async private void Delete_Material_Click(object sender, EventArgs e) { //cut 执行delete 服务数据 if (MessageBox.Show("是否删除该行数据", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK) { int del = await serviceClient.DeleteMaterialAsync(curMaterialCode); } //刷新一下 SelectMaterial(); }