How do I filtered TextBox with a Decimal (double) Data Type
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一直以来，在开发过程中，都是验证用户输入的是否为整数。这次系统却需要验证用户输入Decimal或是Double数据类型的值。以前做验证，用的是RegularExpressionValidator来验证。
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="txtQuantity"
Display="None" ErrorMessage="栏位，非有效数值！" ValidationExpression="^/d*/.?/d*$"></asp:RegularExpressionValidator>
这次由于验证的栏位较多，想在输入时即刻filter。现使用下面的方法：
<asp:TextBox ID="txtQuantity" runat="server" onkeyup="value=value.replace(/[^-?/d/.]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^-?/d/.]/g,''))" ></asp:TextBox>
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