C# printPreviewDialog 打印预览只显示一页
各位高手指点下 1、我在用PrintDocument实现 数据打印的时候，printPreviewDialog打印预览 只显示一页，实际数据可以显示好几页。
2、现在打印的数据，图片上显示了三组的数据，怎么实现每一页只显示一组数据。
可能是我下面的方面写的有点问题，我在一个循环里把内容都添加到一个e.Graphics上了，因为之前没有接触这类打印，希望高手 教教小弟，多谢！！！
private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
Font headFont = new System.Drawing.Font("宋体", 20);
Font headFont_ = new System.Drawing.Font("宋体", 18);
Font ksFont = new System.Drawing.Font("宋体", 16);
Font FontData = new System.Drawing.Font("宋体", 14);
Brush myBrush = Brushes.Black;
int ofleft = 15;
int lineIndex =0;
foreach (string id in list_ID)
{
DataTable dt_items = GetItems(id); //获取每个单号对应的药品数据
if (dt_items.Rows.Count > 0)
{
string ks = dt_items.Rows[0]["科室名称"].ToString();
string djid = dt_items.Rows[0]["单据编号"].ToString();
string cztime = dt_items.Rows[0]["操作时间"].ToString();
e.Graphics.DrawString("第三附属医院", headFont, myBrush, 450, 20+lineIndex*30);
lineIndex++;
e.Graphics.DrawString("摆药工作单（药品汇总） 存取柜", headFont_, myBrush, 430, 20 + lineIndex * 30);
lineIndex++;
e.Graphics.DrawString("科室:", ksFont, myBrush, ofleft, 20 + lineIndex * 30);
e.Graphics.DrawString(ks, ksFont, myBrush, 75, 20 + lineIndex * 30); //科室名称
e.Graphics.DrawString("单据编号：", ksFont, myBrush, 400, 20 + lineIndex * 30);
e.Graphics.DrawString(djid, ksFont, myBrush, 510, 20 + lineIndex * 30); //单据号
lineIndex++;
//更具画布的宽度，话虚线
int pagewidth = e.MarginBounds.Width;
for (int i = ofleft; i < pagewidth - ofleft; )
{
e.Graphics.DrawString(".", FontData, myBrush, i, 20 + lineIndex * 30);
i = i + 4;
}
lineIndex++;
e.Graphics.DrawString("药品名称", ksFont, myBrush, ofleft + 40, 20 + lineIndex * 30); //药品名称
e.Graphics.DrawString("规格", ksFont, myBrush, ofleft + 300, 20 + lineIndex * 30);
e.Graphics.DrawString("数量", ksFont, myBrush, ofleft + 430, 20 + lineIndex * 30);
e.Graphics.DrawString("单位", ksFont, myBrush, ofleft + 500, 20 + lineIndex * 30);
e.Graphics.DrawString("厂家", ksFont, myBrush, ofleft + 600, 20 + lineIndex * 30);
e.Graphics.DrawString("单价", ksFont, myBrush, ofleft + 700, 20 + lineIndex * 30);
e.Graphics.DrawString("金额", ksFont, myBrush, ofleft + 800, 20 + lineIndex * 30);
e.Graphics.DrawString("货架", ksFont, myBrush, ofleft + 900, 20 + lineIndex * 30);
lineIndex++;
for (int i = ofleft; i < pagewidth - ofleft; )
{
e.Graphics.DrawString(".", FontData, myBrush, i, 20 + lineIndex * 30);
i = i + 4;
}
//循环得到的药品信息 添加到画布中......
for (int j = 0; j < dt_items.Rows.Count; j++)
{
lineIndex++;
e.Graphics.DrawString(dt_items.Rows[j]["药品名称"].ToString(), ksFont, myBrush, ofleft, 20 + lineIndex * 30); //药品名称
e.Graphics.DrawString(dt_items.Rows[j]["药品规格"].ToString(), ksFont, myBrush, ofleft + 300, 20 + lineIndex * 30);
e.Graphics.DrawString(dt_items.Rows[j]["出药数量"].ToString(), ksFont, myBrush, ofleft + 430, 20 + lineIndex * 30);
e.Graphics.DrawString(dt_items.Rows[j]["药品包装"].ToString(), ksFont, myBrush, ofleft + 500, 20 + lineIndex * 30);
e.Graphics.DrawString(dt_items.Rows[j]["生产商家"].ToString(), ksFont, myBrush, ofleft + 600, 20 + lineIndex * 30);
e.Graphics.DrawString(double.Parse( dt_items.Rows[j]["药品单价"].ToString()).ToString("F2"), ksFont, myBrush, ofleft + 700, 20 + lineIndex * 30);
e.Graphics.DrawString(double.Parse( dt_items.Rows[j]["价格小计"].ToString()).ToString("F2"), ksFont, myBrush, ofleft + 800, 20 + lineIndex * 30);
e.Graphics.DrawString(dt_items.Rows[j]["药架号"].ToString(), ksFont, myBrush, ofleft + 900, 20 + lineIndex * 30);
}
lineIndex++;
for (int i = ofleft; i < pagewidth - ofleft; )
{
e.Graphics.DrawString(".", FontData, myBrush, i, 20 + lineIndex * 30);
i = i + 4;
}
lineIndex++;
e.Graphics.DrawString("核对人：", ksFont, myBrush, ofleft , 20 + lineIndex * 30);
e.Graphics.DrawString("护士核对人：", ksFont, myBrush, ofleft + 200, 20 + lineIndex * 30);
e.Graphics.DrawString("摆药时间：", ksFont, myBrush, ofleft + 400, 20 + lineIndex * 30);
e.Graphics.DrawString(cztime, ksFont, myBrush, ofleft + 520, 20 + lineIndex * 30);
lineIndex++;
UpdataInfo(id); //打印后修改数据
}
e.HasMorePages = false; //改成true 之后，预览的时候一直在生成新的预览页面，但是生成预览界面都是空白的。
}
}
C# Print打印 --------------------编程问答-------------------- 等待高人.... --------------------编程问答-------------------- 图片右上角 页（P ) 你点一下上翻的，看能不能增加，如果能表示有多页。 --------------------编程问答-------------------- 除
private void PrintPreview() //预览的方法
{
printPreviewDialog1.Document = printDocument1;
printPreviewDialog1.ShowDialog();
}
补充：.NET技术 , C#
