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Changing RadTextBox ForeColor In CodeBehind Works Only For One Time And Fore More Problems Appear

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Ajax

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Majid Darab asked on 29 Jun 2010, 09:33 PM

hi dear telerik team :
my aspx code is like this :

    
            <html xmlns="http://www.w3.org/1999/xhtml" > 
        
            <head runat="server"> 
        
                <title></title> 
        
                <link href="App_Themes/Input/Office2007ByMe/Input.Office2007ByMe.css" rel="stylesheet" 
        
                    type="text/css" /> 
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server"> 
        
                <telerik:RadScriptManager ID="RadScriptManager1" runat="server"> 
        
                </telerik:RadScriptManager> 
        
                <div> 
        
                    <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server"> 
        
                        <AjaxSettings> 
        
                            <telerik:AjaxSetting AjaxControlID="Button1"> 
        
                                <UpdatedControls> 
        
                                    <telerik:AjaxUpdatedControl ControlID="RadTextBox1" /> 
        
                                    <telerik:AjaxUpdatedControl ControlID="Button1" /> 
        
                                </UpdatedControls> 
        
                            </telerik:AjaxSetting> 
        
                            <telerik:AjaxSetting AjaxControlID="Button2"> 
        
                                <UpdatedControls> 
        
                                    <telerik:AjaxUpdatedControl ControlID="RadTextBox1" /> 
        
                                    <telerik:AjaxUpdatedControl ControlID="Button2" /> 
        
                                </UpdatedControls> 
        
                            </telerik:AjaxSetting> 
        
                            <telerik:AjaxSetting AjaxControlID="Button3"> 
        
                                <UpdatedControls> 
        
                                    <telerik:AjaxUpdatedControl ControlID="RadTextBox1" /> 
        
                                    <telerik:AjaxUpdatedControl ControlID="Button3" /> 
        
                                </UpdatedControls> 
        
                            </telerik:AjaxSetting> 
        
                        </AjaxSettings> 
        
                    </telerik:RadAjaxManager> 
        
                    <telerik:RadTextBox ID="RadTextBox1" runat="server" EnableEmbeddedSkins="False"  
        
                        Width="125px" Skin="Office2007ByMe"> 
        
                    </telerik:RadTextBox> 
        
                    <br /> 
        
                    <br /> 
        
                    <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" /> 
        
                    <asp:Button ID="Button2" runat="server"  Text="Button"  
        
                        onclick="Button2_Click" /> 
        
                    <asp:Button ID="Button3" runat="server"  Text="Button"  
        
                        onclick="Button3_Click" /> 
        
                </div> 
        
                </form> 
        
            </body> 
        
            </html>

and codebehind :

    
            using System; 
        
            using System.Collections.Generic; 
        
            using System.Linq; 
        
            using System.Web; 
        
            using System.Web.UI; 
        
            using System.Web.UI.WebControls; 
        
            namespace ChatRoomByMajid 
        
            { 
        
                public partial class WebForm2 : System.Web.UI.Page 
        
                { 
        
                    protected void Page_Load(object sender, EventArgs e) 
        
                    { 
        
                    } 
        
                    protected void Button1_Click(object sender, EventArgs e) 
        
                    { 
        
                        RadTextBox1.ForeColor = System.Drawing.Color.Red; 
        
                    } 
        
                    protected void Button2_Click(object sender, EventArgs e) 
        
                    { 
        
                        RadTextBox1.ForeColor = System.Drawing.Color.Yellow; 
        
                    } 
        
                    protected void Button3_Click(object sender, EventArgs e) 
        
                    { 
        
                        RadTextBox1.ForeColor = System.Drawing.Color.Blue; 
        
                    } 
        
                } 
        
            }

when i click those buttons so the forecolor changes , but when the radtextbox gets focus for entering data so the previous color is shown!

how can i fix this problem ?
(i made the simple upper code for understanding)

best regards

9 Answers, 1 is accepted

answered on 07 Jul 2010, 07:27 AM

Hi Lenny,

Here is a simple test page, which works as expected on my side. Please compare with your implementation.

<%@ Page Language="C#" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<script runat="server">

protected void RadTextBox1_TextChanged(object sender, EventArgs e)

{

(sender as RadTextBox).EnabledStyle.ForeColor = System.Drawing.Color.Red;

(sender as RadTextBox).HoveredStyle.ForeColor = System.Drawing.Color.Red;

(sender as RadTextBox).FocusedStyle.ForeColor = System.Drawing.Color.Red;

}

</script>

<!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">

<meta http-equiv="content-type" content="text/html;charset=utf-8" />

<title>RadControls</title>

</head>

<body>

<form id="form1" runat="server">

<asp:ScriptManager ID="ScriptManager1" runat="server" />

<telerik:RadTextBox ID="RadTextBox1" runat="server" OnTextChanged="RadTextBox1_TextChanged" Text="black text" />

<asp:Button ID="Button1" runat="server" Text="PostBack" />

</form>

</body>

</html>

Greetings,
Dimo
the Telerik team

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answered on 27 Feb 2011, 12:47 AM

I'm having the same issue with the RadTextbox's ReadOnlyStyle.ForeColor property, but I am also using Ajax.

In my project, I have a checkbox:

<asp:CheckBox ID="chkIncludeForm" AutoPostBack="true" runat="server" Text="Include Form with this filing." />

When clicked, the remaining RadTextbox controls on the panel are made ReadOnly or Writeable based on the value of the checkbox:

Private Sub chkIncludeForm_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles chkIncludeForm.CheckedChanged

For Each pageControl As Control In pnlForm.Controls

If TypeOf pageControl Is RadTextBox Then

Dim refControl As RadTextBox = CType(pageControl, RadTextBox)

If chkIncludeForm.Checked Then

refControl.ReadOnlyStyle.BackColor = Drawing.Color.AntiqueWhite

refControl.ReadOnly = False

Else

refControl.ReadOnlyStyle.BackColor = Drawing.Color.DarkGray

refControl.ReadOnly = True

End If

Next

End Sub

The page is Ajaxified with the RadAjaxManager, like so:

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="chkIncludeForm">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="pnlForm" LoadingPanelID="ldpForm" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

The click event of the checkbox fires properly on the server and each RadTexbox is disabled accordingly, but the ReadOnlyStyle.BackColor preoprty is not taking effect. Do I need to call the updateCssClass method on the client-side for each control for the change to take effect or is there something else that needs to be done?

Thanks!

Steve