C# Discussion Boards - CodeProject

Re: TCPListener over Internet

Harvey Saayman2-Jul-08 1:50

Harvey Saayman

2-Jul-08 1:50

nothing is imposible my friend... especially when it comes to programming

i just think its unpractical Smile | :)

Harvey Saayman - South Africa
Junior Developer
.Net, C#, SQL
you.suck = (you.passion != Programming)

Re: TCPListener over Internet

İsmail Durmaz2-Jul-08 1:53

İsmail Durmaz

2-Jul-08 1:53

Application Projects model

chenli05132-Jul-08 0:05

chenli0513

2-Jul-08 0:05

Application Projects model
i want get it
that's community server ask for me:"
In order to open the web project in VS2005 you will first need to install the Web Application Projects add-in from Microsoft."

i am not clearly known the WAP model for VS2005 that's use for the Project community server .
i need it !

Re: Application Projects model

leppie2-Jul-08 0:16

leppie

2-Jul-08 0:16

chenli0513 wrote:
In order to open the web project in VS2005 you will first need to install the Web Application Projects add-in from Microsoft."

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IronScheme - 1.0 alpha 4a out now (29 May 2008)

UserControl and Inheritance

koleraba1-Jul-08 23:41

koleraba

1-Jul-08 23:41

Hi
In my project I have quite a few User controls. A lot of them have same methods so I could really use the functionality of inheritance. The problem is that if I create a UserControl that extends my UserControl, and not the base UserControl, I have troubles with that partial class that is generated by the VS2008(class.g.cs) becouse that class extends base UserControl. Even if I fix this, the next time I change something in the designer the VS re-generates that class. By the way I am using WPF. Does anybody know how I could fix this? Any idea will be appreciated.

Uros

Re: UserControl and Inheritance

Alan Balkany2-Jul-08 3:51

Alan Balkany

2-Jul-08 3:51

You can avoid reimplementing the same methods for each control by defining a new class that has the common methods. Then include an instance of this class in each control, and invoke this instance for each common method.

It's a way of getting around the lack of multiple inheritance in C#.

storing unicode text in mysql

Jayawant Karale1-Jul-08 23:37

Jayawant Karale

1-Jul-08 23:37

Hi,
I am using c# windows application to store unicode text (other than English) in mysql 5.1 database.
I am using ODBC Connector 3.50.

when I try to insert a unicode text in database it stores as ?????????.

insert into dbName(unicdeText)values('?????');

Please help me to solve this query.

Re: storing unicode text in mysql

ChandraRam1-Jul-08 23:53

ChandraRam

1-Jul-08 23:53

Member 3965884 wrote:
I am using c# windows application to store unicode text (other than English) in mysql 5.1 database.
I am using ODBC Connector 3.50.

when I try to insert a unicode text in database it stores as ?????????.

insert into dbName(unicdeText)values('?????');

Please help me to solve this query.

What is the data type of the field into which you are trying to store this data?

Re: storing unicode text in mysql

Jayawant Karale3-Jul-08 18:33

Jayawant Karale

3-Jul-08 18:33

I am having varchar data type in mysql databsae.
there is no data type such as nvarchar

Re: storing unicode text in mysql

ChandraRam3-Jul-08 19:29

ChandraRam

3-Jul-08 19:29

Maybe you need to look here[^]

Deserializing an object into another namespace.

Syed Mehroz Alam1-Jul-08 23:10

Syed Mehroz Alam

1-Jul-08 23:10

Is it possible to deserialize an object that was previously serialzed under different namespace.

Let me try to explain this using some code:

namespace OldNamespace
{
    [Serializable]
    public class Class1
    {
       .....
    }
}

Now I have moved the class to a different namespace.

namespace NewNamespace
{
    [Serializable]
    public class Class1
    {
       .....<same declaration="">
    }
}</same>

The problem is that now I can't deserialize objects that were previously serialized using old code. Is their a way out.

Here's the error I get: Unable to load type OldNamespace.Class1 required for deserialization.

Thanks,
Syed Mehroz Alam

My Articles

Re: Deserializing an object into another namespace.

Giorgi Dalakishvili1-Jul-08 23:14

Giorgi Dalakishvili

1-Jul-08 23:14

This might help: Advanced Binary Serialization: Deserializing an Object Into a Different Type Than the One It was Serialized Into[^]

Giorgi Dalakishvili

#region signature
my articles
#endregion

Re: Deserializing an object into another namespace.

Syed Mehroz Alam1-Jul-08 23:23

Syed Mehroz Alam

1-Jul-08 23:23

Thanks for a very quick reply Giorgi. Let me go through it and write back to you if it works for me.

My Articles

Re: Deserializing an object into another namespace.

Syed Mehroz Alam2-Jul-08 0:15

Syed Mehroz Alam

2-Jul-08 0:15

Wonderful

. It worked!! Thanks again.

Syed Mehroz Alam

My Articles

Re: Deserializing an object into another namespace.

Giorgi Dalakishvili2-Jul-08 8:12

Giorgi Dalakishvili

2-Jul-08 8:12

Glad to help you Smile | :)

Giorgi Dalakishvili

#region signature
my articles
#endregion

Data binding and form

muharrem1-Jul-08 22:22

muharrem

1-Jul-08 22:22

I have two questions

1.I have a 2 diffrent forms. From one form to another how can switch?
let say I have button control to go for it.

2.I have a Datatable and want show each row data on a different label control.
So each row shoul be displayed on o different group of label controls.

Can I bind in this way, how? Currently I am reading each row data and displaying
on label controls.

Thanks,

Muharrem

Re: Data binding and form

N a v a n e e t h1-Jul-08 22:33

N a v a n e e t h

1-Jul-08 22:33

1 - Just show/hide it.
2 - One label for one row ? iterate through each row, create Label instance and add to the form.

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

How to use google | Ask smart questions

Re: Data binding and form

Elroy Dsilva2-Jul-08 0:42

Elroy Dsilva

2-Jul-08 0:42

1.) Use the Form.Show() and Form.Hide() methods.

2.) One thing you can do with your label instances is to organise them into a collection such as a list as List<Label>. Write some method that would retrieve the data from the database and fill the Labels' text. Do this on a timer tick if you need your form to reflect the changes done to your database dynamically.

sorting DataGridView which is binded to BindingSource.

jekak1-Jul-08 21:48

jekak

1-Jul-08 21:48

I have a DataGridView which is binded to BindingSource that receive data from WCF service.
My problem is that I would like to sort data (rows).
Does anybody knows the way of sorting rows(DataGridView ) or BindingSource.

thnks

Re: sorting DataGridView which is binded to BindingSource.

Harvey Saayman1-Jul-08 22:23

Harvey Saayman

1-Jul-08 22:23

check out the DataView class, it might help

good luck Smile | :)

Harvey Saayman - South Africa
Junior Developer
.Net, C#, SQL
you.suck = (you.passion != Programming)

3D Solid geometry library

Hari_10101-Jul-08 21:26

Hari_1010

1-Jul-08 21:26

Can anyone specify a 3d geometry library with all functionalities.

Re: 3D Solid geometry library

ajtunbridge2-Jul-08 2:48

ajtunbridge

2-Jul-08 2:48

OpenCASCADE. It's all in C++ but there are a few wrappers for C# floating about. Alternatively, you can purchase Eyeshot which looks pretty impressive. Hope this helps.

Drawing line object in custom user control [modified]

cocoonwls1-Jul-08 21:21

cocoonwls

1-Jul-08 21:21

hi all,

I have a custom user control which will draw a grid as a background by using

Bitmap bit = new Bitmap(Width, Height, e.Graphics);<br />
Graphics gpb = Graphics.FromImage(bit);

and i have been override OnPaintBackground(PaintEventArgs e) to prevent paint background frequently.

My question is how to make a Drawline object like normally AutoCAD do Confused | :confused:

.Example,user can select Drawline button and start to draw a line on the grid and allow to draw as many they want.(if possible,i would like to know the logic or concept behind).The purpose i separate the Drawline object with the background is to allow user to move or delete the certain line using mouse.

Any ideas ,tips or suggestion are welcome

note:i have an example of drawtools but i am confusing on it(it may too complicated to me Dead | X|

)
http://www.codeproject.com/KB/graphics/drawtools.aspx[^]
http://www.codeproject.com/KB/graphics/OpenS-CAD.aspx[^]

Thanks in advance
cocoonwls

modified on Wednesday, July 2, 2008 3:50 AM

Re: Drawing line object in custom user control

Harvey Saayman1-Jul-08 22:33

Harvey Saayman

1-Jul-08 22:33

i sugest you make a double buffered panel fisrt, so that image doesnt flicker...

to create the doubleBufferPanel add this class to a .cs file in your project

namespace DoubleBufferPanelNameSpace
{
    class DoubleBufferPanel : Panel
    {
        public DoubleBufferPanel()
        {
            this.SetStyle(ControlStyles.AllPaintingInWmPaint |
                     ControlStyles.UserPaint |
                     ControlStyles.DoubleBuffer |
                     ControlStyles.ResizeRedraw,
                     true);
            this.UpdateStyles();
        }
    }
}

i had some issues with the designer generated code, that's why it has its own namespace.

compile the project, you'll see the double buffer panel show up in the toolBox. this is the object youll draw on.

youll be interected in the Panel_MouseClick event for its Args object which will give you the X Y coordinates of the mouse pointer which can be saved as a Point object for use in the Panel_Paint event.

hope this helps Smile | :)

good luck

Harvey Saayman - South Africa
Junior Developer
.Net, C#, SQL
you.suck = (you.passion != Programming)

Re: Drawing line object in custom user control

cocoonwls2-Jul-08 16:38

cocoonwls

2-Jul-08 16:38

Hi,

yes,i got your idea.But according to your suggestion,how can i put the onpaint method into each line object?Because i don't want all the line object repaint everytime when one of them changed(change location or line width). And the below description i was found is describe what i actually want..

store drawable objects in an array. Each drawable object knows how to draw itself. 
On repaint, just iterate over the array of drawable objects. 
So for a line, create a Line class that implements IDrawable. 
Store the state of the line in the line object so that the line knows where it goes and 
what it looks like. The OS clips the drawing to the dirty drawing rect so that 
only the dirty portion of the screen is redrawn. 
If you call invalidate the entire screen will be redrawn.

thanks in advance

regards
cocoonwls

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