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

You should be able to change the header cells after you've set the datasource:

    if (dataGridView1.Columns["Value"] != null)
        dataGridView1.Columns["Value"].HeaderText = "Key";
    if (dataGridView1.Columns["Expiration"] != null)
        dataGridView1.Columns["Expiration"].HeaderText = "Expire";

Answer 2

Use the DisplayName attribute on your properties to specify column names in your DataGridView:

class Key
{
    [System.ComponentModel.DisplayName("Key")]
    public string Value { get; }
    [System.ComponentModel.DisplayName("Expire")]
    public DateTime ExpirationDate { get; }
} 

Answer 3

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;
}