The WebColumnCheckbox is an object, used to add a click-to-toggle control in your WebList or WebGrid. The WebColumCheckbox is only editable in a WebGrid because a WebList is readonly. A checkbox is mostly used to display true-false or yes-no values and appears as a square box which you can click on or off. The appearance of the box indicates whether it is checked with a checkmark. The OnChange procedure must be implemented to save the change direct to the database. Let me show you how I worked this out in the next example.

DEMONSTRATION

This example demonstrates a web view containing a data dictionary and a WebGrid whose rows and columns are populated from the data dictionary.
The WebGrid is augmented with the OnLoad event to ‘seed’ the data when it is loaded for the first time.
First let me show you how to implement the OnChange procedure in the object.
I created a checkbox for the active column of the customer. I want to save the changes immediately to the database if I change the value of the checkbox. This can be done with the onchange procedure. I don’t have to check if the value is changed, because this is always the case with a checkbox in this context. A simple request_validate and request_save is enough to save the changes. Other changes made in the row of the grid are automatically saved.
It’s also possible to check if a checkbox is checked or not. You can use the GetChecked function and SetChecked procedure for this.
This demo demonstrated how easy it is to implement checkboxes in a webgrid.

Getting to know the Web Controls

DataFlex courses

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Getting to know the Web Controls

Lesson 7 - WebColumnCheckbox