How to load Controls from RadDock using WebUserControl?

[Ian David]

I am having a hard time trying to load my controls inside a RadDock that uses ascx.\

This is my code (it is same as the Portal Demo)

protected void ButtonAddDock_Click(object sender, EventArgs e)
        {
            RadDock dock = CreateRadDock();
            RadDockZone dz = RadDockZone1;


            RadDockLayout1.Controls.Add(dock);
            dock.Dock(dz);
            CreateSaveStateTrigger(dock);

            dock.Tag = "Templates/NewQuiz.ascx";
            LoadWidget(dock);

        }
private void LoadWidget(RadDock dock)
        {
            if (string.IsNullOrEmpty(dock.Tag) || dock.Closed)
            {
                return;
            }
            Control widget = LoadControl(dock.Tag);
            widget.EnableViewState = false;
            dock.ContentContainer.Controls.Add(widget);
        }
protected void btnSaveDraft_Click(object sender, EventArgs e)
        {
            string[] questions = {};
            int x = 0;
            foreach (RadDock dock in RadDockLayout1.RegisteredDocks)
            {
                RadTextBox txtQuestion = (RadTextBox)dock.ContentContainer.FindControl("txtQuestion");
                questions[x]= txtQuestion.Text;
                x++;
            }
}

And here is my ASCX

<center style="padding-top: 15px;">
    <table style="text-align: justify;">
        <tr>
            <td style="width: 15%;">
                Question:
            </td>
            <td>
                <telerik:RadTextBox ID="txtQuestion" runat="server" Width="100%">
                </telerik:RadTextBox>
            </td>
        </tr>
        <tr>
            <td style="width: 15%;">
                Help Text:
            </td>
            <td>
                <telerik:RadTextBox ID="txtHelp" runat="server" Width="100%">
                </telerik:RadTextBox>
            </td>
        </tr>
        <tr>
            <td style="width: 15%;">
                Mandatory:
            </td>
            <td>
                <asp:CheckBox ID="chkMandatory" runat="server" />
            </td>
        </tr>
        <tr>
            <td style="width: 15%;">
                Question Weight:
            </td>
            <td>
                <telerik:RadTextBox ID="txtWeight" runat="server" Width="30px" Text="1">
                </telerik:RadTextBox>
            </td>
        </tr>
        <tr>
            <td style="width: 15%;">
                Question Type:
            </td>
            <td>
                <telerik:RadComboBox ID="ddlType" runat="server" AutoPostBack="True">
                    <Items>
                        <telerik:RadComboBoxItem runat="server" Selected="True" Text="--Select Question Type--"
                            Value="--Select Question Type--" />
                        <telerik:RadComboBoxItem runat="server" Text="Multiple Choice - Radio Button" Value="Multiple Choice - Radio Button" />
                        <telerik:RadComboBoxItem runat="server" Text="Multiple Choice - Check Box" Value="Multiple Choice - Check Box" />
                    </Items>
                </telerik:RadComboBox>
            </td>
        </tr>
    </table>
</center>

The code in my aspx can't find the txtQuestion textbox. 

[Slav]

Hi Ian,

The RadTextBox is in the user control that is loaded in the ContentContainer of the RadDock, so you should first get a reference to the user control in order to retrieve the text box. The following code sample will help you do this:

RadTextBox txtQuestion = ((UserControl)dock.ContentContainer.Controls[0]).FindControl("txtQuestion") as RadTextBox;

Greetings,
Slav
the Telerik team

[Ian David]

Hi Slav,

It worked! Thank you for the reply. So, that is how I can call the controls inside a UserControl. At first I'm trying to do this :

UserControl userControl = (UserControl)dock.FindControl(dock.Tag);
RadTextBox txtQuestion = (RadTextbox)userControl.FindControl("txtQuestion");

But it's not returning any value too. I thought I would never learn how to work on this. Thanks again!