C#在声明对象时对其赋值的一种方式

private string GetSaveAsPathXls(string defaultFileName)
        {

            SaveFileDialog getXlsPath = new SaveFileDialog()
            {
                Filter = "Excel Files   (*.xlsx)|*.xlsx",
                FilterIndex = 2,
                RestoreDirectory = true,
                FileName = defaultFileName
            };

            if (getXlsPath.ShowDialog() == DialogResult.OK)
            {
                return getXlsPath.FileName;
            }
            else
            {
                return string.Empty;
            }
        }