Custom column names for DataGridView with associated DataSource

Question

How can I setup custom column names for DataGridView with associated DataSource?

Here is some code:

class Key
{
    public string Value { get; }
             


        

Answer 1

public DataTable SetColumnsHeaderName(string[] TagName)
{
    DataTable dt = new DataTable();
    foreach (var item in TagName)
    {
        dt.Columns.Add(item);
    }
    return dt;
}

public void ShowDataGridView()
{
    string[] tag = new string[] { "First Name", "Last Name", "Phone Number", };
    //fill datatable columns Name
    var dt = SetColumnsHeaderName(tag);
    //connect db and fetch table name
    var listx = db.tablename.ToList();
    foreach (var item in listx)
    {
        dt.Rows.Add(new object[] { item.Name, item.Family, item.Phone });
    }
    datagridView.DataSource = dt;
}