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That is some terrible code.
xEvOx wrote: public static string HexToAscii(byte[] hex)
bad method name, nothing is hex unless it is a string holding the hex representation of something.
should be ToHexString(byte[] bytes)
xEvOx wrote: string temp = hex[i].ToString("X");
if (temp.Length == 1)
temp = "0" + temp;
use ToString("X2") to always get at least two characters
xEvOx wrote: string ascii = "";
in /NET all strings use Unicode, not ASCII.
xEvOx wrote: public static uint BytetoUint(byte[] Data)
another bad method name, it does not convert a byte, in converts a byte array.
and a very inefficient way to do things: you have numbers in the byte array, turn them into a string in order to extract a numeric value. One should never do that, just work with the numbers themselves, something like (untested):
public static uint ToUint(byte[] bytes) {
uint result=0;
foreach(byte b in bytes) result=(result<<8) | b;
return result;
}
 Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]
I only read code that is properly formatted, adding PRE tags is the easiest way to obtain that. [The QA section does it automatically now, I hope we soon get it on regular forums as well]
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Just wondering why this block of code will not clear out databound textboxes that are inside a tab control that is grouped inside a groupbox?
private void add_Button_Click(object sender, EventArgs e)
{
foreach (Control c in this.Controls)
{
if (c is TextBox)
(c as TextBox).Clear();
if (c is CheckBox)
(c as CheckBox).Enabled = false;
}
}
I'm trying to reproduce the same type effect of when the add button is pressed on the tool strip. thanks
How I got it to work if anyone is interested:
private void add_Button_Click(object sender, EventArgs e)
{
bindingNavigator2.BindingSource.AddNew();
}
I just simply had to call the addnew() method on the bindingnavigators bindingsource to put it in add record state.
Thanks to all that helped me with this issue I really appreciate it.modified on Friday, February 12, 2010 10:29 PM
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Controls can be nested, a TabPage resides in a TabControl which could be directly in a Form, or in a Panel inside a Form, or ...
So in order to do something to all children in a Form's Control hierarchy, in general one needs a recursive method (not when the hierarchical structure is known and fixed).
 Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]
I only read code that is properly formatted, adding PRE tags is the easiest way to obtain that. [The QA section does it automatically now, I hope we soon get it on regular forums as well]
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If the textboxes are databound then you need to modify the datasource that is used to populate them.
I know the language. I've read a book. - _Madmatt
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Thank you that makes since...
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Hi all,
I have a task to do, it is about convert/upgrade an existing VB6 application into c#.
I heard it is a hard task to convert VB6 to vb.net furthermore i have to convert it to c#  . I found some tools which can straight away converts the vb6 application to c#, but based on some reviews, It is addressed that the method is sluggish.
my question is, Is it possible for me to convert/upgrade it manually? is it recommended? If so, can anyone provide tutorials or any help regarding this topic. any suggestions, ideas,
solutions and etc will be deeply appreciated..
thank you.
Best Regards,
A.Kogulakannan
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I wouldn't even try to convert the existing VB6 code. There is a vast difference in the tools and technologies that it would be better to rewrite the application so you could take advantage of them.
I know the language. I've read a book. - _Madmatt
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You need to totally rewrite the application, any attempt to convert VB6 to c# is going to require so much manual intervention you might as well rewrite from scratch and implement the latest technologies and concepts that were not even available when the app was written.
Besides, EVERY app can benefit from a rewrite!Never underestimate the power of human stupidity
RAH
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Hi Guys,
I can't believe this is hard. I'm trying to read/write the 64-bit registry from a 64-bit c# application where the project options have x64 for the platform target. I've seen how to access the 32-bit registry using Microsoft.Win32 but there doesn't seem to be a 64-bit equivalent. Of course, with platform target set to x64, a reference to Microsoft.Win32 isn't available.
What am I missing?
TIA,
Steve
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been having problems with a really simple thing this morning but it's starting to get frustrating I'm tying to change the form width to 600 using Form1.Width = 600; but it gives the error message An object reference is required for the non-static field, method, or property 'System.Windows.Forms.Control.Width.get' what am I doing wrong? msdn wasn't any help, neither was vs help.
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Seems that you come from a VB6 background.
You need to refer to the object to set its properties. If you write this code in the form's code behind, you can write :
this.Width=600;
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Hmmm random thought that was only in vb. weird that even in a button you use this.width, thought that would be talking about the button that the code was in rather than the form.
oh well, problem solved. thanks for the quick answer.
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The code you are writing in inside the
public partial class YourForm : Form
{
}so anything in there refers to the particular YourForm instance or it's members, or in the case of static - the YourForm class as a whole. The fact that the code is inside an event handler for a button (Click or whatever) is irrelevant.
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Karrottop wrote: thought that would be talking about the button
No that would be (sender as Button)Never underestimate the power of human stupidity
RAH
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If you write the code in the form's code behind, and you want to access a button (say btnOK), use:
this.btnOK.Width = xxx;
or simply:
btnOK.Width = xxx;
this in C# and Me in VB.Net refers the the current object where the method belongs.
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what is equivalent of setw()in C#
setw() is in C++
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Example:
In C you write:
int x=1;
cout << "Number:" << setw(20) << x << endl;
In C# you write:
int x=1;
Console.WriteLine(String.Format("{0:D}", x).PadLeft(20));
Cheer's,
Alex Manolescu
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Or Console.WriteLine("{0,20}", x)
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Hi, I want to add a "convert samplerate" function to a program that process wav files and I heard that Directshow already has such a function but I couldn't find any info. Does anyone know how to use it? Or is there any other options(without having to use other programs to convert it before loading the file)? (The program is written in C#.)
Thanks~
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In C++ we have TrackPopupMenuEx() function to displays a shortcut menu at the specified location and tracks the selection of items on the shortcut menu.
How can i track the menu item selection in C#.
How can i archive similar functionality in C#.
Sample application appreciated.
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In c# a context menu will be the similar one.
It has a Checked property that you could use:
treat the ClickEvent with something like this:
ToolStripMenuItem ts = sender as ToolStripMenuItem;
if (ts.Checked) { ts.Checked = false; }
else { ts.Checked = true; }
Now you can use a foreach or something to retrive the checked items. Something like:
foreach (ToolStripMenuItem item in contextMenuStrip1.Items)
{
if(item.Checked)
}
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Hi,
I am new to C# , Please suggest the approach.
I have written below code .
public class A
{
public B obj = new B();
public delegate int delegateCalculate(int i, int j);
delegateCalculate dc ;
public int Add(int Num1 , int Num2)
{
return (Num1 + Num2);
}
public int Sub(int Num1, int Num2)
{
return (Num1 - Num2);
}
public void Display()
{
dc = this.Sub;
obj.Result(dc); //error
}
}
public class B
{
public int Num1 = 10 ;
public int Num2 = 20 ;
public delegate int Calc (int i,int j);
public int Result(Calc dc)
{
int ii = dc(Num1, Num2);
return ii;
}
}
The above code gives error for obj.Result(dc); call.
Please suggest how to call Result() of class B in class A.
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One way to do this would be using the Action tag.
Have a look here[^].Me, I'm dishonest. And a dishonest man you can always trust to be dishonest.
Honestly. It's the honest ones you want to watch out for...
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Delegates are not equivalent when they just share the same signature, you could do this if you declare only one delegate type and use that in both places.
Delegate declarations do not have to be inside a class.
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