/// <summary>
/// Ajaxes the pager.
/// </summary>
/// <param name="html">The HTML.</param>
/// <param name="options">The options.</param>
/// <param name="options">The options.</param>
/// <returns></returns>
public static string AjaxPager(this HtmlHelper html, PagingOption pagingOptions, AjaxPaginationOption ajaxOptions)
{
var param = html.ViewContext.HttpContext.Request.Form;
// merge data of ajax pagination option and request
var data = new RouteValueDictionary(ajaxOptions.Data);
if (ajaxOptions.AutoLoadParam == true)
{
foreach (var key in param.AllKeys)
{
if (key != null && !data.ContainsKey(key))
{
data.Add(key, param[key]);
}
}
}
int firstPage = 1;
var before = (int)Math.Ceiling((double)(pagingOptions.PageSize / 2));
var after = pagingOptions.PageSize - before;
var startPage = Math.Max(1, pagingOptions.CurrentPage - before);
int lastPage = (int)Math.Ceiling((double)(pagingOptions.TotalRows) / (double)(pagingOptions.PageSize));
var endPage = Math.Min(lastPage, pagingOptions.CurrentPage + after);
var dataObj = Json.Decode <Object>(Json.EncodeDictionary(data));
// autload htmlID
var HtmlID = ajaxOptions.HtmlID;
if (ajaxOptions.AutoLoadHtmlID == true && param["HtmlID"] != null)
{
HtmlID = param["HtmlID"];
}
string hiddenRefresh = html.ButtonToRemote("", "cmdRefresh", new RemoteOption {
URL = pagingOptions.UrlMaker(pagingOptions.CurrentPage), Update = HtmlID, Data = dataObj
}, new { style = "display:none" });
if (pagingOptions.TotalRows <= pagingOptions.PageSize)
{
return(hiddenRefresh);
}
var ret = new List <String>();
//pager.LinkPattern = linkPagePattern;
string currentLinkPattern = "<b>" + pagingOptions.CurrentPage + "</b>";
// first page
if (pagingOptions.CurrentPage != firstPage)
{
ret.Add(html.LinkToRemote("First", new RemoteOption {
URL = pagingOptions.UrlMaker(firstPage), Update = HtmlID, Data = dataObj
}));
}
// previous page
if (pagingOptions.CurrentPage > 1)
{
ret.Add(html.LinkToRemote("Previous", new RemoteOption {
URL = pagingOptions.UrlMaker(pagingOptions.CurrentPage - 1), Update = HtmlID, Data = dataObj
}));
}
// pages
for (int i = startPage; i <= endPage; i++)
{
if (i == pagingOptions.CurrentPage)
{
ret.Add(currentLinkPattern);
}
else
{
ret.Add(html.LinkToRemote(i.ToString(), new RemoteOption {
URL = pagingOptions.UrlMaker(i), Update = HtmlID, Data = dataObj
}));
}
}
// next page
if (pagingOptions.CurrentPage < endPage)
{
ret.Add(html.LinkToRemote("Next", new RemoteOption {
URL = pagingOptions.UrlMaker(pagingOptions.CurrentPage + 1), Update = HtmlID, Data = dataObj
}));
}
// last page
if (pagingOptions.CurrentPage != lastPage)
{
ret.Add(html.LinkToRemote("Last", new RemoteOption {
URL = pagingOptions.UrlMaker(lastPage), Update = HtmlID, Data = dataObj
}));
}
ret.Add(hiddenRefresh);
return(String.Join(" ", ret.ToArray()));
}
