/// <summary>
/// Check the argument.
/// </summary>
/// <param name="pagedList">The paged list to be checking.</param>
/// <exception cref="ArgumentNullException">The <paramref name="pagedList" /> is null.</exception>
private static void CheckArgument(IDynamicPagedList pagedList)
{
if (pagedList == null)
{
throw new ArgumentNullException(nameof(pagedList));
}
}
/// <summary>
/// Check the argument.
/// </summary>
/// <param name="pagedList">The paged list to be checking.</param>
/// <exception cref="ArgumentNullException">The <paramref name="pagedList" /> is null.</exception>
private static void CheckArgument(IDynamicPagedList pagedList)
{
if (pagedList == null)
{
throw new ArgumentNullException(nameof(pagedList));
}
}
/// <summary>
/// Move the paged list to the next page.
/// </summary>
/// <param name="pagedList">The paged list to be moving.</param>
/// <returns>
/// If the operation is successful, returns <c>true</c>; If the paged list is already in the last page, return
/// <c>false</c>.
/// </returns>
/// <exception cref="ArgumentNullException"><paramref name="pagedList" /> is null.</exception>
public static bool GoToNextPage(this IDynamicPagedList pagedList)
{
CheckArgument(pagedList);
if (pagedList.IsLastPage())
{
return(false);
}
pagedList.PageIndex++;
return(true);
}
/// <summary>
/// Move the paged list to the previous page.
/// </summary>
/// <param name="pagedList">The paged list to be moving.</param>
/// <returns>
/// If the operation is successful, returns <c>true</c>; If the paged list is already in the first page, return
/// <c>false</c>.
/// </returns>
/// <exception cref="ArgumentNullException"><paramref name="pagedList" /> is null.</exception>
public static bool GoToPreviousPage(this IDynamicPagedList pagedList)
{
CheckArgument(pagedList);
if (pagedList.IsFirstPage())
{
return(false);
}
pagedList.PageIndex--;
return(true);
}
/// <summary>
/// Move the paged list to the last page.
/// </summary>
/// <param name="pagedList">The paged list to be moving.</param>
/// <exception cref="ArgumentNullException"><paramref name="pagedList" /> is null.</exception>
public static void GoToLastPage(this IDynamicPagedList pagedList)
{
CheckArgument(pagedList);
pagedList.PageIndex = pagedList.TotalPage - 1;
}
/// <summary>
/// Move the paged list to the first page.
/// </summary>
/// <param name="pagedList">The paged list to be moving.</param>
/// <exception cref="ArgumentNullException"><paramref name="pagedList" /> is null.</exception>
public static void GoToFirstPage(this IDynamicPagedList pagedList)
{
CheckArgument(pagedList);
pagedList.PageIndex = 0;
}
