public void FillProductsToDataGrid(int userCompanyId)
{
/*This line is block null exception when filling DataGrid.*/
mainForm = (MainForm)Application.OpenForms["MainForm"];
mainForm.mdgProducts.DataSource = new StockDto.StockHeader();
ICollection <StockDto.StockHeader> products = bStock.FillDataGrid(userCompanyId, out ErrorDto error);
if (error.ProcessResult)
{
mainForm.mdgProducts.DataSource = products;
mainForm.mlbl_NoProductRecord.Visible = mainForm.mdgProducts.RowCount == 0 ?true :false;
}
else
{
Error.Show(error);
}
}