c# winform 打印 窗体 及 窗体控件内容 的 初级尝试

学习c# winform 打印 参照了网络上诸多资源
效果示意：

操作步骤：
1、新建winform项目及创建窗体

2、拖取 打印 相关控件
   PageSetupDialog 、 PrintDialog 、 PrintDocument 、PrintPreviewDialog

3、设置上述控件的Document属性为相应的PrintDocument

4、设置按钮等控件 及 添加相应按钮事件

5、示意代码如下

public partial class Form3 : Form
{
    public Form3()
    {
        InitializeComponent();
        this.printDocument1.OriginAtMargins = true;//启用页边距
        this.pageSetupDialog1.EnableMetric = true; //以毫米为单位

    }

    //打印设置
    private void btnSetPrint_Click(object sender, EventArgs e)
    {
        this.pageSetupDialog1.ShowDialog(); 
    }

    //打印预览
    private void btnPrePrint_Click(object sender, EventArgs e)
    {
        this.printPreviewDialog1.ShowDialog(); 
    }

    //打印
    private void btnPrint_Click(object sender, EventArgs e)
    {
        if (this.printDialog1.ShowDialog() == DialogResult.OK)
        {
            this.printDocument1.Print();
        }
    }

    //打印内容的设置
    private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
    {                        
        ////打印内容 为 整个Form
        //Image myFormImage;
        //myFormImage = new Bitmap(this.Width, this.Height);
        //Graphics g = Graphics.FromImage(myFormImage);
        //g.CopyFromScreen(this.Location.X, this.Location.Y, 0, 0, this.Size);
        //e.Graphics.DrawImage(myFormImage, 0, 0);

        ////打印内容 为 局部的 this.groupBox1
        //Bitmap _NewBitmap = new Bitmap(groupBox1.Width, groupBox1.Height);
        //groupBox1.DrawToBitmap(_NewBitmap, new Rectangle(0, 0, _NewBitmap.Width, _NewBitmap.Height));
        //e.Graphics.DrawImage(_NewBitmap, 0, 0, _NewBitmap.Width, _NewBitmap.Height); 

        //打印内容 为 自定义文本内容 
        Font font = new Font("宋体", 12);
        Brush bru = Brushes.Blue; 
        for (int i = 1; i <= 5; i++)
        {
            e.Graphics.DrawString("Hello world ", font, bru, i*20, i*20);
        }
    }
}