|
Hi,
I'm pretty sure this is as easy as it gets, but I couldn't find anything in the documentation.
I'd like to change the string representation of an int so, that the numbers get padded with 0's up to a certain amount of characters: For example I'd like to pad up to 4 characters, then a 17 should look like this '0017'.
Any help is greatly appreceated.
Matthias
If eell I ,nust draw to your atenttion to het fakt that I can splel perfrectly well - i;ts my typeying that sukcs.
(Lounge/David Wulff)
www.emvoid.de
|
|
|
|
|
If you take a look at Numeric Format Strings[^] in the .NET Framework SDK documentation, you'll see the following will work:
using System;
class Test
{
static void Main(string[] args)
{
int i = 17;
Console.WriteLine(i.ToString("0000"));
Console.WriteLine("{0:0000}", i);
}
}
This posting is provided "AS IS" with no warranties, and confers no rights.
Software Design Engineer
Developer Division Sustained Engineering
Microsoft
[My Articles]
|
|
|
|
|
Try looking up Format Specifications. What you want is something like "%04d"
|
|
|
|
|
This is C# Mark, not C/C++. 
This posting is provided "AS IS" with no warranties, and confers no rights.
Software Design Engineer
Developer Division Sustained Engineering
Microsoft
[My Articles]
|
|
|
|
|
Right, my mistake. Damn all these languages.
|
|
|
|
|
I have a collection object that contains hierarchical data... Here's how it looks:
ID, Name, ParentID, Description
=================================
1 , Bob, NULL, I'm a parent
2 , Sam, 3, I'm a child
3 , Tom, NULL, I'm a parent
4 , Jill, 1, I'm a child
5 , Kid, 2, I'm a grandchild
I need to get these items into a tree stucture... Notice that the list is unordered. My coder sensors sense a recursive routine, but I'm wondering if there is some other solution hanging out there I haven't thought of.
Thanks,
Adam
|
|
|
|
|
I've developed a system like this that is actually quite fast, and have posted the solution here before. One thing to add, though, use TreeView.BeginUpdate and TreeView.EndUpdate before and after you build the tree, respectively.
See http://www.codeproject.com/script/comments/forums.asp?msg=911562&forumid=1649#xx911562xx[^] for details (which includes a link to another thread where I've discussed this before).
This posting is provided "AS IS" with no warranties, and confers no rights.
Software Design Engineer
Developer Division Sustained Engineering
Microsoft
[My Articles]
|
|
|
|
|
Adam Wimsatt wrote:
My coder sensors sense a recursive routine, but I'm wondering if there is some other solution hanging out there I haven't thought of.
I don't see this as recursive. Rather, I would walk the list in two passes.
Pass 1: Create nodes
Pass 2: wire-up child/parent relationships
I'd probably maintain a Hashtable keyed with the ID to easily locate the parent node.
Once the tree structure is built, you can put it into a view, like a TreeList. This kind of stuff is perfect for an MVC pattern--the Controller can manage getting the data out of the database, the Model can manage the internal tree management, and the View can handle constructing a TreeList or other visual representation.
Well, that's my 2c.
Marc
MyXaml
Advanced Unit Testing
|
|
|
|
|
Hi
I'm using a WebBrowser object in my form to display the results of a Dataset. All is good in formatting the html into a table, but I'm seeming stuck with the standard stylesheet - Times Font and all the other defaults.
How can a set a stylesheet when I set the HTML data? Saving the report to a temporary file and navigating to it causes the control to use the stylesheet defined in the file, but I don't want to do it that way, I want to set the text and set the stylesheet all with my program.
Cheers
Dave
|
|
|
|
|
|
As far as I can tell that returns a read-only collection of stylesheet - if the page had a stylesheet to begin with I could possibly alter it, but not add to them
I did manage a sort-of work around using the createStyleSheet method of msthml.HTMLDocumentClass. It does mean having to have the stylesheet in a file rather than generate it, but it does what I need it to.
|
|
|
|
|
Just to let you know, Microsoft.mshtml.dll comes with VS.NET, IIRC, which is far better to use than creating your own since it's the PIA (primary interop assembly) produced by Microsoft. I think it also comes with Office, but I'm honestly not sure.
Just letting you know.
This posting is provided "AS IS" with no warranties, and confers no rights.
Software Design Engineer
Developer Division Sustained Engineering
Microsoft
[My Articles]
|
|
|
|
|
Thanks, I will keep that in mind the next time a similar question is asked here. 
- Nick Parker
My Blog | My Articles
|
|
|
|
|
Hi all!
Here is my problem:
I am developing a Windows service written in C#. The work of this service is to send an alert by mail when the total memory of the OS is too high for example. I'm using the System.Web.Mail namespace to send a mail and everything is ok. I put this piece of code in a thread to make my application more reliable, like that:
' the code for sending mail is in the ThreadLoop method of the Job class
Thread jobThread = new Thread(new ThreadStart(current_job.ThreadLoop));
jobThread.Start();
' wait until the job is done or the timeout is reached
bool noTimeout = current_job.Mre.WaitOne(30*1000, false);
' stop the thread...
jobThread.Abort();
Ok. My problem occured when there is a big file attached to the mail, and the timeout is reached. The method Abort() does not quit the thread until the entire mail is sent...
And I cannot add a timeout to the System.Web.Mail.SmtpMail.Send method, then I am stuck.
Is there a way to force the termination of a thread?
Thanks.
|
|
|
|
|
I need a component that I can drag around the form at run time. The component must have multiple text sections. And the user should be allowed to drag and drop buttons anywhere on the component. The component should be able to be stored, in other words if the program is closed and re-opened the component should be rebuilt with the same text and buttons in the same place
Basically this is what I need:
Text text text text text text text text text text text text text text
text text text text text text text text text text text text
text text text text text text
text text text text text text text text text
text text text text text text
text text text text text text text text text text text text
<<Button1>>
text text text text text text text text text text text text
text text text text text text
text text text text text text text text text
<<Button1>>
|
|
|
|
|
You should try searching for one, then. The C# forum is for specific problems with the C# language and related .NET question (ASP.NET question - even if written in C# - belong in the ASP.NET forum specifically).
This web site includes many articles about document/view, runtime drag and drop, and serialization. MSDN[^] (the Microsoft Developer Network) has many other articles, and you can always google[^].
This posting is provided "AS IS" with no warranties, and confers no rights.
Software Design Engineer
Developer Division Sustained Engineering
Microsoft
[My Articles]
|
|
|
|
|
Hi all,
When i change an expandable property of an object from the property grid, the set method of that propertin is not being called, where as the set methods of its sub properties are being executed.
what may be the reason?
please help...
regards,
Pradeep
|
|
|
|
|
If this is a property you're developing, you should implement your own TypeConverter[^] (for an expandable object, extend ExpandableObjectConverter[^] if you like). You'll want to override and implenent the GetCreateInstanceSupported and CreateInstance methods. You should read the documentation for these in the .NET Framework SDK, which includes examples.
This will create a new object to be serialized to your source code file, which the designer will handle automatically.
Another good section of the .NET Framework SDK to read is Enhancing Design-Time Support[^], which covers a lot of design-time topics.
This posting is provided "AS IS" with no warranties, and confers no rights.
Software Design Engineer
Developer Division Sustained Engineering
Microsoft
[My Articles]
|
|
|
|
|
Thanks stewert.. It works fine.
|
|
|
|
|
Hi All,
Does any one know how to retrive a datagrid cell color?
I am using a datagrid which uses multiple colors? I required to print that datagrid. While printing I need to retain the cell colors. As of now I know only to get the header color of a datagrid.
I will appreciate if someone can help me in solving the problem.
Thanks,
Jo
|
|
|
|
|
hi,
Here in this article i am trying to assign and update colors of rows, cells etc. You can use this to know how to change the color of cells
DataGridTableStyle
**************************
S r e e j i t h N a i r
**************************
|
|
|
|
|
Hi Sreejith,
That article is nice. I am interested in getting the color of a given datagrid cell.
thanks,
Jo
|
|
|
|
|
DataGrid.Items[0].Cells[0].BackColor;
|
|
|
|
|
Hi Mark,
I am using DataGrid in Windows forms. I couldn't find anything like
DataGrid.Item[0]
regards
Jo
|
|
|
|
|
OPC defines two main components(COM) registered in opcserver category : OpcServer & OpcGroup. I have written two coresponing classes as follows that implement the required Interfaces as defined by OPC.
[Guid( "926EFA52-C020-4259-B879-203512901EAF" )]
[ProgId("FAHM OPC Server 1")]
[ComVisible( true )]
public class OpcServer: IOPCServer, IOPCCommon, IOPCItemProperties, IOPCBrowseServerAddressSpace
{}
[Guid( "075A7104-076F-481f-8CCF-11BA9AE375EB" )]
[ProgId("FAHM OPC Group 1")]
[ClassInterface(ClassInterfaceType.None)]
public class OpcGroup: IOPCItemMgt, IOPCAsyncIO2, IOPCSyncIO, IOPCGroupStateMgt
{}
I can in a not managed programming language such as delphi or c++ create an instance of them and call all methods of both of them and QueryInterface them to all implemented Interfaces and see they are working by showing just a messagebox for test.
The problem is that the IOPCServer Interface defines a method AddGroup as follows that returns an instance of OPCGroup and has following signature in c++ and c#:
c++:
virtual HRESULT STDMETHODCALLTYPE AddGroup(
/* [string][in] */ LPCWSTR szName,
/* [in] */ BOOL bActive,
/* [in] */ DWORD dwRequestedUpdateRate,
/* [in] */ OPCHANDLE hClientGroup,
/* [in][unique] */ LONG __RPC_FAR *pTimeBias,
/* [in][unique] */ FLOAT __RPC_FAR *pPercentDeadband,
/* [in] */ DWORD dwLCID,
/* [out] */ OPCHANDLE __RPC_FAR *phServerGroup,
/* [out] */ DWORD __RPC_FAR *pRevisedUpdateRate,
/* [in] */ REFIID riid,
/* [iid_is][out] */ LPUNKNOWN __RPC_FAR *ppUnk) = 0;
c# :
void AddGroup(
[In, MarshalAs(UnmanagedType.LPWStr)] string szName,
[In, MarshalAs(UnmanagedType.Bool)] bool bActive,
[In] int dwRequestedUpdateRate,
[In] int hClientGroup,
[In] ref int pTimeBias,
[In] ref float pPercentDeadband,
[In] int dwLCID,
[Out] out int phServerGroup,
[Out] out int pRevisedUpdateRate,
[In] ref Guid riid,
[Out, MarshalAs(UnmanagedType.IUnknown)] out object ppUnk);
When in the unmanged code call this method of IOPCServer, it seems to be ok, but the returned object in ppUnk that supposed to be a IOPCItemMgt fails to execute any of its methods and raises an memory exception. I tried following implementation for OPCSerevr.AddGroup but all of them have the same wrong result:
impl. 1:
Type typeofGroup = Type.GetTypeFromProgID( "FAHM OPC Group 1" );
if( typeofGroup == null )
throw new Exception("OPC Server Not Found");
object grp = Activator.CreateInstance( typeofGroup );
IntPtr pRes = IntPtr.Zero;
IntPtr pUnk = Marshal.GetIUnknownForObject(obj);
Marshal.QueryInterface(pUnk, ref riid, out pRes);
Marshal.Release(pUnk);
Marshal.Release(pUnk);
if (!pRes.Equals(IntPtr.Zero))
ppUnk = pRes;
else
Marshal.ThrowExceptionForHR(HResult.E_NOINTERFACE);
impl. 2:
object grp = new OpcGroup();
ppUnk = IntPtr.Zero;
ppUnk = Marshal.GetComInterfaceForObject(grp, typeof(IOPCItemMgt));
impl. 3:
object grp = new OpcGroup();
ppUnk = grp;
impl. 4:
object grp = new OpcGroup();
ppUnk = (IOPCItemMgt)grp;
And for each of mentioned lines in above implementaions I surrounded it with a try-catch block and showed messageboxes after each successfull or failed block, and it seems that none of them fails, but I don't know why the returned IOPCItemMgt is incorrect. Can anyone help me?
Special Regards
Umed Kurdistan
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
