Which of the following is the correct syntax to insert "Hello" at index 2 in a StringBuilder named sb?

easy📝 Syntax Q3 of Q15

C Sharp (C#) - Strings and StringBuilder

Asb.Put(2, "Hello");

Bsb.Add(2, "Hello");

Csb.AppendAt(2, "Hello");

Dsb.Insert(2, "Hello");

Step-by-Step Solution

Solution:

Step 1: Recall StringBuilder insertion method
The method to insert text at a specific index is Insert.
Step 2: Verify syntax correctness
The correct syntax is sb.Insert(2, "Hello");. Other methods like Add, AppendAt, or Put do not exist.
Final Answer:
sb.Insert(2, "Hello"); -> Option D
Quick Check:
Insert method syntax = sb.Insert(index, string) [OK]

Quick Trick: Use Insert(index, string) to add text at any position [OK]

Common Mistakes:

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