CODEWITHSUNDEEP
c#xamarinxamarin.formsxamarin.android
Bogmadur
Bogmadur

Reputation: 25

Read from a file in Xamarin

I have an issue reading my .txt file in Xamarin and I have not find any solution that helps me, I also looked in Stack Overflow's suggestions before I published this.

My app is only Android and I want to randomize a line from the file, I have first made it in C# with console and looks like this =>

String[] Card = System.IO.File.ReadAllLines(@"D:\Cards.txt");
//string[] Card = { "one", "two", "Three", "Four", "Five", "Six" }; this is what is in the file.

However now when I try to do this in Xamarin the filepath is on my computer and not in my phone. I read at one site to make it an Asset as picture below shows. (I have also tried build action as AndroidAsset)

enter image description here

I am not sure now if my code is wrong or if it is possible to read from a file. Underneath are 2 examples that I have tried but there are a few more that I have tried but that code is deleted now.

String[] text = File.ReadAllLines(Assets.Open("Cards.txt"));


    var currentPath = System.Environment.DataDirectory;
    var Filename = Path.Combine(currentPath, "Cards.txt");
    String[] text = File.ReadAllLines(Filename);

I have tried this now but it will not work as an array.

        string[] content;
        AssetManager assets = this.Assets;
        using (StreamReader sr = new StreamReader(assets.Open("Cards.txt")))
        {
            content[] = sr.ReadToEnd();
        }
        
        txtNumber.Text = content[3];

I want the result to be line 3 in the Cards.txt file which will be three.

Upvotes: 1

Views: 5548

Answers (2)

Bogmadur
Bogmadur

Reputation: 25

i successfully solved it like this:

string content;
        string[] cards = new string[] { "" }; //created a empty string array
        AssetManager assets = this.Assets;
        using (StreamReader sr = new StreamReader(assets.Open("Cards.txt")))
        {  
            content = sr.ReadToEnd();

        }

        cards = content.Split('\n'); //Split the content after a new row.

        txtNumber.Text = cards[0]; //I changed the number inside cards[3] and it was showing correct value in the txt document.

Upvotes: 0

SomeStudent
SomeStudent

Reputation: 3048

Assuming that code lives inside of your Xamarin.Android folder, and it is not in the PCL library, you could try something like this: 

string content;
AssetManager assets = this.Assets;
using (StreamReader sr = new StreamReader (assets.Open ("read_asset.txt")))
{
    content = sr.ReadToEnd ();
}

Upvotes: 2

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