[Gamma Ray]

Well, yes, how do I do that?
I did search, and found answers like "Decimal.Parse(StringVariable" ...

This may be a bit different though...
I have a value in a TreeNode's tag, and I want to have a decimal variable with that number.

How do I do that?

I've tried different ways to convert, but always get error.

Thanks in advance,

This post has been edited by Gamma Ray: 14 April 2011 - 06:02 AM

[Sergio Tapia]

What code are you using?

The .Tag object is an Object and as such, you need to cast it to be able to use it properly.

Convert.ToDecimal(object);

For example:

Object myTag = new object();
myTag = 10.31;

var x = Convert.ToDecimal(myTag);
Console.WriteLine(x);

This post has been edited by Sergio Tapia: 13 April 2011 - 11:57 AM

[Gamma Ray]

I tried this:

		private void List_AfterSelect(object sender, TreeViewEventArgs e)
		{
			TreeNode theTag = List.SelectedNode.Tag;
                        Convert.ToDecimal(theTag);
		}

But the "List.SelectedNode.Tag" is underlined in red.

Edit:
I'll read through your update 1sec

This post has been edited by Gamma Ray: 13 April 2011 - 12:01 PM

[Sergio Tapia]

Change this:

private void List_AfterSelect(object sender, TreeViewEventArgs e)
{
	TreeNode theTag = List.SelectedNode.Tag;
                      Convert.ToDecimal(theTag);
}

To this:

private void List_AfterSelect(object sender, TreeViewEventArgs e)
{
    var theDecimal = List.SelectedNode.Tag;
    var convertedValue = Convert.ToDecimal(theDecimal);
}

The problem you were having is because you were trying to save .Tag (a decimal, right?) to a TreeNode object.

In the fixed code, you're getting the .Tag, then converting it.

[Gamma Ray]

Thanks, I'll try that

Edit:
Ok, I got this error when I clicked on the node with the tag:

Quote

Input string was not in a correct format.

I tried to fiddle around a bit, but didn't help

Edit 2:

		private void List_AfterSelect(object sender, TreeViewEventArgs e)
		{
			tInfo.Text = "" + List.SelectedNode.Tag + " x " + List.SelectedNode.ToolTipText;

			var theDecimal = List.SelectedNode.Tag;
			var convertedValue = Convert.ToDecimal(theDecimal);
			
			
		}

		private void bCal_Click(object sender, EventArgs e)
		{

	
			labCalc.Text = "" + Calculate(numAmount.Value, convertedValue);
		}

		decimal Calculate(decimal Am, decimal Pr)
		{
			

			return Am * Pr;
		}

		public decimal convertedValue { get; set; }

Here is the code I'm using at the moment.

(Sorry if I seem a bit incompetent )

This post has been edited by Gamma Ray: 13 April 2011 - 12:12 PM

[Sergio Tapia]

In the context of the posted code, what line is firing that error?

[Curtis Rutland]

Put a breakpoint in to see what the actual value trying to be converted to a decimal is. You're probably trying to convert something that won't convert.

[Gamma Ray]

First of all, the error is here:

var convertedValue = Convert.ToDecimal(theDecimal);

Breakpoint, idk what that is, sorry... lol...
By the way; the tag is "0.0078125m" and I also tried "0.0078125"

So I don't know

[Curtis Rutland]

Quote

Breakpoint, idk what that is, sorry... lol...

Are you not at a computer with access to the internet? When you don't know what something is, usually a quick google will solve that right up.

Anyway, here's a tutorial on debugging. Learn it, love it, live it.

http://www.dreaminco...6780-debugging/

With my testing, the second string will work, while the first will not. Make sure none of your tags actually have "m" in them.

[Gamma Ray]

Debugging xD

Thank you

I'll try to see what I can do.

[here.to.code]

Try this and see if its the result you're looking for... I'm not exactly positive what you're asking but given a sample data (node.tag) of 10.5m your result will give 10.5

Take note of what I did and you should be able to manipulate it for your own use
Enjoy!

  private void List_AfterSelect(object sender, TreeViewEventArgs e)
        {
            

            if (List.SelectedNode.Tag != null)
            {
                if (List.SelectedNode.Tag.ToString() != String.Empty)
                {
                    string temp = "";
                    char[] nums = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.' };
                    foreach (char c in List.SelectedNode.Tag.ToString())
                    {
                        foreach (char n in nums)
                        {
                            if (c == n)
                                temp += c;
                        }
                        
                    }
                    tInfo.Text = "" + temp + " x " + List.SelectedNode.ToolTipText;
                    var convertedValue = Convert.ToDecimal(temp);
                }
            }
        }

This post has been edited by here.to.code: 13 April 2011 - 01:52 PM

[Gamma Ray]

I'll +rep you anyway

Thanks for your reply, I'll try it now.

Edit:
I get same error as above...

Quote

Input string was not in a correct format.

var convertedValue = Convert.ToDecimal(temp);

P.S.:
I don't know if this is right, but I use

public decimal convertedValue { get; set; }

to not get the variable underlined. As I use it in another method.


Thank you, and again, sorry if I seem stupid, lol

This post has been edited by Gamma Ray: 13 April 2011 - 02:00 PM

[Curtis Rutland]

Again, you need to know exactly what is in temp at the time it's being evaluated to see what it is trying to convert.

Put in this line:

MessageBox.Show(temp);

Immediately before the one throwing the error, and tell us exactly what pops up.

If it throws an error on the message box line, replace temp with temp.ToString()

[Gamma Ray]

It says the value I have in tag...
Then when I press Ok the error appears.

} MessageBox.Show(temp);

				tInfo.Text = "" + temp + " x " + List.SelectedNode.ToolTipText;
				var convertedValue = Convert.ToDecimal(temp);
			}

Placed it there.

[Curtis Rutland]

Well, of course it does. I need to see that value to tell you why it's not working!