string str;string invoice_num_10;string invoice_num_9;double invoice_amount_9=0;double invoice_tax_9=0;int i;if(openFileDialog1.ShowDialog()  == DialogResult.Cancel)    return;System.IO.StreamReader f_name = new System.IO.StreamReader(openFileDialog1.FileName,System.Text.Encoding.Default);while((str = f_name.ReadLine()) != null)  //读取每一行的信息{    if(str.StartsWith("//"))    {        str = f_name.ReadLine();        //int nRowCount = Convert.ToInt32(str[3]);        str = str.Replace("~~", "~");        string[] mychar = str.Split(‘~‘);        int nRowCount = Convert.ToInt16(mychar[5]);        invoice_num_9 = mychar[3]+mychar[4];        invoice_num_10 = mychar[8];        invoice_amount_9= Convert.ToDouble(mychar[9]);        invoice_tax_9= Convert.ToDouble(mychar[11]);        // MessageBox.Show(invoice_num_9);            for(i=1;i<=efGrid1.EFRows -1;i++)  //循环Grid每一行，找到与读取invoice_num_10相同的行，并赋值        {            if(efGrid1.GetDataDisplay(i,"invoice_num_10").ToString().Trim() == invoice_num_10.Trim())            {                efGrid1[i,"check_option"] = true;                efGrid1[i,"invoice_num_9"] = invoice_num_9;                efGrid1[i,"invoice_amount_9"] =invoice_amount_9;                efGrid1[i,"tax_amount_9"] =invoice_tax_9;            }        }        for(int iRow=0; iRow<nRowCount; iRow++)        {            str = f_name.ReadLine();        }    }}f_name.Close();