CODEWITHSUNDEEP
c#-4.0
Hemanth
Hemanth

Reputation: 413

Add a string property to a linklabel?

I am currently making an "app launcher" which reads a text file line by line. Each line is a path to a useful program somewhere else on my pc. A link label is automatically made for each path (i.e. each line) in the text file.

I would like the .Text property of the link label to be an abbreviated form of the path (i.e. just the file name, not the whole path). I have found out how to shorten the string in this way (so far so good !)

However, I would also like to store the full path somewhere - as this is what my linklabel will need to link to. In Javascript I could pretty much just add this property to linklabel like so: mylinklabel.fullpath=line; (where line is the current line as we read through the text file, and fullpath is my "custom" property that I would like to try and add to the link label. I guess it needs declaring, but I am not sure how.

Below is the part of my code which creates the form, reads the text file line by line and creates a link label for the path found on each line:

private void Form1_Load(object sender, EventArgs e)   //on form load
{
  //System.Console.WriteLine("hello!");
  int counter = 0;
  string line;
  string filenameNoExtension;
  string myfile = @"c:\\users\matt\desktop\file.txt";

  //string filenameNoExtension = Path.GetFileNameWithoutExtension(myfile);


  // Read the file and display it line by line.
  System.IO.StreamReader file = new System.IO.StreamReader(myfile);
  while ((line = file.ReadLine()) != null)
  {
    //MessageBox.Show(line);   //check whats on each line


    LinkLabel mylinklabel = new LinkLabel(); 
    filenameNoExtension = Path.GetFileNameWithoutExtension(line);  //shortens the path to just the file name without extension
    mylinklabel.Text = filenameNoExtension;
    //string fullpath=line;      //doesn't work
    //mylinklabel.fullpath=line;   //doesn't work
    mylinklabel.Text = filenameNoExtension;  //displays the shortened path
    this.Controls.Add(mylinklabel);
    mylinklabel.Location = new Point(0, 30 + counter * 30);
    mylinklabel.AutoSize = true;
    mylinklabel.VisitedLinkColor = System.Drawing.Color.White;
    mylinklabel.LinkColor = System.Drawing.Color.White;



    mylinklabel.Click += new System.EventHandler(LinkClick);


    counter++;
  }

  file.Close();

}

So, how can I store a full path as a string inside the linklabel for use in my onclick function later on?

Upvotes: 0

Views: 287

Answers (2)

PsychoCoder
PsychoCoder

Reputation: 10755

One option you have is to have a method that truncates your string (and even adds "..."). You can then store the full path in the Tag property of the Linklabel. And here's an example of the first part (truncating the text).

public static string Truncate(this string s, int maxLength)
{
    if (string.IsNullOrEmpty(s) || maxLength <= 0)
        return string.Empty;
    else if (s.Length > maxLength)
        return s.Substring(0, maxLength) + "...";
    else
        return s;
}

Hope that helps some

Upvotes: 0

rerun
rerun

Reputation: 25505

You could derive a new custom class or you could use a secondary data store for your additional info the easiest solution would be to use a dictionary. 

dictonary<string,string> FilePaths = new dictonary<string,string>();

private void Form1_Load(object sender, EventArgs e)   //on form load
{
    ...

    FilePath[filenameNoExtension] = line;
}

You Can Access the Path 

FilePath[mylinklabel.Tex]

Upvotes: 1

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