Re: Tristate Checkbox - C# Discussion Boards

13-May-05 0:00

hi,
You have to derive class using ComboBox and override mousemove method.

public class Class1:System.Windows.Forms.ComboBox
{ private ToolTip tp = new ToolTip();

public Class1()
{}
protected override void OnMouseMove(System.Windows.Forms.MouseEventArgs e)
{
tp.SetToolTip(this,this.Text);
this.Invalidate();
}

}

//=============================================
In the main program you can use intance of class1 instead of ComboBox
private ListBoxToolTips.Class1 comboBox1;

regards,
pubudu..

Tristate Checkbox

skrishnasarma12-May-05 18:59

skrishnasarma

12-May-05 18:59

Hi there

I wand to develop a custom control in C# that is Tristate Checkbox,
Shall I get any sample coe in C#?

Re: Tristate Checkbox

pubududilena12-May-05 19:12

How to convert C# Application exe to C# code again?

12-May-05 19:12

hi,
You may get help from this article:-
http://www.codeproject.com/cs/miscctrl/TriStateTreeViewSubmissio.asp[^]

regards,
pubudu..

Re: Tristate Checkbox

mav.northwind12-May-05 22:58

mav.northwind

12-May-05 22:58

Hi!
The CheckBox component in the FCL already has everything you need.
Just set the ThreeState property to true and you're done, no need to re-invent the wheel!

mav

pubududilena12-May-05 17:12

Re: How to convert C# Application exe to C# code again?

12-May-05 17:12

hi all,
Is there a way to get C# code again from C# Application EXE?

thanks in advance..

Judah Gabriel Himango12-May-05 18:45

Judah Gabriel Himango

12-May-05 18:45

If I'm understanding you right, you need a disassembler. Search google for Lutz Reflector.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: The Secular Left, the Religious Right, and Prejudice
Judah Himango

Re: How to convert C# Application exe to C# code again?

Priyank Bolia13-May-05 2:37

Priyank Bolia

13-May-05 2:37

Does they give the original code as it is, I don't think so?

http://www.priyank.in/

Re: How to convert C# Application exe to C# code again?

Dave Kreskowiak13-May-05 2:52

how to encode string in serialization

13-May-05 2:52

It's impossible to regenerate the original source code exactly how you wrote it. What you'll see is the equivalent code as translated from the IL.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Green Fuze12-May-05 14:36

Green Fuze

12-May-05 14:36

hey everybody!

I'm serializing some strings in an application, but one of the string is a password. the thing is that when I go to the file that I'm serializing to, I can see with notepad the password clearly.

is there anyway to encode and decode this string before serializing it ?

Re: how to encode string in serialization

Stefan Prodan12-May-05 20:11

Stefan Prodan

12-May-05 20:11

Well here it is a function that i use to encode strings in XML files:

/// <summary><br />
/// Convert To Base64<br />
/// </summary><br />
/// <param name="text">clean text</param><br />
/// <param name="type">1(Unicode) 2(ASCII) 3(UTF7) 4(UTF8)</param><br />
/// <returns>Base64 string</returns><br />
public static string ToB64(string text, Int16 type)<br />
{<br />
        string rez = null;<br />
        switch (type)<br />
	{<br />
		case 1: //Unicode<br />
		rez = Convert.ToBase64String(Encoding.Unicode.GetBytes(text));<br />
		break;<br />
		case 2: //ASCII<br />
		rez = Convert.ToBase64String(Encoding.ASCII.GetBytes(text));<br />
		break;<br />
		ase 3: //UTF7<br />
		rez = Convert.ToBase64String(Encoding.UTF7.GetBytes(text));<br />
		break;<br />
		case 4: //UTF8<br />
		rez = Convert.ToBase64String(Encoding.UTF8.GetBytes(text));<br />
		break;<br />
	}<br />
	eturn rez;<br />
}

and to decode:

/// <summary><br />
/// Convert From Base64<br />
/// </summary><br />
/// <param name="text">encrypted text</param><br />
/// <param name="type">1(Unicode) 2(ASCII) 3(UTF7) 4(UTF8)</param><br />
/// <returns>clean text</returns><br />
public static string FromB64(string text, Int16 type)<br />
{<br />
	string rez = null;<br />
	switch (type)<br />
	{<br />
	case 1: //Unicode<br />
	rez = Encoding.Unicode.GetString(Convert.FromBase64String(text));<br />
	break;<br />
	case 2: //ASCII<br />
	rez = Encoding.ASCII.GetString(Convert.FromBase64String(text));<br />
	break;<br />
	case 3: //UTF7<br />
	rez = Encoding.UTF7.GetString(Convert.FromBase64String(text));<br />
	break;<br />
	case 4: //UTF8<br />
	rez = Encoding.UTF8.GetString(Convert.FromBase64String(text));<br />
	break;<br />
	}<br />
	return rez;<br />
}

Re: how to encode string in serialization

StealthyMark13-May-05 4:38

StealthyMark

13-May-05 4:38

I'm assuming you want to serialize your class with the XmlSerializer. The simplest trick is to mark your cleartext Password field/property with XMLIgnore and add another property providing an encrypted password.

using System;
using System.ComponentModel;
using System.Xml.Serialization;
using System.Security.Cryptography;
 
[Serializable]
public class UserData
{
    [XmlIgnore]
    public string Password;
 
    [XmlElement("Password", DataType = "base64Binary")]
    [EditorBrowsable(EditorBrowsableState.Never)]
    public byte[] EncryptedPassword
    {
        get
        {
            // use the classes in the System.Cryptography
            // namespace to return the encrypted password
            return YourEncryptMethod(Password);
        }
        set
        {
            // use the classes in the System.Cryptography
            // namespace to decrypt the encrypted password
            Password = YourDecryptMethod(value);
        }
    }
}

Another possibility is to implement the IXmlSerializable interface and serialize your class manually.

HTH, Mark

Interop question C#

IsaacB12-May-05 12:58

IsaacB

12-May-05 12:58

Hi, anyone has an idea of how to call a function with the following signature

long csp2TimeStamp2Str(unsigned char *Stamp, char *value, long nMaxLength)

in C# I declare it like this

[DllImport("csp2.dll", EntryPoint="csp2TimeStamp2Str")]
public static extern int csp2TimeStamp2Str(
[MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder blah,
[MarshalAs(UnmanagedType.LPArray)] byte[] lpBuffer, int maxLength);

Thanks in advance

Re: Interop question C#

pubududilena12-May-05 17:10

Application always on top?

12-May-05 17:10

hi pl check like this:-
[DllImport("csp2.dll",EntryPoint="csp2TimeStamp2Str",ExactSpelling=false,SetLastError=true)]
public static extern int csp2TimeStamp2Str(out char stamp,out char value,int maxLength);

regards,
pubudu.

Re: Interop question C#

StealthyMark13-May-05 5:18

StealthyMark

13-May-05 5:18

Do you have any documentation?

The first parameter unsigned char *Stamp might be
1. a pointer to a simple value, possibly taken from an enumeration
ref char stamp
ref short stamp
[MarshalAs(UnmanagedType.U2)] ref YourEnumType stamp
2. a [In] null-terminated unicode string
[MarshalAs(UnmanagedType.LPWStr)] string stamp
3. a [Out/maybe In] null-terminated unicode string
[MarshalAs(UnmanagedType.LPWStr)] StringBuilder stamp
4. a [In] data array, its length is given in parameter nMaxLength
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)] char[] stamp
5. a [Out] data array, its length is the return value of the function
IntPtr stamp

This goes for the second parameter as well, except for the last two possibilities, one is an [Out] parameter, the other one is an [In] parameter.

Without some documentation it is very hard to tell.

Mark

Anthony Mushrow12-May-05 12:32

Anthony Mushrow

12-May-05 12:32

How can i get my app to always beinfront of all other running programs, even when its not active (Just like the task manager)

If your task manager is not always on top go 'Options' --> 'Always on top'

Dave Kreskowiak12-May-05 14:25

12-May-05 14:25

In your Form's properties, find TopMost and set it to true.
Or, in the form's code:

this.TopMost = true;

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

cjengler13-May-05 0:00

cjengler

13-May-05 0:00

It may be that I just don't have enough coffee in me yet this morning but out of curiousity, if I have two apps with both set to TopMost which one actually appears on top? Guessing it would be the last one open but I may be wrong.

Dave Kreskowiak13-May-05 0:57

13-May-05 0:57

The last one opened gets the top spot in the Z-Order.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Sebastian Schneider13-May-05 1:30

Sebastian Schneider

13-May-05 1:30

Out of curiosity (as well):

Is Z-Order shared among monitors or does each screen have its own Z-Order?

Meaning, if I have 2 programs which are set to top-most and I drag one to another screen, will it "stay" on top of others apps on that screen?

Im asking because the program I am writing would be ideal to have on top on a second screen, so I just was curious if setting "top-most" would be enough.

As usual, the user can easily disable "top-most" at the press of a menu item Wink | ;)

Cheers,
Sebastian

--
Contra vim mortem non est medicamen in hortem.

Dave Kreskowiak13-May-05 2:50