Develop Reference

Prevent ' Process is terminated due to StackOverflowException' in C#

I have a program which builds a very large tree from input data and traverses it, both by recursion. I have tested the program on smaller inputs (and thus smaller trees) and it functions as intended. However when the input data is much larger i run into 'Process is terminated due to StackOverflowException'. I assume this is due to the stack running out of space. Is there any way to prevent this or do I have to switch to building the tree via iteration instead? Or perhaps I am missing a case of infinite recursion somewhere?
Here is the code:
class Program
{
static int[] tileColors;
static Color[] colors;
static int totalTiles;
static void Main(string[] args)
{
Stopwatch s = new Stopwatch();
s.Start();
string[] data = File.ReadAllLines("colors.txt");
totalTiles = int.Parse(data[0].Split(' ')[0]);
int totalColors = int.Parse(data[0].Split(' ')[1]);
string[] colorsRaw = data[1].Split(' ');
tileColors = new int[totalTiles];
for (int i = 0; i < totalTiles; i++)
{
tileColors[i] = int.Parse(colorsRaw[i]) - 1;
}
colors = new Color[totalColors];
for (int i = 3; i < data.Length; i++)
{
string[] raw = data[i].Split(' ');
int[] pair = new int[] { int.Parse(raw[0]) - 1, int.Parse(raw[1]) - 1 };
if (colors[pair[0]] == null)
colors[pair[0]] = new Color(pair[1]);
else
colors[pair[0]].pairs.Add(pair[1]);
if (colors[pair[1]] == null)
colors[pair[1]] = new Color(pair[0]);
else
colors[pair[1]].pairs.Add(pair[0]);
}
Tree t = new Tree();
t.root = new Node(0);
PopulateTree(t.root);
long ans = t.CountMatchingLeaves(t.root, totalTiles - 1) % 1000000007;
Console.WriteLine(ans);
s.Stop();
Console.WriteLine(s.ElapsedMilliseconds);
}
static void PopulateTree(Node root)
{
for (int i = root.tile + 1; i < totalTiles; i++)
{
if (colors[tileColors[i]] == null) continue;
if (colors[tileColors[i]].Compatible(tileColors[root.tile]))
{
var node = new Node(i);
root.children.Add(node);
PopulateTree(node);
}
}
}
}
class Color
{
public List<int> pairs = new List<int>();
public Color(int pair)
{
pairs.Add(pair);
}
public bool Compatible(int c)
{
return pairs.Contains(c);
}
}
class Node
{
public List<Node> children = new List<Node>();
public int tile;
public Node(int tile)
{
this.tile = tile;
}
}
class Tree
{
public Node root;
public List<Node> GetMatchingLeaves(Node root, int match)
{
if (root.children.Count == 0)
{
if (root.tile == match)
{
return new List<Node>() { root };
}
return new List<Node>();
}
List<Node> list = new List<Node>();
foreach(var c in root.children)
{
list.AddRange(GetMatchingLeaves(c, match));
}
return list;
}
public long CountMatchingLeaves(Node root, int match)
{
if (root.children.Count == 0)
{
if (root.tile == match)
{
return 1;
}
return 0;
}
long count = 0;
foreach (var c in root.children)
{
count += CountMatchingLeaves(c, match);
}
return count;
}
}

You can always rewrite recursion as iteration, usually by using a stack class rather than rely on your thread's stack. For your code it would look like this:
static void PopulateTree(Node start)
{
var nodes = new Stack<Node>();
nodes.Push(start);
while(nodes.Count != 0)
{
var root = nodes.Pop();
for (int i = root.tile + 1; i < totalTiles; i++)
{
if (colors[tileColors[i]] == null) continue;
if (colors[tileColors[i]].Compatible(tileColors[root.tile]))
{
var node = new Node(i);
root.children.Add(node);
nodes.Push(node);
}
}
}
}
The while loop checking for more items is the equivalent of your terminating condition in recursion.

Read Data from a CSV file

I am looking to store values from a CSV file with two Columns, I have the following class ReadFromCSVhandling the reading of the CSV file but I am having difficulty using this list to display the contents once a button is clicked. The code I have to read the CSV file is as follows;
namespace ELMFS
{
public class ReadFromCSV
{
static void ReadCSV(string[] args)
{
List<TextSpeak> TxtSpk = File.ReadAllLines(#"C:\textwords.csv")
.Skip(1)
.Select(t => TextSpeak.FromCsv(t))
.ToList();
}
}
public class TextSpeak
{
string Abreviated;
string Expanded;
public static TextSpeak FromCsv(string csvLine)
{
string[] TxtSpk = csvLine.Split(',');
TextSpeak textSpeak = new TextSpeak();
textSpeak.Abreviated = TxtSpk[0];
textSpeak.Expanded = TxtSpk[1];
return textSpeak;
}
}
}
I am trying to display the textSpeak.Abreviated in a message box but cannot seem to access it from the WPF window.
How do I use this list in other windows within the application?
any advice would be appreciated!
Thanks in advance!

First, ReadCSV method should return the generated List object (or you cannot use the list anywhere else).
Second, TextSpeak class should have properties so that you can access its member variables outside the class.
I.e. something like this should work:
namespace ELMFS
{
public class ReadFromCSV
{
public static List<TextSpeak> ReadCSV(string[] args)
{
List<TextSpeak> TxtSpk = File.ReadAllLines(#"C:\textwords.csv")
.Skip(1)
.Select(t => TextSpeak.FromCsv(t))
.ToList();
return TxtSpk;
}
}
public class TextSpeak
{
public string Abreviated { get; private set; }
public string Expanded { get; private set; }
public static TextSpeak FromCsv(string csvLine)
{
string[] TxtSpk = csvLine.Split(',');
TextSpeak textSpeak = new TextSpeak();
textSpeak.Abreviated = TxtSpk[0];
textSpeak.Expanded = TxtSpk[1];
return textSpeak;
}
}
}

private void Display(int count)
{
textBox1.Text = "";
for (int i = 0; i <= count ; i++)
{
textBox1.Text += ((dataGridView1.Rows[i].Cells[1].Value).ToString()) + (dataGridView1.Rows[i].Cells[2].Value.ToString()) + Environment.NewLine;
}
}
private void Form1_Load(object sender, EventArgs e)
{
try
{
// your code here
string CSVFilePathName =Path.GetDirectoryName(Application.ExecutablePath).Replace(#"\bin\Debug", #"\NewFolder1\TEST.csv");
string[] Lines = File.ReadAllLines(CSVFilePathName);
string[] Fields;
Fields = Lines[0].Split(new char[] { ',' });
int Cols = Fields.GetLength(0);
DataTable dt = new DataTable();
//1st row must be column names; force lower case to ensure matching later on.
for (int i = 0; i < Cols; i++)
dt.Columns.Add(Fields[i].ToLower(), typeof(string));
DataRow Row;
for (int i = 1; i < Lines.GetLength(0); i++)
{
Fields = Lines[i].Split(new char[] { ',' });
Row = dt.NewRow();
for (int f = 0; f < Cols; f++)
Row[f] = Fields[f];
dt.Rows.Add(Row);
}
dataGridView1.DataSource = dt;
int count = 0;
if (dataGridView1.RowCount > 0)
{
count = dataGridView1.Rows.Count;
}
buttons = new Button[count];
for (int i = 0; i <count; i++)
{
buttons[i] = new Button();
buttons[i].Name = "buttons_Click" + i.ToString();
buttons[i].Text = "Click";
buttons[i].Click += new EventHandler(buttons_Click);
this.Controls.Add(buttons[i]);
buttons[i].Visible = false;
}
buttons[0].Visible = true;
// buttons[1].Visible = true;
}
catch (Exception ex)
{
MessageBox.Show("Error is " + ex.ToString());
throw;
}
}
private void buttons_Click(object sender, EventArgs e)
{
int count = dataGridView1.Rows.Count-1;
if(c <= count)
{
if (buttons[c].Name == "buttons_Click" + c.ToString())
{
buttons[c].Visible = false;
int j = c;
Display(j);
if (c != count)
{
c = c + 1;
buttons[c].Visible = true;
}
}
}
if (c == count)
{
buttons[0].Visible = true;
}
}
}
}

C# reference array assignment issue

I'm having a little trouble reading values in from a database and assigning them to an array. It seem to work in my unit tests, but in practice some values are missing.
Here's my database code:
private void GetParameterValuesFromDatabase()
{
this.parameterValues = (from DataRow r in this.database.RunCommand("select * from KST_PARAM_VALUES v join DM_PARM_NAME p on v.PARM_NAME_KEY = p.PARM_NAME_KEY").Rows
where (int)r["SCENARIO_KEY"] == this.scenario.ScenarioKey
select new DatabaseParameter
{
ParameterValuesKey = r.Field<int>(0),
ProfileType = r.Field<string>(1),
ScenarioKey = r.Field<int>(2),
StressEditorKey = r.Field<int>(3),
StressClassKey = r.Field<int>(4),
PeriodKey = r.Field<int>(5),
ParameterNameKey = r.Field<int>(6),
ParameterValue = r.Field<double>(7),
ActiveStress = (r.Field<string>(8) == "Y") ? true : false,
ParameterKey = (int)r["PARM_NUMBER"]
}).ToDictionary(r => r.ParameterValuesKey, r => r);
}
Not having any issues with this part of my code, just showing for completeness.
private void LoadParameters()
{
this.GetParameterValuesFromDatabase();
// TODO: Assuming 9 periods for now, change to allow for variable periods
for (int i = 1; i <= MaxNumberOfStressPeriods; i++)
{
this.parametersByPeriod.Add(i, this.parameterValues.Where(t => t.Value.PeriodKey == i).ToDictionary(t => t.Key, t => t.Value));
}
Log.Instance.LogMessage(LogLevel.Debug, "Created parameter dictionaries from database");
// For every stress editor in the dictionary of stress editors
foreach (KeyValuePair<int, ClassList> ed in this.stressParams)
{
// For every type of class selector
foreach (ClassSelector c in Enum.GetValues(typeof(ClassSelector)))
{
// For each of the classes within each class list within the editor
for (int i = 0; i < ed.Value.ClassLists[c].Count; i++)
{
string className = ed.Value.ClassLists[c][i].Name;
// For each double array in each class
foreach (KeyValuePair<int, double[]> t in ed.Value.ClassLists[c][i].ClassVariables.EditorParameters)
{
double[] values = this.GetParameterValues(t.Key, ed.Key, className);
BasicStressEditorVariables.AddParameters(values, ed.Value, className, t.Key);
}
}
}
}
}
}
Above shows the overall LoadParameters() method.
Below we have some code that selects 9 values from the dictionary constructed from the database, ready to be added to the array.
private double[] GetParameterValues(int paramKey, int editorKey, string className)
{
double[] values = new double[9];
for (int i = 1; i <= MaxNumberOfStressPeriods; i++)
{
Dictionary<int, DatabaseParameter> temp = this.parametersByPeriod[i];
foreach (KeyValuePair<int, DatabaseParameter> d in temp)
{
if (d.Value.ParameterKey == paramKey && d.Value.PeriodKey == i && d.Value.StressEditorKey == editorKey && d.Value.ProfileType == className)
{
values[i - 1] = d.Value.ParameterValue;
}
}
}
return values;
}
Below shows getting the destination array from the dictionary, as indexes cannot be passed by reference
public static void AddParameters(double[] values, ClassList editor, string className, int paramKey)
{
// TODO: Maybe search all lists to eliminate the need for the class selector as a parameter
// TODO: Will throw an exception when nothing is found. Handle it
ParameterClass p = null;
foreach (ClassSelector c in Enum.GetValues(typeof(ClassSelector)))
{
p = editor.ClassLists[c].FirstOrDefault(f => f.Name == className);
if (p != null)
{
break;
}
}
// TODO: Notify that could not be found
if (p == null)
{
Log.Instance.LogMessage(LogLevel.Error, $"Unable to find class {className}");
return;
}
double[] dest = p.ClassVariables.editorParameters[paramKey];
AddParameterValues(values, ref dest);
}
And here's the AddParameterValues() method:
private static void AddParameterValues(double[] values, ref double[] destination)
{
if (values.Length != destination.Length)
{
return;
}
for (int i = 0; i < values.Length; i++)
{
destination[i] = values[i];
}
}
Debugging shows that some values are being loaded into the destination array, but some aren't. Could anyone tell me why this is? Or if not, point me toward some material?
Thank you for your time

I'm not that C# specialist but looking to following code as a C programmer
private double[] GetParameterValues(int paramKey, int editorKey, string className)
{
double[] values = new double[9];
//...
return values;
}
I would assume that the lifetime of values is only within the function GetParameterValues and the function GetParameterValues delivers the caller with reference to a dead variable.
What if you change the prototype to something like
private void GetParameterValues(ref double[] values, int paramKey, int editorKey, string className)

What C# template engine that has clean separation between HTML and control code?

What C# template engine
that uses 'pure' HTML having only text and markers
sans any control flow like if, while, loop or expressions,
separating html from control code ?
Below is the example phone book list code,
expressing how this should be done:
string html=#"
<html><head><title>#title</title></head>
<body>
<table>
<tr>
<td> id</td> <td> name</td> <td> sex</td> <td>phones</td>
</tr><!--#contacts:-->
<tr>
<td>#id</td> <td>#name</td> <td>#sex</td>
<td>
<!--#phones:-->#phone <br/>
<!--:#phones-->
</td>
</tr><!--:#contacts-->
</table>
</body>
</html>";
var contacts = from c in db.contacts select c;
Marker m = new Marker(html);
Filler t = m.Mark("title");
t.Set("Phone book");
Filler c = m.Mark("contacts", "id,name,sex");
// **foreach** expressed in code, not in html
foreach(var contact in contacts) {
int id = contact.id;
c.Add(id, contact.name, contact.sex);
Filler p = c.Mark("phones", "phone");
var phones = from ph in db.phones
where ph.id == id
select new {ph.phone};
if (phones.Any()) {
foreach(var ph in phones) {
p.Add(ph);
}
} else {
fp.Clear();
}
}
Console.Out.WriteLine(m.Get());

Use this code:
Templet.cs
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
namespace templaten.com.Templaten
{
public class tRange
{
public int head, toe;
public tRange(int _head, int _toe)
{
head = _head;
toe = _toe;
}
}
public enum AType
{
VALUE = 0,
NAME = 1,
OPEN = 2,
CLOSE = 3,
GROUP = 4
}
public class Atom
{
private AType kin;
private string tag;
private object data;
private List<Atom> bag;
public Atom(string _tag = "",
AType _kin = AType.VALUE,
object _data = null)
{
tag = _tag;
if (String.IsNullOrEmpty(_tag))
_kin = AType.GROUP;
kin = _kin;
if (_kin == AType.GROUP)
bag = new List<Atom>();
else
bag = null;
data = _data;
}
public AType Kin
{
get { return kin; }
}
public string Tag
{
get { return tag; }
set { tag = value; }
}
public List<Atom> Bag
{
get { return bag; }
}
public object Data
{
get { return data; }
set { data = value; }
}
public int Add(string _tag = "",
AType _kin = AType.VALUE,
object _data = null)
{
if (bag != null)
{
bag.Add(new Atom(_tag, _kin, _data));
return bag.Count - 1;
}
else
{
return -1;
}
}
}
public class Templet
{
private string content;
string namepat = "\\w+";
string justName = "(\\w+)";
string namePre = "#";
string namePost = "";
string comment0 = "\\<!--\\s*";
string comment1 = "\\s*--\\>";
private Atom tokens; // parsed contents
private Dictionary<string, int> iNames; // name index
private Dictionary<string, tRange> iGroups; // groups index
private Atom buffer; // output buffer
private Dictionary<string, int> _iname; // output name index
private Dictionary<string, tRange> _igroup; // output index
public Templet(string Content = null)
{
Init(Content);
}
private int[] mark(string[] names, string group)
{
if (names == null || names.Length < 1) return null;
tRange t = new tRange(0, buffer.Bag.Count - 1);
if (group != null)
{
if (!_igroup.ContainsKey(group)) return null;
t = _igroup[group];
}
int[] marks = new int[names.Length];
for (int i = 0; i < marks.Length; i++)
marks[i] = -1;
for (int i = t.head; i <= t.toe; i++)
{
if (buffer.Bag[i].Kin == AType.NAME)
{
for (int j = 0; j < names.Length; j++)
{
if (String.Compare(
names[j],
buffer.Bag[i].Tag,
true) == 0)
{
marks[j] = i;
break;
}
}
}
}
return marks;
}
public Filler Mark(string group, string names)
{
Filler f = new Filler(this, names);
f.di = mark(f.names, group);
f.Group = group;
tRange t = null;
if (_igroup.ContainsKey(group)) t = _igroup[group];
f.Range = t;
return f;
}
public Filler Mark(string names)
{
Filler f = new Filler(this, names);
f.di = mark(f.names, null);
f.Group = "";
f.Range = null;
return f;
}
public void Set(int[] locations, object[] x)
{
int j = Math.Min(x.Length, locations.Length);
for (int i = 0; i < j; i++)
{
int l = locations[i];
if ((l >= 0) && (buffer.Bag[l] != null))
buffer.Bag[l].Data = x[i];
}
}
public void New(string group, int seq = 0)
{
// place new group copied from old group just below it
if (!( iGroups.ContainsKey(group)
&& _igroup.ContainsKey(group)
&& seq > 0)) return;
tRange newT = null;
tRange t = iGroups[group];
int beginRange = _igroup[group].toe + 1;
for (int i = t.head; i <= t.toe; i++)
{
buffer.Bag.Insert(beginRange,
new Atom(tokens.Bag[i].Tag,
tokens.Bag[i].Kin,
tokens.Bag[i].Data));
beginRange++;
}
newT = new tRange(t.toe + 1, t.toe + (t.toe - t.head + 1));
// rename past group
string pastGroup = group + "_" + seq;
t = _igroup[group];
buffer.Bag[t.head].Tag = pastGroup;
buffer.Bag[t.toe].Tag = pastGroup;
_igroup[pastGroup] = t;
// change group indexes
_igroup[group] = newT;
}
public void ReMark(Filler f, string group)
{
if (!_igroup.ContainsKey(group)) return;
Map(buffer, _iname, _igroup);
f.di = mark(f.names, group);
f.Range = _igroup[group];
}
private static void Indexing(string aname,
AType kin,
int i,
Dictionary<string, int> dd,
Dictionary<string, tRange> gg)
{
switch (kin)
{
case AType.NAME: // index all names
dd[aname] = i;
break;
case AType.OPEN: // index all groups
if (!gg.ContainsKey(aname))
gg[aname] = new tRange(i, -1);
else
gg[aname].head = i;
break;
case AType.CLOSE:
if (!gg.ContainsKey(aname))
gg[aname] = new tRange(-1, i);
else
gg[aname].toe = i;
break;
default:
break;
}
}
private static void Map(Atom oo,
Dictionary<string, int> dd,
Dictionary<string, tRange> gg)
{
for (int i = 0; i < oo.Bag.Count; i++)
{
string aname = oo.Bag[i].Tag;
Indexing(oo.Bag[i].Tag, oo.Bag[i].Kin, i, dd, gg);
}
}
public void Init(string Content = null)
{
content = Content;
tokens = new Atom("", AType.GROUP);
iNames = new Dictionary<string, int>();
iGroups = new Dictionary<string, tRange>();
// parse content into tokens
string namePattern = namePre + namepat + namePost;
string patterns =
"(?<var>" + namePattern + ")|" +
"(?<head>" + comment0 + namePattern + ":" + comment1 + ")|" +
"(?<toe>" + comment0 + ":" + namePattern + comment1 + ")";
Regex jn = new Regex(justName, RegexOptions.Compiled);
Regex r = new Regex(patterns, RegexOptions.Compiled);
MatchCollection ms = r.Matches(content);
int pre = 0;
foreach (Match m in ms)
{
tokens.Add(content.Substring(pre, m.Index - pre));
int idx = -1;
if (m.Groups.Count >= 3)
{
string aname = "";
MatchCollection x = jn.Matches(m.Value);
if (x.Count > 0 && x[0].Groups.Count > 1)
aname = x[0].Groups[1].ToString();
AType t = AType.VALUE;
if (m.Groups[1].Length > 0) t = AType.NAME;
if (m.Groups[2].Length > 0) t = AType.OPEN;
if (m.Groups[3].Length > 0) t = AType.CLOSE;
if (aname.Length > 0)
{
tokens.Add(aname, t);
idx = tokens.Bag.Count - 1;
}
Indexing(aname, t, idx, iNames, iGroups);
}
pre = m.Index + m.Length;
}
if (pre < content.Length)
tokens.Add(content.Substring(pre, content.Length - pre));
// copy tokens into buffer
buffer = new Atom("", AType.GROUP);
for (int i = 0; i < tokens.Bag.Count; i++)
buffer.Add(tokens.Bag[i].Tag, tokens.Bag[i].Kin);
// initialize index of output names
_iname = new Dictionary<string, int>();
foreach (string k in iNames.Keys)
_iname[k] = iNames[k];
// initialize index of output groups
_igroup = new Dictionary<string, tRange>();
foreach (string k in iGroups.Keys)
{
tRange t = iGroups[k];
_igroup[k] = new tRange(t.head, t.toe);
}
}
public string Get()
{
StringBuilder sb = new StringBuilder("");
for (int i = 0; i < buffer.Bag.Count; i++)
{
switch (buffer.Bag[i].Kin)
{
case AType.VALUE:
sb.Append(buffer.Bag[i].Tag);
break;
case AType.NAME:
sb.Append(buffer.Bag[i].Data);
break;
case AType.OPEN:
case AType.CLOSE:
break;
default: break;
}
}
return sb.ToString();
}
}
public class Filler
{
private Templet t = null;
public int[] di;
public string[] names;
public string Group { get; set; }
public tRange Range { get; set; }
private int seq = 0;
public Filler(Templet tl, string markers = null)
{
t = tl;
if (markers != null)
names = markers.Split(new char[] { ',' },
StringSplitOptions.RemoveEmptyEntries);
else
names = null;
}
public void init(int length)
{
di = new int[length];
for (int i = 0; i < length; i++)
di[i] = -1;
seq = 0;
Group = "";
Range = null;
}
// clear contents inside marked object or group
public void Clear()
{
object[] x = new object[di.Length];
for (int i = 0; i < di.Length; i++)
x[i] = null;
t.Set(di, x);
}
// set value for marked object,
// or add row to group and set value to columns
public void Set(params object[] x)
{
t.Set(di, x);
}
public void Add(params object[] x)
{
if (Group.Length > 0)
{
t.New(Group, seq);
++seq;
t.ReMark(this, Group);
}
t.Set(di, x);
}
}
}
Testing program
Program.cs
Templet m = new Templet(html);
Filler f= m.Mark("title");
f.Set("Phone book");
Filler fcontacts = m.Mark("contacts", "id,name,sex,phone");
fcontacts.Add(1, "Akhmad", "M", "123456");
fcontacts.Add(2, "Barry", "M", "234567");
fcontacts.Add(1, "Charles", "M", "345678");
Console.Out.WriteLine(m.Get());
Still can't do nested loop- yet.

Just use ASP.NET. Whether you use webforms or MVC, it's super easy to have C# in your .cs files, and HTML in your .aspx files.
As with anything in programming, it's 99% up to you to do things right. Flexible UI engines aren't going to enforce that you follow good coding practices.

In principle most any template engine you choose can separate HTML from control logic with the proper architecture. using an MVC (Or MVVM) pattern, if you construct your model in such a way that the controller contains the if/then logic instead of the view you can eliminate it from the view.
That said, the syntax you use is very close to Razor syntax which is easily available for ASP.NET MVC through NuGet packages.

I totally hear you. I built SharpFusion, which has some other stuff in it but if you look for the template.cs file you will see the handler that parses a HTML file and simply replaces out tokens with values that you've made in c#.
Because no XML parsing is done like ASP.NET the framework loads much faster than even an MVC site.
Another alternative is ServiceStack.

C# Creating an array of Fields

Hey!
I want to create an array of fields. however my code return an error of the following: Field 'WindowsFormsApplication1.Form1.fieldArray' is never assigned to, and will always have its default value null.
any suggestion to how I can solve this error?
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.IO;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
private Field[] fieldArray;
private Field f;
public Form1()
{
InitializeComponent();
}
private void populateTree(string path, TreeNode tv1)
{
string[] dir = Directory.GetDirectories(path);
foreach (string d in dir)
{
string entry = Path.GetFileName(d);
TreeNode t = tv1.Nodes.Add("Folder", entry, 0);
populateTree(d, t);
}
string[] files = Directory.GetFiles(path);
foreach (string f in files)
{
string entry = Path.GetFileName(f);
tv1.Nodes.Add(f, entry, 1);
}
}
private void Form1_Load(object sender, EventArgs e)
{
//populate the tree
TreeNode t = treeView1.Nodes.Add("Units");
populateTree(#"..\units\", t);
f = new Field();
for (int i = 0; i < 10; i++)
{
fieldArray[i] = new Field();
}
fieldArray[1].label.AutoSize = true;
fieldArray[1].label.Location = new System.Drawing.Point(323, 9);
fieldArray[1].label.Name = "Programtittle";
fieldArray[1].label.Text = "UAI UnitDef Editor";
this.Controls.Add(fieldArray[1].label);
int clabel = 36;
//fieldArray[1].varName = new string[] { "unitName", "name", "description" }; //define labels
//popluate label
for (int i = 1; i < fieldArray[i].varName.Length; i++)
{
fieldArray[i].label = new Label();
fieldArray[i].label.AutoSize = true;
fieldArray[i].label.Location = new System.Drawing.Point(323, clabel);
fieldArray[i].label.Name = "label";
this.Controls.Add(fieldArray[i].label);
fieldArray[i].label.Text = fieldArray[i].varName[i];
clabel = clabel + 26;
}
//populate textbox
int cbox = 33;
for (int i = 0; i < fieldArray[i].varName.Length; i++)
{
fieldArray[i].txtBox = new TextBox();
fieldArray[i].txtBox.Location = new System.Drawing.Point(380, cbox);
fieldArray[i].txtBox.Name = "txtBox";
fieldArray[i].txtBox.Size = new System.Drawing.Size(100, 50);
this.Controls.Add(fieldArray[i].txtBox);
cbox = cbox + 26;
}
}
private void populateLabelTxtBox(string path)
{
//f.txtBox.Multiline = true; //added for testing purpose;
//read,split file
string text = System.IO.File.ReadAllText(path);
char[] delimiters = new char[] { '{', '=', ';', '}' };
string[] parts = text.Split(delimiters, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < parts.Length; i++)
{
fieldArray[i].txtBox.Text = parts[i];
}
}
private void treeView1_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
{
if (treeView1.SelectedNode.Name != "Folder")
{
string text = System.IO.File.ReadAllText(treeView1.SelectedNode.Name);
//f.txtBox.Text = text;
populateLabelTxtBox(treeView1.SelectedNode.Name);
}
}
}
}

A list might be easier than an array, but: you are assigning items to a null array; once you know the number you need, create the array first:
fieldArray = new Field[10];      
for (int i = 0; i < 10; i++)
{...}
However, personally I'd use a list:
private readonly List<Field> fields = new List<Field>();
...
fields.Add(someField);

You never initialize fieldArray
//Change
private Field[] fieldArray;
to
private Field[] fieldArray = new Field[10];

You never initialized fieldArray. Something like fieldArray = new Field[10]; in the constructor of your Form should do it.

Before you try to access elements in the fieldArray you have to initialize the array like so:
fieldArray = new Field[/*size of the array*/];
However, be careful to create an array large enough to store all your fields. Suppose you create a Field[5] array of 5 elements, and you try to assign a value to fieldArray[5] you will get an OutOfBounds exception.

Before doing your loop where you initialize each element of the array, you need to initialize the array itself:
fieldArray = new Field[10]; // Create this with the appropriate size
for (int i = 0; i < 10; i++)
{
fieldArray[i] = new Field();
}
On a different note, you're never actually setting fieldArray[0] - I suspect your code that is explicitly setting fieldArray[1].XXX should be working on element 0.

Initialize your array when you declare it:
private Field[] fieldArray = new Field[100]; // size == 100

I don't see any line that assigns the array: like
int number_of_elements = 100;
fieldArray = new Field[number_of_elements];
if the number of fields is dynamic I would use an ArrayList, like
List fieldArray = new List();
and then add elements to it:
fieldArray.Add(...)

You must initialize your array
fieldArray = new Field[10];

fieldArray[i] = new Field();
The above code makes you think that the array is already initialized, but actually it has not. You need to have something like the following to allocate some memory for the array.
fieldArray = new Field[/*length or size*/];