Re: Basic question about memory allocation - C# Discussion Boards

rajeevktripathi13-Aug-07 3:33

13-Aug-07 3:33

Hi All

I am using PropertyGrid to show the properties of object..
want to use property grid with combo box and taking help from this MSDN link..
http://msdn2.microsoft.com/en-us/library/aa302326.aspx

here is the code that I am using..

<br />
<br />
using System;<br />
using System.Collections.Generic;<br />
using System.Text;<br />
using System.ComponentModel;<br />
<br />
namespace PropertyGridTest<br />
{<br />
    [DefaultPropertyAttribute("Person")]<br />
    class Person : StringConverter<br />
    {<br />
        public Person(string inName, string inAddress, int inAge, bool inEmployed)<br />
        {<br />
            name = inName  ;<br />
            address = inAddress  ;<br />
            age = inAge ;<br />
            employed = inEmployed;<br />
        }<br />
<br />
<br />
        public Person(string inName)<br />
        {<br />
            name = inName;<br />
        }<br />
<br />
<br />
        private string name;<br />
        private string address;<br />
        private int age;<br />
        private bool employed;<br />
<br />
<br />
        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)<br />
        {<br />
                        return true;<br />
        }<br />
        public override bool GetStandardValuesSupported(ITypeDescriptorContext context)<br />
        {<br />
            return true;<br />
        }<br />
<br />
        public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)<br />
        {<br />
            return new StandardValuesCollection(new string [] {"AAA", "BBB", "CCC", "DDD" });<br />
            <br />
        }<br />
<br />
        public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)<br />
        {<br />
            return false;<br />
        }<br />
<br />
       <br />
<br />
        [TypeConverter(typeof(Person)), <br />
        CategoryAttribute("Person Details"), DescriptionAttribute("Name of the Person")]<br />
        public string Name<br />
        {<br />
            get<br />
            {<br />
                return name;<br />
            }<br />
            set<br />
            {<br />
                name = value;<br />
            }<br />
        }<br />
<br />
        [CategoryAttribute("Person Details"), DescriptionAttribute("Address of the Person")]<br />
        public string Address<br />
        {<br />
            get<br />
            {<br />
                return address;<br />
            }<br />
            set<br />
            {<br />
                address = value;<br />
            }<br />
        }<br />
<br />
        [CategoryAttribute("Person Details"), DescriptionAttribute("Employed")]<br />
        public bool IsEmployed<br />
        {<br />
            get<br />
            {<br />
                return employed;<br />
            }<br />
            set<br />
            {<br />
                employed = value;<br />
            }<br />
        }<br />
<br />
        <br />
        [CategoryAttribute("Person Details"),<br />
        DescriptionAttribute("Age of the Person")]<br />
        public int Age<br />
        {<br />
            get<br />
            {<br />
                return age;<br />
            }<br />
            set<br />
            {<br />
                age = value;<br />
            }<br />
        }<br />
    }<br />
}<br />
<br />
<br />

and

<br />
<br />
private void radioButton1_CheckedChanged(object sender, EventArgs e)<br />
        {<br />
            if (radioButton1.Checked)<br />
            {<br />
                try<br />
                {<br />
                    Person person = new Person("John", "CA", 5, false);<br />
                    propertyGrid1.SelectedObject = person;<br />
                }<br />
                catch (Exception ex)<br />
                {<br />
                    MessageBox.Show(ex.Message);<br />
                }<br />
            }<br />
<br />

Now when i run the application then a exception is caught and the message is "Constructor on type PropertyGridTest.Person not found" is popped up,
also "Name" property is disabled.

Please help me to solve this problem..
that is how to show combobox in propertyGrid.

Please help me.

Thanks & Regards

Re: Problem with Property Grid

leppie13-Aug-07 5:13

leppie

13-Aug-07 5:13

rajeevktripathi wrote:
Person : StringConverter

Your class should not derive from a TypeConverter, rather use the TypeConverter attribute to decorate the 'Person' class.

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Re: Problem with Property Grid

rajeevktripathi13-Aug-07 19:10

rajeevktripathi

13-Aug-07 19:10

HI Thanks for your reply...

Please tell me that how to decorate Person class from TypeConverter attribute

but in the MSDN link learened that I have to derive my class from the TypeConverter ...

So PLease help me in resolving the problem...

Thanks & Regards

Basic question about memory allocation

A M SOMAN13-Aug-07 3:24

A M SOMAN

13-Aug-07 3:24

I have a very basic question.
If I declare some variables in my class and just run my C#.Net program, without any work done in it, will it allocate a memory for these variables?

For Example,

Class abc
{
public int a;
public double b;
}

Regards,
Anil

Re: Basic question about memory allocation

blakey40413-Aug-07 3:26

blakey404

13-Aug-07 3:26

yes - when an instance of the class is created

Re: Basic question about memory allocation

A M SOMAN13-Aug-07 3:36

A M SOMAN

13-Aug-07 3:36

Does that mean, when we include say System.Data.SQLClient namespace on the top of our class, it copies all the classes inside this namespace at runtime and allocates memory accordingly even if we don't use anything in it?

Regards,
Anil

Re: Basic question about memory allocation

blakey40413-Aug-07 3:39

blakey404

13-Aug-07 3:39

no not when including the namespaces/classes, when instantiating them

Re: Basic question about memory allocation

N a v a n e e t h13-Aug-07 3:52

N a v a n e e t h

13-Aug-07 3:52

A M SOMAN wrote:
Does that mean, when we include say System.Data.SQLClient namespace on the top of our class, it copies all the classes inside this namespace at runtime and allocates memory accordingly

It will allocate memory once you create instance for it. class1 c1; won't allocate any memory. But class1 c1 = new class1() will allocate memory space.

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How to connect to Remote PC using C# Coding?

N a r e s h P a t e l13-Aug-07 3:20

N a r e s h P a t e l

13-Aug-07 3:20

Hi, I am using C# 2.0 and want to connect Remote PC using Windows Form environment in C#. Is that possible to connect to remote using IP Address.
Do not worry about the permission assume we have access to username and password of the Remote PC.

Is this possible in local network PC??? If yes then how??? Rose | [Rose]

Replay me. Cool | :cool:

Naresh Patel

Re: How to connect to Remote PC using C# Coding?

Justin Perez13-Aug-07 3:24

Justin Perez

13-Aug-07 3:24

Yes, it is possible. Use System.Runtime.Remoting

I get all the news I need from the weather report - Paul Simon (from "The Only Living Boy in New York")

Re: How to connect to Remote PC using C# Coding?

N a r e s h P a t e l13-Aug-07 3:32

N a r e s h P a t e l

13-Aug-07 3:32

But How. Is there any codding sample for this type of Idea???

Naresh Patel

Re: How to connect to Remote PC using C# Coding?

Justin Perez13-Aug-07 3:45

Justin Perez

13-Aug-07 3:45

Yeah, there is more code samples than you can shake a stick at. Google it, C# remoting.

I get all the news I need from the weather report - Paul Simon (from "The Only Living Boy in New York")

Re: How to connect to Remote PC using C# Coding?

Michael Sync13-Aug-07 16:36

Michael Sync

13-Aug-07 16:36

nareshgoradara wrote:
Is that possible to connect to remote using IP Address.

How do you want to connect that remote PC?

Remote Desktop?

You can use either Microsoft Web Remote Desktop Connection or C# VNCClient.

Microsoft Remote Desktop

For Developer: Remote Desktop Web Connection [^]

Remote Desktop Manager (MSTSCUI.NET)[^]

C# VNC Client

VNC-Client for .NET is a VNC-Client written in C# using the .NET Framework.[^]

Is that remote PC FTP Server?

C# FTP Client Library[^]

FTP Server in C# [^]

Console FTP in C#[^]

Is that remote PC EMail Server?

So, If it's IMAP, use Outlook dll for accessing Email Server.

OR

OpenSmtp.Net[^]

OpenSource ASP.NET webmail application written in C#[^]

C# Email Server[^]

Is there any remoting host or socket host running in that remote PC?

Then, connect with remoting or socket

Is that remote PC Web Server?

then, it's simple, Try to connect like that ~ http://remotemachine/mywebsite1/

Smile | :)

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

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How to find the item that selected in ListView ?

Yanshof13-Aug-07 3:09

Yanshof

13-Aug-07 3:09

I have ListView and i need to know the item that seleceted in event - how to do it ?

Re: How to find the item that selected in ListView ?

Justin Perez13-Aug-07 3:12

Justin Perez

13-Aug-07 3:12

lv.SelectedItems();
or
lv.SelectedIndices();

I get all the news I need from the weather report - Paul Simon (from "The Only Living Boy in New York")

Re: How to find the item that selected in ListView ?

Giorgi Dalakishvili13-Aug-07 3:13

Giorgi Dalakishvili

13-Aug-07 3:13

Have a look at SelectedItems property.

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Instollation Solution

Thaer Hamael13-Aug-07 2:56

Thaer Hamael

13-Aug-07 2:56

hi all
i creeat solution by type setup and deployment
but my application connect to database in sql server2005 and i wount to put the database in my instolation solution
how i can do that
thanks to all

Thaer

Re: Instollation Solution

Justin Perez13-Aug-07 3:03

Justin Perez

13-Aug-07 3:03

Execute the create script for your db when the installation runs.

I get all the news I need from the weather report - Paul Simon (from "The Only Living Boy in New York")

Re: Instollation Solution

Thaer Hamael13-Aug-07 3:59

Thaer Hamael

13-Aug-07 3:59

Thanks Mr Justin Perez

I do it but the instolation feilds and give me this message

DataBase creation fault
Aconnection was Successfully established with the Server ,but then an error occured during the login Process (provider :Shared Memory Provider , error Blush | :O

-N Process is on the other end of the pipe.)
what is the problem and how i can solve it
thanks for you Mr Justin Perez

Thaer

Re: Instollation Solution

Justin Perez13-Aug-07 4:14

Justin Perez

13-Aug-07 4:14

The problem is that the user account you were using on your development machine doesn't exist on your target machine. Set up that same account for that DB on the machine you are installing to and that should take care of the issue.

I get all the news I need from the weather report - Paul Simon (from "The Only Living Boy in New York")

rexec in C#

aziz_subaie13-Aug-07 2:44

aziz_subaie

13-Aug-07 2:44

hi guys,

how can I user rexec in c#

I want to access my linux machine ?
if you have any free dll that do this job for me Smile | :)

my code

<br />
             Process p = new Process();<br />
            <br />
             p.StartInfo.UseShellExecute = false;<br />
             p.StartInfo.RedirectStandardInput = true;<br />
             p.StartInfo.RedirectStandardOutput = true;<br />
<br />
<br />
             p.StartInfo.FileName = "rexec lnx5e048 -l subaaa0p \"setenv DISPLAY :0 ;ls -al\"";<br />
<br />
             StreamReader myStreamReader = p.StandardOutput;<br />
             Console.WriteLine(myStreamReader.ReadToEnd());<br />

please help Smile | :)

Re: rexec in C#

Paul Conrad16-Aug-07 16:26

Paul Conrad

16-Aug-07 16:26

How are you trying to access your Linux machine? Is rexec a program on your Linux machine? If so, you will not be able to run it from Windows because the executables are different.

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Re: rexec in C#

aziz_subaie17-Aug-07 2:44

aziz_subaie

17-Aug-07 2:44

I can user rexec in windows to access virtual Linux desktop and execute my linxs application from throw this virtual desktop.

I can access it simply if I use command DOS :\ --> (rexec hostName -l Username "command")

how can I do it in C#
Do I have to use Process class? if yes how ??

Smile | :)

Re: rexec in C#

Paul Conrad17-Aug-07 12:20

Paul Conrad

17-Aug-07 12:20

aziz_subaie wrote:
Do I have to use Process class?

Yep.

aziz_subaie wrote:
if yes how

Look it up on MSDN... Big Grin | :-D

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Re: rexec in C#

aziz_subaie17-Aug-07 18:36

aziz_subaie

17-Aug-07 18:36

thanks

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