c#打印预览窗体结果是一片空白解决思路

c#打印预览窗体结果是一片空白
想实现打印窗体和窗体上的控件，参考了大家的代码，结果点击打印的时候，预览的结果是一边显示完了整个窗体，但是旁边多出了一块空白，请教各位这应该怎么解决呢。谢谢啊。

C# code

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;namespace ContractFill{    public partial class ZWebSite : Form    {        public ZWebSite(ContractFill.Main parent)        {            InitializeComponent();            this.MdiParent = parent;        }        private void button3_Click(object sender, EventArgs e)        {            Close();        }        [DllImport("gdi32.dll")]        public static extern long BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, int dwRop);        private Bitmap memoryImage;                private void CaptureScreen()        {            Graphics mygraphics = this.CreateGraphics();            Size s = this.Size;            memoryImage = new Bitmap(s.Width, s.Height, mygraphics);            Graphics memoryGraphics = Graphics.FromImage(memoryImage);            IntPtr dc1 = mygraphics.GetHdc();            IntPtr dc2 = memoryGraphics.GetHdc();            BitBlt(dc2, 0, 0, this.ClientRectangle.Width, this.ClientRectangle.Height, dc1, 0, 0, 13369376);            mygraphics.ReleaseHdc(dc1);            memoryGraphics.ReleaseHdc(dc2);        }                private void button1_Click(object sender, EventArgs e)        {            CaptureScreen();            printPreviewDialog1.ShowDialog();        }         private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)        {            e.Graphics.DrawImage(memoryImage, 0, 0);        }    }}

[解决办法]
你没有设置打印参数吧，printdocument对象里设置好后再打印
[解决办法]
打印参数没搞好吧，要根据你设置的纸张尺寸的参数来打印！
[解决办法]
Size s = this.Size;
memoryImage = new Bitmap(s.Width, s.Height, mygraphics);
是不是这里的尺寸不对

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