Question

我正在尝试从我的爸爸业务的应用程序打印发票，我使用以下代码打印发票。

我的尝试如下：

{

int y = 470;
        while (i < dataGridView1.RowCount)
        {    
            e.Graphics.DrawString(dataGridView1.Rows[i].Cells["ProductName"].Value.ToString(), DefaultFont, Brushes.Black, new Point(35, y));
            e.Graphics.DrawString(dataGridView1.Rows[i].Cells["Desc"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(250, y));
            e.Graphics.DrawString(dataGridView1.Rows[i].Cells["Quantity"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(600, y));
            e.Graphics.DrawString(dataGridView1.Rows[i].Cells["UnitPrice"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(650, y));
            e.Graphics.DrawString(dataGridView1.Rows[i].Cells["Tax"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(700, y));
            e.Graphics.DrawString(dataGridView1.Rows[i].Cells["Total"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(650, y));
            y = y + 20;
            if (y >= pageHeight)
            {

                e.HasMorePages = true;
                y = 0;
                i++;
                return;
           }
            else
            {
                e.HasMorePages = false;
            }
            i++;
        }
}

我这是一个全局变量

private int i = 0;

当我点击预览按钮时，我得到预期的输出但是当我在纸上打印时，只打印while循环中的内容。我尝试使用局部变量而不是j的全局变量，如下所示，并且它有效。

for (int j=0; j < dataGridView1.RowCount; j++)
        {
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["ProductName"].Value.ToString(), DefaultFont, Brushes.Black, new Point(35, y));
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["Desc"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(250, y));
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["Quantity"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(600, y));
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["UnitPrice"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(650, y));
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["Tax"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(700, y));
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["Total"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(650, y));
            y = y + 20;
        }

但如果要包含的项目超出页面高度，我不知道如何添加新页面。请帮忙。

Answer 1

在逐步遍历代码后，我发现在打印表单时再次运行代码tp打印预览。所以我只需将i值初始化为0，以便从头开始打印。

这是解决它的代码

int j;
        for (j=i; j < dataGridView1.RowCount && y<e.MarginBounds.Bottom; j++)
        {
            e.Graphics.DrawString(e.MarginBounds.Bottom.ToString(), DefaultFont, Brushes.Black, new Point(100, y));
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["ProductName"].Value.ToString(), DefaultFont, Brushes.Black, new Point(35, y));
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["Desc"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(220, y));
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["Quantity"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(770, y));
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["UnitPrice"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(620, y));
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["Tax"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(670, y));
            e.Graphics.DrawString(dataGridView1.Rows[j].Cells["Total"].Value.ToString(), new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(720, y));
            y = y + 20;
        }
        if (j < dataGridView1.RowCount)
        {
            e.HasMorePages = true;
            i=j;
        }
        else
        {
            e.HasMorePages = false;
            i = 0;
        }

在文件c＃.net上打印

1 个答案: