It is great example....you can learn the concepts there and apply....however you may have to think twice before you implement column adding dynamically....because the technique here is make copy of what we already have and reproduce it as a new item and this technique works great for rows as they all have every thing in common. But when it comes to columns it may have unique visible identity as column head and displaying repeatedly the same column head may not look good. Of-Course you can do few extra lines of code and change the column appearance based on users input each time. Situations where users need to add additional column is very unlikely (sure your requirement might be an exception).
Key in allowing adding/removing instances is managing design mode settings under Object>>Binding>>....and select the checkbox "Repeat <subform/row/...> for Each Data Item" and then set Min, Max and Initial count values.
Also you need to club your effots by using simple scipt with button clicks....
for the example refered in URL you posted following is what I did to make the first table allow Adding/Removing Rows....
1. Opened the form in LC designer.
2. Add two buttons AddRow & RemoveRow right next to RemoveColumn
3. For AddRow I used following JS code....
Table1._Row1.addInstance(1);//that means any time this button is clicked a new instance of Row1 is added use _Row2 or Row3 based on your needs
var fVersion = new Number(xfa.host.version); // this will be a floating point number like "7.05"
if (fVersion < 8.0) // do this for Acrobat versions earlier than 8.0
{
// make sure that the new instance is properly rendered
xfa.layout.relayout();
}
4. For RemoveRow I used following JS code....
Table1._Row1.removeInstance(1);//Syntax is...<objectReference>.removeInstance(<index of the repeating object that needs to be removed>); //in this case since we used 1 alwasys second object from top gets deleted.
var fVersion = new Number(xfa.host.version); // this will be a floating point number like "7.05"
if (fVersion < 8.0) // do this for Acrobat versions earlier than 8.0
{
// make sure that the new instance is properly rendered
xfa.layout.relayout();
}
5. Now time to update settings at Object>>Binding tab and set "Repeat......" and also set Min, Max and Initial count as explained above.
Those settings needs to be updated for Row1 (or your choice of row) of the table
6. Set the Height to Expand of the Subform, where the table is housed.... this is done under Layout pallet
7. Save the PDF as dynamic template and verify the results...
If you still run into issues I can send you copy that works on my machine, but you need send me an email at n_varma(AT)lycos.com
Good luck,
