datagridview cell type - C# Discussion Boards

Re: Create a Sitemap User Control by using Recursion

OriginalGriff5-Jan-11 2:51

OriginalGriff

5-Jan-11 2:51

Consider yourself corrected! Laugh | :laugh:

private int Factorial (int n)
   {
   if (n < 0)
      {
      throw new ArgumentException("Factorial not defined for negative numbers");
      }
   if (n == 0)
      {
      return 1;  // Special case : 0! is defined to be one
      }
   return n * Factorial(n - 1);
   }

If you call it with 3:

Factorial(3)
Calls Factorial(3 - 1): Factorial(2)
Calls Factorial(2 - 1): Factorial(1)
Calls Factorial(1 - 1): Factorial(0)
Which returns 1.

You can add another special case @ either 2 or 1, but it looks clumsy for this example. Let's be honest, I wouldn't implement factorial this way in the real world anyway; it is just the classic example and easy to understand what is going on.

Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.

Re: Create a Sitemap User Control by using Recursion

JacquesDP5-Jan-11 2:57

JacquesDP

5-Jan-11 2:57

My bad, I stand corrected Laugh | :laugh:

No matter how long he who laughs last laughs, he who laughs first has a head start!

Re: Create a Sitemap User Control by using Recursion

Abhinav S4-Jan-11 20:51

Abhinav S

4-Jan-11 20:51

You should go through the bottom section of this[^] once before asking a question on a forum.

The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.

My latest tip/trick

Using rdpsign.exe with c sharp and where to get it

turbosupramk34-Jan-11 12:52

turbosupramk3

4-Jan-11 12:52

Has anyone used rdpsign.exe with c#? Any compatibility issues with .net 3.0 or 3.5?

Any idea where I can download it? Or does anyone have a copy they can attach to the forum (as long as there is no TOS being violated)?

I have the 2008 enterprise iso file, but I do not find it inside of the iso?

Thanks!

Re: Using rdpsign.exe with c sharp and where to get it

Dave Kreskowiak4-Jan-11 16:15

Dave Kreskowiak

4-Jan-11 16:15

There's no download for it as far as I can tell. It comes with Windows Server 2008 and maybe 2003 also. I don't have either here to verify that. You may have to install Terminal Services on the server to get it.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: Using rdpsign.exe with c sharp and where to get it [modified]

turbosupramk34-Jan-11 16:41

turbosupramk3

4-Jan-11 16:41

Hi,

Thanks for the reply Dave, I need it for server 2k3 and did not find it on my servers. I found it on my win7 disk so I decided to put it online for others, since finding this was so difficult.

http://www.filedropper.com/rdpsign[^]

I can provide hashes for this in case anyone wants, but rest assured this is straight from my win7 ultimate disc, which is 32 bit.

My only problem now is that I can't test it because I only have xp installed at home ... ugh! And I don't feel like installing win7 tonight.

modified on Tuesday, January 4, 2011 10:47 PM

Create a new additional function to use with Cristal Report (VS2005)

martinergb4-Jan-11 7:02

martinergb

4-Jan-11 7:02

Hi, I created a new additional function using C# to use with Cristal Report. I followed the instruction from MSDN: http://msdn.microsoft.com/en-us/library/ms227603%28v=vs.80%29.aspx[^]
But, after I built and registered the dll, I cannot find the Visual Basic UFL's(u2lcomm.dll) in the additional function node.

datagridview cell type

csrss4-Jan-11 6:23

csrss

4-Jan-11 6:23

The question is:
How to get current cell type? i got a loop like this:

foreach (DataGridViewRow row in dgv.Rows)
{
foreach (DataGridViewCell cell in row.Cells)
{
/*and here i got like:*/
String HeaderName = cell.OwningColumn.HeaderText;
/*and now i need to get a cell type so i know it is for example combobox cell and not a button cell or checkbox cell?*/
}
}

So the question is, how do i get a cell type, for example, is it combobox cell type, or textbox cell type, or button cell type, or checkbox cell type? Or, in other words, do my current processing cell belongs to a column of type DataGridViewComboBoxColumn or DataGridVieTextBoxColumn, or DataGridViewButtonColumn?
thanks

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Re: datagridview cell type

Dave Kreskowiak4-Jan-11 6:40

Dave Kreskowiak

4-Jan-11 6:40

Try getting the type of the cell.OwningColumn and see what you get. Something like:

switch typeof(cell.OwningColumn)

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: datagridview cell type

csrss4-Jan-11 7:02

csrss

4-Jan-11 7:02

Alright, thanks for the hint.
Actually, it was pretty much straightforward:

if(cell.OwningColumn is DataGridViewButtonColumn) then...

thanks

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Re: datagridview cell type

Luc Pattyn4-Jan-11 7:01

Luc Pattyn

4-Jan-11 7:01

if you're interested in one or two types only, you could use the is keyword to your advantage, as in:

if (cell.OwningColumn is DataGridViewCheckBoxColumn) { ... }
if (cell is DataGridViewCheckBoxCell) { ... }

Luc Pattyn [Forum Guidelines] [My Articles] [My CP bug tracking] Nil Volentibus Arduum

Season's Greetings to all CPians.

Re: datagridview cell type

csrss4-Jan-11 7:04

csrss

4-Jan-11 7:04

Yup, thats it, just figured it out second ago, but thanks Smile | :)

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Debug.Trace - wish it to act like ASSERT in MFC

bob169724-Jan-11 6:05

bob16972

4-Jan-11 6:05

Is there an easy way to utilize some diagnostic class/method in a manner similar to the MFC ASSERT macro in that I will be taken to the location of the assertion failure in the code while debugging.

This would be more helpful/quicker than trying to embed hints on the location in the Debug.Assert message string. I checked my books and the MSDN documentation but I have not been lucky enough to trip over any alternatives yet.

Re: Debug.Trace - wish it to act like ASSERT in MFC

Dave Kreskowiak4-Jan-11 6:36

Dave Kreskowiak

4-Jan-11 6:36

The closest you're going to get is to check for the condition using a normal If statement, then call Debugger.Break.

Read up on this page[^] for some ideas to implement what you want.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: Debug.Trace - wish it to act like ASSERT in MFC

bob169724-Jan-11 6:42

bob16972

4-Jan-11 6:42

O'Well. I guess the call stack details will have to do.

thanks for the response and link.

Re: Debug.Trace - wish it to act like ASSERT in MFC

Rob Philpott4-Jan-11 6:46

Rob Philpott

4-Jan-11 6:46

That's a good question. It doesn't seem to be a standard practice in .NET unlike in C++, or not that I've seen anyway, and I think that's probably to do with the difference between debug and release not being as clear cut in .NET than in C++. Not even sure if conditional compilation exists.

As suggested you can Debugger.Break, but that's ugly, and if you were to wrap it up in a little function then it would break in that rather than where you want (unless you could inline it out somehow??) The other alternative is just don't do it, just do the check and throw an exception if the check fails - that's more what you see - people tend not to assert the arguments to a function are correct, but throw an ArgumentException instead if they're wrong as an example.

Regards,
Rob Philpott.

Re: Debug.Trace - wish it to act like ASSERT in MFC

bob169724-Jan-11 7:10

bob16972

4-Jan-11 7:10

Most of my asserts are more usage based (for changes that might get tossed in years down the road after I've forgotten how things work) but I still got into the habit of inserting them within private and protected areas of the class and putting runtime checks only at the public entry points for performance reasons. Basically following the MFC source code way of doing things.

I agree with you that the Debugger.Break isn't compact enough to tuck into the code without sticking out in an ugly way so I'll probably just adapt and use the Debug.Assert or Trace.Assert.

thanks for the response.

Re: Debug.Trace - wish it to act like ASSERT in MFC

jschell4-Jan-11 8:07

jschell

4-Jan-11 8:07

Rob Philpott wrote:
unless you could inline it out somehow??)

The C++ compiler handles macros as a pre-compiler process. And it should be one that is controllable from the compiler.

Thus with some work one can use the C++ compiler as a macro compiler on the front end of any language. One would start with a file named something like 'Test.csx' run it through the compiler to create 'Test.cs' (in the project tree) as a pre-build step.

At least in the past there were also stand alone macro processors.

Re: Debug.Trace - wish it to act like ASSERT in MFC

#realJSOP4-Jan-11 6:47

#realJSOP

4-Jan-11 6:47

Debug.Trace isn't even close to being the same thing. What you really want is Debug.Assert() in the System.Diagnostics namespace.

".45 ACP - because shooting twice is just silly" - JSOP, 2010
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
"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

Re: Debug.Trace - wish it to act like ASSERT in MFC

bob169724-Jan-11 7:01

bob16972

4-Jan-11 7:01

Oops. you caught me. That's what I meant to type. Blush | :O

Drawlines on different levels

AlexB474-Jan-11 6:04

AlexB47

4-Jan-11 6:04

Hi,
sorry for my bud English.
I have to draw up an Forms.panel using a "Graphics" object (objPanel.CreateGraphics). I uploaded my design (graphic DrawLine) and I would "fizzle" because I run this graph by drawing a vertical line near the mouse pointer. Mine is a refresh problem because scrolling the mouse leave the previous vertical lines. I tried with "invalidate (rect)" but I do not redraw the chart below. Can you help me with an example? Is 'possible "to fizz" below the others drawlines and draw on a higher level without losing low level?

Alex

Re: Drawlines on different levels

Luc Pattyn4-Jan-11 6:21

Luc Pattyn

4-Jan-11 6:21