怎么循环遍历结构体？

Question

 public struct EconomicPara
    {
        public double CityBuildingTax;
        public double EducationTax;
        public double ElectionCost;
        public int MeasureUnUsefulDays;
        public int MeasureUsefulDays;
        public double MineCost;
        public double OilChangeCost;
        public double OilHandleCost;
        public double OilPrice;
        public int ProductionBaseLineDays;
        public double PutInError;
        public double ResoursesTax;
        public double StoreCost;
        public double ValueAddedTax;
        public double WaterCost;
        public double[] OilProductBaseLine;
        public double[] OilPerDay;
        public int OilPerDayCount;
        public int MeasureCount;
        public int[] MeasureSign;
        public double[] MeasureCost;
        public DateTime[] OilProductionDay;
        public int SpanYearsUseful;
        public bool[] MeasureUseful;
        public bool[] MeasureEconomicUseful;
        public double[] InOutRadio;
        public int[] MeasureDays;
        public DateTime[] MeasureStartDay;
    }要遍历这个结构体把里边的数据写到XML中，怎么遍历啊？
大侠们支支招

Answer 1

反射...不过你这个就这么点儿字段，要是没有很多不同的struct，多写几句有什么问题？

Answer 2

private void button1_Click(object sender, EventArgs e)
        {
            Type type = typeof(TEmployee);
            foreach (FieldInfo mi in type.GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
                richTextBox1.Text += "\r\n" + mi.Name;
        }
        struct TEmployee
        {
            string idno;
            string name;
            int age;
            string memo;
        }
试试这个吧，刚找的

Answer 3

除了反射使用
this.GetType().Members； 等
以外 你还可以考虑使用自定义 迭代器比如public struct EconomicPara
    {
        public double CityBuildingTax;
        public double EducationTax;
        public double ElectionCost;
        public int MeasureUnUsefulDays;
        public int MeasureUsefulDays;
        public double MineCost;
        public double OilChangeCost;
        public double OilHandleCost;
        public double OilPrice;
        public int ProductionBaseLineDays;
        public double PutInError;
        public double ResoursesTax;
        public double StoreCost;
        public double ValueAddedTax;
        public double WaterCost;
        public double[] OilProductBaseLine;
        public double[] OilPerDay;
        public int OilPerDayCount;
        public int MeasureCount;
        public int[] MeasureSign;
        public double[] MeasureCost;
        public DateTime[] OilProductionDay;
        public int SpanYearsUseful;
        public bool[] MeasureUseful;
        public bool[] MeasureEconomicUseful;
        public double[] InOutRadio;
        public int[] MeasureDays;
        public DateTime[] MeasureStartDay;
    }
    public static class ex {
        public static IEnumerable<object> GetMember(this EconomicPara ep) {
            yield return ep.CityBuildingTax;
            yield return ep.EducationTax;
            yield return ep.ElectionCost;
            //yeild return ep.InOutRadio;
            yield return ep.MeasureCost;
            yield return ep.MeasureCount;
            //...挨到写完ep所有的成员当然你可以根据成员类型自己酌情搞一搞。
        }
    }
使用扩展方法搞定，不用修改原来定义

Answer 4

  //添加测试数据
        private void button1_Click(object sender, EventArgs e)
        {
            List<Test> li=new List<Test>();
            Test t = new Test();
            t.Name = "test";
            t.Pwd = "test";
            t.Age = 18;
            li.Add(t);
            this.getList(li);
            
        }
        //遍历
        private void getList(List<Test> li)
        {
            foreach (Test dinosaur in li)
            {
                MessageBox.Show(dinosaur.Name + dinosaur.Pwd + dinosaur.Age.ToString());
            }
        }
    public struct Test
    {
        private string name;        public string Name
        {
            get { return name; }
            set { name = value; }
        }
        private string pwd;        public string Pwd
        {
            get { return pwd; }
            set { pwd = value; }
        }
        private int age;        public int Age
        {
            get { return age; }
            set { age = value; }
        }
    }用泛型做的

Answer 5

JackLeiMM,不好意思，我没说明白需求，我有很多不同的structliherun
(菜鸟路过)
这位大侠，mi.GetValue(myobject)怎么接到数组的值？

Answer 6

struct TEmployee
        {
            string idno;
            string name;
            int age;
            string memo;
            string []myCount;
        }
richTextBox1.Text += "\r\n" + mi.Name+mi.GetValue(myObject);

Answer 7

晕，还要想吗？既然是要写到xml里的，当然用XMLSerializer最方便了。

Answer 8

用其他方法虽然能解决问题，但是耦合度很高，如果你的struct的定义改变的话，其他类也要修改。

Answer 9

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Reflection;namespace WindowsApplication183
{
    public partial class Form1 : Form
    {
        public struct EconomicPara
        {
            public double CityBuildingTax;
            public double EducationTax;
            public double ElectionCost;
            public int MeasureUnUsefulDays;
            public int MeasureUsefulDays;
            public double MineCost;
            public double OilChangeCost;
            public double OilHandleCost;
            public double OilPrice;
            public int ProductionBaseLineDays;
            public double PutInError;
            public double ResoursesTax;
            public double StoreCost;
            public double ValueAddedTax;
            public double WaterCost;
            public double[] OilProductBaseLine;
            public double[] OilPerDay;
            public int OilPerDayCount;
            public int MeasureCount;
            public int[] MeasureSign;
            public double[] MeasureCost;
            public DateTime[] OilProductionDay;
            public int SpanYearsUseful;
            public bool[] MeasureUseful;
            public bool[] MeasureEconomicUseful;
            public double[] InOutRadio;
            public int[] MeasureDays;
            public DateTime[] MeasureStartDay;
        }        public Form1()
        {
            InitializeComponent();            EconomicPara EP = new EconomicPara();
            EP.CityBuildingTax = 1;
            EP.EducationTax = 2;
            EP.ElectionCost = 3;
            EP.InOutRadio = new double[] { 4, 44 };
            EP.MeasureCost = new double[] { 5, 55 };
            EP.MeasureCount = 6;
            EP.MeasureDays = new int[] { 7, 77 };
            EP.MeasureEconomicUseful = new bool[] { true };
            EP.MeasureSign = new int[] { 9, 99 };
            EP.MeasureStartDay = new DateTime[] { DateTime.Now };
            EP.MeasureUnUsefulDays = 11;
            EP.MeasureUseful = new bool[] { false };
            EP.MeasureUsefulDays = 13;
            EP.MineCost = 14;
            EP.OilChangeCost = 15;
            EP.OilHandleCost = 16;
            EP.OilPerDay = new double[] { 17, 1717 };
            EP.OilPerDayCount = 18;
            EP.OilPrice = 19;
            EP.OilProductBaseLine = new double[] { 20, 2020 };
            EP.OilProductionDay = new DateTime[] { DateTime.Now };
            EP.ProductionBaseLineDays = 22;
            EP.PutInError = 23;
            EP.ResoursesTax = 24;
            EP.SpanYearsUseful = 25;
            EP.StoreCost = 26;
            EP.ValueAddedTax = 27;
            EP.WaterCost = 28;            foreach (FieldInfo FI in this.GetType().GetNestedType("EconomicPara").GetFields())
            {
                Object Value = FI.GetValue(EP);                String S = "字段: " + FI.Name + Environment.NewLine
                    + "类型: " + FI.FieldType.Name + Environment.NewLine
                    + "值: " + Value.ToString() + Environment.NewLine;                if (Value.GetType().IsArray)
                {
                    Array A = (Array)Value;
                    S += "子值: ";                    for (int i = 0; i < A.Length; i++)
                    {
                        S += A.GetValue(i).ToString();
                        if (i < A.Length - 1)
                            S += ",";
                    }
                }                MessageBox.Show(S);
            }
        }
    }
}

Answer 10

可以！
你可以用序列化类，直接就可以写到XML文件里了，而且还可以直接从XML文件里，读出来，反序列化成类实例给你一段序列化的代码 public static string ObjectToXML( Object Instance )
{
MemoryStream stream = null;
TextWriter writer = null;
string ObjectXml = string.Empty;
try
{
stream = new MemoryStream(); // read xml in memory
writer = new StreamWriter( stream, Encoding.UTF8 ); // get serialise object
Type t = Instance.GetType();
XmlSerializer serializer = new XmlSerializer( t ); XmlSerializerNamespaces xsn = new XmlSerializerNamespaces();
xsn.Add( string.Empty, string.Empty ); serializer.Serialize( writer, Instance, xsn ); // read object
int count = ( int )stream.Length; // saves object in memory stream
byte[] arr = new byte[count];
stream.Seek( 0, SeekOrigin.Begin );
// copy stream contents in byte array
stream.Read( arr, 0, count );
//UnicodeEncoding utf = new UnicodeEncoding(); // convert byte array to string
UTF8Encoding utf = new UTF8Encoding();
ObjectXml = utf.GetString( arr ).Trim();
}
catch ( Exception ex )
{
string ss = ex.Message;
}
finally
{
if ( stream != null && stream.Length > 0 )
{
stream.Close();
}
if ( writer != null )
{
writer.Close();
}
} return ObjectXml;
}使用就是
string xml = ObjectToXML(结构体变量);