| IndexOf(StringBuilder, Char) | Specifies the zero-based index of the first occurrence of the specified character in builder. |
| IndexOf(StringBuilder, Char, Int32) | Returns the zero-based index of the first occurrence of the specified character in builder. The search starts at the specified index. |
| IndexOf(StringBuilder, Char, Int32, Int32) | Returns the zero-based index of the first occurrence of the specified character in builder. The search begins at a specified index and a specified number of character positions are checked. |