只从字符串中获取数字

本文介绍了只从字符串中获取数字的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我只想从字符串中获取数字.

i want to get only numbers from string.

不要说这是我的字符串:

Lest say that this is my string :

324ghgj123

我想得到:

我尝试过的:

MsgBox(Integer.Parse("324ghgj123"))

推荐答案

试试这个:

Dim mytext As String = "123a123"
Dim myChars() As Char = mytext.ToCharArray()
For Each ch As Char In myChars
     If Char.IsDigit(ch) Then
          MessageBox.Show(ch)
     End If
Next

或:

Private Shared Function Num(ByVal value As String) As Integer
    Dim returnVal As String = String.Empty
    Dim collection As MatchCollection = Regex.Matches(value, "\d+")
    For Each m As Match In collection
        returnVal += m.ToString()
    Next
    Return Convert.ToInt32(returnVal)
End Function

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