private void btnAddSql_Click(object sender, EventArgs e)
{
AddStudentFrm addStuFrm = new AddStudentFrm();
addStuFrm.ShowDialog();
LoadDataGridView();
}
private void 修改ToolStripMenuItem_Click(object sender, EventArgs e)
{
string stuId = this.dgvStudent.SelectedCells[0].OwningRow.Cells["StuId"].Value.ToString();
AddStudentFrm addStuFrm = new AddStudentFrm();
addStuFrm.StuId = stuId;
addStuFrm.ShowDialog();
LoadDataGridView();
}