方法一：

ImageAttributes ImgAtt = new ImageAttributes(); ;
                ImgAtt.SetWrapMode(System.Drawing.Drawing2D.WrapMode.TileFlipXY);

m_graphics.DrawImage(image, new System.Drawing.Rectangle((int)(x - width / 2 + backBmp1.Width), (int)(y - pixel + 1), backBmp2.Width, backBmp2.Height), 0, 0, backImage2.Width, backImage2.Height, GraphicsUnit.Pixel,ImgAtt);

方法二：

 TextureBrush Txbrus = new TextureBrush(image);
 Txbrus.WrapMode = System.Drawing.Drawing2D.WrapMode.Tile;
 g.FillRectangle(Txbrus, new Rectangle(0, 0, width, height));