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1. No problem - the ArrayList is also serializable
2. No problem as long as all used classed are serializable (either by atrtibute or ISerializable interface)
3. Probably a problem but this depends. With the default behaviour this isn't possible. You will either have to implement ISerializable to hae a better control on what is being serialized or have an ISerializationSurrogate to stop certain classes from being serialized. If later is valid in your case depends on your data structure.
(Bonus)
4. Keep in mind that .Net serialization is rather slow. If you are serializing a rather big amount of stuff you'll be better of doing it yourself. This is especially true if you have lots of small objects.
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Thanks so much.
Then I think I need to do it for myself coz speed is my first concern.
May I ask you also whether any pattern for this kind of manually serialization so that I won't miss out any attributes in the class to be serialized manually or it can reduce errors as my class already changes ?
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I don't think I have any real good advice for you. The only way to reduce errors would be to write an Unit-Tests which first serializes one instance of your class, then deseriealizes it and checks the equality of the result with some kind of recursive technique using reflection to catch all fields.
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How do you create an MMC snap In in C#?
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This may be a wierd question but has anyone ever heard of interaction between Assembly and C#. Some instance where Assembly code is embedded in C# code etc.
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Mridang Agarwal wrote:
This may be a wierd question but has anyone ever heard of interaction between Assembly and C#. Some instance where Assembly code is embedded in C# code etc.
If by Assembly, you mean x86 ASM, so there's no way of embedding Assembly code in C#, that's why you won't find any samples.
I see dead pixels
Yes, even I am blogging now!
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Hi,
As a beginning C# programmer I have some trouble getting this ODBC function to work.
<br />
[DllImport("odbc32.dll",CharSet=CharSet.Ansi)]<br />
private static extern short SQLGetDiagRec( <br />
short HandleType, <br />
IntPtr inputHandle, <br />
ushort RecNumber, <br />
string SqlState, <br />
short NativeError, <br />
String MessageText, <br />
short bufferLength, <br />
short TextLength );<br />
<br />
<br />
<br />
<br />
String messageText = string.Empty;<br />
short messageTextlen = 128;<br />
short nativeErr = 0;<br />
string sqlState = " ";<br />
short rc = SQLGetDiagRec(<br />
SQL_HANDLE_ENV, <br />
m_environmentHandle, <br />
1, <br />
sqlState, <br />
nativeErr, <br />
messageText, <br />
messageTextlen, <br />
128);<br />
Whatever I do, after all ODBC calls I make, sqlState will always show spaces and messagetext will always be an empty string
I guess I'm doing something wrong here, but can't begin to wonder what.
Is the declaration with DLLImport of this function not correct, is there something wrong with the parameters when the function is called ? Should I use pointers maybe (I thought in C# that was no longer necessary)
I hope some of the guru's can get me going on this 
Thanks,
Shah ![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
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Anyone got any clues ?
please ??
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how do i use WMI and how can i view a list of all the WMI classes. How does one use WQL statements? I know for a fac t that they are pretty similar to SQL syntax but what are the table names, column names etc?
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ANYONE GOOD IDEAS?
I want to display Bitmaps with DirectX. I need a good performance, for that reason I'm not using GDI+. I load the Bitmaps into a Texture and draw them on Screen using the DrawPrimitives()-Method. It works fine for small Bitmaps.
But I need to display large Bitmaps (e.g. 5000x4000 Pixels), which cannot be directy loaded in ONE Texture. My graphics card supports textures up to 4096X4096 Pixels, which is even not enough And most of the common graphics cards don't support textures this size, right?
How can I split one Bitmap in different Textures so that I can display these Bitmaps? That was my idea, but I don't know how to do it. 
Or does anyone have another idea of displaying Bitmaps this size? 
I would be very greatful if anyone can help me! 
Silka
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silka_c# wrote:
I want to display Bitmaps with DirectX. I need a good performance, for that reason I'm not using GDI+. I load the Bitmaps into a Texture and draw them on Screen using the DrawPrimitives()-Method. It works fine for small Bitmaps.
Why don't you use something like BitBlt? GDI (not GDI+) is hardware accelerated and highly portable between cards. Not to mention easier to use for the kind of thing you're tring to do. It's often used on simpler, 2D games and it's fast enough for most uses...
I see dead pixels
Yes, even I am blogging now!
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The Idea sounds good. I would give it a try.
I searched a little bit in the web and the MSDN.
How do I use BitBlt in C#. Did you use it in a c#-application and could you give me some code snippets?
Thanks a lot for your help.
Silka
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Thanks again, Daniel.
I made BitBlt work but it is not much faster than the old version with DrawImage().
Are there any other ideas?
Thanks for your help.
SILKA
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silka_c# wrote:
Are there any other ideas?
How fast do you need to go? 5000x4000 pixels == 5000x4000x4 bytes ~~ 76MB
This should take a while to transfer over any bus...
Besides that, do you really have a card/monitor that is able to display such a beast?
I see dead pixels
Yes, even I am blogging now!
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Hi Daniel,
sorry, I've been on vacation for a while.
No, my monitor/ graphics card won't display the whole Image, that's why i started to think about resizing it to a moderate size.
Do you know, how I can do it in Direct Draw? I'm right now trying to figure out how fast it would be with Direct Draw (Managed DirectX 9.0).
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I am wanting to have the current selected row highlighted. I have added a mouse click the datagrid for:
dataGrid1.Select(dataGrid1.CurrentCell.RowNumber);
and this is setting the row if I click on the grid, but if I click in a cell, the cell is going into edit mode and the row is not highlighted. I am trying to create a read only grid similar to a listview and then use an edit button or double click to show an edit form.
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First of all: Please don't post two question with (nearly) the same topic.
Now to your question:
It is possible but you'll have to invest a bit of work. Create a class and inherit from DataGridTextBoxColumn. Override the Edit function and do nothing (do not call the base implementation). This will prevent the TextBox being shown and the Click event will reach the grid. If you also have a boolean column you will have to do the same with the DataGridCheckBoxColumn.
Finally you will have to make your own DataGridTableStyle so that the grid uses your new classes.
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If you are using the class DataGridTextBoxColumn to create the columns of your datagrid then you can access the TextBox that receives the events from the DataGridTextBoxColumn to start editing text. You probably need to add a handler for the VisibleChanged event of the TextBox and if the state just became visible then send a escape keystroke and select the row instead, and finally, you can popup your form. Note that you can set both, the TextBox and the DataColumn to Readonly to prevent changes.
Hope that helps.
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I have set the dataGrid.ReadOnly = True and this is preventing the values in the cells from being changed. However,is there also a setting to prevent the cell from going into edit mode when the cell is clicked?
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Hello All,
I made a Component with Com+ and i market every class with the Just in time activation but. and i designed a windows form application to use this component. I added this component to my application with add refrences from the visual studio but when i try to use the application the programes hange.
Please any help if i did any error.
Regards,
Haytham
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