CODEWITHSUNDEEP
c#sqlitesqlconnection
B Minster
B Minster

Reputation: 341

Connecting to SQLite DB over network

I am currently mapping a network drive and connecting to the file (Z:\Data\Database.db) that way. I would like to be able to just use a relative path (\server\Data\Database.db) in the connection string but it is giving me a SQLite error "unable to open database file". A Directory.Exists(\\server\Data\Database.db); check is returning true.

Here is the attempt to open the connection using the path "\\server" as the argument:

public static OpenDB(string dbPath)
{
    using (SQLiteConnection conn = new SQLiteConnection($"Data Source={Path.Combine(dbPath, "Data\\Database.db")}"))
    {
        if (dbPath != null && dbPath != "")
        {
            try
            {
                conn.Open();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Unable to Open Database", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
    }
}

Upvotes: 5

Views: 1592

Answers (1)

B Minster
B Minster

Reputation: 341

This was the solution that I used. It is a combination of advice from jdweng and Shawn. First I made the path dbPath be an administrative share drive. From there I made the program make a temporary local copy of the database from the administrative share:

private static void MakeTempDatabaseCopy(string dbPath, string exePath)
{
    try
    {
        File.Copy(Path.Combine(dbPath, "Data", "Database.db"), Path.Combine(exePath, "Temp", "Database.db"), true);
        FileInfo directoryInfo = new FileInfo(Path.Combine(exePath, "Temp", "Database.db"));
        directoryInfo.Attributes = FileAttributes.Temporary;
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message, "Error Retrieving Database", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }
}

After that all methods can read from the local copy. Since the File.Copy() uses the Boolean, anything that requires a refresh of the database can just overwrite the local copy with a fresh copy from the administrative share. Hope this helps!

Upvotes: 3

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