有一段C#代码实在不懂~~请各位大大帮我注释一下！！万分感谢~~

Question

private void cmbWind_SelectedIndexChanged(object sender, EventArgs e)
        {
            gPath.DrawImage((Bitmap)bmpWind.Clone(), 0, 0);
            System.Xml.XmlDocument xmlDoc;
            System.Xml.XmlNodeList xmlnl;            xmlDoc = ReadXml(fileInfo[cmbWind.SelectedIndex]);            xmlnl = xmlDoc.GetElementsByTagName("TFLJ");
            points = new Point[xmlnl.Count];
            int i = 0;
            foreach (XmlElement xmle in xmlnl)
            {
                points[i].X = (int)(((double.Parse(xmle["EASTLONG"].InnerText.ToString())) - 105.0) * tX);
                points[i].Y = (int)(215.0 - ((double.Parse(xmle["NORTHLAT"].InnerText.ToString())) * tY));
                i++;
            }            gPath.DrawLines(new Pen(Color.Red, 1), points);
            foreach (Point p in points)
            {
                gPath.DrawEllipse(new Pen(Color.Blue, 1), new Rectangle(p.X - 1, p.Y - 1, 2, 2));
            }            xmlnl = xmlDoc.GetElementsByTagName("TFXX_x0009_");
            int R;
            foreach (XmlElement xmle in xmlnl)
            {
                lstPathDesc.Items.Clear();
                lstPathDesc.Items.Add(xmle["TPTIME"].InnerText.Remove(xmle["TPTIME"].InnerText.IndexOf("T"),
                                      xmle["TPTIME"].InnerText.Length - xmle["TPTIME"].InnerText.IndexOf("T")));
                lstPathDesc.Items.Add("东经" + xmle["NORTHLAT"].InnerText);
                lstPathDesc.Items.Add("北纬" + xmle["EASTLONG"].InnerText);
                lstPathDesc.Items.Add("气压" + xmle["CENAIRPRE"].InnerText);
                lstPathDesc.Items.Add("风速" + xmle["MAXSPEED"].InnerText);
                R = (int)(double.Parse(xmle["RADIISIX"].InnerText.ToString()) / 5.5);
                gPath.DrawEllipse(new Pen(Color.Red, 1),
                                  new Rectangle((int)(((double.Parse(xmle["EASTLONG"].InnerText.ToString())) - 105.0) * tX) - R / 2,
                                                (int)(215.0 - ((double.Parse(xmle["NORTHLAT"].InnerText.ToString()))) * tY) - R / 2,
                                                 R, R)
                                 );
            }
            picWind.Refresh();        }

Answer 1

看起来不是很难懂，不过你这里有些东西是干嘛的没阐述清楚，比如cmbWind，lstPathDesc这些控件都干嘛的?

Answer 2

各位大大~~控件先不管了~~主要是语法还有含义不大懂
cmbWind_SelectedIndexChanged
是读取本地WIND文件的~

Answer 3

这应该是个地图的部分代码吧，，从xml中读取坐标点，指示出台风（猜的）的移动方向
用gdi+实现画图吧。。没什么复杂的 哪看不懂了？

Answer 4

private void cmbWind_SelectedIndexChanged(object sender, EventArgs e)
        {
            gPath.DrawImage((Bitmap)bmpWind.Clone(), 0, 0);//GDI+画图
            System.Xml.XmlDocument xmlDoc;
            System.Xml.XmlNodeList xmlnl;            xmlDoc = ReadXml(fileInfo[cmbWind.SelectedIndex]);//载入xml文件            xmlnl = xmlDoc.GetElementsByTagName("TFLJ");//获取xml节点
            points = new Point[xmlnl.Count]; //定义坐标集
            int i = 0;
            foreach (XmlElement xmle in xmlnl)//将通过xml节点的值实例化坐标集
            {
                points[i].X = (int)(((double.Parse(xmle["EASTLONG"].InnerText.ToString())) - 105.0) * tX);
                points[i].Y = (int)(215.0 - ((double.Parse(xmle["NORTHLAT"].InnerText.ToString())) * tY));
                i++;
            }            gPath.DrawLines(new Pen(Color.Red, 1), points);//将坐标点连起来
            foreach (Point p in points)//在坐标点上画2×2大小的方形
            {
                gPath.DrawEllipse(new Pen(Color.Blue, 1), new Rectangle(p.X - 1, p.Y - 1, 2, 2));
            }            xmlnl = xmlDoc.GetElementsByTagName("TFXX_x0009_");
            int R;
            foreach (XmlElement xmle in xmlnl)//通过xml文件画出“东经”"北纬"等相应的值
            {
                lstPathDesc.Items.Clear();
                lstPathDesc.Items.Add(xmle["TPTIME"].InnerText.Remove(xmle["TPTIME"].InnerText.IndexOf("T"),
                                      xmle["TPTIME"].InnerText.Length - xmle["TPTIME"].InnerText.IndexOf("T")));
                lstPathDesc.Items.Add("东经" + xmle["NORTHLAT"].InnerText);
                lstPathDesc.Items.Add("北纬" + xmle["EASTLONG"].InnerText);
                lstPathDesc.Items.Add("气压" + xmle["CENAIRPRE"].InnerText);
                lstPathDesc.Items.Add("风速" + xmle["MAXSPEED"].InnerText);
                R = (int)(double.Parse(xmle["RADIISIX"].InnerText.ToString()) / 5.5);
                gPath.DrawEllipse(new Pen(Color.Red, 1),
                                  new Rectangle((int)(((double.Parse(xmle["EASTLONG"].InnerText.ToString())) - 105.0) * tX) - R / 2,
                                                (int)(215.0 - ((double.Parse(xmle["NORTHLAT"].InnerText.ToString()))) * tY) - R / 2,
                                                 R, R)
                                 );
            }
            picWind.Refresh();        }

Answer 5

private void cmbWind_SelectedIndexChanged(object sender, EventArgs e)
{
//通过路径获得背景图片并将它显示
gPath.DrawImage((Bitmap)bmpWind.Clone(), 0, 0);
//实例化一个xml文档
System.Xml.XmlDocument xmlDoc;
//实例化一个节点集合
System.Xml.XmlNodeList xmlnl;
//读取xml文件
xmlDoc = ReadXml(fileInfo[cmbWind.SelectedIndex]);
//获得子元素列表
xmlnl = xmlDoc.GetElementsByTagName("TFLJ");
//获得坐标点的个数
points = new Point[xmlnl.Count];

int i = 0;
//通过循环得到各个点的坐标
foreach (XmlElement xmle in xmlnl)
{

points[i].X = (int)(((double.Parse(xmle["EASTLONG"].InnerText.ToString())) - 105.0) * tX);

points[i].Y = (int)(215.0 - ((double.Parse(xmle["NORTHLAT"].InnerText.ToString())) * tY));

i++;

}
//利用gdi+画出坐标线
gPath.DrawLines(new Pen(Color.Red, 1), points);

foreach (Point p in points)
{
//兰色画笔画圆和并移动矩形坐标
gPath.DrawEllipse(new Pen(Color.Blue, 1), new Rectangle(p.X - 1, p.Y - 1, 2, 2));

}
//获得节点名字属性的列
xmlnl = xmlDoc.GetElementsByTagName("TFXX_x0009_");

int R;
//通过这列获得坐标（东经XX 北纬XX 气压 XX 风速XX）的属性 画出风暴移动的路线
foreach (XmlElement xmle in xmlnl)
{
//清除xx控件的内容
lstPathDesc.Items.Clear();
//添加TPTIME点 并通过开头是T的搜索到TPTIME并删除原先的TPTIME点 不断更新TPTIME坐标
lstPathDesc.Items.Add(xmle["TPTIME"].InnerText.Remove(xmle["TPTIME"].InnerText.IndexOf("T"),
//以下代码是实现TPTIME坐标的更新
xmle["TPTIME"].InnerText.Length - xmle["TPTIME"].InnerText.IndexOf("T")));

lstPathDesc.Items.Add("东经" + xmle["NORTHLAT"].InnerText);

lstPathDesc.Items.Add("北纬" + xmle["EASTLONG"].InnerText);

lstPathDesc.Items.Add("气压" + xmle["CENAIRPRE"].InnerText);

lstPathDesc.Items.Add("风速" + xmle["MAXSPEED"].InnerText);
//获得风暴半径
R = (int)(double.Parse(xmle["RADIISIX"].InnerText.ToString()) / 5.5);
//画出风暴（圈圈）
gPath.DrawEllipse(new Pen(Color.Red, 1),

new Rectangle((int)(((double.Parse(xmle["EASTLONG"].InnerText.ToString())) - 105.0) * tX) - R / 2,
(int)(215.0 - ((double.Parse(xmle["NORTHLAT"].InnerText.ToString()))) * tY) - R / 2,
R, R)
);

}
//刷新空间，实现重绘
picWind.Refresh(); }******************************************]
因为这电脑上没有vs2003所以不能解释的很详细 不过应该能让楼主明白了吧
大家看看有没有什么错误