Concat() [12/12]

static string System.String.Concat ( string? str0, string? str1, string? str2, string? str3 )

inlinestatic

Definition at line 1757 of file String.cs.

    {
        if (IsNullOrEmpty(str0))
        {
            return str1 + str2 + str3;
        }
        if (IsNullOrEmpty(str1))
        {
            return str0 + str2 + str3;
        }
        if (IsNullOrEmpty(str2))
        {
            return str0 + str1 + str3;
        }
        if (IsNullOrEmpty(str3))
        {
            return str0 + str1 + str2;
        }
        int length = str0.Length + str1.Length + str2.Length + str3.Length;
        string text = FastAllocateString(length);
        FillStringChecked(text, 0, str0);
        FillStringChecked(text, str0.Length, str1);
        FillStringChecked(text, str0.Length + str1.Length, str2);
        FillStringChecked(text, str0.Length + str1.Length + str2.Length, str3);
        return text;
    }

References System.String.FastAllocateString(), System.String.FillStringChecked(), System.String.IsNullOrEmpty(), System.length, and System.text.