asp.net mvc webgrid分页

int sum = Respository.getSum();

viewdata["sum"] =sum

viewdata["prevpage"] = Math.Max(page-1,1)

viewdata["nextpage"] = Math.Min(page+1,sum/size==0?1:sum/size)

viewdata["end"] =  sum/size==0?1:sum/size;

 

 

viedata[size]=size;

viedata[start]=sum==0?sum:(page-1)*size+1;

viedata[size]=Math.min(sum,page*size)

 

<a href="#" onclick="javascript:changelist(@viewdata["prevpage"] ,@viedata[size])">$lt;</a>

 

 

fucntion changelist(page.size)

{

var loc=$("location option:selected").text();

....

windows.location.hret="..../c/a/page="+page......;

}