How to programmatically form an observable collection and bind it to a datagrid

问题

I have a problem which i'd divide in two steps:

Problem1.

Form an observable collection of strings and bind it to a datagrid

ObservableCollection<string[]> octest = new ObservableCollection<string[]>();
var el = new string[6] {"1","2","3", "4", "5", "6" };
octest.Add(el);
octest.Add(el);
octest.Add(el);
dtgResults.ItemsSource = octest;

the problem is that the binding results in the image below:

Problem 2

The same but now with an array of strings but with mixed elements (e.g. 3 strings and 3 doubles)

thank you

--EDIT-- for CBreeze

I have done that:

  ObservableCollection<TestModel> t = new ObservableCollection<TestModel>();
  var t1 = new TestModel();
  t.Add(t1);
  t.Add(t1);
  t.Add(t1);
  dtgResults.ItemsSource = t;
 }
}

public class TestModel
{
  public TestModel()
  {
    TestDouble1 = new string[3];
    TestDouble1[0] = "A";
    TestDouble1[1] = "B";
    TestDouble1[2] = "C";
  }
  public string[] TestDouble1 { get; set; }
}

and the result is:

回答1:

from

programmatically add column & rows to WPF Datagrid

you can do that:

string[] columnLabels = new string[] { "Column 0", "Column 1", "Column 2", "Column 3", "Column 4", "Column 5" };

foreach (string label in columnLabels)
{
 DataGridTextColumn column = new DataGridTextColumn();
 column.Header = label;
 column.Binding = new Binding(label.Replace(' ', '_'));

 dtgResults.Columns.Add(column);
}

int[] ivalues = new int[] { 0, 1, 2, 3 };
string[] svalues = new string[] { "A", "B", "C", "D" };

dynamic row = new ExpandoObject();

for (int i = 0; i < 6; i++)
{

 switch (i)
 {
  case 0:
  case 1:
  case 2:
   string str = columnLabels[i].Replace(' ', '_');
   ((IDictionary<String, Object>)row)[str] = ivalues[i];
   break;

   case 3:
   case 4:
   case 5:
    string str2 = columnLabels[i].Replace(' ', '_');
    ((IDictionary<String, Object>)row)[str2] = svalues[i - 3];
    break;

 }
}

dtgResults.Items.Add(row);

回答2:

Bind your ObservableCollection to a Model;

ObservableCollection<TestModel> octest = new ObservableCollection<TestModel>();

Create your TestModel;

public class TestModel
{
    public double TestDouble1 { get; set; }
    public double TestDouble2 { get; set; }
    public double TestDouble3 { get; set; }
    public string TestString1 { get; set; }
    public string TestString2 { get; set; }
    public string TestString3 { get; set; }
}

You then need to actually create a TestModel....

TestModel newTestModel = new TestModel();

Add new values to TestModel.....

newTestModel.TestString1 = "Hello"
newTestModel.TestString2 = "Hello"
newTestModel.TestString3 = "Hello"

Finally add the new TestModel to the ObservableCollection;

octest.Add(newTestModel);

来源：https://stackoverflow.com/questions/35339551/how-to-programmatically-form-an-observable-collection-and-bind-it-to-a-datagrid

标签

wpf

data-binding

datagrid

observablecollection