How to find the seventh character of a string in ASP.NET with C#?

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I want to find the seventh character of a string in asp.net with c#.
My string is LD2007123451. Total Length of the string may vary.
I want to get the seventh charcter of the same

What I have tried:

Code is as below:
My string is

LD2007123451

.
a=a.substring(0,6)

Posted 11-Mar-20 23:54pm

ranio

Updated 12-Mar-20 1:15am

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3 solutions

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OriginalGriff · Answer 1 · 2020-03-11T23:58:00

Solution 1

Well ... a string is a collection of characters, and it has an indexer, so:

C#

string str = "LD2007123451";
if (str.Length >= 7)
    {
    char c = str[6];
    }

Posted 11-Mar-20 23:58pm

OriginalGriff

phil.o · Answer 2 · 2020-03-12T00:00:00

Solution 2

String.Substring Method (System) | Microsoft Docs[^]

C#

seventhCharacter = a.Substring(6, 1);
// 6 because 7th character and 0-based indexing
// 1 because you only want one character

Posted 12-Mar-20 0:00am

phil.o

MadMyche · Answer 3 · 2020-03-12T01:16:00

What you are looking for is the String.Substring(x,y) method. What this method will do is grab a portion of the string at character (x) for a length of (y) characters.

This is a fairly low-level operation and it is incredibly easy to get errors for this:
1. If x < 0 then you will throw an Argument Out of Range Exception
2. This error will also occur if x(start character) + y(length)is longer than the string

Reference:
String.Substring Method (System) | Microsoft Docs[^]