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Remebering the last saved directory path in a saveFileDialog

Posted on 2006-07-23
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Last Modified: 2008-01-09

Hi all,

I am implementing a saveFileDialog in C# . First time when I choose a directory to save a file, I want to remember it so that for the second time , I do not have to start from my C: drive and go to the previously saved directory.

There should be a easy way to do, and your help on this is appreciated.

Ramesh
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Question by:Ramesh4u
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7 Comments
 
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Accepted Solution

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anarki_jimbel earned 100 total points
ID: 17165107
It depends on what you call "an easy way"

I believe the easies way is to save the file (directory) path into a text or xml file.
If it's a text file you just write or read one line

public string readPath()
{
  // create reader & open file
  TextReader tr = new StreamReader("path.txt");// or (Application.StartupPath + "\\" + "path.txt")

  // read a line of text
  string path = tr.ReadLine();

  // close the stream
  tr.Close();
 
  return path;
}

You need to add error handling if no file exists (return "C:\")

public void writePath(string path)
{
  // create a writer and open the file
  TextWriter tw = new StreamWriter("path.txt"); // or (Application.StartupPath + "\\" + "path.txt")

  // write a line of text to the file
  tw.WriteLine(path);

  // close the stream
  tw.Close();

}
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Expert Comment

by:BBK_
ID: 17165415
If you want to retain the selected directory name only till the application close, then better keep the value in a static variable,
If you want to keep this every time application opens, then better approch is to store the value in registry than in any XML or text file
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Expert Comment

by:dreckgos
ID: 17165856
I think you want to find out how to set the dialog programmaticly to a specified path, am I right?

Just before showing the dialog, set the dialog.filename property to your desired directory, like this:

dialog.FileName=@"C:\";
the "@" specifies not to interpret the \ as an escape sequence.

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LVL 29

Expert Comment

by:anarki_jimbel
ID: 17172328
2 dreckgos

"then better approch is to store the value in registry than in any XML or text file"
No doubts. Give an example of code. Ramesh asked for an easy solution :)

2 Ramesh
If you want to save in the registry you may have a look at http://www.knowdotnet.com/articles/registrywrapper.html
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Expert Comment

by:dreckgos
ID: 17173645
anarki, I think you got the names wrong....
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Expert Comment

by:dreckgos
ID: 17173674
anarki, I think you got the names wrong....

 Dont forget Ramesh... save the directory in any way you want and then set the filename or filepath property!
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Expert Comment

by:anarki_jimbel
ID: 17179979
My apologies, dreckgos!

The message was to BBK.
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