C# opening the file

Question

Hi all I'm using Visual Studio 2003 and am creating simple program. I need to open a file using openFileDialog I dragged the open file dialog and I need to know how to use it to open. this is what I've got [code] DialogResult buttonClicked = openFileDialog1.ShowDialog(); if (buttonClicked.Equals(DialogResult.OK)) { openFileDialog1.OpenFile(); } if (buttonClicked.Equals(DialogResult.Cancel)) { openFileDialog1.Reset(); } [/code] I only know that I use this: openFileDialog1.ShowDialog() and openFileDialog1.OpenFile() but even though I write OpenFile into the code it does nothing do I have to use some streaming or something? how do I force the program to open the file? it's a normal windows file with *.udl extension thank you for your help

Mykonine · Answer

If you're just trying to read it as a text file the StreamReader is fine. It uses a FileStream. To write to the file use a StreamWriter.

vitek · Answer

the file is opened with Microsoft Data Access Ole DB Core services I found this but it doesn't work >File.OpenFile C:\My Projects\project1\Test1.css

vitek · Answer

I'm using the stream reader in following fashion: using (StreamReader srUdl = new StreamReader(link.udl)) { String line; line = srUdl.ReadToEnd(); label1.Text= line; } I found out that I don't need the open File Dialog because I can just have the file in the project and edit it there. The problem is though that I have to open and edit it and I don't know how. The file .uld consists of three text lines: [oledb] ; Everything after this line is an OLE DB initstring Provider=SQLOLEDB.1;Password=host;Persist Security Info=True;User ID=host;Initial Catalog=ioffice;Data Source=ecoms.friends.cz2433 but when you open it in windows it will open you a cool editor which I need... I don't want to create the same thing just for my program. so I need to open the file (editing it in the window mode would be no problem afterwards) so if I was able to open the file just like I open it with double clicking in windows that would be really good. thank you for suggestions and replies

vitek · Answer

Mykonian: You need to attach a FileStream to the file and read the file through the FileStream (or one of its subclasses). and how should I do that? do I somehow attach it to the file?

vitek · Answer

Thank you for the help it's useful. the file is *.udl file which is kind of a Data Link file that establishes connection. it contains connection string for sql connection that I'm using. I'll try to use the stream reader to edit it. A different problem will be to save it. I hope I can work that out. thank you again for your help vitek

Mykonine · Answer

You need to attach a FileStream to the file and read the file through the FileStream (or one of its subclasses).

james · Answer

Your code works just fine to do what you're asking of it you have the file open next you have to do something with the file (i.e. read it in). If it is a text file you can use the TextReader object or some other StreamReader object to read it in. The MSDN has some good help files and samples on reading files... here is one that may be helpful http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemiotextreaderclasstopic.asp -James