private void ButtonClickedForProjects(object sender, EventArgs e) { dataGridViewProjects.Visible = true; if (dataGridViewClients.SelectedRows.Count > 0) { selectedIdFromProjects = Convert.ToInt32(dataGridViewClients.SelectedRows[0].Cells[0].Value.ToString()); dataProject = projectPresenter.GetAllProjects(selectedIdFromProjects); dataGridViewProjects.DataSource = dataProject; dataGridViewProjects.DataMember = dataProject.TableName; } }