Text editor problem

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Hi I'm designing my own text editor but i'm having bit of a problem.

what I'm trying to do is when you double click on the txt file my program opens up but does not display any text.

I have search the web but all I found is not complete code that I can use in my text editor.

please help.
regards

Posted 23-Dec-12 8:44am

schalk1984

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Jibesh 23-Dec-12 14:57pm

without looking at your code we cannot provide you a better or any solution. the information you posted doesnt reveal anything to us. try debugging your code where you load the file and see what's happening there and post the code what is not working.

schalk1984 23-Dec-12 15:11pm

the problem is that if i double click on any txt file it only shows a blank textbox.
i don't have any code that makes sense to me that opens a txt in my textbox.

and sorry if you can tell me how to debug using a text file first please?

Jibesh 23-Dec-12 15:17pm

Read this Article on how to debug. http://www.codeproject.com/Articles/79508/Mastering-Debugging-in-Visual-Studio-2010-A-Beginn

You said you double click on a file and your application open up. it doesnt mean that you done with your application. You need to understand the basics and the process involved in a text editor like load file from the disk and display the file content and later save the file contents to the disk etc etc. so try to search on the net with these information and its not that big task. you can do it and you can find lot of sample code for editors by googling.

schalk1984 23-Dec-12 15:26pm

my program can open,save, print a file with no problem that is only if my program starts up first and then open a file - no problem here.
but when i double click it does not display any text.

and i did check most sample but none has this code in them

schalk1984 23-Dec-12 15:16pm

http://www.c-sharpcorner.com/blogs/3308/double-click-on-your-fileextension-open-it-with-your-exe.aspx

is the closes i have found but it gives me a few errors
Error 1 'TXTEditor.Form1' does not contain a constructor that takes 0

what can i do to fix this

Jibesh 23-Dec-12 15:30pm

Check my solution

schalk1984 23-Dec-12 15:53pm

now its giving me a error when i test it "object reference not set to an instance of an object."

it also create a new instance of a form with no objects

schalk1984 23-Dec-12 15:37pm

now its giving me a error when i test it "object reference not set to an instance of an object."

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Jibesh · Answer 1 · 2012-12-23T09:29:00

Solution 2

Define two constructor in your TXTEditor class

eg:

C#

//which is generated by default
public TXTEditor()
{
InitializeComponent();
}

//new Contructor
public TXTEditor(string fileName)
{
//your code goes here
}

Posted 23-Dec-12 9:29am

Jibesh

schalk1984 · Answer 2 · 2012-12-23T10:07:00

Thank you helped solve the problem Jibesh

C#

public Form1()
       {
           InitializeComponent();
       }
       public Form1(string filename)
       {
           InitializeComponent();

           if (filename != null)
           {
               try
               {
                   //textBox1.LoadFile(filename); remove this line
                   StreamReader reader = new StreamReader(filename);
                   char[] data = new char[filename.Length];
                   reader.ReadBlock(data, 0, (int)filename.Length);
                   textBox1.Text = new string(data);
                   reader.Close();// and add these lines
               }
               catch (Exception ex)
               {
                   MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
               }
           }
}