public static object GetCustomFormulaValue(string str)
{
string vb = @"[$](.*?)[$]";
foreach (Match item in Regex.Matches(str, vb, RegexOptions.IgnoreCase))
{
string bbb = item.ToString();
int index = str.IndexOf(bbb);
if (index > 0)
{
char frontChar = str[index - 1];
char behindChar = str.Length > index + bbb.Length ? str[index + bbb.Length] : new char();
if (frontChar.Equals(',') || frontChar.Equals('('))
{
string str2 = str.Substring(0, index);
string str2Reverse = new string(str2.ToCharArray().Reverse().ToArray());
CustomFormulaMethodType cfmt = GetFormulaIndex(str2Reverse, frontChar, behindChar);
switch (cfmt)
{
case CustomFormulaMethodType.CustomError:
return("无法计算");
case CustomFormulaMethodType.FunctionParamInvalid:
return("无法计算");
case CustomFormulaMethodType.RemoveCurrentParam:
str = str.Remove(index - 1, bbb.Length + 1);
; break;
case CustomFormulaMethodType.DefaultIsZero:
str = str.Remove(index, bbb.Length).Insert(index, "0");
; break;
case CustomFormulaMethodType.DefaultIsOne:
str = str.Remove(index, bbb.Length).Insert(index, "1");
; break;
}
}
else
{
//该出为符号
return("无法计算");
}
}
}
return(CustomFormula.GetTheValueOfCustomFormula(str));
}
static void Main(string[] args)
{
//.net 自带类库 但是不支持max等函数操作
//MSScriptControl.ScriptControl sc = new MSScriptControl.ScriptControlClass();
//sc.Language = "JavaScript";
//Console.WriteLine(sc.Eval(""));//1+12+3
DateTime d1 = DateTime.Now;
for (int i = 0; i < 1000; i++)
{
string str = "cproduct($1$)+csum($2$,1,3)*cavg(2,$1$)";
Dictionary <string, string> controlIdValueDic = new Dictionary <string, string>();
//把有值的替换进str;
controlIdValueDic.Add("1", "2.12312");
foreach (var item in controlIdValueDic)
{
str = str.Replace($"${item.Key}$", item.Value);
}
object value = CustomFormula.GetCustomFormulaValue(str);
//Console.WriteLine(str);
//Console.WriteLine(value);
Console.WriteLine(i);
}
;
Console.WriteLine(DateTime.Now.Subtract(d1));
//NCalc
//var expr = new Expression("Avg()");
//expr.EvaluateFunction += NCalcExtensionFunctions;
//try
//{
// var result = expr.Evaluate();
// Console.WriteLine(result);
//}
//catch (Exception ex)
//{
// Console.WriteLine(ex.Message);
//}
#region
//List<ReceiveFormsControl> list = new List<ReceiveFormsControl>();
//list.Add(new ReceiveFormsControl
//{
// TempId=1,
// Controls = new List<ReceiveControl> {
// new ReceiveControl() {
// ControlName= "单行文本框",
// IsFilter = false,
// Type = 1,
// Hint = "引导文字",
// Validate = false,
// Dot=0,
// Unit="",
// EnumDefault = 0,
// PrintHide = false,
// Required = false,
// NeedSum = false,
// Row =0,
// Col =0,
// InnerRow = 1
// },
// new ReceiveControl
// {
// ControlName= "数值",
// IsFilter = false,
// Type = 6,
// Hint = "填写数值",
// Validate = false,
// Dot=2,
// Unit="个",
// EnumDefault = 0,
// PrintHide = false,
// Required = false,
// NeedSum = false,
// Row =0,
// Col =0,
// InnerRow = 2
// }
// }
//});
//string a = JsonConvert.SerializeObject(list);
//Console.ReadKey();
//Task t1 = Task.Run(()=>{
// throw new Exception("hahah");
// System.Threading.Thread.Sleep(5000);
// Console.WriteLine("123");
//});
//Task t2 = Task.Run(() => {
// throw new Exception("lalala");
// System.Threading.Thread.Sleep(8000);
// Console.WriteLine("223");
//});
//try
//{
// Task.WaitAll(t1, t2);
//}
//catch (Exception ex)
//{
// t1.Dispose();
// t2.Dispose();
// Console.WriteLine(ex);
//}
#endregion
Console.ReadKey();
}