and complexity.

Example:

Index 0

Column: A B
Value: 1 1

Index 1 !!! this will not work since C wasnt in Index 0

Column: A B C
Value: 2 2 2

I have to "shift" Column: A B C

Basicaly I am bringing in X,Y,Z values but z might be in the middle of the file or not there at all if it is a 2d object.
Other elements to the file might need to be stored and display and vary on the CAD file or type. So it is hard to have a set colum names and values.

kglad

Community Expert

the dataprovider is an array of objects. each element of the array corresponds to a row in the datagrid.

all the objects should have the same properties which correspond to the columns of the datagrid.

you can add datagrid columns at any time using the addColumn() and addColumnAt() methods.

A

Anonymous

Correct answer

thank you :)

kglad

Community Expert

that's the general idea. datagrids generally have header or column values that explain the content type of each row.

you can't however push an ill-defined creation like {Info:myInfo},Obj

try:

A

Anonymous

Thank you KGlad that seems to work well!

However if I do not declare all of the colums in the first index and try to add colums later in the array they are not created.

Example :

index 0 sends: { G: "1" , Y: "1" }
index 1 sends: { H: "2" , X: "2" }

The dataProvider for the dataGrid only creates index 0 :colums |G| |Y| and does not add index 1 : colums |H| |X|
If in the first index I send every colum name they will be populated late, However I will not know till the end of the array how many colums and there names till the end of the loop.

Is there a good way to dynamicaly create colums on the fly or a better way then using an object and the dataprovider?

Currently I am using : dp.unshift({G_val:'', X_val:'', Y_val:''});
but would rather not.

A

Anonymous

Hi Kglad,
thank you for the reply.

If I do that it will fill the colum with the types name and the cell with the value.

I would like to display in one colum in 1 row:
for examlpe:

G1 X0.1031 Y-0.0416

but when the user click on it retrive each value:

Data_Grid.selectedItem.G_val

which would equal: 1

I am not sure how to display a "label" with multiple values behide it...out of site of the user?

kglad

Community Expert

:

dp.push(Obj);

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded