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Learning to program 
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finlay666
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Post Re: Learning to program
EddArmitage wrote:
Sorry, I wasn't being serious. This probably wasn't the thread for it though.


Not really the place ;)

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Mon Jun 07, 2010 1:20 am
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james016
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Post Re: Learning to program
EddArmitage wrote:
Having seen it here, it would appear to be something like
Code:
String strVersion = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();


to retrieve the version number as a string.

How would I use that in the code? Pasting it after Version Number gives errors so I am missing something.
What I have at the moment is this:

Code:
 private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
        {

            MessageBox.Show("Made by james016 \r\nVersion Number:");
        }


Many thanks.

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Mon Jun 07, 2010 8:31 am
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forquare1
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Post Re: Learning to program
james016 wrote:
EddArmitage wrote:
Having seen it here, it would appear to be something like
Code:
String strVersion = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();


to retrieve the version number as a string.

How would I use that in the code? Pasting it after Version Number gives errors so I am missing something.
What I have at the moment is this:

Code:
 private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
        {

            MessageBox.Show("Made by james016 \r\nVersion Number:");
        }


Many thanks.


I would have thought:
Code:
 private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
        {
            String strVersion = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();
            MessageBox.Show("Made by james016 \r\nVersion Number: " + strVersion);
        }
Mon Jun 07, 2010 9:54 am
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james016
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Post Re: Learning to program
Thank you Ben

That worked :D

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Mon Jun 07, 2010 10:23 am
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forquare1
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Post Re: Learning to program
james016 wrote:
Thank you Ben

That worked :D


No problem, I've not done C# before, but after having a look, this is slightly more correct:

Code:
 private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
        {
            StringBuilder strVersion = new StringBuilder("Made by james016 \r\nVersion Number: ");
            MyStringBuilder.Append(System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString());
            MessageBox.Show(strVersion);
        }


Strings in both Java and C# are immutable (i.e. they can't be changed). In the snippet I have you before, the code had to take two Strings and stick them together to create a third String. This is generally bad practise as you're using twice as much memory.
The StringBuilder I've used above has the same effect, but enlarges the amount of memory it uses to accommodate the new text.

EDIT: Sorry James, accidentally posted an opening square bracket at the end there. Also, you may need to include System.Text.StringBuilder
I can't test it as I don't have a C# editor/compiler here...


Last edited by forquare1 on Mon Jun 07, 2010 2:58 pm, edited 1 time in total.
Mon Jun 07, 2010 10:44 am
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james016
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Post Re: Learning to program
Unless I am missing something, copying and pasting that code gave me some errors.

On the plus side I managed to make a .msi file for installation. :)

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Mon Jun 07, 2010 1:09 pm
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EddArmitage
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Post Re: Learning to program
james016 wrote:
Unless I am missing something, copying and pasting that code gave me some errors.

I would guess you've copied the opening square bracket after the closing curly brace?

Do you understand what the code is doing/how it works, and how/why using a stringbuilder is better than combining two strings?

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Mon Jun 07, 2010 2:07 pm
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finlay666
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Post Re: Learning to program
forquare1 wrote:
james016 wrote:
Thank you Ben

That worked :D


No problem, I've not done C# before, but after having a look, this is slightly more correct:

Code:
 private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
        {
            StringBuilder strVersion = new StringBuilder("Made by james016 \r\nVersion Number: ");
            MyStringBuilder.Append(System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString());
            MessageBox.Show(strVersion);
        }


Strings in both Java and C# are immutable (i.e. they can't be changed). In the snippet I have you before, the code had to take two Strings and stick them together to create a third String. This is generally bad practise as you're using twice as much memory.
The StringBuilder I've used above has the same effect, but enlarges the amount of memory it uses to accommodate the new text.

EDIT: Sorry James, accidentally posted an opening square bracket at the end there. Also, you may need to include System.Text.StringBuilder
I can't test it as I don't have a C# editor/compiler here...


Simpler way I would suggest is:
Code:
 private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
        {
            MessageBox.Show(String.Format("Made by james016 {0}Version Number: {1}",
                                     Environment.NewLine,
                                     System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString()));
        }


might need to change String to string but that simplifies it

instead or \r\n it's better practice to use Environment.Newline, different systems interpret the new line differently and can cause formatting issues, Environment.Newline is a target dependent variable

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Mon Jun 07, 2010 5:21 pm
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james016
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Post Re: Learning to program
Thank you for the tips. I will look at these tomorrow at work.

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Mon Jun 07, 2010 7:02 pm
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