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Re: DataGrid Sorting

jazzle14-Mar-04 9:52

14-Mar-04 9:52

I created an XSD using the built-in in Vis Studio, edited it to use doubles instead of strings, but it still doesn't correct the problem, and I really can't see why.

any ideas anyone?

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Re: DataGrid Sorting

Mazdak14-Mar-04 9:57

14-Mar-04 9:57

You can post a new Message to get more help and be more spcific about how to do it or what is your code.

Mazy

"A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope

Re: DataGrid Sorting

jazzle14-Mar-04 10:07

14-Mar-04 10:07

will do, thanks

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vatavua13-Mar-04 3:21

13-Mar-04 3:21

How i can make a Partiture with musical syntax in word 2003 using C#

Andrei

Dave Kreskowiak13-Mar-04 4:26

Dave Kreskowiak

13-Mar-04 4:26

I take it your talking about writing sheet music in Word 2003?

RageInTheMachine9532

Corinna John13-Mar-04 8:18

13-Mar-04 8:18

There are a couple of musical fonts, but you cannot combine the symbols in word 2003, because word won't write multiple symbols across each other on specific positions.

I suppose you use a musical symbols font to write lines, notes etc. on a Bitmap, and don't use word at all.

Render child controls into memory dc

Mathew Hall13-Mar-04 2:18

13-Mar-04 2:18

Any ideas? I can sort of do it at the moment but they all render themselves on top of each other at (0, 0) instead of their correct locations.

"I think I speak on behalf of everyone here when I say huh?" - Buffy

Bit to Byte and base type size in C#

Tristan Rhodes13-Mar-04 1:25

13-Mar-04 1:25

I'm trying to figure out the size of base types in bytes so that i can use the FieldOffset attribute properly. However, i'm seeing contradictory information.

If a byte is 8 bits, then a 64 bit integer (ulong) would take up 8 bytes in memory. So, i would assume that:

[FieldOffset(0)]<br />
ulong value1;<br />
[FieldOffset(8)]<br />
ulong value2;

would be the correct way of declaring this, however, in the FieldOffset documentation, they are declared as follows:

[StructLayout(LayoutKind.Explicit)]<br />
public class SYSTEM_INFO<br />
{<br />
[FieldOffset(0)] public ulong OemId;<br />
[FieldOffset(4)] public ulong PageSize;<br />
[FieldOffset(16)] public ulong ActiveProcessorMask;<br />
[FieldOffset(20)] public ulong NumberOfProcessors;<br />
[FieldOffset(24)] public ulong ProcessorType;<br />
}

these long values are using 4 bytes, which is a 32 bit memory block. Won't they over lap and cause the program to overlap, or behave weird?

Cheers

Cata

Re: Bit to Byte and base type size in C#

leppie13-Mar-04 3:06

13-Mar-04 3:06

ulong / 2 = uint Smile | :)

Smile | :)

Hint look at the proper class names Smile | :)

Smile | :)

^{top secret}

Re: Bit to Byte and base type size in C#

Tristan Rhodes13-Mar-04 4:08

13-Mar-04 4:08

I'm still confused. How does that tie in with the size? Why declare a ulong for a uint sized memory block?

I was looking at these pages:

http://www.developerfusion.com/show/4392/3/

http://authors.aspalliance.com/aspxtreme/aspnet/types/basedatatypestable.aspx

Just trying to put 2 and 2 together and get 4 bits.

Cata

Re: Bit to Byte and base type size in C#

leppie13-Mar-04 6:50

13-Mar-04 6:50

Because ULONG in C is 32 bits.

^{top secret}

Re: Bit to Byte and base type size in C#

Tristan Rhodes14-Mar-04 0:17

14-Mar-04 0:17

Hmmm, i can see that declaring ulong in C# in a 4 field offset would not be a problem, providing the value never exceeds the max / min of integer. But why declare it as ulong in C# in the first place when it would be better handled as an int?

Otherwise, if C# forwards a value greater than max of int, it will crash the com component because of overlap?

Cata

Re: Bit to Byte and base type size in C#

leppie14-Mar-04 5:26

14-Mar-04 5:26

Thats why u should be using uint instead, not ulong. The C function expects 32bits, thats all that matters. On the C# side u just need to know whether the value is signed or unsigned.

^{top secret}

Re: Bit to Byte and base type size in C#

Tristan Rhodes14-Mar-04 9:55

14-Mar-04 9:55

So how does C handle 64 bit integers? uVeryBloodyLong? Wink | ;)

Wink | ;)

Re: Bit to Byte and base type size in C#

leppie14-Mar-04 11:22

14-Mar-04 11:22

either with long long or unsigned long long

^{top secret}

I need help with drag and drop

cristiansje12-Mar-04 22:09

12-Mar-04 22:09

i want to create a graphical interface in wich i have a treeview
i want to drag a node from a treeview in a listview (like in windows explorer) but i want to put, at the mouse position in the list view only a picture (icon)

how cant i do this??

Ps: i'am new in windows form programing

Re: I need help with drag and drop

John Fisher13-Mar-04 4:17

13-Mar-04 4:17

Here are the basics.

1) Turn AllowDrop on in the list view. Then handle the DragEnter, and DragDrop events at minimum. (DragOver is useful if you need to scroll the view while dragging.)

2) Handle the MouseDown, MouseMove, and MouseUp events on the treeview. If they move the mouse while the button is down, create the desired information and send it into the DoDragDrop method.

3) Any data can be dragged, and any data can be accepted or rejected by the control the mouse is dragging over.

4) You can insert anything you'd like after accepting a drop. There is no requirement that you insert anything into the list that even remotely resembles the item that was dropped. (In fact, you don't have to insert anything, even.)

5) Look around at the many different articles here on CodeProject for information on how to deal with tree views, and list views.

John

"You said a whole sentence with no words in it, and I understood you!" -- my wife as she cries about slowly becoming a geek.

Re: I need help with drag and drop

cristiansje14-Mar-04 21:34

14-Mar-04 21:34

if you'd give an example it would be perfect

api documentation

tonaxxlss12-Mar-04 18:52

tonaxxlss

12-Mar-04 18:52

i wanna to found some thing or tool to see all the function found in the win api dll files
how to do that i wanna a full documentation for all this functions and the use of each one !
can i found or make some thing like that ????????

Re: api documentation

Dave Kreskowiak13-Mar-04 2:37

Dave Kreskowiak

13-Mar-04 2:37

tonaxxlss wrote:
can i found or make some thing like that ????????

You can find all the documentation on the Microsoft Developer Network at http://msdn.microsoft.com[^].

If you relaly want to re-write all the documentation yourself, you'll spend about the next 10 years doing it, but your research will still start on MSDN.

RageInTheMachine9532

Re: api documentation

Nick Parker13-Mar-04 10:51

13-Mar-04 10:51

Dave Kreskowiak wrote:
If you relaly want to re-write all the documentation yourself, you'll spend about the next 10 years doing it, but your research will still start on MSDN.

Sheesh, by the time he finished re-writing the documentation it will have changed dramatically.

- Nick Parker
My Blog

Re: api documentation

Prakash Nadar14-Mar-04 1:12

14-Mar-04 1:12

Nick Parker wrote:
documentation it will have changed dramatically.

the documentation would be absolute and he would have to start all over again with the latest technology.

MSN Messenger.
prakashnadar@msn.com

how to change datalist's bind fied by codebehind code?

BigGirlBigEyes12-Mar-04 17:04

12-Mar-04 17:04

Generally,we can control datalist's display field by databinding by html,such as <%# Container.DataItem("Title") %>
Now i have a problem,I want to change this bind field by my option in codebehind file,such as i want to display Title+Digest or Column+Title
so who can tell me how to make this done?
Thanks in advance!
I'm terribly troubled by this problem and looking forward to your reply.

DataGrid to DataSet to XML

jazzle12-Mar-04 16:04

12-Mar-04 16:04

Hi,
simple question I expect, it's just so hard to find out how to do things...

I have a WinForm with a DataGrid which gets its data from an XML file. I would like the user to be able to edit the data and save it with a button click.
(straightforward huh?)

Any help anyone?

Thanks, J

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Re: DataGrid to DataSet to XML

Mike Ellison12-Mar-04 19:07

12-Mar-04 19:07

Hi, J. Does this work for you?

void SaveDataGrid(DataGrid dg, string sFile)
{
  DataSet ds = dg.DataSource;
  ds.WriteXml(sFile);
}

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