如何将列表框中选择的值分配给枚举变量？

我想避免以下问题：

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 ( . . .) } 

有没有一种方法可以更优雅或雄辩地根据列表框选择分配给枚举，如：

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

？

Answer 1

你可以尝试这样的事情

 Array values = Enum.GetValues(typeof(BeltPrinterType));//If this doesn't help in compact framework try below code Array values = GetBeltPrinterTypes();//this should work, rest all same foreach (var item in values) { listbox.Items.Add(item); } private static BeltPrinterType[] GetBeltPrinterTypes() { FieldInfo[] fi = typeof(BeltPrinterType).GetFields(BindingFlags.Static | BindingFlags.Public); BeltPrinterType[] values = new BeltPrinterType[fi.Length]; for (int i = 0; i < fi.Length; i++) { values[i] = (BeltPrinterType)fi[i].GetValue(null); } return values; } private void listBoxBeltPrinters_SelectedIndexChanged(object sender, System.EventArgs e) { if(!(listBoxBeltPrinters.SelectedItem is BeltPrinterType)) { return; } PrintUtils.printerChoice = (BeltPrinterType)listBoxBeltPrinters.SelectedItem; } 

Answer 2

使用Enum.Parse，您可以从字符串转换为枚举。

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

还有方法Enum.TryParse返回一个bool，指示解析是否成功。