你如何解析vb6中的字符串？

Dim str1 As String
Dim str2 As String
Dim result As String

str1 = "Hello"
str2 = "World"
result = str1 & " " & str2

Dim str As String
Dim length As Integer

str = "Hello World"
length = Len(str)

Dim str As String
Dim subStr As String

str = "Hello World"
subStr = Mid(str, 1, 5) ' 截取前5个字符

Dim str As String
Dim subStr As String
Dim position As Integer

str = "Hello World"
subStr = "World"
position = Instr(str, subStr) ' 返回子字符串的位置

Dim str As String
Dim oldStr As String
Dim newStr As String
Dim result As String

str = "Hello World"
oldStr = "World"
newStr = "VB6"
result = Replace(str, oldStr, newStr) ' 返回替换后的字符串