How to change the header text in WinForms GridControl?

gridControl1.BaseStylesMap["Column Header"].StyleInfo.Text="Trial";

gridControl1.BaseStylesMap("Column Header").StyleInfo.Text="Trial"

this.gridControl1.QueryCellInfo += gridControl1_QueryCellInfo;
}
private void gridControl1_QueryCellInfo(object sender, GridQueryCellInfoEventArgs e)
{
    if (e.RowIndex == 0 && e.ColIndex > 0)
    {
        e.Style.Text = "Trial" + e.ColIndex;
    }
}

Private Me.gridControl1.QueryCellInfo += AddressOf gridControl1_QueryCellInfo
}
Private Sub gridControl1_QueryCellInfo(ByVal sender As Object, ByVal e As GridQueryCellInfoEventArgs)
 If e.RowIndex = 0 AndAlso e.ColIndex > 0 Then
  e.Style.Text = "Trial" & e.ColIndex
 End If
End Sub

for (int k = 1; k <= gridControl1.ColCount; k++)
{
    this.gridControl1[0, k].CellValue = "Trial" + k;
}

For k As Integer = 1 To gridControl1.ColCount
 Me.gridControl1(0, k).CellValue = "Trial" & k
Next k