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MaxLength not working when RadTextBox created in code-behind

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9 Answers, 1 is accepted

answered on 25 Mar 2009, 07:54 AM

Hello Adam,

I tried the scenario and found that its working fine in my end. Checkout the code which I tried.

ASPX:

    
            <asp:Panel ID="Panel1" runat="server">  
        
            </asp:Panel>

CS:

    
            protected void Page_Load(object sender, EventArgs e)  
        
            {  
        
                RadTextBox TextBox1 = new RadTextBox();  
        
                TextBox1.ID = "Id1";      
        
                TextBox1.MaxLength = 5;  
        
                Panel1.Controls.Add(TextBox1);  
        
            }

Could you paste the code that you tried if it is different from mine?

Thanks,
Princy.

answered on 26 Mar 2009, 06:56 AM

Hello Adam,

I am not clear with what you require exactly. If you set the maxlength property of the RadTexbox to true, the text would be limited to 5 characters, no matter whether you set the TextMode to multiline or singleline.
c#:

    
            protected void Page_Load(object sender, EventArgs e) 
        
                { 
        
                    RadTextBox TextBox1 = new RadTextBox(); 
        
                    TextBox1.ID = "Id1"; 
        
                    TextBox1.MaxLength = 5; 
        
                    TextBox1.TextMode = InputMode.MultiLine; 
        
                    Panel1.Controls.Add(TextBox1); 
        
                }

Whereas, when the TextMode is set to MultiLine, if you want to limit the text characters entered per line in the textbox, then you would have to set the Columns property as shown below:
c#:

    
            protected void Page_Load(object sender, EventArgs e) 
        
                { 
        
                    RadTextBox TextBox1 = new RadTextBox(); 
        
                    TextBox1.ID = "Id1";         
        
                    TextBox1.TextMode = InputMode.MultiLine; 
        
                    TextBox1.Columns = 5;       
        
                    Panel1.Controls.Add(TextBox1);   
        
                }

Thanks
Princy.

answered on 26 Mar 2009, 02:12 PM

What I would like is a multi-line text area created in the code-behind that does not allow the user to type more than a certain number of characters (we can ignore the Columns property for now). In the top example of the last code snippet you sent me, it still allows me to type more than 5 characters. If you created that same Text Box on the front page, it would correctly stop the user from typing any more than 5 characters. What I have found is that a javascript event property gets attached to the control (for the MaxLength property) when it's created from the front page, but not from the code-behind.

Try running your top code snippet. Is it preventing you from entering more than 5 characters?

answered on 23 Apr 2009, 11:24 PM

Hi Adam,

I gave this a try - and it works like a charm.
Of course "new lines" are one character so I (for an example) limited to
as
df
as my input.
To make clear what I made - here may complete aspx:

    
            <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm4.aspx.cs" Inherits="TestPMethods.WebForm4" %> 
        
            <%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %> 
        
            <!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></title>  
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server">  
        
                <telerik:RadScriptManager runat="server">  
        
                </telerik:RadScriptManager> 
        
                <div> 
        
                <asp:Panel ID="Panel1" runat="server">     
        
                </asp:Panel>    
        
                </div> 
        
                </form> 
        
            </body> 
        
            </html>

an my complete code behind:

    
            using System;  
        
            using System.Collections.Generic;  
        
            using System.Linq;  
        
            using System.Web;  
        
            using System.Web.UI;  
        
            using System.Web.UI.WebControls;  
        
            using Telerik.Web.UI;  
        
            namespace TestPMethods {  
        
                public partial class WebForm4 : System.Web.UI.Page {  
        
                    protected void Page_Load(object sender, EventArgs e) {  
        
                        RadTextBox TextBox1 = new RadTextBox();  
        
                        TextBox1.ID = "Id1";  
        
                        TextBox1.MaxLength = 5;  
        
                        TextBox1.TextMode = InputMode.MultiLine;  
        
                        Panel1.Controls.Add(TextBox1);    
        
                    }  
        
                }  
        
            }

That's all - no "hidden things" or something else.
Could you please tell us which version of Rad controls you use?

The mine is 2009.1.402.35

Regards

Manfred

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MaxLength not working when RadTextBox created in code-behind

9 Answers, 1 is accepted