I have an array, arrStudents, that contains my students' age, GPA, and name like so:
arrStudents[0].Age = "8"
arrStudents[0].GPA = "3.5"
arrStudents[0].Name = "Bob"
I tried to bind arrStudents to a DataGridView like so:
dataGridView1.DataSource = arrStudents;
But the contents of the array do NOT show up in the control. Am I missing something?
As with Adolfo, I've verified that this works. There is nothing wrong in the code shown, so the problem must be in the code you aren't showing.
My guess: Age etc are not public properties; either they are internal or they are fields, i.e. public int Age; instead of public int Age {get;set;}.
Here's your code working for both a well-typed array and an array of anonymous types:
using System;
using System.Linq;
using System.Windows.Forms;
public class Student
{
public int Age { get; set; }
public double GPA { get; set; }
public string Name { get; set; }
}
internal class Program
{
[STAThread]
public static void Main() {
Application.EnableVisualStyles();
using(var grid = new DataGridView { Dock = DockStyle.Fill})
using(var form = new Form { Controls = {grid}}) {
// typed
var arrStudents = new[] {
new Student{ Age = 1, GPA = 2, Name = "abc"},
new Student{ Age = 3, GPA = 4, Name = "def"},
new Student{ Age = 5, GPA = 6, Name = "ghi"},
};
form.Text = "Typed Array";
grid.DataSource = arrStudents;
form.ShowDialog();
// anon-type
var anonTypeArr = arrStudents.Select(
x => new {x.Age, x.GPA, x.Name}).ToArray();
grid.DataSource = anonTypeArr;
form.Text = "Anonymous Type Array";
form.ShowDialog();
}
}
}
arrStudents, and what does Student look like ?This works for me:
public class Student
{
public int Age { get; set; }
public double GPA { get; set; }
public string Name { get; set; }
}
public Form1()
{
InitializeComponent();
Student[] arrStudents = new Student[1];
arrStudents[0] = new Student();
arrStudents[0].Age = 8;
arrStudents[0].GPA = 3.5;
arrStudents[0].Name = "Bob";
dataGridView1.DataSource = arrStudents;
}
Or less redundant:
arrStudents[0] = new Student {Age = 8, GPA = 3.5, Name = "Bob"};
I'd also use a List<Student> instead of an array since it will have to grow most likely.
Is That what you're doing too?
BindingList<T>so that changes to the underlying data would be visible in theDataGridView.