Question

引用datagridview1中的单元格值，总是显示索引超出范围，必须为非负值并且小于集合大小。

private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e) { Brush bru = Brushes.Black; int g = dataGridView1.ColumnCount;//获得行数; int h = (g * 5 + 5) / 10;//获得页数; for (int i = 1; i <= h; i++) { e.Graphics.DrawString("NANTONG", new Font(new FontFamily("黑体"), 18), bru, 100, 0); e.Graphics.DrawString(txt_kh.Text, new Font(new FontFamily("黑体"), 18), bru, 60, 35); e.Graphics.DrawString(txt_xh.Text, new Font(new FontFamily("黑体"), 18), bru, 60, 70); e.Graphics.DrawString(dataGridView1.Rows[2 * i - 1].Cells[2].Value.ToString(), new Font(new FontFamily("黑体"), 18), bru, 60, 105); e.Graphics.DrawString(txt_xxh.Text, new Font(new FontFamily("黑体"), 12), bru, 180, 105); e.Graphics.DrawString(txt_gh1.Text + " " + txt_gh2.Text + " " + txt_gh3.Text, new Font(new FontFamily("黑体"), 12), bru, 60, 140); e.Graphics.DrawString(txt_rq.Text, new Font(new FontFamily("黑体"), 12), bru, 200, 140); e.Graphics.DrawString(txt_bz.Text, new Font(new FontFamily("黑体"), 18), bru, 60, 175); if (2 * i - 1 < g) { e.Graphics.DrawString("NANTONG", new Font(new FontFamily("黑体"), 18), bru, 455, 0); e.Graphics.DrawString(txt_kh.Text, new Font(new FontFamily("黑体"), 18), bru, 415, 35); e.Graphics.DrawString(txt_xh.Text, new Font(new FontFamily("黑体"), 18), bru, 415, 70); e.Graphics.DrawString(dataGridView1.Rows[2 * i].Cells[2].Value.ToString(), new Font(new FontFamily("黑体"), 18), bru, 415, 105); e.Graphics.DrawString(txt_xxh.Text, new Font(new FontFamily("黑体"), 12), bru, 535, 105); e.Graphics.DrawString(txt_gh1.Text + " " + txt_gh2.Text + " " + txt_gh3.Text, new Font(new FontFamily("黑体"), 12), bru, 415, 140); e.Graphics.DrawString(txt_rq.Text, new Font(new FontFamily("黑体"), 12), bru, 555, 140); e.Graphics.DrawString(txt_bz.Text, new Font(new FontFamily("黑体"), 18), bru, 415, 175); if (2 * i < g) { e.HasMorePages = true; } else { e.HasMorePages = false; } } } }

Answer 1

你必须确认，你的2*i-1是大于0的，要不就会溢出，因为根本没有这个序号

追问

看见上面for (int i = 1; i <= h; i++)了吗 难道2*i-1不大于0吗

追答

看不到，被你挡住了

追问

我代码都贴出来了怎么会看不见

追答

那你就要看2*i-1当i=h时是不是超过记录的数目。你的图，只有右边半拉代码

另外看到也没用，你数据库记录条数只有本机能看到

追问

我明白你的意思了 就数据有五行 但实际上最后一行为ROW的值为4

追答

嗯