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Version Q2 2011 released 07/12/2011
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Editor / Validator Support

Registration Form
First Name: *
Last Name: *
Skill Level:
Address: *
Resume: *
   
 
 
 
 
   


   

  • Using RadEditor with ASP.NET Validators

    RadEditor will usually be used as a replacement for the regular TextBox control which offers support for validators such as <asp:RequiredFieldValidator> and <asp:CustomValidator>. The example demonstrates how to attach <asp:RequiredFieldValidator> and <asp:CustomValidator> controls to RadEditor:

    <telerik:radeditor runat="server" ID="RadEditor1"></telerik:radeditor>
    <    asp:RequiredFieldValidator ID="ResumeValidator" Runat="server"
        ControlToValidate    ="RadEditor1"
        Display    ="Static">Please fill in your RESUME!!!
    </asp:RequiredFieldValidator>
    <    asp:CustomValidator runat="server" ID="CustomValidator1" ControlToValidate="RadEditor1" ClientValidationFunction="checkLength">* The text length should not exceed 50 symbols.</asp:CustomValidator>  
    <script type="text/javascript">  
            var limitNum = 50;  
           
        function     checkLength(sender, args)  
        {  
                //Note that sender is NOT the RadEditor. sender is the <span> of the validator. 
            //The content is contained in the args.Value variable     
                var editorText = args.Value; 
                args.IsValid = editorText.length > limitNum;  
            }  
    </script>

     

Source Code

C# VB.NET
Show code in new window Demo isolation steps
  • <%@ Page Theme="Default" Language="C#" Debug="true" AutoEventWireup="true" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.Web.Examples.Editor.Validators.DefaultCS" %>
    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
    <%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
    <%@ Register TagPrefix="qsf" TagName="Header" Src="~/Common/Header.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="HeadTag" Src="~/Common/HeadTag.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="Footer" Src="~/Common/Footer.ascx" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

    <html xmlns="http://www.w3.org/1999/xhtml" >
    <head runat="server">
        <qsf:headtag id="Headtag1" runat="server"/>
    </head>
    <body class="BODY">
        <form id="form1" runat="server">
                             
            <qsf:header id="Header1" runat="server" navigationlanguage="c#"/>
         <telerik:RadScriptManager ID="ScriptManager1" runat="server" />    
                <table>
                        <tr>
                            <td colspan="3"><b>Registration Form</b></td>
                        </tr>
                        <tr>
                            <td style="white-space:nowrap;">First Name:</td>
                            <td><asp:TextBox id="FirstBox" runat="server"></asp:TextBox> *</td>
                            <td style="width:300px;">
    <asp:RequiredFieldValidator ID="FirstValidator" Runat="server"
    ControlToValidate="FirstBox"
    Display="Dynamic">Please fill in first name!</asp:RequiredFieldValidator>
                            </td>
                        </tr>
                        <tr>
                            <td style="white-space:nowrap;">Last Name:</td>
                            <td><asp:TextBox id="LastBox" runat="server"></asp:TextBox> *</td>
                            <td>
    <asp:RequiredFieldValidator ID="LastValidator" Runat="server"
    ControlToValidate="LastBox"
    Display="Dynamic">Please fill in last name!</asp:RequiredFieldValidator>
                            </td>
                        </tr>
                        <tr>
                            <td style="white-space:nowrap;">Skill Level:</td>
                            <td>
                                <asp:dropdownlist id="ExperienceList" runat="server">
                                    <asp:ListItem Value="No Experience" Selected="True">No Experience</asp:ListItem>
                                    <asp:ListItem Value="Beginner">Beginner</asp:ListItem>
                                    <asp:ListItem Value="Good">Good</asp:ListItem>
                                    <asp:ListItem Value="Excellent">Excellent</asp:ListItem>
                                </asp:dropdownlist>
                            </td>
                            <td></td>
                        </tr>
                        <tr>
                            <td style="white-space:nowrap;">Address:</td>
                            <td style="white-space:nowrap;"><asp:TextBox id="AddressBox" Width="254px" runat="server" TextMode="MultiLine" Columns="40" Rows="3"></asp:TextBox> *</td>
                            <td>
    <asp:RequiredFieldValidator ID="AddressValidator" Runat="server"
    ControlToValidate="AddressBox"
    Display="Dynamic">Please fill in your address!</asp:RequiredFieldValidator>
                            </td>
                        </tr>
                        <tr>
                            <td style="white-space:nowrap;">Resume: *</td>
                            <td colspan="2">
                            <telerik:radeditor runat="server" SkinID="BasicSetOfTools" ID="RadEditor1">
                            </telerik:radeditor>
                            <br/>
    <asp:RequiredFieldValidator ID="ResumeValidator" Runat="server"
    ControlToValidate="RadEditor1"
    Display="Static">Please fill in your RESUME!!!
                            </asp:RequiredFieldValidator><br />
    <asp:CustomValidator runat="server" ID="CustomValidator1"
    ControlToValidate="RadEditor1"
    Display="static"
    ClientValidationFunction="checkLength">* Your resume is too short. Its length should be at least 50 symbols.</asp:CustomValidator>
                            <script type="text/javascript">
                                var limitNum = 50;
                                   
                                function checkLength(sender, args)
                                {
                                    //Note that sender is NOT the RadEditor. sender is the span of the validator.
                                    //The content is contained in the args.Value variable
                                    var editorText = args.Value;
                                    args.IsValid = editorText.length > limitNum;
                                }
                            </script>
                            
                            </td>
                        </tr>
                        <tr>
                            <td colspan="3">
                                <table cellpadding="1" cellspacing="0" width="100%">
                                    <tr>
                                        <td align="center">
                                            <asp:button Runat="server" ID="Submit" Text="Submit" Width="80px" CssClass="button"></asp:button>&nbsp;&nbsp;&nbsp;
                                        </td>
                                    </tr>
                                </table>
                            </td>
                        </tr>
                    </table>
            <qsf:Footer runat="server" ID="Footer1" />
                
        </form>
    </body>
    </html>

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