Unable to retrieve value from a textbox

[btcarelli]

How do we retrieve the value from a textbox? I tried using FormItem.getDisplayValue(), which doesn’t return anything. I tried using FormItem.getValue() but got an error message(see below).

ERROR MESSAGE:
[ERROR] Unable to load module entry point class com.trgrp.fits.client.module.invoiceSAD.InvoiceSADTopPanel (see associated exception for details)
com.google.gwt.core.client.JavaScriptException: (TypeError): Object doesn't support this property or method
number: -2146827850
description: Object doesn't support this property or method
at com.smartgwt.client.widgets.form.fields.FormItem.getValue(Native Method)
at com.trgrp.fits.client.module.invoiceSAD.InvoiceSADSummary4.<init>(InvoiceSADSummary4.java:64)
at com.trgrp.fits.client.module.invoiceSAD.InvoiceSADTopPanel.onModuleLoad(InvoiceSADTopPanel.java:123)

[smartgwt.dev]

You should call this method only after the DynamicForm that it belongs to is rendered.

[btcarelli]

The DynamicForm is rendered when we call the method

[smartgwt.dev]

Please post a simplified standalone testcase demonstrating the issue.