asp判断字段为空与不为空

显示全部楼层 · 2010-4-4 18:12:19

If (条件1) thenElseIf(条件2) then……ElseIf(条件n) thenElseEnd If所以改一下就可以了If (字段1"") and (字段2"") Then Response.write 3ElseIf (字段1="") and (字段2="") Then Response.write 0ElseIf 字段"" then Response.write 1Else Response.write 2End if 另外判断字符串是否为空，不建议用字符去比较，这样效率比较低，可以用len去比较:If Len(字段1) = 0 Then MsgBox "字段1为空"

千问 · 2010-4-4 18:12:19

-------------------------------------if 字段1"" thenresponse.Write"1"end ifif 字段2"" thenresponse.Write"2"end ifif 字段1"" and 字段2"" thenresponse.write "3"end ifif 字段1="" and 字段2="" thenresponse.write "3"end if___________________________________________还可以这样if 字段1"" thenresponse.Write"1"elseif 字段2"" thenresponse.Write"2"elseif 字段1"" and 字段2"" thenresponse.write "3"elseif 字段1="" and 字段2="" thenresponse.write "3"end if

千问 · 2010-4-4 18:12:19

语法写错了吧if 字段1"" and 字段2"" thenresponse.Write "3"elseif 字段1="" and 字段2="" thenresponse.Write "0"elseif 字段1"" thenresponse.Write "1"elseif 字段2"" thenresponse.Write "2"end if