private void button4_Click(object sender, EventArgs e) { try { if (text搜索内容.Text != "") { dataGridView产品进出库.DataSource = pdm.GetAllProductFlowByName(label搜索栏目.Text, text搜索内容.Text); //this.material.GetAllMaterialByName(label搜索栏目.Text, text搜索内容.Text); dataGridView产品进出库.Update(); } else { dataGridView产品进出库.DataSource = pdm.GetAllProductFlow(); dataGridView产品进出库.Update(); } } catch (Exception ex) { MessageBox.Show(ex.ToString() + "加载失败!"); } }