Hello all, i am changing the model of a grid using the setModel method of the grid and then calling the refresh method to update data.
I have several ItemFileReadStore stores, one of them with more than 500 records, i am creating a new grid model and asigning them one of the stores and then updating the grid with the new model, that process repeats continuously depends on what store is selected in a combobox. after varius grid model changes when i set the model with the store that have 500 records, then the grid show up the first chunk of 20 rows of data after a big white space inside the grid in the place that is supose to be apear the first 20 rows instead.
Sorry for my english, but the question is: what is the best way to change grid model programmaticaly?

Thanks in advance,
Roland.