[c#] How to add new DataRow into DataTable?

I have a DataGridView binded to a DataTable (DataTable binded to database). I need to add a DataRow to the DataTable. I'm trying to use the following code:

dataGridViewPersons.BindingContext[table].EndCurrentEdit();
DataRow row = table.NewRow();

for (int i = 0; i < 28; i++)
{
    row[i] = i.ToString();
}

But it doesn't work, DataGridView has never been added a new row. Please, tell me, how can I fix my code?

Thank you in advance.

    GRV.DataSource = Class1.DataTable;
            GRV.DataBind();

Class1.GRV.Rows[e.RowIndex].Delete();
        GRV.DataSource = Class1.DataTable;
        GRV.DataBind();

I found dotnetperls examples on DataRow very helpful. Code snippet for new DataTable from there:

static DataTable GetTable()
{
    // Here we create a DataTable with four columns.
    DataTable table = new DataTable();
    table.Columns.Add("Weight", typeof(int));
    table.Columns.Add("Name", typeof(string));
    table.Columns.Add("Breed", typeof(string));
    table.Columns.Add("Date", typeof(DateTime));

    // Here we add five DataRows.
    table.Rows.Add(57, "Koko", "Shar Pei", DateTime.Now);
    table.Rows.Add(130, "Fido", "Bullmastiff", DateTime.Now);
    table.Rows.Add(92, "Alex", "Anatolian Shepherd Dog", DateTime.Now);
    table.Rows.Add(25, "Charles", "Cavalier King Charles Spaniel", DateTime.Now);
    table.Rows.Add(7, "Candy", "Yorkshire Terrier", DateTime.Now);

    return table;
}

If need to copy from another table then need to copy structure first:

DataTable copyDt = existentDt.Clone();
copyDt.ImportRow(existentDt.Rows[0]);

//?Creating a new row with the structure of the table:

DataTable table = new DataTable();
DataRow row = table.NewRow();
table.Rows.Add(row);

//Giving values to the columns of the row(this row is supposed to have 28 columns):

for (int i = 0; i < 28; i++)
{
    row[i] = i.ToString();
}

You have to add the row explicitly to the table

table.Rows.Add(row);

try table.Rows.add(row); after your for statement.

This works for me:

var table = new DataTable();
table.Rows.Add();