C#读写文件--项目案例

//写文件–SaveFileDialog
private void Write()
{

        string file;
        System.Windows.Forms.SaveFileDialog sfd = new System.Windows.Forms.SaveFileDialog();
        sfd.Filter = "All files(*.*)|*.xml|All files(*.*)|*.*";
        sfd.FilterIndex = 1;
        sfd.Title = "另存为";
        sfd.RestoreDirectory = true;
        if (sfd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
          //注意：下面这一句不要往上写，会报错，原因打开的话，需要手动关闭
            // if ((mystream = sfd.OpenFile()) != null)


            file = System.IO.Path.GetFullPath(sfd.FileName);

            XmlDocument doc = new XmlDocument();
            doc.AppendChild(doc.CreateXmlDeclaration("1.0", "UTF-8", null));
            //创建最大的子节点
            XmlElement OneNode = doc.CreateElement("ChartData");
            //下面这一句也挺重要
            doc.AppendChild(OneNode);
            //得到所有的子控件
            UIElementCollection chartList = ChartGrid.Children;
            foreach (UIElement chart in chartList)
            {
                Type type = chart.GetType();
                if (type.ToString() == "BlueStarCharts.LineChart2D")
                {
                    LineChart2D L2D = chart as LineChart2D;

                    XmlElement TwoNode = doc.CreateElement("Data");
                    TwoNode.SetAttribute("Type", "2d");
                    TwoNode.SetAttribute("ChartXAxisTitle", L2D.XAxisTitle);
                    TwoNode.SetAttribute("ChartYAxisTitle", L2D.YAxisTitle);
                    TwoNode.SetAttribute("Name", L2D.ChartName);
                    TwoNode.SetAttribute("Theme", L2D.ChartTheme.ToString());

                    TwoNode.SetAttribute("ChartDDSPartition", L2D.DDSPartition);
                    TwoNode.SetAttribute("ChartDDSTopic", L2D.DDSTopic);
                    TwoNode.SetAttribute("ChartDDSLinePartition", L2D.DDSLinePartition);
                    TwoNode.SetAttribute("ChartDDSLineTopic", L2D.DDSLineTopic);


                    OneNode.AppendChild(TwoNode);
                }

                else if (type.ToString() == "BlueStarCharts.LineChart3D")
                {
                    LineChart3D L3D = chart as LineChart3D;

                    XmlElement TwoNode = doc.CreateElement("Data");
                    TwoNode.SetAttribute("Type", "3d");
                    TwoNode.SetAttribute("ChartXAxisTitle", L3D.XAxisTitle);
                    TwoNode.SetAttribute("ChartYAxisTitle", L3D.YAxisTitle);
                    TwoNode.SetAttribute("ChartZAxisTitle", L3D.ZAxisTitle);
                    TwoNode.SetAttribute("Name", L3D.ChartName);
                    TwoNode.SetAttribute("Theme", L3D.ChartTheme.ToString());

                    TwoNode.SetAttribute("ChartDDSPartition", L3D.DDSPartition);
                    TwoNode.SetAttribute("ChartDDSTopic", L3D.DDSTopic);
                    TwoNode.SetAttribute("ChartDDSLinePartition", L3D.DDSLinePartition);
                    TwoNode.SetAttribute("ChartDDSLineTopic", L3D.DDSLineTopic);
                    OneNode.AppendChild(TwoNode);
                }
                doc.Save(file);
            }

        }

    }

//读文件–OpenFileDialog
private void Read()
{
Stream myStream;
string file;
System.Windows.Forms.OpenFileDialog ofd = new System.Windows.Forms.OpenFileDialog();
ofd.Title = “打开”;
ofd.InitialDirectory = @”C:\”;
ofd.Filter = “All files(.)|.xml|All files(.)|.*”;
ofd.FilterIndex = 1;

        ofd.RestoreDirectory = true;
        if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            if ((myStream = ofd.OpenFile()) != null)
            {
                //得到文件
                file = System.IO.Path.GetFullPath(ofd.FileName)；
                //  file = System.IO.Path.GetExtension(ofd.FileName);
                XmlDocument doc = new XmlDocument();
                doc.Load(file);
                //第一节点
                XmlNode OneNode = doc.SelectSingleNode("ChartData");
                List<string> list = new List<string>();
                //选择所有的第二节点
                XmlNodeList TwoNodeList = OneNode.SelectNodes("Data");
                for (int i = 0; i < TwoNodeList.Count; i++)
                {
                    string str =   ((XmlElement)TwoNodeList[i]).GetAttribute("Type");
                    list.Add(str);
                }

                for (int i = 0; i < list.Count; i++)
                {
                    if (list[i] == "2d")
                    {
                        New2DChart();
                    }
                    if (list[i] == "3d")
                    {
                        New3DChart();
                    }
                }
                //得到所有的子控件
                UIElementCollection chartList = ChartGrid.Children;
                //遍历所有的节点

                //Test
                //遍历所有的节点
                for (int i = 0; i < TwoNodeList.Count; i++)
                { 
                    //遍历所有的控件
                    //for (int j = 0; j < chartList.Count; j++)
                    //{
                        Type type = chartList[i].GetType();
                        if (type.ToString() == "BlueStarCharts.LineChart2D")
                        {
                            if (((XmlElement)TwoNodeList[i]).GetAttribute("Type") == "2d")
                            {
                                LineChart2D L2D = chartList[i] as LineChart2D;

                                XmlElement twonode = TwoNodeList[i] as XmlElement;
                                string CXT = twonode.GetAttribute("ChartXAxisTitle");
                                string CYT = twonode.GetAttribute("ChartYAxisTitle");
                                string name = twonode.GetAttribute("Name");
                                string theme = twonode.GetAttribute("Theme");
                                string DP = twonode.GetAttribute("ChartDDSPartition");
                                string DT = twonode.GetAttribute("ChartDDSTopic");
                                string DLP = twonode.GetAttribute("ChartDDSLinePartition");
                                string DLT = twonode.GetAttribute("ChartDDSLineTopic");

                                var e = (KSChartThemeEnum)Enum.Parse(typeof(KSChartThemeEnum), theme);
                                //int ChangeTheme = int.Parse(theme);
                                L2D.XAxisTitle = CXT;
                                L2D.YAxisTitle = CYT;
                                L2D.ChartName = name;
                                L2D.ChartTheme = e;
                                L2D.DDSPartition = DP;
                                L2D.DDSTopic = DT;
                                L2D.DDSLinePartition = DLP;
                                L2D.DDSLineTopic = DLT;
                                //MessageBox.Show(CXT);
                                //MessageBox.Show(CYT);
                            }
                        }
                    else if (type.ToString() == "BlueStarCharts.LineChart3D")
                    {
                        if (((XmlElement)TwoNodeList[i]).GetAttribute("Type") == "3d")
                        {
                            LineChart3D L3D = chartList[i] as LineChart3D;

                            XmlElement twonode = TwoNodeList[i] as XmlElement;
                            string CXT = twonode.GetAttribute("ChartXAxisTitle");
                            string CYT = twonode.GetAttribute("ChartYAxisTitle");
                            string CZT = twonode.GetAttribute("ChartZAxisTitle");
                            string name = twonode.GetAttribute("Name");
                            string theme = twonode.GetAttribute("Theme");
                            string DP = twonode.GetAttribute("ChartDDSPartition");
                            string DT = twonode.GetAttribute("ChartDDSTopic");
                            string DLP = twonode.GetAttribute("ChartDDSLinePartition");
                            string DLT = twonode.GetAttribute("ChartDDSLineTopic");

                            var e = (KSChartThemeEnum3D)Enum.Parse(typeof(KSChartThemeEnum3D), theme);
                            //int ChangeTheme = int.Parse(theme);
                            L3D.XAxisTitle = CXT;
                            L3D.YAxisTitle = CYT;
                            L3D.ZAxisTitle = CZT;
                            L3D.ChartName = name;
                            L3D.ChartTheme = e;
                            L3D.DDSPartition = DP;
                            L3D.DDSTopic = DT;
                            L3D.DDSLinePartition = DLP;
                            L3D.DDSLineTopic = DLT;
                            //MessageBox.Show(CXT);
                            //MessageBox.Show(CYT);
                        }
                    }

                }
             }
            }
        }

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