求教，关于小票打印机 打印 datagridview后终止的问题

[xchjian012]

求教各位大侠，小弟用vs2008自带的打印控件 在小票打印机上 打印winform程序中的部分内容（包含固定内容和datagridview），当使用for循环打完datagridview后，打印机停止打印，后续的固定内容 需 按住小票打印机的出纸按钮，才能打出来，尝试过增加打印末尾的长度，但只有增加300的时候都给打印了出来，但空白纸也拉出很长，增加25 50 100都是终止于for循环打完datagridview。
代码如下，跪求指导....
private void printDocument1_PrintPage(object sender, PrintPageEventArgs e)
{
DataTable dt = (DataTable)dataGridView1.DataSource;
int x = 10, y = 0, kuan = 50, gao = 25;
int count = Convert.ToInt32(dataGridView1.Rows.Count.ToString());
Font ff = new Font("宋体", 10);
Font f2 = new Font("宋体", 12);
x += 40;
y += gao;
e.Graphics.DrawString("xx超市发货单", f2, Brushes.Blue, x, y);
y += 40;
x -= 40;
e.Graphics.DrawString("收货单位：", ff, Brushes.Blue, x, y);
x += 60;
e.Graphics.DrawString((string)comboBox1.Text.ToString(), ff, Brushes.Blue, x, y);
y += gao;
x -= 60;
e.Graphics.DrawString("发货时间：", ff, Brushes.Blue, x, y);
x += 60;
e.Graphics.DrawString((string)DateTime.Now.ToLongDateString(), ff, Brushes.Blue, x, y);
y += gao;
x -= 60;
e.Graphics.DrawString("---------------------------------", ff, Brushes.Blue, x, y);
y += gao;
e.Graphics.DrawString("商品名称", ff, Brushes.Blue, x, y);
x += 32;
x += 80;
e.Graphics.DrawString("数量", ff, Brushes.Blue, x, y);
x += 32;
e.Graphics.DrawString("单位", ff, Brushes.Blue, x, y);
x += 32;
e.Graphics.DrawString("单价", ff, Brushes.Blue, x, y);
x += 32;
e.Graphics.DrawString("小计", ff, Brushes.Blue, x, y);
x += 35;


foreach (DataColumn column in dt.Columns)
{
switch (column.ColumnName)
{
case "商品名称DataGridViewTextBoxColumn":
case "单价DataGridViewTextBoxColumn":

break;
default:
continue;
}
e.Graphics.DrawString(column.ColumnName, ff, Brushes.Black, x, y);
x += kuan;

}
y += gao;
x = 10;
for (int i = 0; i < count; i++)
{
dataGridView1.EndEdit();
DataGridViewCheckBoxCell checkCell = (DataGridViewCheckBoxCell)dataGridView1.Rows[i].Cells[0];
Boolean flag = Convert.ToBoolean(checkCell.Value);
if (flag == true)
{
for (int j = 1; j <= 5; j++)
{

e.Graphics.DrawString((string)dt.Rows[i].ItemArray[j].ToString(), ff, Brushes.Black, x, y);
if (j == 1)
{
x += 80;
}
x += 32;
}
}
x = 10;
y += gao;
}
e.Graphics.DrawString("---------------------------------", ff, Brushes.Blue, x, y);
y += gao;
e.Graphics.DrawString("合计", ff, Brushes.Blue, x, y);
x += 205;
e.Graphics.DrawString((string)label2.Text.ToString(), ff, Brushes.Blue, x, y);
y += 100; //以下两行是为了增加高度所设置的
e.Graphics.DrawString(" ", ff, Brushes.Blue, x, y);
y += 25;
}

[健者天行]

我之前写过 小票的打印，
不用e.Graphics.DrawString(这样的的，
直接是写文本文件的方式，只不是写的对象是打印机的端口，

希望对你的帮助：

        #region Print_CashResult
        public static void Print_CashResult(DataTable dt)
        {
            SafeFileHandle sfh = null;
            string instruction = null;
            IntPtr ptr = CreateFile(PrintPort, FileAccess.Write, FileShare.Write, 0, FileMode.Open, 0, IntPtr.Zero);
            if (ptr.ToInt32() == -1)
            {
                MessageBox.Show(string.Format("连接打印机：{0} 失败，请检查连接端口是否正确。", PrintPort ));
                return;
            }

            sfh = new SafeFileHandle(ptr, true);
            StreamWriter sw = new StreamWriter( new FileStream( sfh, FileAccess.Write), System.Text.Encoding.Default);

            StringBuilder sb = new StringBuilder();
            DataRow dr = dt.Rows[0];	//一次充值只有1行

            sb.AppendLine(string.Format("单据编号:{0}",dr["BillNo"]));
            sb.AppendLine(string.Format("{0,-15}{1,23}",ClubName + "(客户联)","充值"));
            sb.AppendLine("================================================");
            sb.AppendLine(string.Format("{0,-19}{1,18}", "客户编号:" + CustNo, "客户名称:" + CustName));
            sb.AppendLine("------------------------------------------------");
            sb.AppendLine(string.Format("{0}{1}{2}{3}{4}", "单据编号  ", "充值时间  ", "账户余额 ", "充值金额 ", "  账户金额"));

            sb.AppendLine(string.Format("{0,-10}{1,-9:yy-MM-dd}{2,-9}{3,-9}{4,10}", dr["BillNo"], dr["ResultDate"], dr["RemainAccount"].ToString().Replace(".00", ""), dr["ResultMoney"].ToString().Replace(".00", ""), dr["Account"].ToString().Replace(".00", "")));

            sb.AppendLine("------------------------------------------------");
            sb.AppendLine(string.Format("打印日期:{0:yyyy-MM-dd HH:mm}------操作员:{1,5}",DateTime.Now,dr["Operator"]));

            sw.WriteLine(sb);   //第1次 打客户联
            instruction = Convert.ToChar(29) + instruction + Convert.ToChar(86) + instruction + Convert.ToChar(66) + instruction + Convert.ToChar(100); //切纸
            sw.WriteLine(instruction);  //切纸

            sw.WriteLine(sb.Replace("(客户联)","(留底联)"));   //第2次 打(留底联)
            sw.WriteLine(instruction);  //切纸

            sw.Close();
            CloseHandle(ptr);

        }
        #endregion

[把最好的留到最后]

应该是定位问题，定位记得减去自己的本身高度或者宽度