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So I have the current date in a string by doing this:
string date=DateTime.Now.ToShortDateString();
So on a single digit day/month it will show up without a leading zero. Like today for example:
1/10/2007
I was messing around with the format specifiers of toString but I cant figure out a way to get a leading zeros on single digit days. How can I do this short of some string spitting.
/\ |_ E X E GG
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Using the ToShortDateString is causing your problem. This call uses the Short date format specified in the "Regional and Language Options" control panel.
To have complete control over how the string is formatted, you would want to use the ToString method and pass in the format string. For your example, the call would look like this:
string date = DateTime.Now.ToString("MM'/'dd'/'yyyy");
-----------------------------
In just two days, tomorrow will be yesterday.
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OK, thanks I didn't know it was that flexable!
/\ |_ E X E GG
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No problem. Most of the ToString methods, particulary on the DateTime and native numeric data types (int, short, etc.), take some sort of format string.
Here is the MSDN page that will give you information on all of the different formatting options available for the different data types:
http://msdn2.microsoft.com/en-us/library/fbxft59x.aspx[^]
-----------------------------
In just two days, tomorrow will be yesterday.
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This is a repost as I didn't get a reponse to my last one  and I still can't get this thing to run through. Well I lie. It ran through fine once, but since then I've been getting this contextSwitchDeadlock issue, but I haven't modified the code!  
Anyone have any ideas?
/TH
<br />
Hi All,<br />
<br />
I'm slowing finding my way around C#.<br />
<br />
I have written an application that takes a directory, take each file in that directory and also each file in each subdirectory, and then trys to find any files with the same name<br />
<br />
(Trying to clear up all my duplicate photos )<br />
<br />
SO I have written the code, and checked it and checked it again, it does not get caught in an infinite loop.<br />
<br />
But when I F6 the app it comes up with a ContextSwitchDeadlock MDA issue.<br />
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My friend...
Even though I've never faced a contextSwitchDeadlock, but I think that googling[^] is a very healthy practice.
Regards ![Rose | [Rose]](https://codeproject.freetls.fastly.net/script/Forums/Images/rose.gif)
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Hi Nader,
I tried that. found something about setting it to "Full Trusted" which i tried, but that did not resolve it.
Thanks for the help though!
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Though I don't like that solution, but here is a link to something that may help. Click here[^].
PS.
If you are mulithreading, then getting this exceptions means that you've done something wrong, and ifnoring it isn't quite the best thing to do.
Regards
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LOL Great minds think a like 
Its not threading its quite procedural, so this should suffice.
I'll see if it blows up when I get it into production. Then it might be back to the drawing board.
/TH
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There is a program calling a C++ dll named "ffisamp.dll".
The C++ code is as follows:
*****
//Simple C function that just puts something in a string
// and returns the length of that string both as the RC and as a param
// Keeping the C interface as simple as possible.
__declspec( dllexport ) int PopulateString ( char *FormsBuffer, int *BuffLen)
{
int LocalLength;
strcpy(FormsBuffer,"A Fixed string from within the C program");
*BuffLen = strlen(FormsBuffer);
LocalLength = strlen(FormsBuffer);
return LocalLength;
}
*****
I need C# code that will compile to a dll that mimics the sample dll such that no modifications will need to be made to the calling program. I need to be able to just replace the old dll with the new one.
I am most perplexed that the C++ method is not in a class. That might be that the source code is just a snippet of the whole dll's source code... since it comes from a sample, but I have the impression from the documentation that is all of it. Here is a link to the article I am working with. I am trying to communicate with an Oracle 10g form using methods to call C functions.
http://www.oracle.com/technology/products/forms/htdocs/webutil/howto_ffi.html[^]
I've tried a few things, but so far the calling application doesn't even find the function. 
I am not familiar with C++, MFC etc... so I am sure I am missing some fundamentals.
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AFAIK that's not possible.
C# is managed code, while C++ is unmanaged code. Data and object marshaling in both is very different -not to mention the structure of the dll file, and the method of function exporting-.
Regards ![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
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While I don't know much about C# I am aware that MS went to some effort to make managed code and native code interoperate. I’d be willing to bet it is possible.
Steve
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Stephen Hewitt wrote: I’d be willing to bet it is possible.
If you do, then why didn't you tell us how to do it!
Yes, it's possible somehow, but not in his scenario. You may mean the COM wrapper of DotNet that enables you to make your objects COM visible. He wants to make a C# dll for a program that references a C++ dll without COM, and my bet is that the program doesn't expect a managed code either. Also note that the function doesn't belong to a class which is not allowed in C#.
Regards
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Here's what I said:
Stephen Hewitt wrote: While I don't know much about C# I am aware that MS went to some effort to make managed code and native code interoperate. I’d be willing to bet it is possible.
Nader Elshehabi wrote: If you do, then why didn't you tell us how to do it!
Isn't the answer to this question obvious? "I don't know much about C#". I don't know how, it's just my opinion that it’s possible. What’s more, I’d wager it’s not that complex.
Steve
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As already explained by others, C# can only produce managed code, while your sample is an unmanaged DLL. There are several ways to implement managed-unmanaged interoperability, but there is no simple solution for what you want to do.
One idea that come to my mind requires the creation of two DLLs:
One unmanaged C++ DLL that exports your required method and transforms it into a COM method call. And a COM server DLL that provides the method consumed by the first DLL. The second DLL can be written in C# as managed DLLs can be designed to be callable by COM clients (CCW).
Regards,
Tim
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Well, I actually expected it was the case that I could not fully duplicate the external behavior of a C++ dll, but I wanted to make sure.
The C++ wrapper dll occurred to me and would be possible since we have C++ developers, but it is not a good solution.
Ultimately the problem was solve in another manner. We are communicating through he standard output stream and it works great.
Thanks for everyones comments.
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I'm not sure if this is what you want, but it might be helpful:
Interop[^]
V.
I found a living worth working for, but haven't found work worth living for.
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I would like to add a new row in my datagrid, which is the summary of the other rows in the datagrid. Much like a "Total" row in excel spreadsheet. Thing is, when my user sorts the datagrid by clicking one of the column headers, I would like this Summary row to stay at the bottom. Have done my research but the only thing I came across when it comes to sorting is the AllowSorting() method.
Also, it would be great if I can have my first column also frozen when I scroll to the right, such that the user will be able to see to which row header the value belongs to without having to scroll back to the left everytime.
Thanks in advance!
I am a SysAdmin, I battle my own daemons.
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PS I know how to add another row to the datagrid. What is proving to be tricky is making this extra row stay at the bottom when the column is sorted by clicking the header. Anyone got any idea?
Thanks!
I am a SysAdmin, I battle my own daemons.
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In the ItemDataBound:
Try something like this:
switch e.Item.ItemType
{
case ListItemType.Footer:
e.Item.Cells(0).Text = "Sum : " +FigureSum(internalSum);
}
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I've been looking around for a book or a site that does a good job explaining how to create a custom control. I would like that it cover issues like efficiency and usage of current .Net technologies. I haven't been able to find any information out there except for a book that was written while .NET was in beta. Anybody have suggestions?
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Mr. Rogers wrote: Anybody have suggestions
Ummm... CodeProject[^]?
PS.
Take a special look at hit 5.
Regards
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I found that "Windows Forms Programming in C#" to be an overall excellent book on intermidiate to advanced levels. Written by Chris Sells, published by Addison Wesley.
ISBN # 0-321-11620-8. He covers Custom controls in much detail!
Good Luck
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Hi everyone, i'm a little bit stuck. 
While i was amazing myself discovering the dateset design wizard (which means that me querys methods will get waaaay shorter now  ), i'm not able to insert a row in the Access database.
I'm using a query to load a treeview, which works just fine:
<br />
<br />
private void GenerateTreeview()<br />
{<br />
treeView1.Nodes.Clear();<br />
onAirDataSetTableAdapters.contenidoTableAdapter contAdap = new Loteria.onAirDataSetTableAdapters.contenidoTableAdapter(); <br />
DataTable tabla = contAdap.ObtenerDatos(); <br />
DataView dataViewHijos = new DataView(tabla);<br />
<br />
and so on....<br />
<br />
}<br />
now, i want to add a node on the treeview, and store that into the database table where I have my items. I tried this on a try/catch/finally, just to make sure i'm not getting any errors. I call generateTreeview() function on finally, to reload my Treeview.
<br />
try<br />
{<br />
onAirDataSetTableAdapters.contenidoTableAdapter contAdap = new Loteria.onAirDataSetTableAdapters.contenidoTableAdapter();<br />
contAdap.InsertarCategoria(dlg.nombre, nodoPadretempID); <br />
}<br />
catch (OleDbException ode)<br />
{<br />
MessageBox.Show(ode.ToString(), "Error de Conexion con base de datos");<br />
}<br />
<br />
catch (Exception er)<br />
{<br />
MessageBox.Show(er.ToString());<br />
}<br />
<br />
finally<br />
{<br />
GenerateTreeview();<br />
}<br />
<br />
Everything works ok, i get the updated Treeview while running my app, but the database doesn't get updated.
I restart the app and i get the same initial treeview, and of course, no changes are being performed on the mdb...
PLEASE HELP!!
thanks for eveyones time
kiweed
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