Range validator - DotNet and DataBase

Saturday, 18 August 2018

Range validator



Range validator is to identify whether the user-supplied data within the specified range or not. For example, User registration form is having a User age control, it should accept users who are in the age between 18 to 35. Using Range validator we can restrict the users who are between 18-35.


><asp:RangeValidator ID="RangeValidator1" runat="server" ErrorMessage="Error message" ControlToValidate="control to validate" MinimumValue="minimum value" MaximumValue="maximum value"></asp:RangeValidator>


Example:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="RequiredFieldvalidator.aspx.cs" Inherits="WebProgramming.Validators.RequiredFieldvalidator" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <table>
                <tr>
                    <td>
                      UserName:  <asp:TextBox ID="txtUserName" runat="server"></asp:TextBox><asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="UserName is required." ControlToValidate="txtUserName"></asp:RequiredFieldValidator></td>
                </tr>
                 <tr>
                    <td>
                      Age:  <asp:TextBox ID="txtAge" runat="server"></asp:TextBox><asp:RangeValidator ID="rfvAge" runat="server" ErrorMessage="User age should be with in 18-35." ControlToValidate="txtAge" MinimumValue="18" MaximumValue="35"></asp:RangeValidator></td>
                </tr>
                <tr>
                    <td>
                        <asp:Button ID="btnSubmit" runat="server" Text="Submit"  /></td>
                </tr>
            </table>
        </div>
    </form>
</body>

</html>


Here MinimumValue and MaximumValue are the validation conditions which restrict the age within 18-35. 


Output



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