CODEWITHSUNDEEP
c#datagridviewdatasource
Rasmus Nielsen
Rasmus Nielsen

Reputation: 21

DataSource doesn't show data when updated

I have a dataGridView, which should use a list as a dataSource. When running the application, it shows the grid fine with columns (auto-generated). When a new Person-object is created and added to the list called Persons, it just add an empty row. When adding new persons after this, no changes is made.

The system is using a property in MainForm called Project, where it stores it's list used for the grid.

public partial class MainForm : Form
{
    public static DataProject Project { get; set; }

    public MainForm()
    {
        InitializeComponent();
        //show a dialog, creating the Project-object
        BindingSource bs = new BindingSource();
        bs.DataSource = Project.Persons;
        dataGridView1.DataSource = bs;
    }

    private void buttonAddPerson_Click(object sender, EventArgs e)
    {
        //show a dialog, creating a person and adding him to Project.Person (list).
        dataGridView1.Refresh();
        dataGridView1.Update();
    }
}

Here is the DataProject-object:

public class DataProject
{
    public string Name { get; set; }
    public List<Person> Persons { get; set; }

    public DataProject()
    {
        Persons = new List<Person>();
    }
}

Upvotes: 2

Views: 126

Answers (2)

Abhineet Kumar
Abhineet Kumar

Reputation: 19

Create a global variable for BindingSource

BindingSource bs = new BindingSource();

and on button click just reset this bindingdource

bs.ResetBindings(false);

Upvotes: 1

RookieRoll
RookieRoll

Reputation: 175

dataGridView1.DataBind(); add this at the end. I had the same issue once, it worked for me!

public MainForm()
    {
        InitializeComponent();
        //show a dialog, creating the Project-object
        BindingSource bs = new BindingSource();
        bs.DataSource = Project.Persons;
        dataGridView1.DataSource = bs;
        dataGridView1.DataBind();  
    }

Upvotes: 0

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