CODEWITHSUNDEEP
c#.netvb.net
azim
azim

Reputation: 595

How to Check File pattern exists on HTTP?

I need to check if a file or no. of files having a pattern in their file names are available on HTTP. and IF present then next will be to download them.

I know to check a particular file directly on HTTP but I am not sure how to achieve this with File name pattern like abc*.csv?

Upvotes: 0

Views: 283

Answers (1)

Tinwor
Tinwor

Reputation: 7973

First of all you must check if the page exist: 

using System.Net;
...
private bool CheckIfRemoteFileExist(string url){
    try
    {
        //Creating the HttpWebRequest
        HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
        //Setting the Request method HEAD, you can also use GET too.
        request.Method = "HEAD";
        //Getting the Web Response.
        HttpWebResponse response = request.GetResponse() as HttpWebResponse;
        //Returns TURE if the Status code == 200
        return (response.StatusCode == HttpStatusCode.OK);
    }
    catch
    {
        //Any exception will returns false.
        return false;
    }
}

Then, if it exist, you can download the page: 

string content=string.Empty;
if(CheckIfRemoteFileExist("myUrl"))
    using(var client = new WebClient())
        content = client.DownloadString("myUrl");
else
    MessageBox.Show("File seems dosen't exist");

Upvotes: 1

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