private void 课程信息ToolStripMenuItem_Click(object sender, EventArgs e)
{
frmCourse f = frmCourse.Instacne();
f.MdiParent = this;
f.Show();
f.Focus();
}
public static frmCourse Instacne()
{
if (_Instance == null)
{
_Instance = new frmCourse();
}
return(_Instance);
}
private void metroTile4_Click(object sender, EventArgs e)
{
frmCourse f = frmCourse.Instacne();
//f.MdiParent = this;
f.Show();
f.Focus();
}
private void toolStripButton_Click(object sender, EventArgs e)
{
try
{
ChangeEnabledState();
this.Validate();
this.courseBindingSource.EndEdit();
this.tableAdapterManager.UpdateAll(this.student_Manage_DB);
}
catch (Exception ex)
{
DialogResult result = MessageBox.Show("该课程号已经存在，请重新确认", "操作提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
frmCourse f = new frmCourse();
this.Close();
f = new frmCourse();
f.Show();
f.Focus();
return;
}
}