Re: Date Issue - C# Discussion Boards

getting more curve points after drawing GDI curve?

mxb12114-Sep-05 8:37

14-Sep-05 8:37

Hello,

I am trying to make a program where I can get curve data points after placing a few points on screen and having the Windows GDI Draw a curve from those few points. I already have the program done to the point where I can place points and draw a curve, but now I want to be able to get the data of many points on that drawn curve. So if I place five points, and let the GDI draw the curve I would like to be able to get around 100 data points that lay on that curve. Does anyone know where I could get this functionality in C#. I have been searching online for a while. I wish the GDI would just have a function where I could just get all the points it uses to draw the curve but I don't think that is built in.

Thanks for your help,

Michael Brown

split into an array when delimetr is string

tekken2214-Sep-05 8:28

tekken22

14-Sep-05 8:28

need to split into an array string where delimeter is "ftp://";

(please note that I can not change
"ftp://" to single char, and I have no idea how many ftp sites there might be
to extract, could be one, could be 100's or 1000's)

Re: split into an array when delimetr is string

doubledottie14-Sep-05 11:12

doubledottie

14-Sep-05 11:12

Why can't you replace the "ftp://" with a "|" or something and then do the split?

Re: split into an array when delimetr is string

Christian Graus14-Sep-05 11:32

Christian Graus

14-Sep-05 11:32

Regular Expressions.

Christian Graus - Microsoft MVP - C++

Using a calender not listed in culture

Leyu14-Sep-05 8:00

Leyu

14-Sep-05 8:00

i am trying to use my own calendar class derived from the abstract calendar class in System.Globalization i need my custom calendar because what i want is ethiopian calendar, the calensar works OK, but the problem is there is no culture specified by microsoft for ethiopian (Amharic) Language so i've gotten away by using other culture and changing editable parts of it for globalization,localization of the application; now the problem is i can not assign a calendar for any culture, i need it for local date conversion & automatic formatting is there any way to get around this.

Re: Using a calender not listed in culture

Leyu14-Sep-05 18:56

Leyu

14-Sep-05 18:56

I was waiting for a reply any of u guys never run to this...

Date Issue

bhushanvinay114-Sep-05 7:52

bhushanvinay1

14-Sep-05 7:52

I have different date formats for eg.

1) dd-MM-yyyy
2) MM-dd-yyyy

user can prefer to have one format in the preferencess tab.
and he enters a date 06/05/2005

in format a i have to read it as 06-May-2005 ie 20050506T00:00
in format b i have to read it as 05-Jun-2005 ie 20050605T00:00

How do i say that read the date as per the specified format.

Is it possible to have a function like

public datetime ParseExact_Custom(strDate,strInputFomrat,strOutputFormat)
{
............
//what should i do here ??
//if you can convert them to "s" also would be greate.
}

if any body please could help me i will be thank full

Vinay Bhushan.S

Vinay Bhushan.S

Re: Date Issue

Guffa14-Sep-05 9:46

Guffa

14-Sep-05 9:46

From MSDN:

The following sample demonstrates the ParseExact method.

string strMyDateTime = "2/16/1992 12:15:12";<br />
<br />
// myDateTime gets Feburary 16, 1992, 12 hours, 15 min and 12 sec.<br />
System.DateTime myDateTime =<br />
    System.DateTime.Parse(strMyDateTime);<br />
<br />
System.IFormatProvider format =<br />
    new System.Globalization.CultureInfo("fr-FR", true);<br />
<br />
// Reverse month and day to conform to a different format.<br />
string strMyDateTimeFrench = "    16/02/1992 12:15:12";<br />
<br />
// myDateTimeFrench gets Feburary 16, 1992, 12 hours,<br />
// 15 min and 12 sec.<br />
System.DateTime myDateTimeFrench =<br />
    System.DateTime.Parse(strMyDateTimeFrench,<br />
                          format,<br />
                          System.Globalization.<br />
                            DateTimeStyles.NoCurrentDateDefault);<br />
    <br />
string[] expectedFormats = {"G", "g", "f" ,"F"};<br />
// myDateTimeFrench gets Feburary 16, 1992, 12 hours,<br />
// 15 min and 12 sec.<br />
myDateTimeFrench = <br />
    System.DateTime.ParseExact(strMyDateTimeFrench,<br />
                               expectedFormats,<br />
                               format,<br />
                               System.Globalization.<br />
                                DateTimeStyles.AllowWhiteSpaces);<br />

---
b { font-weight: normal; }

Re: Date Issue

bhushanvinay14-Sep-05 10:01

bhushanvinay

14-Sep-05 10:01

I know this is in the MSDN
but i dont want to apply any culture here i have two very specific date formats and i have to treate the string in that format as date.

is there a possibility or i have to write a custom split join and create a new date object form them or its possible to format andy given string in any format.

Regards
Vinay

Re: Date Issue

Guffa15-Sep-05 2:04

Guffa

15-Sep-05 2:04

The CultureInfo object contains a DateTimeFormatInfo object that tells the parser how to parse the string. You can use just a DateTimeFormatInfo object as format provider, and create the object with any settings you like.

---
b { font-weight: normal; }

Change Colour of Rows in DataGrid

zaboboa14-Sep-05 6:33

zaboboa

14-Sep-05 6:33

Hello,

How can I change the colour of the rows in the datagrid, depending on the row number?

Thank you,

how do i deploy an application that uses crystal reports?

AfzalHassen14-Sep-05 4:30

AfzalHassen

14-Sep-05 4:30

Hi,

i've developed an application that makes use of crystal reports... when i test the ap on a machine that only has the .NET framework installed i get the following error

"Could not load file or assembly 'CrystalDecisions.CrystalReports.Engine, Version=10.2.3600.0,Culture=neutral,PublicKeyToken=692fbea5521e1304' or one of its dependancies. The system cannot find the file specified." Confused | :confused:

i guess this means that the referenced assemblies are not being included/generated/ copied to the output directory... in either case, how do i overcome this set back?? Sigh | :sigh:

i always assumed that if i developed an app that used Crystal reports that when i deploy, the IDE (VS2005 in my case), would create the necessary assemblies...

any jelp would be great, Smile | :)

Thanks

Afzal "AV-E" Hassen

Re: how do i deploy an application that uses crystal reports?

Mark0614-Sep-05 11:40

Mark06

14-Sep-05 11:40

Unsure about vs2005, but in vs2003, you need to include the assemblies in the setup/deployment package.

When you do this, you have to enter the license key you got when you registered crystal reports. This get built into the package. When the package is installed on another pc, all the relevant files for CR are installed aswell.

Check out http://www.crystaldescisions.com There's some knowledgebase stuff in the support section explaining how to do it.

Andy

UserControl not marked as serializable

edvler14-Sep-05 3:11

edvler

14-Sep-05 3:11

Hi there,

I'm creating a Windows Forms Application that primarly uses User and other derived Controls in order to extend their properties.

One of the property is a collection - the type is derived from System.Collections.CollectionBase. The type of the elements is a class which only contains some data elements.

To have a user friendly selection in the property grid of Visual Studio a type converter class is implemented for both - the collection and the elements class. The Serializable-Attribute is set too, and the ToString-Method is overriden for the elements class.

The controls using the classes described above works fine in the Forms Designer except cut or copy an element into the clipboard produces a message box with the text

The type MyApplication.Controls.MyControl in Assembly ... is not marked as serializable.

FYI: The collection and item class is defined in a sepparate Assembly and the Controls are also in a different Assembly.

Any suggestions are welcome

Thanks in advance

Horst

How to collapse an array?

Yannielsen14-Sep-05 3:09

Yannielsen

14-Sep-05 3:09

Hi there.

I'm fiddling around with arrays and i need to collapse (re-arrange) an array. Currently i have no clue how to do it, so if anyone could help out with a little example or some hints i would be thankful.

An example of what i want to do:
---------------------------------

An array containing 5 elements

1 - 2 - 3 - 4 - 5

If i remove element index 3 from the array i want the index of element 4 to change to 3 and the index of element 5 to chance to 4. How is this possible?

Thanks alot in advance!

Re: How to collapse an array?

Dan Neely14-Sep-05 4:08

Dan Neely

14-Sep-05 4:08

Create a temp array, copy all the other elements to it, then assign the temp to the old array.

Re: How to collapse an array?

esjq14-Sep-05 4:30

esjq

14-Sep-05 4:30

Take a look at the ArrayList. Smile | :)

XML serialization

Yoyosch14-Sep-05 2:46

Yoyosch

14-Sep-05 2:46

I have a simple class:

public class Test
	{
		public Test()
		{
		}

		public string name;
		public int age;
	}

and part of the code used in de/serialization:

Test c;
Test a = new Test("martinez", 21);
Test b = new Test("kate", 20);
TextWriter tw = new StreamWriter("c:/text.txt");

System.Xml.Serialization.XmlSerializer ser = new System.Xml.Serialization.XmlSerializer(typeof(Test));

ser.Serialize(tw,a);			
ser.Serialize(tw,b);
tw.Close();

TextReader tr = new StreamReader("c:/text.txt");
c = (Test)ser.Deserialize(tr);
tr.Close();

And here pops an error
An unhandled exception of type 'System.InvalidOperationException' occurred in system.xml.dll

Additional information: There is an error in XML document (12, 3).
, why I can`t deserialize an object from that file?

Further question - may I keep different sort of objects in one file? If so, how to check if read object is the one I was looking for?

thank you for any help

how to handle locations of innet control of a user control

arusmemon14-Sep-05 2:37

arusmemon

14-Sep-05 2:37

Hi,
i have developed a user control, when i put the user control with a larger size from its originalone on a form, only the original size is shown, it is like when a picture is shown in a picturebox with property streach set to false.

I want to do streach the user control to the size it is on the form &
i want a lebel to be 8 pixel down fromits top no mater what is its size on the form (i want to control the locations of the internal control)

Can anyone help me

Regards,
Arus

creating control array in runtime

liqnit14-Sep-05 2:33

liqnit

14-Sep-05 2:33

hi im trying to create a number of radiobutton in runtime.

      int i = 0;<br />
while (TempString != null)<br />
{<br />
    if (TempString.Length > 3) <br />
    {<br />
        RadioButton rbNew = new RadioButton ();<br />
        rbNew.Name = (rbNew.Name.ToString() + i.ToString());<br />
        rbNew.Text = TempString;<br />
        rbNew.Visible = true;<br />
        pnVSSProjects.Controls.Add(rbNew);<br />
        <br />
    }<br />
    i++;<br />
    <br />
}

but it only create the first RadioButton and not the others.
please help.
thanks

Have a nice Day

-- modified at 8:37 Wednesday 14th September, 2005

Re: creating control array in runtime

Dave Kreskowiak14-Sep-05 4:51

Dave Kreskowiak

14-Sep-05 4:51

liqnit wrote:
RadioButton rbNew = new RadioButton ();
rbNew.Name = (rbNew.Name.ToString() + i.ToString());
rbNew.Text = TempString;
rbNew.Visible = true;
pnVSSProjects.Controls.Add(rbNew);

You're not setting the Top and Left properties of the controls you're creating to move them around the container they're in. This means that each one is being put in the exact same place, so the first one created is the only one you actually see. All the others are behind it.

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

Re: creating control array in runtime

liqnit17-Sep-05 19:44

liqnit

17-Sep-05 19:44

thanks
it's working great now

Have a nice Day

how to find type of Dll

Anonymous14-Sep-05 2:02

Anonymous

14-Sep-05 2:02

Hi All,

In my application User selects the file which is *.dll by browsing on the System. Now i want to find out this dll is .NET assembly or Com dll.

How should i find out the Dll is Managed dll or unmanaged dll programatically??

Thanks,
TusharM

Re: how to find type of Dll

miah alom14-Sep-05 4:19

miah alom

14-Sep-05 4:19

Try to Load the dll file in a try catch block. You will recieve a System.BadImageFormatException
for unmanaged dll's.

try
{
Assembly.LoadFrom(@"C:\WINDOWS\acb.dll");
}
catch(System.BadImageFormatException ex)
{
MessageBox.Show(ex.Message);
}
catch ( Exception ex )
{
MessageBox.Show(ex.Message);
}

Can you change the protected statusof a file?

Anonymous14-Sep-05 1:46

Anonymous

14-Sep-05 1:46

If i create a file or whatever can i give it a protected status?
Once thats done would it be possible to remove it as well?

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