error: Failed to render "Descript" column because of an error in the &quot

I develop a richtext custom field type ascx control.
When I am setting a value in sharepoint page to my custom field, i inspect the value of arichNumber.GetDesignTimeHtml()and it gives me this errored value:

"<span dir=\"none\">\r\n\t\t<span dir=\"ltr\">\r\n\t\t\t<span class=\"ms-formvalidation\">Failed to render &quot;Descript&quot; column because of an error in the &quot;Phone Number&quot; field type control. See details in log. Exception message: Control &#39;ctl00_m_g_663a2e24_fbea_471e_b0c1_a2eb2566a10b_ctl00_ctl04_ctl03_ctl00_ctl00_ctl04_ctl00_ctl00_richNumber_ctl00_TextField&#39; of type &#39;TextBox&#39; must be placed inside a form tag with runat=server.. </span>" string....

Just to let you know
the custom field ascx control is defined like this:

<%@ Control Language="C#" Debug="true" %>

<%@Assembly Name="Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@Register TagPrefix="SharePoint" Assembly="Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" namespace="Microsoft.SharePoint.WebControls"%>

<SharePoint:RenderingTemplate ID="TelephoneFieldControl" runat="server">

<Template>

<SharePoint:RichTextField ID="richNumber" runat="server" ></SharePoint:RichTextField>

</Template>

</SharePoint:RenderingTemplate>

and the cs class for the control has this overriden method (the get method is what executes when i set a value for my custom richtext custom field control)

public override object Value
{

get
{

if (Field == null) return;

if (ControlMode == Microsoft.SharePoint.WebControls.SPControlMode.Display)

return;

richNumber = (Microsoft.SharePoint.WebControls.RichTextField)TemplateContainer.FindControl("richNumber");
if (richNumber == null)

throw new ArgumentException("RichNumber is null. Corrupted ascx file.");

richNumber.TabIndex = TabIndex;

richNumber.CssClass = CssClass;

return richNumber.GetDesignTimeHtml();
//Text.Trim();

}

set
{

........etc

}

}

Thank thee :)

[3455 byte] By [rtaiss] at [2007-12-29]