Question Datarepeater Checkbox Issue

[lynxbct]

This is a follow on from a post I raised yesterday in relation to issues with binding data to a datarepeater. I have gotten to the source of the problem but am not quite sure how to correct it.

I have a checkbox as a control in a datarepeater object. I have an event handler function which handles the checkchanged event for this checkbox and sets the visibility of other fields based on it.
However, the problem I am having is that the event handler function is getting fired when I set the datasource for the datarepeater - hence when the data is being populated. So the event handler function ends up trying to set the visibility of a field that has not been created yet and bombs out with a NullReferenceException error.

Is there a way to stop this event handler being fired when the datarepeater is being populated? I only want this function to be called if that checkbox is changed by the user after the form has loaded.

 

[lynxbct]

Have just changed the event handler function to act on the Click event of the checkbox rather than the CheckChanged and it appears to work OK.

 

[lynxbct]

Fixed!!

Found out what the source of the problem was. I had a checkbox and a number of comboboxes in my datarepeater. I had event handlers for all these fields. For example, if the checkbox was ticked I wanted to hide all other fields on that row of the datarepeater. What was happening was that these event handlers were being fired when the datarepeater was databound. As a result, the function was trying to hide fields which had not been created yet.

I have just prevented the functions carrying out the tasks if they are called when the data is binding. Problem Solved!!