范围验证器不在asp.net最小值和最大值中

Question

我申请RangeValidator了TextBox.但它总是显示错误:无效范围,虽然我给出了最小值10和最大值25.我希望用户不能输入长度小于10且大于25的值.我希望用户可以输入任何内容,所以我type="string"在RangeValidator.但它总是给我错误消息:无效范围.

<td>
    <asp:TextBox ID="tbPassword" runat="server" MaxLength="25" type="password">
    </asp:TextBox>
    <asp:RequiredFieldValidator ID="rfvPassword" runat="server" 
        ControlToValidate="tbPassword" ForeColor="red" Display="Dynamic" 
        ErrorMessage="Password is required." SetFocusOnError="true">
    </asp:RequiredFieldValidator>
    <asp:RangeValidator ID="rvPassword" ControlToValidate="tbPassword" 
        ForeColor="red" Display="Dynamic" MinimumValue="10" MaximumValue="25" 
        SetFocusOnError="true" Type="String" runat="server" 
        ErrorMessage="Invalid Range">
    </asp:RangeValidator>
</td>

Answer 1

为此,您需要使用CustomValidatorEmad Mokhtar建议的控件.

对于服务器端验证,请创建这样的事件.

protected void TextValidate(object source, ServerValidateEventArgs e)
{
    e.IsValid = (e.Value.Length >= 10 && e.value.Length <= 25);
}

对于客户端验证,请创建一个这样的javascript函数.

<script type="text/javascript">
    function validateLength(oSrc, args){
        args.IsValid = (args.Value.length >= 10 && args.Value.length <= 25);
    }
</script>

然后在你的aspx标记中有这样的CustomValidator控件.

<asp:Textbox id="tbPassword" runat="server" text=""></asp:Textbox>
<asp:CustomValidator id="customValidator" runat="server" 
    ControlToValidate = "tbPassword"
    OnServerValidate="TextValidate"
    ErrorMessage = "Password must be between 10 to 25 characters!"
    ClientValidationFunction="validateLength" >
</asp:CustomValidator>

你可以在这里找到更多细节.