MSScriptControl .net 后台接收并计算前端输入的计算表达式

public decimal CalculateExpressionValue(string expression, int decimalDigit)
{
decimal value = 0m;
if (string.IsNullOrEmpty(expression))
{
return value;
}
object va = 0;
try
{
MSScriptControl.ScriptControl sc = new MSScriptControl.ScriptControl();
sc.Language = "JavaScript";
va = sc.Eval(expression);

sc.Reset();
value = Convert.ToDecimal(va);
value = Decimal.Round(value, decimalDigit);

}
catch (Exception ex)
{
return 0m;
}

return value;
}