I am using RadTextbox in my program as a password:

<telerik:RadAjaxPanel ID="radAjaxPanelUserManagement" runat="server">
        <telerik:RadPanelBar runat="server" ID="radPanelBarUser" Width="100%">
            <Items>
                <telerik:RadPanelItem Enabled="True" Text="Add/Edit User" runat="server" Expanded="false"
                    Visible="false" Value="userMasterPanel">
                    <Items>
                        <telerik:RadPanelItem Enabled="True" runat="server" Value="userPanel" Expanded="false">
                            <ItemTemplate>

<asp:Label ID="lblTextboxPassword" runat="server" Text="Password " CssClass="custom-label"></asp:Label>
<telerik:RadTextBox ID="txtPassword" runat="server" CssClass="custom-txtbox" Rows="1" Width="175px" MaxLength="15" ShowButton="False" SelectionOnFocus="None" TextMode="Password" CausesValidation="true" TabIndex="4" >
</telerik:RadTextBox><asp:Label ID="lblTextboxConfirmPassword" runat="server" Text="Confirm Password "
                                                        CssClass="custom-label"></asp:Label>

<telerik:RadTextBox ID="txtConfirmPassword" runat="server" TextMode="Password" Rows="1"
                                                        MaxLength="15" Width="175px" CssClass="custom-txtbox" CausesValidation="true"
                                                        TabIndex="5" >
                                                    </telerik:RadTextBox>
</ItemTemplate>
                        </telerik:RadPanelItem>
                    </Items>
                </telerik:RadPanelItem>
            </Items>
            <CollapseAnimation Duration="100" Type="None" />
            <ExpandAnimation Duration="100" Type="None" />
        </telerik:RadPanelBar>
    </telerik:RadAjaxPanel>

Issue creates when i want to fill value of this text box on .cs file. That value is not showing on the web page.

public void editUser(Object sender, EventArgs arg)
{
     RadTextBox txtPassword = ((RadTextBox)radPanelBarUser.FindItemByValue(PureAnalyzer_WebApp.UserPanel).FindControl("txtPassword"));
            RadTextBox txtConfirmPassword = RadTextBox)radPanelBarUser.FindItemByValue(PureAnalyzer_WebApp.UserPanel).FindControl("txtConfirmPassword"));

txtPassword.Text="abc#123";
txtConfirmPassword .Text="abc#123";

}

In this code i want to fill value of fill some dynamic value to radtextbox but this shows as a blank. 
Please help me in this issue.

Hi atul,

The described behavior is rather expected. You can replicate it with ASP:TextBox and html <input> controls. And this is done on purpose for security reasons.
However you can overcome this limitation if you try to set the text as below:


Regards,
Iana
the Telerik team