grdView.DataSource = Select().Skip(pageSize * (start - 1)).Take(rows).ToList();
这个分页性能上并不高
下面是我的分页
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public
static
IList<T> PaginationDataSource<T>(IList<T> list,
int
pageIndex,
int
pageSize,
out
int
totals)
{
totals = 0;
if
(pageIndex < 0)
throw
new
ArgumentException(
"pageIndex必须大于0"
);
if
(pageSize <= 0)
throw
new
ArgumentException(
"pageSize必须大于0"
);
totals = list.Count;
int
rowBegin = (pageIndex - 1) * pageSize >= totals ? 0 : (pageIndex - 1) * pageSize;
int
rowEnd = rowBegin + pageSize - 1 >= totals ? totals : rowBegin + pageSize - 1;
IList<T> result =
new
List<T>();
for
(
int
i = rowBegin; i < rowEnd; i++)
{
result.Add(list[i]);
}
return
result;
}
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经测试
我的方法大概 0.000061
Linq 的 skip take 0.000561
比我的方法 慢10倍