Question

VB.net2010按指定字符截取字符串

在VB.net2010中如何按指定字符截取字符串呢？如字符串2012312｝R4561_456}7894321}1234123123}，每个“｝”两边的字符长度不一，需要把各字符串截取出来分别放到文本框中，有会的请指点，谢谢！

Answer 1

Dim str0 As String, idx As Long, str1 As String, str2 As String
str0 = "122012312｝R4561_456}7894321}1234123123}"
idx = str0.IndexOf("}")
Do While idx >= 0
str1 = str0.Substring(0, idx)
str2 = str0.Substring(idx + 1)
'在文本框中添加显示str1、str2,代码略
str0 = str2
idx = str0.IndexOf("}")
Loop

Answer 2

Dim str() As String = "2012312}R4561_456}7894321}1234123123}".Split("}") '以}分割2012312}R4561_456}7894321}1234123123},数组str的元素分别是2012312、R4561_456、7894321、1234123123、“”。

Answer 3

用if语句 + 循环语句 + substring配合length功能 即可。