如何写这句C#的循环代码？

[xboard]

int previousPagesCount = 4;
for (int i = pageNumber - 1; i >= 0 && i >= pageNumber - previousPagesCount; i--)
{
int step = i - pageNumber;
DataRow r = dt.NewRow();
r["html"] = pagingItemHtml(startAt + (maxResults * step), i + 1, true);

dt.Rows.InsertAt(r, 0);
}

int nextPagesCount = 4;
for (int i = pageNumber + 1; i <= pageCount && i <= pageNumber + nextPagesCount; i++)
{
int step = i - pageNumber;
DataRow r = dt.NewRow();
r["html"] = pagingItemHtml(startAt + (maxResults * step), i + 1, true);

dt.Rows.Add(r);
}
看的我怪怪的。第一次看见C#的这种循环代码。想写成VB的。不知道如何下手了

[smoothwood]

dim i as integer=pageNumber-1
do while(i>=0 and i>=pageNumber-previousPagesCount)
.........
i-=1
loop

[一杯清茶几行代码]

for (int i = pageNumber + 1; i <= pageCount && i <= pageNumber + nextPagesCount; i++)
改为
for int i = pageNumber + 1 to i <= pageCount and i <= pageNumber + nextPagesCount

next

[menuvb]

@smoothwood(吾谁与归)
正角

[qpl007]

dim i as integer=pageNumber-1
do while(i>=0 and i>=pageNumber-previousPagesCount)
.........
i-=1
loop

[commandown]

这有什么奇怪的，很正常的写法