//学生成绩数据右键菜单相关操作
        private void ToolStripMenuItem19_Click(object sender, EventArgs e)
        {
            FormDelete FormDelete = new FormDelete();

            FormDelete.Delflag = 5;     //将删除身份设置为成绩
            FormDelete.id      = skinDataGridViewSCMapping.SelectedRows[0].Cells[0].Value.ToString();
            FormDelete.Show();
        }
        private void  除此数据ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            FormDelete FormDelete = new FormDelete();

            FormDelete.Delflag = 1;     //将删除身份设置为学生
            FormDelete.id      = skinDataGridViewStudent.SelectedRows[0].Cells[0].Value.ToString();
            FormDelete.Show();
        }
        //班级数据右键菜单相关操作
        private void ToolStripMenuItem16_Click(object sender, EventArgs e)
        {
            FormDelete FormDelete = new FormDelete();

            FormDelete.Delflag = 4;     //将删除身份设置为班级
            FormDelete.id      = skinDataGridViewClassInfo.SelectedRows[0].Cells[0].Value.ToString();
            FormDelete.Show();
        }
        private void  除成绩数据ToolStripMenuItem5_Click(object sender, EventArgs e)
        {
            //打开删除数据窗体
            FormDelete FormFullDelete = new FormDelete();

            FormFullDelete.Delflag = 5;
            FormFullDelete.Show();
        }