How can get a substring from a string in C#?

Question

I have a large string and it’s stored in a string variable, str. And I want to get a substring from that in C#.

Suppose the string is: " Retrieves a substring from this instance. The substring starts at a specified character position, "

The substring result what I want to display is: The substring starts at a specified character position.

Answer 1

You could do this manually or using the IndexOf method.

Manually:

int index = 43;
string piece = myString.Substring(index);

Using IndexOf, you can see where the full stop is:

int index = myString.IndexOf(".") + 1;
string piece = myString.Substring(index);

Answer 2

string newString = str.Substring(0, 10);

will give you the first 10 characters (from position 0 to position 9).

See String.Substring Method.

Answer 3

Here is an example of getting a substring from the 14th character to the end of the string. You can modify it to fit your needs.

string text = "Retrieves a substring from this instance. The substring starts at a specified character position.";

// Get substring where 14 is the start index
string substring = text.Substring(14);