Question

我需要从dataGrid显示图片来打印页面吗？如何设置值图像？

private void printDocument_nahlad_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
   //e.Graphics.DrawImage(dataGridView_nahlad.Rows[0].Cells[12]........... = , 620, 55, 120, 120);
}

我添加了代码，将图片保存到数据库SQL。创建一个保存为图片的QR码。我显示所有保存数据的代码。

创建新：

public partial class form : Form
{

    kasspoxTestEntities test;

        private void btn_novy_vystup_Click(object sender, EventArgs e)
    {

        try
        {
            panel_vystup.Enabled = true;
            cmb_dodavatel_vystup.Focus();

            tab_vystup f = new tab_vystup();
            test.tab_vystup.Add(f);
            tabvystupBindingSource.Add(f);
            tabvystupBindingSource.MoveLast();

        }


          private void btn_generovat_vystup_Click(object sender, EventArgs e)
    {

      if (!string.IsNullOrEmpty(cmb_dodavatel_vystup.Text) & !string.IsNullOrEmpty(txt_cislo_palety_vystup.Text) & !string.IsNullOrEmpty(txt_hrubka_vystup.Text) & !string.IsNullOrEmpty(txt_sirka_vystup.Text) & !string.IsNullOrEmpty(txt_dlzka_vystup.Text) & !string.IsNullOrEmpty(txt_pocet_vystup.Text) & !string.IsNullOrEmpty(cmb_kvalita_vystup.Text) & !string.IsNullOrEmpty(cmb_druh_vystup.Text))
        {


                txt_objem_vystup.Text = (((Convert.ToInt32(txt_hrubka_vystup.Text) * Convert.ToInt32(txt_sirka_vystup.Text) * Convert.ToInt32(txt_dlzka_vystup.Text) * 0.000000001) * Convert.ToInt32(txt_pocet_vystup.Text)).ToString());
                txt_objem_vystup.Text = Math.Round(double.Parse(txt_objem_vystup.Text), 3).ToString();

                MessagingToolkit.QRCode.Codec.QRCodeEncoder encoder = new MessagingToolkit.QRCode.Codec.QRCodeEncoder();
                encoder.QRCodeScale = 8;

                Bitmap bmp = encoder.Encode(cmb_dodavatel_vystup.Text + ";" +
                                                txt_cislo_palety_vystup.Text + txt_datum_vystup.Text + txt_smena_vystup.Text + ";" +
                                                txt_hrubka_vystup.Text + txt_sirka_vystup.Text + txt_dlzka_vystup.Text + ";" +
                                                txt_pocet_vystup.Text + ";" +
                                                cmb_kvalita_vystup.Text + ";" +
                                                txt_objem_vystup.Text + ";" +
                                                cmb_druh_vystup.Text);



                txt_link.Text = (cmb_dodavatel_vystup.Text + ";" +
                                                txt_cislo_palety_vystup.Text + txt_datum_vystup.Text + txt_smena_vystup.Text + ";" +
                                                txt_hrubka_vystup.Text + txt_sirka_vystup.Text + txt_dlzka_vystup.Text + ";" +
                                                txt_pocet_vystup.Text + ";" +
                                                cmb_kvalita_vystup.Text + ";" +
                                                txt_objem_vystup.Text + ";" +
                                                cmb_druh_vystup.Text);


                pictureBox.Image = bmp;
                btn_tlacit_vystup.Enabled = true;
                lb_pozor.Visible = false;

                 MessageBox.Show("Kód bol vygenerovaný a paleta uložená", "Informácia", MessageBoxButtons.OK, MessageBoxIcon.Information);

                tabvystupBindingSource.EndEdit();
                tabskladBindingSource.EndEdit();
                test.SaveChangesAsync();

Answer 1

所以，我从我的previous example WinForm with an image column.开始（您可能需要查看编辑历史记录以查看我最初添加图像列的方式）。

下一步是转到您的工具箱，然后添加＆＃34; PrintDocument＆＃34;到您的表格（＆＃34; Printing＆＃34;）。它将显示在屏幕底部，然后右键单击＆gt;查看属性。在“属性”窗口中，单击“迅雷”图标以显示事件，然后双击＆＃34; PrintPage＆＃34;的字段。这将创建一个PrintPage事件。使用以下代码：

private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            Bitmap bm = new Bitmap(this.dataGridView1.Width, this.dataGridView1.Height);
            dataGridView1.DrawToBitmap(bm, new Rectangle(0, 0, this.dataGridView1.Width, this.dataGridView1.Height));
            e.Graphics.DrawImage(bm, 0, 0);
        }

为方便起见，您还可以添加打印按钮，例如：

private void button1_Click(object sender, EventArgs e)
    {
        PrintDialog printDialog = new PrintDialog();
        printDialog.Document = printDocument1;
        if (printDialog.ShowDialog() == DialogResult.OK)
        {
            printDocument1.Print();
        }
    }

这会将DataGridView转换为图像，然后打印。我在我的表单中对它进行了测试，它打印出的图像列很好。

或者，您可以查看一些示例CodeProjects here和here.

根据OP的评论进行编辑：如果您想将特定图片传递给打印机，您可以找到将图像位置传递给Bitmap构造函数的方法（例如{ {1}}）或者您可以直接从DataGridViewImageColumn获取Bitmap，如下所示：

Bitmap(imageLocation)

Answer 2

    private void printDocument_nahlad_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
    {

            // prvy štitok
            // prvy stlpec
            e.Graphics.DrawString(dataGridView_nahlad.Columns[0].HeaderText.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(75,55));
            e.Graphics.DrawString(dataGridView_nahlad.Rows[0].Cells[0].FormattedValue.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(150, 55));

            e.Graphics.DrawString(dataGridView_nahlad.Columns[1].HeaderText.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(75, 75));
            e.Graphics.DrawString(dataGridView_nahlad.Rows[0].Cells[1].FormattedValue.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(150, 75));

            // druhy stlpec

            e.Graphics.DrawString(dataGridView_nahlad.Columns[5].HeaderText.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(290, 55));
            e.Graphics.DrawString(dataGridView_nahlad.Rows[0].Cells[5].FormattedValue.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(350, 55));

            e.Graphics.DrawString(dataGridView_nahlad.Columns[6].HeaderText.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(290, 75));
            e.Graphics.DrawString(dataGridView_nahlad.Rows[0].Cells[6].FormattedValue.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(350, 75));


            // treti stlpec

            e.Graphics.DrawString(dataGridView_nahlad.Columns[9].HeaderText.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(450, 55));
            e.Graphics.DrawString(dataGridView_nahlad.Rows[0].Cells[9].FormattedValue.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(520, 55));

            e.Graphics.DrawString(dataGridView_nahlad.Columns[10].HeaderText.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(450, 75));
            e.Graphics.DrawString(dataGridView_nahlad.Rows[0].Cells[10].FormattedValue.ToString(), new Font("Microsoft Sans Serif", 12, FontStyle.Bold), Brushes.Black, new Point(520, 75));

            // vykreslenie čiar

            e.Graphics.DrawLine(new Pen (Brushes.Black, 3), 75 ,190,740,190);
            e.Graphics.DrawLine(new Pen(Brushes.Black, 3), 75, 45, 740, 45);


            //CODE FOR MY IMAGE

           // Bitmap bm = (Bitmap)dataGridView_nahlad.Rows[0].Cells[12].Value;
            //e.Graphics.DrawImage(bm, 620, 55, 120, 120);

       }

从DataGridview打印图像？

2 个答案: