c# 콤보박스를 마우스 클릭하면 바로 mysql 에 있는 값 불러오기

콤보박스를 마우스 클릭하면 바로 mysql 에 있는 값 불러오기        

private void comboBox_weld_mat4_MouseClick(object sender, MouseEventArgs e)

        {

            this.comboBox_weld_mat4.Items.Clear();

            cb_query.comboBox_Query("select * from tcm_data.mat4_name order by name asc ;", "name", this.comboBox_weld_mat4, 1);

        }

        private void comboBox_weld_mat3_MouseClick(object sender, MouseEventArgs e)

        {

            this.comboBox_weld_mat3.Items.Clear();

            cb_query.comboBox_Query("select * from tcm_data.mat3_name order by name asc ;", "name", this.comboBox_weld_mat3, 1);

        }

        private void comboBox_weld_mat2_MouseClick(object sender, MouseEventArgs e)

        {

            this.comboBox_weld_mat2.Items.Clear();

            cb_query.comboBox_Query("select * from tcm_data.mat2_name order by name asc ;", "name", this.comboBox_weld_mat2, 1);

        }

        private void combobox_weld_mat1_MouseClick(object sender, MouseEventArgs e)

        {

            this.combobox_weld_mat1.Items.Clear();

            cb_query.comboBox_Query("select * from tcm_data.mat1_name order by name  ;", "name", this.combobox_weld_mat1, 1);

        }