Validate control manually in C#
<%@ Page language="c#" src="ManualValidation.aspx.cs" AutoEventWireup="false" Inherits="ManualValidation" %>
<HTML>
<body>
<form id="Form1" method="post" runat="server">
A number (1 to 10):
<asp:TextBox id="txtValidated" runat="server"></asp:TextBox>
<asp:RangeValidator id="RangeValidator" runat="server" ErrorMessage="This Number Is Not In The Range" ControlToValidate="txtValidated" MaximumValue="10" MinimumValue="1" Type="Integer" EnableClientScript="False"></asp:RangeValidator><BR>
<BR>
Not validated:
<asp:TextBox id="txtNotValidated" runat="server"></asp:TextBox><BR>
<BR>
<asp:Button id="cmdOK" runat="server" Text="OK"></asp:Button><BR>
<BR>
<asp:Label id="lblMessage" runat="server" EnableViewState="False"></asp:Label>
</form>
</body>
</HTML>
<%--
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
public class ManualValidation : System.Web.UI.Page
{
protected System.Web.UI.WebControls.TextBox txtValidated;
protected System.Web.UI.WebControls.RangeValidator RangeValidator;
protected System.Web.UI.WebControls.TextBox txtNotValidated;
protected System.Web.UI.WebControls.Button cmdOK;
protected System.Web.UI.WebControls.Label lblMessage;
private void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.cmdOK.Click += new System.EventHandler(this.cmdOK_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void cmdOK_Click(object sender, System.EventArgs e)
{
string errorMessage = "<b>Mistakes found:</b><br>";
TextBox ctrlInput;
bool pageIsValid = true;
foreach (BaseValidator ctrl in this.Validators)
{
if (!ctrl.IsValid)
{
pageIsValid = false;
errorMessage += ctrl.ErrorMessage + "<br>";
ctrlInput = (TextBox)this.FindControl(ctrl.ControlToValidate);
errorMessage += " * Problem is with this input: ";
errorMessage += ctrlInput.Text + "<br>";
}
}
if (!pageIsValid) lblMessage.Text = errorMessage;
}
}
--%>
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