C # How to Implement left and right truncation strings in winform

C # How to Implement left and right truncation strings in winform

The substring method provided in C # can implement related functions.

First, let's review the substring method.

Usage 1: String. substring method (startindex, length)

Returns the child string of length starting with startindex in this string.

Startindex: Index of the starting position of the substring, starting from 0.

Length: the number of truncated characters in the substring.

Usage 2: String. substring method (startindex)

Returns all the remaining characters starting from startindex in the string.

Startindex: Index of the starting position of the substring, starting from 0.

After getting familiar with this method, we will implement how to extract strings left and right.

Left truncation: Str. substring (0, I) returns, and returns the I characters on the left.

Right truncation: Str. substring (Str. Length-I, I) returns, and returns the I characters on the right.

See the following example:

Int I = 2;

String STR = "123456 ″;

String strleft = Str. substring (0, I );

String strright = Str. substring (Str. Length-I, I );

Strleft is "12 ″

Strright is "56 ″