如何在WPF DataGrid中显示数组元素？ [英] How can I display array elements in a WPF DataGrid?

问题描述

我正在尝试在WPF DataGrid中显示一系列行，其中每行包含一组布尔数组（其数量与所有行的数量相同，不是锯齿形的2D数组），我想显示为个别列，例如。

 名称|第1天|第2天|第3天|第4天|第5天|第6天| 
 ---------------------------------------------- ------------------- 
取出垃圾桶X | | X | | | X | 
支付账单| | | | | X | | 
提交自杀| | | | | | X | 
  

目前，我正在为DataGrid行使用此类：

  private class GridRow {
 public string Name {get;组; } 
 public char Day1 {get;组; } 
 public char Day2 {get;组; } 
 public char Day3 {get;组; } 
 public char Day4 {get;组; } 
 public char Day5 {get;组; } 
 public char Day6 {get;组; } 
 public char Day7 {get;组; } 
 public char Day8 {get;组; } 
 public char Day9 {get;组; } 
} 
  

在现实世界的情况下，使128个布尔值。它暂时完成工作（只要没有人创建128天的循环计划），但这是一个相当难看的解决方案。

我可以不知何故将一组布尔值提供给DataGrid？我已经看过有关实现ValueConverters的各种文章，但我不知道这是我需要的。

解决方案

我认为你必须处理这个代码...

示例：

测试类：

  public class TestRow 
 {
 private bool [] _values = new bool [10]; 
 public bool []值
 {
 get {return _values; } 
 set {_values = value; 
} 
 
 public TestRow（int seed）
 {
随机随机=新的随机（种子）; （int i = 0; i< Values.Length; i ++）
 {
值[i] = random.Next（0,2）== 0假：真
} 
} 
} 
  

如何生成测试数据;列：

  DataGrid grid = new DataGrid（）; 
 var data = new TestRow [] {new TestRow（1），new TestRow（2），new TestRow（3）}; 
 grid.AutoGenerateColumns = false; （int i = 0; i< data [0] .Values.Length; i ++）
 {
 var col = new DataGridCheckBoxColumn（）; 
 
 //这里我绑定到各种索引。 
 var binding = new Binding（Values [+ i +]）; 
 col.Binding = binding; 
 grid.Columns.Add（col）; 
} 
 grid.ItemsSource = data; 
  

看起来像什么（缺少标题和一切当然）

---

编辑：为了使上述代码更清洁，您应该在创建时统一使用的items-class中公开一个静态属性使用 data [0] .Values.Length 的数组，如果数据收集为空，则可能会引发异常。

I'm trying to display a series of rows in a WPF DataGrid where each row contains an array of booleans (the number of which is the same for all rows, it's not a jagged 2D array) that I want to display as individual columns, eg.

Name            | Day 1 | Day 2 | Day 3 | Day 4 | Day 5 | Day 6 |
-----------------------------------------------------------------
Bring out Trash |   X   |       |   X   |       |       |   X   |
Pay Bills       |       |       |       |       |   X   |       |
Commit Suicide  |       |       |       |       |       |   X   |

Currently, I'm using this class for my DataGrid rows:

private class GridRow {
  public string Name { get; set; }
  public char Day1 { get; set; }
  public char Day2 { get; set; }
  public char Day3 { get; set; }
  public char Day4 { get; set; }
  public char Day5 { get; set; }
  public char Day6 { get; set; }
  public char Day7 { get; set; }
  public char Day8 { get; set; }
  public char Day9 { get; set; }
}

In the real world case, make that 128 booleans. It gets the job done for the time being (for as long as nobody creates cyclic plans with a length over 128 days) but it's a rather ugly solution.

Can I somehow feed an array of booleans into the DataGrid? I've taken a look various articles on implementing ValueConverters, but I'm not sure that's what I need.

解决方案

I think you'll have to deal with code behind for this...

Example:

Test class:

public class TestRow
{
    private bool[] _values = new bool[10];
    public bool[] Values
    {
        get { return _values; }
        set { _values = value; }
    }

    public TestRow(int seed)
    {
        Random random = new Random(seed);
        for (int i = 0; i < Values.Length; i++)
        {
            Values[i] = random.Next(0, 2) == 0 ? false : true;
        }
    }
}

How to generate test data & columns:

DataGrid grid = new DataGrid();
var data = new TestRow[] { new TestRow(1), new TestRow(2), new TestRow(3) };
grid.AutoGenerateColumns = false;
for (int i = 0; i < data[0].Values.Length; i++)
{
    var col = new DataGridCheckBoxColumn();
    //Here i bind to the various indices.
    var binding = new Binding("Values[" + i + "]");
    col.Binding = binding;
    grid.Columns.Add(col);
}
grid.ItemsSource = data;

What that looks like (lacks headers and everything of course)

---

Edit: To make the above code cleaner you should expose a static property in your items-class which is used uniformly when creating the arrays, using data[0].Values.Length when creating the columns could obviously throw an exception if the data collection is empty.

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