Solved

How do I pass strings between voids ?

Posted on 2009-03-31
4
193 Views
Last Modified: 2013-12-17
I have a hard time understanding the whole passing strings thing in C#.
I thought that simply by putting example:
public string IMAGELOC;
at the begining of code made it Public to everything everywhere in that .cs file.
But that seems not to be the case.
I have tried to read some passing strings tutorials but I still have hard time understanding them.

Anyone care to show me how to get my IMAGELOC string from 1 place to another and maybe nlighten me a simple explanation ?

Thanks !

public void ListBox1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
              string IMAGELOC = "mypath to file";
        }
 
public void pictureBox2_Click(object sender, EventArgs e)
        {
            Form2 newForm2 = new Form2();
            newForm2.ShowDialog();
        }
public class Form2 : Form
        {
            private PictureBox picbox2 = new PictureBox();
 
 
            public Form2()
            {
                MessageBox.Show();
                AutoSize = true;
                AutoSizeMode = AutoSizeMode.GrowAndShrink;
                picbox2.SizeMode = PictureBoxSizeMode.AutoSize;
                picbox2.ImageLocation = IMAGELOC
                this.Controls.Add(picbox2);
            }
 
        }

Open in new window

0
Comment
Question by:Smyken
  • 2
  • 2
4 Comments
 
LVL 32

Expert Comment

by:Daniel Wilson
ID: 24035358
I thought that simply by putting example:
public string IMAGELOC;
at the begining of code made it Public to everything everywhere in that .cs file.
Actually, making it public makes it available to anything that uses the class, as well as available to anything in the class.  If you just want it available within the class, use private.

It looks like you're wanting to pass the string between classes ... this should do it for you:

private String IMAGELOC;
 
public void ListBox1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
              IMAGELOC = "mypath to file";
        }
 
public void pictureBox2_Click(object sender, EventArgs e)
        {
            Form2 newForm2 = new Form2();
            newForm2.SetImageLoc(IMAGELOC);
            newForm2.ShowDialog();
        }
public class Form2 : Form
        {
            private PictureBox picbox2 = new PictureBox();
 
 
            public Form2()
            {
                MessageBox.Show();
                AutoSize = true;
                AutoSizeMode = AutoSizeMode.GrowAndShrink;
                picbox2.SizeMode = PictureBoxSizeMode.AutoSize;
                
                this.Controls.Add(picbox2);
            }
 
            public SetImageLoc(String loc){
               picbox2.ImageLocation = loc;
            } 
                 
        }

Open in new window

0
 
LVL 1

Author Comment

by:Smyken
ID: 24035414
hmm

tried your solution and got this:

Error      1      Method must have a return type

pointing at :

public SetImageLoc(String loc){
               picbox2.ImageLocation = loc;
            }
0
 
LVL 32

Accepted Solution

by:
Daniel Wilson earned 300 total points
ID: 24035451
sorry, omitted the void return type.

public void SetImageLoc(String loc){
               picbox2.ImageLocation = loc;
            }

Open in new window

0
 
LVL 1

Author Comment

by:Smyken
ID: 24035583
Worked like a charm.

Thanks friend !
0

Featured Post

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The object model of .Net can be overwhelming at times – so overwhelming that quite trivial tasks often take hours of research. In this case, the task at hand was to populate the datagrid from SQL Server database in Visual Studio 2008 Windows applica…
This article describes relatively difficult and non-obvious issues that are likely to arise when creating COM class in Visual Studio and deploying it by professional MSI-authoring tools. It is assumed that the reader is already familiar with the cla…
This tutorial gives a high-level tour of the interface of Marketo (a marketing automation tool to help businesses track and engage prospective customers and drive them to purchase). You will see the main areas including Marketing Activities, Design …
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.

810 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question