Double.ToString如何指定小数点后的精度

[wangjingjing390]

double i = 1.123456
我想让i.Tostring()返回1.12
请问怎么实现阿

[ice226]

i.ToString("0.00");

[lovefootball]

用Math.Round

[kkkuuu]

int tmp_lbl_filesize = int.Parse(gdl.GetDirectoryLength(fpath).ToString());
double tmp_lbl_filesize_db = ((double)tmp_lbl_filesize)/1048576;
string tmp_lbl = tmp_lbl_filesize_db.ToString("f2");
lbl_filesize.Text = tmp_lbl.ToString();

double tmp_lbl_leave = 100 - double.Parse(tmp_lbl);
lbl_leave.Text = tmp_lbl_leave.ToString();