problem with tableview when view a large number of data

[AmrCoder]

I use a table view to view my item using QStandarditemModel and QStandareditem the I have 6230 row and 5 column I view it in the table it works fine but the problem start when I use this code to stretch the horizontal and fit to the content of vertical

void Quran::Extend()
{
    int gg = ui->tableView->horizontalHeader()->count();
    int ff = ui->tableView->verticalHeader()->count();
    for (int c = 0; c < gg; ++c)
    {
        ui->tableView->horizontalHeader()->setSectionResizeMode(c, QHeaderView::Stretch);
    }
    for (int i = 0; i < ff; i++) {
        ui->tableView->verticalHeader()->setSectionResizeMode(i, QHeaderView::ResizeToContents);
    }
}

i try this too

 ui->tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
 ui->tableView->verticalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);

but when i use this part of code it take about 15 second to view the model so i ask if theres a better (efficient) way to view this large number of data with this properties strecthed and resized to content of horizontal and vertical
thanks in advance

[sierdzio]

Three ideas (all can be combined, even):

• while populating the view initially, store data on how wide and tall your cells should be (example: int maxWidth = qMax(maxWidth, currentCellWidth);), then use that number to manually set each column width and row height
• only calculate row and column dimensions for visible items. It's unlikely your users will need to see all 6230 rows at once
• use lazy initialization to only load parts of the data (see canFetchMore() and fetchMore() methods in Qt's abstract model classes)

[AmrCoder]

Thank you @sierdzio I solve this with the first one I calculate the maximum column length and width and set all a fixed width and column it loads the table view with 6230 row in 1 second