问题
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.
回答1:
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.
来源:https://stackoverflow.com/questions/5582226/how-can-i-display-array-elements-in-a-wpf-datagrid