dynamic data - all option in paging

Question

I'm developing a dynamic data web app. On list.aspx page it has GridViewPager control for paging, it option in drop down list as 10,20,.. rows in a page like that, but it does not an option show all rows in a page. How I can add "All" option in it?

Answer 1

In content folder Dynamic Data site lies the code for GridViewPager control.

What I have done is I added "All" option in dropdown list with values 0, and in the code behind file in function DropDownListPageSize_SelectedIndexChanged I check if selected value is 0 then set AllowPaging = false else true.

protected void DropDownListPageSize_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (_gridView == null)
        {
            return;
        }
        DropDownList dropdownlistpagersize = (DropDownList)sender;
        int sz=Convert.ToInt32(dropdownlistpagersize.SelectedValue);
        //_gridView.PageSize = Convert.ToInt32(dropdownlistpagersize.SelectedValue);
        if (sz<=0)
        {
            _gridView.AllowPaging = false;
            //_gridView.DataBind();
            //return;
        }
        else
        {
            _gridView.AllowPaging = true;
            _gridView.PageSize = sz;
            _gridView.AllowPaging = true;
        }
        int pageindex = _gridView.PageIndex;
        _gridView.DataBind();
        if (_gridView.PageIndex != pageindex)
        {
            //if page index changed it means the previous page was not valid and was adjusted. Rebind to fill control with adjusted page
            _gridView.DataBind();
        }
    }