PropertyGrid Cloning objects

Visual C# Language

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  - 1
    - How to extract character font information from TTF file? This is seems to be what I want. Thanks. But I am a novice in C# and I am afraid I can't work out anything there. I will try, anyway. I appreciate if you give me more information such as sample source code or anything working code. Searched google, but couldn't find much. Please help. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 2
    - 同 How to use c # to write shrinking algorithm? Well, if you have the shrinking algorithm in pseudo-code we might be able to help you write it in C#, but otherwise we are no algorithm builders... Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 3
    - negative images? hi, thanx thats exactly what i wanted!! thank you, everywhere online was over the top, not explained or just didnt work! this does thanx! plus iv got more conrole over what colour to change thanx Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 4
    - How easy is this in C#? Let me boil it down: Is it possible to easily accomplish my overall objective in C#, given the constraints of only being able to use DLLs in the 'client app ' Brandon W. p.s. read "easily" however you want :) Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 5
    - using vb6 component ? OK, Now it worked.. Type objAddType = Type.GetTypeFromProgID("ACEGAC.clsAdmDBConsultas"); //Create Instance object objConsultas = Activator.CreateInstance(objAddType); //Make Array of Arguments object [] myArguments = { 1 }; object c; c = objAddType.InvokeMember("ConsultarAgendamento", BindingFlags.InvokeMethod, null , objConsultas, myArguments); MessageBox.Show(c.ToString()); But there is still a problem, how can I make to show the values of the c object... Like in VB6 it returns a recordset.... Thanks for helping again. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 6
    - PInvoke conversion works fine but with Win32 error here's additonal info for callback signatures: Code Block typedef struct tagVBOBJLOC { int nLeft; int nRight; int nUp; int nDown; } VBOBJLOC; typedef struct tagVBAFILTER { int nLevel; /* Current frame level (0-100) */ int nConfig; /* ACF flag = nConfig & 0x80, Threshold Level (0-100) = nConfig & 0x7F */ } VBAFILTER; typedef struct tagVBVIDAUXDATA { UINT wMdFlags; int nMdNumObjects; VBOBJLOC aMdObjects[VBMD_MAX_OBJECTS]; int nNumFilters; VBAFILTER aFilters[VBMD_MAX_FILTERS]; } VBVIDAUXDATA; conversion: Code Block [StructLayout(LayoutKind.Sequential)] public struct VBOBJLOC { public int nLeft; public int nRight; public int nUp; public int nDown; } [StructLayout(LayoutKind.Sequential)] public struct VBAFILTER { public int nLevel; public int nConfig; } [StructLayout(LayoutKind.Sequential)] public struct VBVIDAUXDATA { public UInt32 wMdFlags; public int nMdNumObjects; [MarshalAs(UnmanagedType.ByValArray, SizeConst = VBMD_MAX_OBJECTS)] VBOBJLOC[] aMdObjects; public int nNumFilters; [MarshalAs(UnmanagedType.ByValArray, SizeConst = VBMD_MAX_FILTERS)] public VBAFILTER[] aFilters; } here's how I call it: Code Block bool bResult = Global.VbMediaEnableRender( m_hDevice, // a confirmed valid IntPtr value Global.VBMTYPE.VBMTYPE_VIDEO, // an enum value picHandle, // from picturebox.Handle null, // i can pass null if i don't want the callback ref x); // where x is IntPtr.Zero if (!bResult) { int err = Marshal.GetLastWin32Error(); // returns 27 w/c is 1B //ERROR_VNET_UNSUPPORTED 0x1B The requested operation is not currently supported by the API. } In my original code i have SetLastError = true so i was able to get the API error which is one of the error codes. What i don't understand is that it works when in C++, but my P/Invoke won't work regards Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 7
    - Using MSIEXEC Product Code is a property of Setup Project. There is also another Upgrade Code used to block you when you try to install the same application and that application is already installed. Go to your setup project, view properties and check the Product Code. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 8
    - May I use FieldAccessException for own purpose ? Thanx, Alberto So when I browse all the exceptions the System-Namespace offers, the only exceptions to use for own purposes are: ArgumentException and ArgumentOutOfRangeException when args don't fit to a own-written method. and for all other purposes inherit it a self-defined one, I see ! Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 9
    - Running a C# Application Outside Windows Operating Systems - Is there a way? Xenocode looks neat, but it actually won't do what you're after anyway, you'll notice it says that it runs in any windows environment . What you're trying to do will require a low level language and, unfortunately, a whole lot of work. If you are outside of the windows operating system, running on bootup, you have to do EVERYTHING yourself. You can't even use any system calls or API's, so no convenient fread even! You'll have to write or find a driver for the disk drive, and something that understands the NTFS (and likely FAT16 and FAT32) file systems This is all VERY low level stuff, and it will take FOREVER. A slightly sneakier and easier way to go about this would be to create a boot disk that runs solely in memory, and put your program on it. I'm not sure how you would go about doing this in windows (although I'm sure there is some commercial solution you could find) but it isn't all that hard to do in linux. I'm not sure if the newest NTFS drivers for Linux allow writing by default, I know they didn't a couple of years ago, but they might now. And after all that you obviously need to be very careful. That low level control, where the operating system can't protect itself, is dangerous. Have fun, but I'd STRONGLY suggest you do your developing and testing on a machine you don't really care about. -mwalts Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 10
    - RTF to PDF convertion using C# Cathy, Thanks for your reply and I'm sorry, I missed your reply. This is interesting, I wasn't sure of where to get the acrobat.dll and the following is what I found out in google. I am not sure if this is the same dll you are talking about http://www.fileresearchcenter.com/A/ACROBAT.DLL-5656.html http://www.file.net/process/acrobat.dll.html Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 11
    - confused in populating array! If you need to accept columnar data I would suggest using a grid control. Using TextBox for columnar data means you have to validate the separators and all that stuff. You should be able to create a grid with a time column and a number column and have it validate the text entered is valid... Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 12
    - Passing a string from a C++ DLL Sadly, that doesn't work. I get complaints during runtime that something is trying to read or write protected data. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 13
    - Programming the parallel port help!!! Hello: I'm looking for projects about programming the parallel port. I found an excellent article at CodeProject.com about leds titled " I/O Ports Uncensored - 1 - Controlling LEDs (Light Emiting Diodes) with Parallel Port" ( http://www.codeproject.com/csharp/csppleds.asp ). It’s very useful because I’m studying Computer Architecture in my University. But now, I want to see another projects. I found on Internet projects based on C, but I want projects based on .NET. Can you help me Thanks. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 14
    - how to call contructor of base class from constructor of inherit class hi, It's quite nature that the base class dont have a constructor with no param for you to invoke. But you can still create a new base class object cause system will assign a default constructor. So if you want to call it, add a constructor for base class. BR Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 15
    - Equals Method Oh, it's a class Thanks alot, Aw Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 16
    - How can I recover a lost vshost.exe.manifest file I believe that you are correct. My problem was elsewhere. It is true that I could no longer build my immediately after doing a deploy and I interpreted the error message that came up as indicating a missing file. I have worked around the problem by opening a new project and dragging all the relevant files from the original project into the new one. I can now rebuild the app, although I cannot see the design of my main form - instead I get the default empty form. Something is not pointing to something properly because I have another form in the project that does show the proper design. Thanks for responding. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
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  - 1
    - Type Reference and Object Name TaylorMichaellL, Thank you for the answer. I am quite familiar with most of the concepts you have mentioned. If possible, please help me to further clarify the following statements as well as the questions that I have asked in my first post. I will use your example to ensure that we are talking about the same things. “Meanwhile var and var2 both point to the same place in memory.” Which one is the actual pointer, var or MyClass I thought var in this case is the name of the actual variable that resides in the computer memory whereas MyClass is the pointer to var. So the CLR would use MyClass (the object pointer) to find var (the actual object) and not the other way round. Is my understanding of this logic correct “although var is of type IMyClass, it actually points to an instance of type MyClass. The compiler/runtime ensures that the members are called correctly” Do you mean that IMyClass is a reference type for the variable var and that var is a reference type for MyClass Does the Variable var store the values of Myclass ( ) through the = operator or does it only provide a reference pointer to the class MyClass or is it both “It is important to understand that a variable has a type and the instance that it points to might be a different type. Provided the types are compatible (i.e. the instance can be converted to the variable's type) then it is legal. This is useful because oftentimes you want your variables to work with as many different types as possible. Therefore variables are often typed to be the most generic type available that still allows you to call the members that you want.” Would you be able to show the logic of this relationship using a diagram What you seem to be saying is that the object var is not just a concrete object that resides in the computer memory but it also servers as a reference to the class MyClass which the object var is a member or an instance of. So the reason why the constructor would have the same name as the class is because this is the only way to identify var as the member of MyClass Is IMyClass var simply a variable declaration where the nature of IMyClass is identical to a string or integer type of a variable “I recommend that you get a good book on OOP because these concepts are consistent in all OOP languages. The only real .NET difference is reference vs. value types. Once you get a good understanding of OOP then look up reference vs. value types in MSDN and that should clarify the differences” Yes the concepts that are used in my questions are fundamental OOP concepts. However another aspect of my questions tries to look into the issues that are related to the object creation process through the CLR. Without a sound understanding of how the CLR actually carries out its job, I find it rather difficult to consolidate my knowledge in OOP. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 2
    - is my code leaking memory? I've just started reading about threading myself, but one rule that I read was to try avoiding creating threads manually and just 'lease' threads from the thread pool instead. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 3
    - XmlReader and deep copy Then how do I achieve what i have set out to Thanks Peter Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 4
    - Casting parent class to child Got a better answer that doesn't require me to change tons of my code. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 5
    - Show Desktop The reference is Microsoft Sheel Controls And Automation. I did the following: Shell32.ShellClass shell = new Shell32.ShellClass(); shell.MinimizeAll(); Thanks! Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 6
    - Using C++ SDK in C#? I have a set of cameras that I need to write a program to operate and the manufacturer provides an SDK in C++. However, the system I need to interface with is all being written in C# and I need to know if there will be a problem running those function (I assume there will be) Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 7
    - Migration to 2005 I am migrating to 2005, is there any easy way to get snippets over into 2005 from 2003 and is there any easy way to get the contents of the toolbox i.e. componets over to 2005 Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 8
    - storing values between two forms Hi, Also, you could use QueryString or Server.Transfer. BTW, ASP.NET related questions should be asked on http://forums.asp.net/ Thank you. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 9
    - Cannot Open Image file from Console Application (C#) Uploaded file link is given in a grid when i click on particular cell the following code is executed. try { DataTable dt = ( DataTable )dataGridView2.DataSource; string FilePath = dt.Rows[e.RowIndex][7].ToString(); FilePath = "Department/" + FilePath; System.Diagnostics. Process .Start(FilePath); } catch ( Exception exp) { MessageBox .Show( "Cannot Open File " ); } This is the code where i get the file path of uploaded file and i try to open it. .txt and .doc works fine problem is with image files. It doesn't even give "Cannot Open File" message. Nothing happens. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 10
    - report logging the report.. or logs, are stored as text files.. these text files are time stamped.. example, 2006-12-14 16:25:19.34 ****** Using '********.DLL' version '*.*.***'. 2006-12-14 16:25:19.34 ****** Starting up database 'model'. 2006-12-14 16:25:19.34 ****** Starting up database 'msdb'. such entries will continue to be logged.. including those done by users.. currently the system only takes one entry at a time.. it cannot support multiple entry at any one time.. hope you can help.. thanks. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 11
    - Environment.SpecialFolder.MyDocuments in C#1.1 thanks Peter for your fast reply. actually it does exist in 1.1, BUT i do not see this specialfolder enum in my solution. what could make it dissapered gosh i guess this should work too - string filename = Environment.GetEnvironmentVariable("USERPROFILE"); Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 12
    - I would like to ask about Face Detection That was very interesting answer Ryan! I'm willing to try that technique in some program.. Thanks! Regards, Timo Salomaki Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 13
    - C# Newbie - Problem with syntax? Compiler: Visual C# 2005 Express I am tring to see if a file exists and if it does delete it. To see if the file exists I am using: bool exists; exists = Syste.IO.File.Exists(@"c:\test.txt"); To delete the file I am using: System.IO.File.Delete(@"c:\test.txt"); The test file is located in c:\ and is called test.txt however, exists always returns false and the file is never deleted. What am i doing wrong What is the purpose of the @ symbol before the file name thanks Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 14
    - myprocess.Start() is not working for me in .net 2003 Hi, please post the error you are getting when you run the code. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 15
    - only view select text in textbox hi aaaaaaahhh string's SubString() method is what you're after: string s = "hello there this string is a lot more than 8 characters long but we'll only show 8"; textBox.Text = s.SubString(0.8); -Jeff Tag: Visual C# Language PropertyGrid Cloning objects Visual C#
  - 16
    - Dialogs Cause Program to Freeze Does it say [STAThread] or [MTAThread] next you your program's Main() method I think it needs to be [STAThread] if you use a ColorDialog in your program. Tag: Visual C# Language PropertyGrid Cloning objects Visual C#

B-Dubs

I have a TypeConverter that returns a set of standard values to display a dropdown list of objects of type B for a property of type A. It appears that the PropertyGrid in 2.0 is cloning objects when setting the property for multiple SelectedObjects. In prior levels I was able to get multiple objects of type A to reference the same object of type B via a set in the propertygrid. Is there some way I can do this in 2.0 without implementing ICloneable for class B and making Clone() return this

Re: Visual C# Language PropertyGrid Cloning objects

bitbonk

I have the same problem, only that instead of using clone the propertygrid creates the copy using serialization, as described here:

http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=1208317&SiteID=1

Did anyone find a solution to this

Re: Visual C# Language PropertyGrid Cloning objects

Figo Fei - MSFT

Hi,

For such issues please use an appropriate newsgroup, potentially one at http://msdn.microsoft.com/newsgroups.

Thanks

Re: Visual C# Language PropertyGrid Cloning objects

bitbonk

The appropiate msdn forum would be: Windows Forms Designer

Here is my issue:

http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=1208317&SiteID=1