how can i assign each file name in global array?

Question

I use multiple file upload and I want to assign each file name with the global array called img using the foreach how can I do it in asp.net/c#?

string[] img={""};

foreach (string s in Request.Files) {
    HttpPostedFile file = Request.Files[s];
    int fileSizeInBytes = file.ContentLength;
    string fileName = file.FileName;
    string fileExtension = "";

    if (!string.IsNullOrEmpty(fileName)) {
        fileExtension = Path.GetExtension(fileName);
        file.SaveAs(filename);
    }
}

Community · Accepted Answer · 2017-04-12 07:31:21Z

2

I would use a List<string> for this purpose:

List<string> img = new List<string>();

foreach (string s in Request.Files)
{
    HttpPostedFile file = Request.Files[s];
    int fileSizeInBytes = file.ContentLength;
    string fileName = file.FileName;
    string fileExtension = "";

    if (!string.IsNullOrEmpty(fileName))
    {
        img.add(fileName);
        fileExtension = Path.GetExtension(fileName);
        file.SaveAs(filename);
    }

Here is a great explanation on why List<T> is almost always better than using an array in C#: https://softwareengineering.stackexchange.com/a/221897

If you give us a little better explanation of what you're trying to accomplish, I could probably improve on this answer.

edited Apr 12, 2017 at 7:31

CommunityBot

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answered Feb 24, 2016 at 22:10

Ageonix

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4 Comments

Mohammed Ajjawi Over a year ago

thank you, i have a table of items contain img1,img2,img3 and img4 i want to insert the paths of images into those columns img1,img2,etc using linq to sql so i decided to assign each path in array and then assign the array index with the linq

Ageonix Over a year ago

You can get an item by index in a List<T> the same way you can in an array. Just simply use: int myFirstImg = img[0];

Mohammed Ajjawi Over a year ago

thanks, but when int myFirstImg = img[0]; it show this error System.ArgumentOutOfRangeException

Ageonix Over a year ago

That's because you're referencing an index that doesn't exist. Just check that it exists or that img.Count > 0 (or whatever number you need).

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