1 #region 设置数量等textbox控件样式及限制条件（具体调用的方法就是重写或直接调用ShieldNumberTextBoxOtherKeys函数）
2
3 /// <summary>
4 /// 屏蔽数字textbox的其他字符串
5 /// </summary>
6 /// <param name="sender"></param>
7 /// <param name="e"></param>
8 public virtual void tBoxNumbers_KeyDown(object sender, KeyEventArgs e)
9 {
10 e.SuppressKeyPress = true;
11
12 switch (e.KeyCode)
13 {
14 case Keys.D0:
15 case Keys.D1:
16 case Keys.D2:
17 case Keys.D3:
18 case Keys.D4:
19 case Keys.D5:
20 case Keys.D6:
21 case Keys.D7:
22 case Keys.D8:
23 case Keys.D9:
24 case Keys.NumPad0:
25 case Keys.NumPad1:
26 case Keys.NumPad2:
27 case Keys.NumPad3:
28 case Keys.NumPad4:
29 case Keys.NumPad5:
30 case Keys.NumPad6:
31 case Keys.NumPad7:
32 case Keys.NumPad8:
33 case Keys.NumPad9:
34 case Keys.Back:
35 case Keys.OemPeriod:
36 case Keys.Delete:
37 case Keys.Decimal:
38 e.SuppressKeyPress = false;
39 break;
40 default:
41 break;
42 }
43 }
44
45 public virtual void tBoxNumbers_KeyPress(object sender, KeyPressEventArgs e)
46 {
47 TextBox tBox = sender as TextBox;
48 char c = e.KeyChar;
49
50 if (c.ToString().Equals("."))
51 {
52 if (tBox.Text.Length <= 0)
53 e.Handled = true; //小数点不能在第一位
54 else
55 {
56 float f;
57 float oldf;
58 bool b1 = false, b2 = false;
59 b1 = float.TryParse(tBox.Text, out oldf);
60 b2 = float.TryParse(tBox.Text + e.KeyChar.ToString(), out f);
61 if (b2 == false)
62 {
63 if (b1 == true)
64 e.Handled = true;
65 else
66 e.Handled = false;
67 }
68 }
69 }
70 }
71
72 /// <summary>
73 /// 屏蔽数字textbox的其他字符串
74 /// </summary>
75 /// <param name="tbox">要屏蔽的textbox</param>
76 public virtual void ShieldNumberTextBoxOtherKeys(TextBox tbox)
77 {
78 tbox.ImeMode = ImeMode.Disable;
79 tbox.KeyDown += tBoxNumbers_KeyDown;
80 tbox.KeyPress += tBoxNumbers_KeyPress;
81 }
82
83 #endregion
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