private void button1_Click(object sender, EventArgs e)

        {

            openFileDialog1.InitialDirectory = @"c:\";

            openFileDialog1.Filter = "文本文件(*.txt)|*.txt|所有文件(*.*)|*.*";



            if (openFileDialog1.ShowDialog() == DialogResult.OK)

            {

                int n = 0;

                string fname = openFileDialog1.FileName;

                StreamReader sr = new StreamReader(@fname, System.Text.Encoding.GetEncoding("gb2312"));

                char[] parsChar = { ' ' };

                string water = string.Empty;

                string date1 = string.Empty;

                string time1 = string.Empty;

                string temp = string.Empty;

                string date2 = string.Empty;

                string time2 = string.Empty;

                string space = string.Empty;

                string sctemp = textBox1.Text;

                string tmpLine;

                string splitline;

                string[] line; //string[] line2;

                while ((tmpLine = sr.ReadLine()) != null)