您的位置：首页 > 其它

WPF TextBox 验证输入

2011-11-04 14:12 288 查看 
//验证输入为数字
02
private
void
txt_time_KeyDown(
object
sender, KeyEventArgs e)
03
{
04
if
 
(!((e.Key >= Key.D0 && e.Key <= Key.D9) || (e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9)))
05
{
06
e.Handled =
true
;
07
}
08
}
09
10
//屏蔽粘贴非法字符
11
private
 
void
 
txt_time_TextChanged(
object
 
sender, TextChangedEventArgs e)
12
{
13
var textBox = sender
as
 
TextBox;
14
TextChange[] change =
new
 
TextChange[e.Changes.Count];
15
e.Changes.CopyTo(change, 0);
16
17
int
 
offset = change[0].Offset;
18
if
 
(change[0].AddedLength >0) 
19
{
20
double
 
num = 0;
21
if
 
(!Double.TryParse(textBox.Text,
out
 
num))
22
{
23
textBox.Text = textBox.Text.Remove(offset, change[0].AddedLength);
24
textBox.Select(offset, 0);
25
}
26
}
27
}
view sourceprint?

01
//屏蔽非法按键
02
private
 
void
 
txtAge_KeyDown(
object
 
sender, KeyEventArgs e)
03
{
04
TextBox txt = sender
as
 
TextBox;
05
06
if
 
((e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9) || e.Key == Key.Decimal)
07
{
08
if
 
(txt.Text.Contains(
"."
) && e.Key == Key.Decimal)
09
{
10
e.Handled =
true
;
11
return
;
12
}
13
e.Handled =
false
;
14
}
15
else
 
if
 
(((e.Key >= Key.D0 && e.Key <= Key.D9) || e.Key == Key.OemPeriod) && e.KeyboardDevice.Modifiers != ModifierKeys.Shift)
16
{
17
if
 
(txt.Text.Contains(
"."
) && e.Key == Key.OemPeriod)
18
{
19
e.Handled =
true
;
20
return
;
21
}
22
e.Handled =
false
;
23
}
24
else
25
{
26
e.Handled =
true
;
27
}
28
}
29
30
//屏蔽中文输入和非法字符粘贴输入
31
private
 
void
 
txtAge_TextChanged(
object
 
sender, TextChangedEventArgs e)
32
{
33
TextBox textBox = sender
as
 
TextBox;
34
TextChange[] change =
new
 
TextChange[e.Changes.Count];
35
e.Changes.CopyTo(change, 0);
36
37
int
 
offset = change[0].Offset;
38
if
 
(change[0].AddedLength >0) 
39
{
40
double
 
num = 0;
41
if
 
(!Double.TryParse(textBox.Text,
out
 
num))
42
{
43
textBox.Text = textBox.Text.Remove(offset, change[0].AddedLength);
44
textBox.Select(offset, 0);
45
}
46
}
47
}

                                            

                                        

                        
                        内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 点击这里给我发消息 
                    

                    

                    

                        

                         标签： 
                                                

                        

                    


                

            


            

                
相关文章推荐

                

                
            

        

        

            

            
            

                

                    
新的分享

                    

                        
                    

                

            


            

                

                    
章节导航