Re: Weird behaviour - C# Discussion Boards

22-Mar-09 23:23

I have the following snippets in an MDI form and a child

MDI

private void mnuFileNew_Click(object sender, EventArgs e)
{
    //create a new Item form
    frmAddItem addItem = new frmAddItem();

    addItem.MdiParent = this;
    addItem.ShowInTaskbar = false;
    addItem.Show();
}

Child

private void frmAddItem_Load(object sender, EventArgs e)
{
    //GetEnumerations
    GetEnumerations();
    //Bind the Combos
    BindCombos();

    //set the length of the barcode textbox
    int maxLength = int.Parse(RegistryHelper.ReadSettingFromRegistry(@"Inventory\Barcode\C39\Length"));
    txtBarcode.MaxLength = maxLength;
}

Now, the funny part is that the moment the debugger reaches the

GetEnumerations()

in the child's load section, the code just exits the event handler back to the parent. Anyone have a clue why? I'll add to the plot and say that the last line references a dll that reads a value from the registry. Works like a swiss watch but the GetEnumerations method which reads from the DB doesn't seem to function.

DaveyM6922-Mar-09 23:59

DaveyM69

22-Mar-09 23:59

Strange

I assume you've set a breakpoint at BindCombos(); and it's never reached?

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)

Mustafa Ismail Mustafa23-Mar-09 0:28

23-Mar-09 0:28

Yep. I've tried restarting the IDE and the computer but still the same.

DaveyM6923-Mar-09 0:53

DaveyM69

23-Mar-09 0:53

The problem has to lie in the GetEnumerations method - though I can't imagine what could be in it that would cause the behaviour you're experiencing!

I'd put beakpoints all over that method to find out what's going on.

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)

Mustafa Ismail Mustafa23-Mar-09 4:32

23-Mar-09 4:32

See, that's the thing. I've already done that. Its not even accessing the method. It just reverts back to the MDI form's code. It just exits the Child's load event handler. The form displays fine and function alright (I checked other stuff in the form and it works perfectly fine).

Its driving me insane.

And I'm really sorry for the late reply but the electricity was out for a few hours.

DaveyM6923-Mar-09 5:06

DaveyM69

23-Mar-09 5:06

Are you absolutely sure that the handler is being called at all?
Maybe you (or the designer) have deleted the line that adds the handler method to the delegate's invocation list, or a different method is in there?

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)

Mustafa Ismail Mustafa23-Mar-09 5:25

23-Mar-09 5:25

OK. I went a few levels back and caught the very basic exception being thrown (it turns out that there is an exception being thrown!)

I'm getting a:

{System.TypeLoadException: Could not load type 'RCH.BL.Inventory.ItemCategory' from assembly 'BL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
   at RCH.Inventory.Forms.frmAddItem.GetEnumerations()
   at RCH.Inventory.Forms.frmAddItem.frmAddItem_Load(Object sender, EventArgs e) in C:\Data\Work\Asclepius\trunk\src\Inventory\Forms\frmAddItem.cs:line 115}

Now why would this happen?

Thanks to JSOP for the tip! I'm posting this to him as well

#realJSOP23-Mar-09 2:42

23-Mar-09 2:42

Add a try/catch block around the call to GetEnumerations.

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Mustafa Ismail Mustafa23-Mar-09 5:26

23-Mar-09 5:26

OK. I went a few levels back and caught the very basic exception being thrown (it turns out that there is an exception being thrown!)

I'm getting a:

{System.TypeLoadException: Could not load type 'RCH.BL.Inventory.ItemCategory' from assembly 'BL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
   at RCH.Inventory.Forms.frmAddItem.GetEnumerations()
   at RCH.Inventory.Forms.frmAddItem.frmAddItem_Load(Object sender, EventArgs e) in C:\Data\Work\Asclepius\trunk\src\Inventory\Forms\frmAddItem.cs:line 115}

Now why would this happen?

Thanks to your tip, I'm reminded how to find a bleeding error. Thanks.

#realJSOP23-Mar-09 9:03

23-Mar-09 9:03

Maybe you neglected to do a build all and then update all the assembly binaries.

Mustafa Ismail Mustafa23-Mar-09 9:27

How to find multiple occurrence in a string.

23-Mar-09 9:27

I've done that at least a dozen times since I've found out the error.

As is, I'm at folks now so I'm working from my laptop and everything is fine on this machine. When I get back home to my proper dev box I'm going to try that again and see what the heck is going on.

Thanks for everything John

CodingLover22-Mar-09 23:22

CodingLover

22-Mar-09 23:22

Hi all,

I want to find multiple occurrence of a string.

I used string.Contains() method and it returns only the first occurrence. I want to find how many occurrence and add some characters in that index. How can I do that?

Thanks Smile | :)

I appreciate your help all the time...
CodingLover Smile | :)

Spunky Coder22-Mar-09 23:34

Spunky Coder

22-Mar-09 23:34

Contains() internally calls IndexOf() method...For finding the multiple occurrences use IndexOf() and loop through the entire string.

"Don't worry if it doesn't work right. If everything did, you'd be out of a job." (Mosher's Law of Software Engineering)

Luc Pattyn23-Mar-09 1:28

Luc Pattyn

23-Mar-09 1:28

or have a look at Regex class. It may be more complex, it offers lots of functionality.

Smile | :)

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#realJSOP23-Mar-09 2:52

23-Mar-09 2:52

Try this:

string text = "one two three one oneone, someone for";
string wordToFind = "one";
int wordCount = 0;
int pos = 0;
while (pos >= 0)
{
	pos = text.IndexOf(wordToFind);
	if (pos >= 0)
	{
		wordCount++;
		text = text.Substring(pos + wordToFind.Length);
	}
}

The example above should result in a wordCount of 5.

#realJSOP23-Mar-09 3:17