private void CloseForm()
{
if (m_QueryCompanyForm != null)
{
m_QueryCompanyForm.Close();
m_QueryCompanyForm = null;
}
if (m_QueryEmployeeForm != null)
{
m_QueryEmployeeForm.Close();
m_QueryEmployeeForm = null;
}
if (m_AddCompanyForm != null)
{
m_AddCompanyForm.Close();
m_AddCompanyForm = null;
}
if (m_AddEmployeeForm != null)
{
m_AddEmployeeForm.Close();
m_AddEmployeeForm = null;
}
if (m_AddCompanyListForm != null)
{
m_AddCompanyListForm.Close();
m_AddCompanyListForm = null;
}
}
private void btnAddEmployee_Click(object sender, EventArgs e)
{
CloseForm();
this.IsMdiContainer = true;
m_AddEmployeeForm = new AddEmployeeForm(); //实例化子窗体
m_AddEmployeeForm.MdiParent = this; //设置窗体的父子关系
m_AddEmployeeForm.Parent = plContainer; //设置子窗体的容器为父窗体中的Panel
m_AddEmployeeForm.Dock = DockStyle.Fill;
m_AddEmployeeForm.Show(); //显示子窗体，此句很重要，否则子窗体不会显示
}