Wednesday, January 11, 2012

How TO Write an Edit Method

Question:
How to write an edit method?


Answer:
Suppose you have an integer field with allowed values of 0 and 1. We can use an edit method to show a check box instead. We just have to use this edit method as a display method on the form control.


public edit NoYesId IsAllowed(boolean _set, NoYesId _value)
{
    NoYesId ret;
    int actualValue;
    if (_set)
    {
        if(_value == NoYes::Yes)
        {
            actualValue = 1;
        }
        ttsbegin;
        this.IsAllowedInt = actualValue;
        this.update();
        ttscommit;
    }
    else
    {
        if(this.IsAllowedInt)
        {
            ret = NoYes::Yes;
        }
    }
    return ret;
}

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