字符串截取vb.net 字符串截取js

Vb.net 字符串截取{“Xm”字符串截取vb.net:“李明”字符串截取vb.net,“Dh”:“123456”,“Nl”:“30”}这是个JSON串,在序列化后 , 可以得到值 。你可以使用System.Web.Script.Serialization.JavaScriptSerializer类来完成任务 。也可以利用第三方工具比如:Newtonsoft.Json.dll等,来完成任务 。
如何使用System.Web.Script.Serialization.JavaScriptSerializer类或第三方工具,网上有大量代码 , 或参阅微软在线帮助 。这里就不贴字符串截取vb.net了 。
字符串截取 vb.net实现Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim result As String = ""
Dim str As String = TextBox1.Text
Dim substr As String
Dim split() As Char = { "+"}
For Each substr In str.Split(split)
result += substr + ControlChars.CrLf
Next
TextBox2.Text = result
End Sub
上面的代码你试一下 , 可以根据加号来提取出每一个数字 , 这就是你所要求的核心代码,其余的自己琢磨,呵呵!
vb.net怎么提取字符串?在VB中是这样字符串截取vb.net的字符串截取vb.net,没学过VB.net,字符串截取vb.net你变换一下就可以了
按你说的 , 用用Left,Right和Mid
Option Explicit
Private Sub Command1_Click()
Dim Num(2)
Num(0) = Val(Left(Label1.Caption, 2))
Num(1) = Val(Mid(Label1.Caption, 3, 1))
Num(2) = Val(Right(Label1.Caption, 2))
MsgBox "Num(0)="Num(0)vbCrLf"Num(1)="Num(1)vbCrLf"Num(2)="Num(2)
'如果想测试是不是可以计算,可以用这一句
'MsgBox "Num(0)+1="Num(0) + 1vbCrLf"Num(1)+1="Num(1) + 1vbCrLf"Num(2)+1="Num(2) + 1
End Sub
Private Sub Form_Load()
Label1.Caption = "12345"
End Sub
有问题请追问,满意请采纳字符串截取vb.net!
vb.net截取字符串的问题可以如下截取056
Private Sub Command1_Click()
a = "123.45056"
Me.Caption = Mid(a, InStr(a, "056"), 3)
End Sub
VB.net2010按指定字符截取字符串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
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