Thanks Philip Beadle for help problem from codefile="xxxxxx"codebehind="xxxxxx" now if i click on save changes i get this error wat must i do ? Unable to cast object of type 'System.Web.UI.HtmlControls.HtmlGenericControl' to type 'System.Web.UI.WebControls.TextBox'.

Philip Beadle Thanks You for your efforts to help me,,Know you always help you to others, and comments right. This is code: Protected WithEvents asContainer As System.Web.UI.HtmlControls.HtmlGenericControl Private Sub RenderDynamicControls() Dim docType As New DocumentType(thisModuleID, thisDoc.DocumentTypeID) tblPageHeight.Height = docType.Height + 72 + 5 'DocHeight + ActionBar + Some Extra Spacing Dim thisField As Field ctls = New DynamicControlCollection Dim Ctl As DynamicControl Dim ControlList As String 'Convert the fields into Dynamic Controls For Each thisField In thisDoc.DocumentFields Dim newCTL As New DynamicControl(thisField.FieldID, thisField.ControlType, thisField.DisplayName, thisField.xCoOrd, thisField.yCoOrd, thisField.Height, thisField.Width, thisField.DefaultValue, thisField.FieldID, thisModuleID, thisField.ResourceKey, thisField.FieldValue, thisField.TextMode, docType.FieldSecurity, thisField.IsRequired, thisField.IsRequiredText, thisField.IsRequiredFailText, thisDoc.SecurityLevels, thisField.SecurityLevels) ctls.Add(newCTL) Next ctls.RenderControls(asContainer, True)