Using attributes to start function

Question

I have a function that uses a stopwatch instance and measure time of any method put inside. now, I have to start and stop that for every method. I want to so this now using attribute. I want to place just an attribute over every method which automatically starts and stops my function which measures the time.

The code of function:

 [DataContract]
[Serializable]

public class AppTrace:BaseModel<AppTrace>
{
    [DataMember]
    public string Comment;
    [DataMember]
    public string MethodName;
    [DataMember]
    public DateTime StartTimeStamp;
    [DataMember]
    public int Duration;
    [DataMember]
    public int UserObjectId;
    [DataMember]
    public string MachineName;
    [DataMember]
    public int ToolId;
    private System.Diagnostics.Stopwatch stpWatch;

public AppTrace(string comment,string methodName,int userObjectId ,string machineName = "",int? toolId=null)

    {
        MethodName = methodName;
        UserObjectId = userObjectId;
        StartTimeStamp = DateTime.UtcNow;
        Comment = comment;
        MachineName = machineName;

        stpWatch = new System.Diagnostics.Stopwatch();
        stpWatch.Start();
    }

    public AppTrace()
    {
    }

    public void CloseTrace()
    {
        this.stpWatch.Stop();
        Duration=Convert.ToInt32( this.stpWatch.ElapsedMilliseconds);
    }

Can you please include the code you have tried in the question. — Hannes Johansson, Jul 08 '15 at 05:33
now instead of calling AppTrace and Close trace everytime i want to use a function, can i do the decoration with just an attrubute that automatically starts and stops this. — shambhavi chandra, Jul 08 '15 at 06:01

score 0 · Answer 1 · edited May 23 '17 at 12:21

0

That probably won't work with only the .NET Framework. Aspect oriented programming is implemented by various third party providers, Postsharp probably being the most used.

You can implement your own attributes, but without an AOP framework, they will not execute any code for you. They are just metadata that you can query with reflection.

edited May 23 '17 at 12:21

Community

1
1

answered Jul 08 '15 at 05:32

nvoigt

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Thank you :) AOP is really helpful. – shambhavi chandra Jul 08 '15 at 08:07
Is there any way to do this except Aop. i don't want to use third party library. – shambhavi chandra Jul 14 '15 at 07:01
If you have a unified caller (for example a kind of factory calling all your methods) then that could query the attributes. But if your caller is *anybody* then no, there is no way to use attributes to execute code without third party AOP tools. – nvoigt Jul 14 '15 at 09:21

score 0 · Answer 2 · answered Jul 08 '15 at 05:46

Another way to solve this, would be something like :

protected void StopwatchThis(Action func)
        {
            //some code
            func.Invoke();
            //more code
        }

So if you are doing some optimization and want to test the run time, you could basicly just delegate your methods to this function and get the output.

question bit too broad

Using attributes to start function

2 Answers2