Get only numbers from string

Question

i want to get only numbers from string.

Lest say that this is my string :

324ghgj123

i want to get:

324123

Answer 1

For a linear search approach you can use this algorithm, it’s in C# but can easily be translated in vb.net, hope it helps.

string str = “123a123”;

for(int i=0;i<str.length()-1;i++)
{
    if(int.TryParse(str[i], out nval))
        continue;
    else
        str=str.Rremove(i,i+1);
}

Answer 2

Function that returns string without digits

Public Function _RemoveNonDigitCharacters(S As String) As String
        Return New String(S.Where(Function(x As Char) System.Char.IsDigit(x)).ToArray)
End Function