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How to apply MultiTasking on the method for processing file and database

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-1

I've created a method which reads some specfic files from a path and have a foreach loop to get a particular info from the files and search that info in database then return the filename and modified date if that info exist in database. how i can apply multiTasking on this method. For example if the loop has count 10 i need to wait till the loop executes for 10 times. instead how can do the looping using Task/Async,Await

`public async Task getFiles(string filePath)
 Directoryinfo[] info=new Directoryinfo(filePath)
 string[] files=info.GetFiles().ToList();
 List<Task> tasks=new List<Task>();
 foreach(var file in files)
 Task t=Task.Run(()=>GetFileDetails(file));
 tasks.Add(t);
 
 await Task.WhenAll(tasks);
 `

Private List<fileData> GetFileDetails()
 //logic
 return fileData;

im getting ThrowInvalidOperation exception.

multithreading async-await task multitasking parallel.foreach

share|improve this question

edited Mar 27 at 9:16

user2514925

asked Mar 22 at 10:45

user2514925user2514925

39561842

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  What have you tried and how did it fail?
  
  – Paulo Morgado
  Mar 22 at 23:03
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I've updated the question
  
  – user2514925
  Mar 27 at 9:23
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I don't know that exception. But I know it must have a stack trace.
  
  – Paulo Morgado
  Mar 27 at 19:23
  

  
  
  
  

add a comment | 

-1

I've created a method which reads some specfic files from a path and have a foreach loop to get a particular info from the files and search that info in database then return the filename and modified date if that info exist in database. how i can apply multiTasking on this method. For example if the loop has count 10 i need to wait till the loop executes for 10 times. instead how can do the looping using Task/Async,Await

`public async Task getFiles(string filePath)
 Directoryinfo[] info=new Directoryinfo(filePath)
 string[] files=info.GetFiles().ToList();
 List<Task> tasks=new List<Task>();
 foreach(var file in files)
 Task t=Task.Run(()=>GetFileDetails(file));
 tasks.Add(t);
 
 await Task.WhenAll(tasks);
 `

Private List<fileData> GetFileDetails()
 //logic
 return fileData;

im getting ThrowInvalidOperation exception.

multithreading async-await task multitasking parallel.foreach

share|improve this question

edited Mar 27 at 9:16

user2514925

asked Mar 22 at 10:45

user2514925user2514925

39561842

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  What have you tried and how did it fail?
  
  – Paulo Morgado
  Mar 22 at 23:03
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I've updated the question
  
  – user2514925
  Mar 27 at 9:23
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I don't know that exception. But I know it must have a stack trace.
  
  – Paulo Morgado
  Mar 27 at 19:23
  

  
  
  
  

add a comment | 

I've created a method which reads some specfic files from a path and have a foreach loop to get a particular info from the files and search that info in database then return the filename and modified date if that info exist in database. how i can apply multiTasking on this method. For example if the loop has count 10 i need to wait till the loop executes for 10 times. instead how can do the looping using Task/Async,Await

`public async Task getFiles(string filePath)
 Directoryinfo[] info=new Directoryinfo(filePath)
 string[] files=info.GetFiles().ToList();
 List<Task> tasks=new List<Task>();
 foreach(var file in files)
 Task t=Task.Run(()=>GetFileDetails(file));
 tasks.Add(t);
 
 await Task.WhenAll(tasks);
 `

Private List<fileData> GetFileDetails()
 //logic
 return fileData;

im getting ThrowInvalidOperation exception.

multithreading async-await task multitasking parallel.foreach

share|improve this question

edited Mar 27 at 9:16

user2514925

asked Mar 22 at 10:45

user2514925user2514925

39561842

`public async Task getFiles(string filePath)
 Directoryinfo[] info=new Directoryinfo(filePath)
 string[] files=info.GetFiles().ToList();
 List<Task> tasks=new List<Task>();
 foreach(var file in files)
 Task t=Task.Run(()=>GetFileDetails(file));
 tasks.Add(t);
 
 await Task.WhenAll(tasks);
 `

Private List<fileData> GetFileDetails()
 //logic
 return fileData;

share|improve this question

edited Mar 27 at 9:16

user2514925

asked Mar 22 at 10:45

user2514925user2514925

39561842

share|improve this question

edited Mar 27 at 9:16

user2514925

asked Mar 22 at 10:45

user2514925user2514925

39561842

asked Mar 22 at 10:45

user2514925user2514925

39561842

asked Mar 22 at 10:45

user2514925user2514925

39561842