Collection Of List in c# - add files to list

Question

1.00/5 (1 vote)

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C#

List<EventFile> CollectionsOfEvtfiles = new List<EventFile>();

if (args.IsOffline)
{
    using (SqlConnection conn = new SqlConnection(Db.ConnectionString))
    {
        conn.Open();
        FileHelper.ImportFile(Entities, newEventFile, ImportMode.ManualMode, false, conn,IsCellCreated);
        if (newEventFile.RecordsCount!=0)
        {
            CollectionsOfEvtfiles.Add(newEventFile);
        }
    }
}

In my code import multiple files. It working fine. But when add the files in list, It add last file only in list. (Ex. I am importing 5 files, But finally it take last file only to add list)Please help me.. i want to add all files in list

Posted 19-Feb-15 20:35pm

Rnshanmugavadivel

Updated 19-Feb-15 20:56pm

Tomas Takac

v2

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Comments

TheRealSteveJudge 20-Feb-15 2:43am

Do you want to append a list of event files to an existing list of event files?

Tomas Takac 20-Feb-15 3:00am

How do you import 5 files? Your sample only imports one file.

SaranshSrivastava 20-Feb-15 3:29am

Use AddRange() method of List instead Add. Like below:
string[] input = { "Apple",
"Orange",
"Apricots" };

List<string> fruits= new List<string>();
Console.WriteLine("\nAddRange(fruits)");
fruits.AddRange(input);

Console.WriteLine();
foreach( string fruit in fruits)
{
Console.WriteLine(fruit);
}

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SaranshSrivastava · Answer 1 · 2015-02-19T21:28:00

Use AddRange() method of List instead Add. Like below:

C#

string[] input = { "Apple",
                           "Orange",
                           "Apricots" };

        List<string> fruits= new List<string>();
        Console.WriteLine("\nAddRange(fruits)");
        fruits.AddRange(input);

        Console.WriteLine();
        foreach( string fruit in fruits)
        {
            Console.WriteLine(fruit);
        }

Neetin_1809 · Answer 2 · 2015-02-19T21:40:00

Hello Rnshanmugavadivel,

Seeing Your Code you are checking

C#

if (newEventFile.RecordsCount!=0)
        {
            CollectionsOfEvtfiles.Add(newEventFile);//Error Point
        }

Simply you are adding only One Time..
Either you run the loop
or ANotheir way Use AdddRange Method.
which Adds the elements of the specified collection to the end of the List.

See The example & Try It

C#

using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
    List<int> a = new List<int>();
    a.Add(1);
    a.Add(2);
    a.Add(5);
    a.Add(6);

    // Contains:
    // 1
    // 2
    // 5
    // 6

    int[] b = new int[3];
    b[0] = 7;
    b[1] = 6;
    b[2] = 7;
     //adding Multiple Items
    a.AddRange(b);

    // Contains:
    // 1
    // 2
    // 5
    // 6
    // 7 [added]
    // 6 [added]
    // 7 [added]
    foreach (int i in a)
    {
        Console.WriteLine(i);
    }
    }
}

Hope It Helps You.

Collection Of List in c# - add files to list

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