Question

现在，我正在尝试在PrintDocument上构建我的表单，但是我看到页面上实际显示内容的唯一方法是打印纸张。它有效，但我需要添加很多东西，而且我宁愿不浪费大量的纸张。现在我有一个打印对话框，但没有打印预览按钮。有没有办法让我出现？谢谢！

public partial class Form4 : System.Windows.Forms.Form
    {
        private System.ComponentModel.Container components;
        private System.Windows.Forms.Button printButton;

        public Form4()
        {
            // The Windows Forms Designer requires the following call.
            InitializeComponent();
        }

        // The Click event is raised when the user clicks the Print button. 
        private void printButton_Click(object sender, EventArgs e)
        {
            PrintDocument pd = new PrintDocument();
            pd.PrintPage += new PrintPageEventHandler(this.pd_PrintPage);
            PrintDialog pdi = new PrintDialog();
            pdi.Document = pd;
            if (pdi.ShowDialog() == DialogResult.OK)
            {
                pd.Print();
            }

        }

        // The PrintPage event is raised for each page to be printed. 
        private void pd_PrintPage(object sender, PrintPageEventArgs e)
        {
            Single yPos = 0;
            Single leftMargin = e.MarginBounds.Left;
            Single topMargin = e.MarginBounds.Top;
            Image img = Image.FromFile("logo.bmp");
            Rectangle logo = new Rectangle(40, 40, 50, 50);
            using (Font printFont = new Font("Arial", 20.0f))
            {
                e.Graphics.DrawImage(img, logo);
                e.Graphics.DrawString("Header", printFont, Brushes.Black, leftMargin, yPos, new StringFormat());
            }
            using (SolidBrush blueBrush = new SolidBrush(Color.Black))
            {
                Rectangle rect = new Rectangle(100, 100, 500, 120);
                e.Graphics.FillRectangle(blueBrush, rect);
            }
        }


        // The Windows Forms Designer requires the following procedure. 
        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.printButton = new System.Windows.Forms.Button();

            this.ClientSize = new System.Drawing.Size(504, 381);
            this.Text = "Print Example";

            printButton.ImageAlign =
               System.Drawing.ContentAlignment.MiddleLeft;
            printButton.Location = new System.Drawing.Point(32, 110);
            printButton.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
            printButton.TabIndex = 0;
            printButton.Text = "Print the file.";
            printButton.Size = new System.Drawing.Size(136, 40);
            printButton.Click += new System.EventHandler(printButton_Click);

            this.Controls.Add(printButton);
        }

    }

Answer 1

您可以使用PrintPreviewDialog：

private void printButton_Click(object sender, EventArgs e)
{
    PrintDocument pd = new PrintDocument();
    pd.PrintPage += new PrintPageEventHandler(this.pd_PrintPage);

    PrintDialog printdlg = new PrintDialog();
    PrintPreviewDialog printPrvDlg = new PrintPreviewDialog();

    // preview the assigned document or you can create a different previewButton for it
    printPrvDlg.Document = pd;
    printPrvDlg.ShowDialog(); // this shows the preview and then show the Printer Dlg below

    printdlg.Document = pd;

    if (printdlg.ShowDialog() == DialogResult.OK)
    {
        pd.Print();
    }
}

Answer 2

如果想要在打印前使用单独的按钮预览文档，请查看此How do I trigger the PrintPreviewDialog您可能要忽略文件流方面。

这对我有帮助，我希望它也能帮助别人

在C＃中显示打印预览

2 个答案: