CODEWITHSUNDEEP
c#.netwpf
user1065542
user1065542

Reputation: 173

Substring in c# and add one by one

I have string 'name' and want to do substring the last number from this string. 

string name = "1100_PF_R_06230_1";
textBox1.Text = (name.Substring(name.Length - 1, 1));

name string changes respectively as file number, so string name becomes. 

1100_PF_R_06230_1
1100_PF_R_06230_2
1100_PF_R_06230_3
1100_PF_R_06230_4
1100_PF_R_06230_5
1100_PF_R_06230_6
1100_PF_R_06230_7
1100_PF_R_06230_8
1100_PF_R_06230_9
1100_PF_R_06230_10

when it reaches to 10 the my substring gives me 0 and file starts from 1 again. i want to substing name from last '_' underscore so that i can add number to it.

please help.

Upvotes: 4

Views: 193

Answers (3)

Piotr Stapp
Piotr Stapp

Reputation: 19828

Try this code:

 string name = "1100_PF_R_06230_1";
 var num = (name.Substring(name.LastIndexOf('_')+1));

Upvotes: 4

MoonKnight
MoonKnight

Reputation: 23831

You want to use Split('_') as follows

string strNumber = name.Split('_').Last();

I hope this helps.

Upvotes: 3

cuongle
cuongle

Reputation: 75316

You can use Split method with LINQ Last:

var result =  name.Split('_').Last();

Upvotes: 8

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