Can I have a method returning IEnumerator and use it in a foreach loop? *

Question

I need to set the height of every textbox on my form, some of which are nested within other controls. I thought I could do something like this:

private static IEnumerator<TextBox> FindTextBoxes(Control rootControl)
{
    foreach (Control control in rootControl.Controls)
    {
        if (control.Controls.Count > 0)
        {
            // Recursively search for any TextBoxes within each child control
            foreach (TextBox textBox in FindTextBoxes(control))
            {
                yield return textBox;
            }
        }

        TextBox textBox2 = control as TextBox;
        if (textBox2 != null)
        {
            yield return textBox2;
        }
    }
}

Using it like this:

foreach(TextBox textBox in FindTextBoxes(this))
{
    textBox.Height = height;
}

But of course the compiler spits its dummy, because foreach expects an IEnumerable rather than an IEnumerator.

Is there a way to do this without having to create a separate class with a GetEnumerator() method?

Answer

As the compiler is telling you, you need to change your return type to IEnumerable. That is how the yield return syntax works.

< br > via < a class="StackLink" href=" http://stackoverflow.com/questions/3315/" >Can I have a method returning IEnumerator and use it in a foreach loop?< /a>

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