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in Technique[技术] by (71.8m points)

c# - How can I assign the value selected in a listbox to an enum var?

I want to avoid the kludginess of:

private void listBoxBeltPrinters_SelectedIndexChanged(object sender, System.EventArgs e)
{
    string sel = string listBoxBeltPrinters.SelectedItem.ToString();
    if (sel == "Zebra QL220")
    {
        PrintUtils.printerChoice = PrintUtils.BeltPrinterType.ZebraQL220;
    }
    else if (sel == "ONiel")
    {
        PrintUtils.printerChoice = PrintUtils.BeltPrinterType.ONiel;
    }
    else if ( . . .)
}

Is there a way I can more elegantly or eloquently assign to an enum based on a list box selection, something like:

PrintUtils.printerChoice = listBoxBeltPrinters.SelectedItem.ToEnum(PrintUtils.BeltPrinterType)?

?

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by (71.8m points)

With Enum.Parse you could convert from a string to a Enum.

PrintUtils.printerChoice = (PrintUtils.BeltPrinterType)Enum.Parse(typeof(PrintUtils.BeltPrinterType),listBoxeltPrinters.SelectedItem);

Also there is method Enum.TryParse which returns a bool indicating if the parse is succeeded.


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