input: 
  def convert_to_csharp(py_code: str) -> str:
      """ Convert a given Python function to a C# function.
      >>> convert_to_csharp("def power(x, y):\\n    if y == 0:\\n        return 1\\n    else:\\n        return x * power(x, y - 1)")
      'public int Power(int x, int y)\\n{\\n    if (y == 0)\\n    {\\n        return 1;\\n    }\\n    else\\n    {\\n        return x * Power(x, y - 1);\\n    }\\n}'
      """
  
output:     lines = py_code.split('\n')
      csharp_code = []
      for line in lines:
          if line.strip().startswith('def '):
              func_name = line.split('(')[0].split()[-1]
              params = line.split('(')[1].split(')')[0].split(',')
              param_types = [f'int {p.strip()}' for p in params]
              csharp_code.append(f'public int {func_name}({", ".join(param_types)})')
              csharp_code.append('{')
          elif line.strip().startswith('if '):
              csharp_code.append(f'    {line.replace("if", "if (").replace(":", ")")}')
              csharp_code.append('    {')
          elif line.strip().startswith('else:'):
              csharp_code.append('    }')
              csharp_code.append('    else')
              csharp_code.append('    {')
          elif line.strip().startswith('return '):
              csharp_code.append(f'        {line.replace("return", "return ").replace("power", "Power")};')
          elif line.strip() == '':
              continue
      csharp_code.append('    }')
      csharp_code.append('}')
      return '\n'.join(csharp_code)