How to check if the file exist in xamarin forms

Question

I want to check if the file inside my device exist. When the variable crphoto1 is empty or the file does not exist the "Photo1" json should be {"Photo1", ""}

JObject ph1json = string.IsNullOrEmpty(crphoto1)
? new JObject
{
    {"ContactID", crcontactID},
    {"Photo1", ""}
}
: new JObject
{
    {"ContactID", crcontactID},
    {"Photo1", File.ReadAllBytes(crphoto1)}
};

So you just want to check if a file exists in device ? – Amadeu Antunes Feb 13 '19 at 05:45 — Amadeu Antunes, Feb 13 '19 at 05:45

Amadeu Antunes · Accepted Answer · 2019-02-13T06:10:17.987

2

If you are just looking for how to check if file exist you can use

    using System.IO;

    string fileName = Path.Combine(Environment
     .GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "yourfile.jpg");

    JObject ph1json;
    bool doesExist = File.Exists(fileName);
    if (!doesExist || string.IsNullOrEmpty(crphoto1))
    {

      ph1json = new JObject 
      {
         {"ContactID",crcontactID},
         { "Photo1",""}
      };
    } 
    else
    {
      ph1json = new JObject
     {
      {"ContactID",crcontactID},
      {"Photo1",File.ReadAllBytes(crphoto1)}
     };
    }

edited Feb 13 '19 at 06:10

answered Feb 13 '19 at 05:52

Amadeu Antunes

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How about in looping I want to skip if the file does not exist do I just add return? – Feb 13 '19 at 06:12
you can use return to skipe the loop if you are using it – Amadeu Antunes Feb 13 '19 at 06:13
you can also use continue; or break; depending what you are really doing – Amadeu Antunes Feb 13 '19 at 06:15
You can read about it here https://stackoverflow.com/questions/6414/c-sharp-loop-break-vs-continue – Amadeu Antunes Feb 13 '19 at 06:16
crphoto1 contains the path file of the image is it ok if I use this "bool doesExist = File.Exists(crphoto1 );"? – Feb 14 '19 at 03:09

How to check if the file exist in xamarin forms

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