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In exploring the VS2003 IDE, i tried out the Mark All feature in the replace dialog. How do you unmark code that gets marked?
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So those markings are bookmarks. Now i know. Thanks for the tip.
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Hi,
Last year I created a program that uses binary serialization for file saving. In the near future I'm planning on creating a new revision of this program, which will include many class structure changes from the current version. It seems that when using object serialization, adding and changing variables to current classes will cause errors during deserialization of older files. Are there ways to allow files created by older software versions to be compatible with newer ones? This is an area of programming I've never really explored. I'm unsure of common practices.
Thanks for any tips!
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If you're using C# 2005 you can use the [OptionalFieldAttribute] on new class variables, and when you deserialize the class, the vars that have the above tag wont be required and therefore wont throw an exception.
If you're using C# 2003, you can look into manually controlling the serialization process.
BTW: M$ is giving away C#, VB, and C++ express for free until Nov. 2006.
If you get them before then, you will never have to pay for them. You can download CD images of each.
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hi...
my problem is... that I have some rtf text without Rtf headers. For example: "hell\\`b1".
The plain text should be "Helló".
Is there a quick way to do this translation (rtf to plain)?
I know, there is a way to do it...but it is complex.
thanks
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read it in a text box
"Not everything that counts can be counted..."
-Albert Einstein
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Hi!
You could try adding a minimal RTF header yourself:
string rtf = @"{\rtf1\ansi"+myRtfFragment+"}";
richTextBox1.Rtf = rtf;
MessageBox.Show("Plain text is '"+richTextBox1.Text+"'");
Regards,
mav
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How can I add days to a rowfilter column?
I want to add 30 days to ExpirationDate which is a column name in the dataview. dt is current date. In a nutshell, expirationdate + 30 days >= current date
Please help!
dv.RowFilter = "ProducerNameCode = '" + agentCode +"' AND ExpirationDate >= '" + dt +"'";
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this is what i whant to do
private void Form1_Load(object sender, EventArgs e)
{
Test(CLLER);
Test(Bob);
}
private void Test(?????? t)
{
//t should be the sub i want to call! so how would i do this?
t("Test");
}
private void CLLER(string T)
{
MessageBox.Show(T);
}
private void Bob(string T)
{
this.Text = T;
}
thanks
codegreen
-- modified at 19:52 Thursday 17th November, 2005
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I think you have the wrong impression of method overloading. Why not just do
..In the form load event
{
Test(CLLER); <<-- Assuming these are string objects
Test(Bob); <<-- Assuming these are string objects
}
void Test(string T)
{
if(String.Compare(T,"CLLER")== 0)
{
MessageBox.Show(T);
}
else
{
this.Text = T;
}
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because i have a more complex code
public void CheckCrossThread(string data, string scase)
{
//DataReceived(this, data);
if (((System.Windows.Forms.Form)_Form).InvokeRequired)
{
SetTextCallback d = new SetTextCallback(CheckCrossThread);
((System.Windows.Forms.Form)_Form).Invoke(d, new Object[] { data,scase });
}
else
{
switch (scase)
{
case "DataReceived":
DataReceived(this, data);
break;
case "Disconnected":
Disconnected(this);
break;
case "TCPError":
TCPError(this, new Exception(data));
break;
default:
TCPError(this, new Exception("Not Found")); ;
break;
}
}
I use this for most of my projects but its hard to keep editing it over and over again. i would like (scase) to call the sub it was passed
thanks
codegreen
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Take a look at the "delegate" keyword.
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Instead of having to do a switch and determine which method to execute based on the string value, I'd recommend passing some delegate that contains the code to execute. For example, using C# 2, if I wanted CheckCrossThread to execute DataReceived method, I could do:
this.CheckCrossThread("someData", "DataReceived", (System.Threading.ThreadStart)delegate{ DataReceived(this, "someData") });
public void CheckCrossThread(string data, string scase, ThreadStart methodToExecute)
{
...
methodToExecute();
}
Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Bought a House!
Judah Himango
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that is what i need thanks, BUT C# doesn't like
this.CheckCrossThread("someData", "DataReceived", (System.Threading.ThreadStart)delegate{ DataReceived(this, "someData") });
it says } needs ;
I fix that but it needs a method the DataReceived is and event
-- modified at 18:01 Friday 18th November, 2005
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It can be done using reflection, but it is probably a little slow, so use it sparingly:
<br />
private void Form1_Load(object sender, EventArgs e)<br />
{<br />
Test("CLLER");<br />
Test("Bob");<br />
}<br />
private void Test(string t)<br />
{<br />
GetType().InvokeMember(t, System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.InvokeMethod, null, this, new object[] {"Test"});<br />
}<br />
private void CLLER(string T)<br />
{<br />
MessageBox.Show(T);<br />
}<br />
private void Bob(string T)<br />
{<br />
this.Text = T;<br />
}<br />
}<br />
Check out the documentation for InvokeMember, for more information.
-----
In the land of the blind, the one eyed man is king.
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I have code to call a DLL that I wrote in C (see end of message). This code has worked fine for months. I reloaded my OS and installed a fresh vs2005 rc and now I'm getting a System.DllNotFoundException. It also says: Unable to load DLL 'copy.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
My DLL is in my working directory just as it was before. My project setup has not changed and the working directory is specified correctly. What could have changed to cause this error?
[DllImport( "copy.dll", CharSet = CharSet.Unicode )]<br />
public static extern int BackupClose( long hash1, long hash2 );<br />
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Hello everybody. I downloaded de VC# 8 Express. While it works well, I'm having a problem with the doc compiler. I do my comment stuff:
<br />
interface IProperty<br />
{ ... }<br />
And when I compile it, it generates me the XML output file. So far so good. However, I cannot find a tool that actually builds the documentation as in VC# 7. So my question is: is there available any tool that allows me to document C# 2 code (and I mean, human-readable documentation), or is there any integrated tool with VC# 8 Express?
Thanks a lot.
...it's not right in one life, too much rain...
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I need to query ADAM from .net code. Could someone please point me in the right direction?
Thanks
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And which reference to "ADAM" would you be referring to?
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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I was referring to 'Active Directory Application Mode'
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Try searching MSDN for "C# ADAM". You'll find a bunch of examples.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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this code gives the error "A local variable named 'var' cannot be declared in this scope because it would give a different meaning to 'var', which is already used in a 'parent or current' scope to denote something else".
I don't see why it should be a problem, the 1st i is out of scope before the 2nd one is created.
<br />
int[] intarray = new int[10];<br />
foreach (int i in intarray)<br />
{<br />
i++;<br />
}<br />
int i = 5;
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The first 'i' is not out of scope of the second i. When a variable is declared in a foreach/for loop it is the same as the following.
int i;
for ( i=0; i++; i<5 )
{
}
The scope of the variable is outside of the loop.
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