public static string TruncateLongString(this string str, int maxLength)
{
if (string.IsNullOrEmpty(str)) return str;
return str.Substring(0, Math.Min(str.Length, maxLength));
}
In C# 8 or later it is also possible to use a Range to make this a bit terser:
public static string TruncateLongString(this string str, int maxLength)
{
return str?[0..Math.Min(str.Length, maxLength)];
}
Which can be further reduced using an expression body:
public static string TruncateLongString(this string str, int maxLength) =>
str?[0..Math.Min(str.Length, maxLength)];
Note null-conditional operator (?
) is there to handle the case where str
is null. This replaces the need for an explict null check.