Validate control manually in C# : By Your Function « Validation by Control « ASP.Net

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ASP.Net » Validation by Control » By Your Function 
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 (to 10):
      <asp:TextBox id="txtValidated" runat="server"></asp:TextBox>&nbsp;
      <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>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Not validated:&nbsp;
      <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 (!pageIsValidlblMessage.Text = errorMessage;

      

    }
  }


--%>
           
       
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