如何将 DataGridView 绑定到特定属性？

Question

Say if this is my Data class

class Data
{
    public int A { set; get;}
    public long B { set; get;}
    public string C { set; get;}
}

Now I have a collection of Data as data source and I want the DataGridView to bind to it.

But I only want to display A and C in the view. What's the easiest way to do this?

Answer 1

Add the columns you want to the grid in the designer. Set the DataPropertyName of each column to the name of the data source property/column that you want to bind to. Before binding the data in code, set AutoGenerateColumns to false , so that the grid doesn't create any extra columns.

Answer 2

Your question is how to bind DataGridView to specific properties . You mention that you have a collection of Data but don't say whether it's observable (for example BindingList<Data> ). You end your post with what's the easiest way to do this? While that's a matter of opinion, one way that I personally find very easy is to allow AutoGenerateColumns and do column formatting on a bindable source in the OnLoad override of the form.

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Example

public partial class MainForm : Form
{
    public MainForm() => InitializeComponent();
    internal BindingList<Data> Rows { get; } = new BindingList<Data>();
    protected override void OnLoad(EventArgs e)
    {
        base.OnLoad(e);

        dataGridView.AllowUserToAddRows = false;
        dataGridView.DataSource = Rows;
        dataGridView.CellEndEdit += (sender, e) => dataGridView.Refresh();

        #region F O R M A T    C O L U M N S
        Rows.Add(new Data()); // <= Auto-generate columns
        dataGridView.Columns["A"].Width = 50;
        dataGridView.Columns["A"].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
        dataGridView.Columns["A"].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
        dataGridView.Columns["C"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
        dataGridView.Columns["C"].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
        Rows.Clear();
        #endregion F O R M A T    C O L U M N S

        // Add a few items
        Rows.Add(new Data { A = 1, B = 1000L });
        Rows.Add(new Data { A = 2, B = 2000L });
        Rows.Add(new Data { A = 3, B = 3000L });
    }
}

The Data class defines whether the column is shown and editable using visibility and attributes.

class Data
{
    // A visible, editable cell.
    public int A { get; set; }

    // Non-visible because property is declared as internal.
    internal long B { get; set; }

    // Visible, read-only cell that dynamically responds
    // when cell 'A" is edited due to Refresh() 
    public string C => $"A={A} B={B}";

    // Non-visible because of attribute.
    [Browsable(false)]
    public string? D { get; set; } = "Not visible";        
}

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Another alternative, provided the column exists in the first place, is that it can be shown-hidden. For example: dataGridView.Columns["C"].Visible = false .