//RangeValidator.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="RangeValidator.aspx.cs" Inherits="RangeValidator" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>asp.net RangeValidator: how to use</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:Navy">RangeValidator</h2>
<asp:Label ID="Label1" runat="server">
</asp:Label>
<br /><br />
<b>Select a number between 4 to 7</b>
<br />
<asp:DropDownList
ID="DropDownList1"
runat="server"
>
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem>5</asp:ListItem>
<asp:ListItem>6</asp:ListItem>
<asp:ListItem>7</asp:ListItem>
<asp:ListItem>8</asp:ListItem>
<asp:ListItem>9</asp:ListItem>
<asp:ListItem>10</asp:ListItem>
</asp:DropDownList>
<asp:RangeValidator
ID="RangeValidator1"
runat="server"
>
</asp:RangeValidator>
<br /><br />
<asp:Button ID="Button1" runat="server" Text="Submit Number" OnClick="Button1_Click" />
</div>
</form>
</body>
</html>
//RangeValidator.aspx.cs
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class RangeValidator : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if(!this.IsPostBack)
{
Label1.ForeColor = System.Drawing.Color.HotPink;
Label1.Font.Italic = true;
DropDownList1.BackColor = System.Drawing.Color.SaddleBrown;
DropDownList1.ForeColor = System.Drawing.Color.AliceBlue;
RangeValidator1.ControlToValidate = "DropDownList1";
RangeValidator1.Type = ValidationDataType.Integer;
RangeValidator1.MinimumValue = "4";
RangeValidator1.MaximumValue = "7";
RangeValidator1.ErrorMessage = "Select between 4 to 7";
}
}
protected void Button1_Click(object sender, EventArgs e) {
Label1.Text = "Number is valid: " +
DropDownList1.SelectedItem.Text.ToString();
}
}
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