C#通过文件路径截取对应的文件夹路径

 

 try

            {

                OpenFileDialog openFileDialog = new OpenFileDialog();

                string str = comboBox_hexFilePath.Text;

                string file = str.Substring(0, str.LastIndexOf("\\") + 1);//去掉了路径

                openFileDialog.InitialDirectory = file;





                openFileDialog.Filter = "Hex文件|*.hex";

                openFileDialog.RestoreDirectory = true;

                openFileDialog.FilterIndex = 1;

              

                    comboBox_hexFilePath.Text = openFileDialog.FileName;//文件名

                    

                }

            }

            catch 

            {

                show_info("hex文件选择..");

            }