1 /// <summary> 2 /// 点击开启学生窗体 3 /// </summary> 4 /// <param name="sender"></param> 5 /// <param name="e"></param> 6 private void pictureBox6_Click(object sender, EventArgs e) 7 { 8 bool Has = false; 9 Form3 F3 = new Form3(); 10 F3.Tag = "F3"; 11 foreach (Form F in panel1.Controls) 12 { 13 if (F.Tag == F3.Tag) 14 { 15 F.Show(); 16 F3.Close(); 17 Has = true; 18 } 19 else 20 { 21 F.Hide(); 22 } 23 } 24 if (Has == false) 25 { 26 F3.WindowState = FormWindowState.Maximized; 27 F3.MdiParent = this; 28 F3.Parent = panel1; 29 F3.Show(); 30 } 31 } 32 /// <summary> 33 /// 点击开启教师窗体 34 /// </summary> 35 /// <param name="sender"></param> 36 /// <param name="e"></param> 37 private void pictureBox5_Click(object sender, EventArgs e) 38 { 39 bool Has = false; 40 Form4 F4 = new Form4(); 41 F4.Tag = "F4"; 42 foreach (Form F in panel1.Controls) 43 { 44 if (F.Tag == F4.Tag) 45 { 46 F.Show(); 47 F4.Close(); 48 Has = true; 49 } 50 else 51 { 52 F.Hide(); 53 } 54 } 55 if (Has == false) 56 { 57 F4.WindowState = FormWindowState.Maximized; 58 F4.MdiParent = this; 59 F4.Parent = panel1; 60 F4.Show(); 61 } 62 }
遍历panel中所有控件并操作：
1 foreach (Control TB in panel1.Controls)//遍历所有控件 2 { 3 if (TB is TextBox)//根据控件类型操作 4 { 5 TB.Text = ""; 6 } 7 else if (TB is MaskedTextBox) 8 { 9 TB.Text = " - -"; 10 } 11 }
