altas(ajax)控件(十二)：FilteredTextBox

FilteredTextBox控件是一个非常有用的控件，使用他能直接过滤一些字符。

例子：

一：只允许数字

< asp:TextBox  ID ="TextBox1"  runat ="server"   />
< ajaxToolkit:FilteredTextBoxExtender
            ID ="FilteredTextBoxExtender1"
           runat ="server"
           TargetControlID ="TextBox1"
           FilterType ="Numbers"   />

 

二：只允许输入小字字母

< asp:TextBox  ID ="TextBox2"  runat ="server"   />
< ajaxToolkit:FilteredTextBoxExtender
             ID ="FilteredTextBoxExtender2"
            runat ="server"  
            TargetControlID ="TextBox2"
            FilterType ="LowercaseLetters"   />

三：只允许输入(+,-,*,/,=,.)和数字

< asp:TextBox  ID ="TextBox3"  runat ="server"   /></ td >
< ajaxToolkit:FilteredTextBoxExtender
             ID ="FilteredTextBoxExtender3"
            runat ="server"  
            TargetControlID ="TextBox3"
            FilterType ="Custom, Numbers"
            ValidChars ="+-=/*()."   />

四：不允许输入数字

< asp:TextBox  ID ="TextBox4"  runat ="server"   />
< ajaxToolkit:FilteredTextBoxExtender
             ID ="FilteredTextBoxExtender4"
            runat ="server"  
            TargetControlID ="TextBox4"
            FilterType ="Custom"
            FilterMode ="InvalidChars"
            InvalidChars ="1234567890"   />

 

属性	说明
TargetControlID	需要过滤的控件的ID
FilterType	过滤的格式：有Numbers, LowercaseLetters, UppercaseLetters, and Custom四种格式
FilterMode	过滤模式：有ValidChars (默认) or InvalidChars两种。
ValidChars	合法的字符。当设置该值时，需要FilterType包含有Custom
InvalidChars	不合法的字符：当设置该值时，需要FilterType必须是Custom