How to change the color of second line in RichText Box? - C# Discussion Boards

Re: Getting the type from a string, any magic for this in C#?

4-Apr-09 23:34

Hi,

have a look at the Activator class and its CreateInstance method.

Smile | :)

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ioctl514-Apr-09 23:38

ioctl51

4-Apr-09 23:38

Awesome! many thanks, just what i was looking for

Re: Getting the type from a string, any magic for this in C#?

Steve Echols4-Apr-09 23:59

Steve Echols

4-Apr-09 23:59

This will still just get you an object, so if you want to do anything with it, you'll have to cast it to the type you want, which might be fine for what your doing?

- S
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A post a day, keeps the white coats away!

Re: Getting the type from a string, any magic for this in C#?

PIEBALDconsult5-Apr-09 4:29

Re: Getting the type from a string, any magic for this in C#?

5-Apr-09 4:29

A) This may be a good place to use var.

B) Accessing Reflection can be time-consuming, so I prefer to cache the results.

C) Typically, in situations like this, I use a Dictionary. Here I might suggest a Dictionary<string,System.Reflection.ConstructorInfo>. Populate it with the expected/allowed types your application should support. Then something like:

var x = dic [ somestring ].Invoke() ;

would invoke the constructor and return an instance of whatever type was requested (or fail). However, it's Sunday morning and I'm still on my first cup of coffee, so I don't expect the above syntax to be correct (I'm pretty sure it isn't, but it should communicate the concept well enough).

D) If you want to support types that aren't known at compile time, you will need to learn how to dynamically load assemblies. There are several articles on that here.

Luc Pattyn5-Apr-09 4:54

Re: Getting the type from a string, any magic for this in C#?

5-Apr-09 4:54

Real programmers start lettering with @) not A)

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

PIEBALDconsult5-Apr-09 5:04

Re: Getting the type from a string, any magic for this in C#?

5-Apr-09 5:04

A is just a meaningless label. Maybe I'll use GUIDs next time.

PIEBALDconsult5-Apr-09 5:24

How to change the color of second line in RichText Box?

5-Apr-09 5:24

Perhaps my Parsomatic[^] may be of help?

Lijo Rajan4-Apr-09 22:23

Lijo Rajan

4-Apr-09 22:23

Hi all,

Can any one please tell me that how can i change the color of second line in rich text box?
My requirement is first line in richtext box should be blue and second line should be red.

Thanks in advance
Lijo

Re: How to change the color of second line in RichText Box?

Xmen Real 4-Apr-09 23:11

Xmen Real

4-Apr-09 23:11

select the text and change selection color
e.g.

RTB.SelectionColor = Color.Red;

TVMU^P[[IGIOQHG^JSH`A#@`RFJ\c^JPL>;"[,*/|+&WLEZGc`AFXc!L
%^]*IRXD#@GKCQ`R\^SF_WcHbORY87֦ʻ6ϣN8ȤBcRAV\Z^&SU~%CSWQ@#2
W_AD`EPABIKRDFVS)EVLQK)JKQUFK[M`UKs*$GwU#QDXBER@CBN%
R0~53%eYrd8mt^7Z6]iTF+(EWfJ9zaK-iTV.C\y<pjxsg-b$f4ia>

-----------------------------------------------
128 bit encrypted signature, crack if you can

Re: How to change the color of second line in RichText Box?

Bit_flipper6-Feb-10 7:42

Bit_flipper

6-Feb-10 7:42

First you need to change the color of the text before putting it in the rtb.

rtb.SelectionColor = System.Drawing.Color.Red;
rtb.AppendText(outText);

changing other attributes
rtb.SelectionColor = System.Drawing.Color.Blue;
System.Drawing.Font fBold = new System.Drawing.Font("Courier New", 10, fontBold);
rtb.SelectionFont = fBold;
rtb.AppendText(outText);

good luck

problem in using namespaces

yogesh_softworld1234-Apr-09 22:07

yogesh_softworld123

4-Apr-09 22:07

Dear sir,
there are two projects in single dotnet IDE. every project included in separate namespaces.
i want to use one project reference to another project or namespace .
how can i do this???
i tried to use through "using " keyword , but it is not working and giving runtime error.

like this:
The type or namespace name 'TechWayHosting' could not be found (are you missing a using directive or an assembly reference?) D:\Yogesh_Backup\yogesh\New Folder\TechWayHosting-1st April 2009\FTPLibrary\User Controls\FileBrowserControl.cs FTPLibrary

yogesh

Re: problem in using namespaces

Luc Pattyn4-Apr-09 22:49

Re: problem in using namespaces

4-Apr-09 22:49

yogesh_softworld123 wrote:
are you missing a using directive or an assembly reference?

You have a using directive, so what could be missing?
right-click on the project in the solution pane and fix it.

yogesh_softworld123 wrote:
giving runtime error

this is a compile-time error, not a run-time error. Your app is not running yet.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

ramz_g8-Apr-09 19:49

ramz_g

8-Apr-09 19:49

Hi,
You used the "using" directive, which is fine... But before that did u add the reference of the other project in "Add Reference" of your current project...?

problem to importing DLL files

cppwxwidgetsss4-Apr-09 21:35

cppwxwidgetsss

4-Apr-09 21:35

i have a form, i want to change the time and/or date of the system
and now i have found the following code but it just generate errors
i don't know what is exactly the problem
it is not a run time error, it is a compilation error
i am using C# in visual studio 2008
here is the error message :

"Error 39  Attribute 'StructLayout' is not valid on this declaration type. It is only valid on 'class, struct' declarations.   D:\visual studio projects\firstCSharp\firstCSharp\settings.cs   16  12  firstCSharp"

here is the code

public partial class settings : Form
    {
          [StructLayout(LayoutKind.Sequential)]
        [DllImport("kernel32.dll", EntryPoint = "SetSystemTime", SetLastError = true)]

        private static extern bool SetSystemTime(ref MyDateTime st);



        [DllImport("kernel32.dll", EntryPoint = "GetSystemTime", SetLastError = true)]

        private extern static void GetSystemTime(ref MyDateTime sysTime);

please tell me how can i handle this error
thank you everybody in Advance

Re: problem to importing DLL files

Luc Pattyn4-Apr-09 22:54

Re: problem to importing DLL files

4-Apr-09 22:54

cppwxwidgetsss wrote:
Attribute 'StructLayout' is not valid on this declaration type

Now how about this: a StructLayout tells something about the layout of a struct you define.
Throw it away.

BTW: an app should not mess around with the system settings, such as Regional Settings, current date/time, etc.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

PIEBALDconsult5-Apr-09 4:14

Separator Line on form.....help guys!

5-Apr-09 4:14

Luc Pattyn wrote:
an app should not mess around with the system settings, such as Regional Settings, current date/time, etc.

Hear hear!

Rajdeep.NET is BACK4-Apr-09 21:21

Rajdeep.NET is BACK

4-Apr-09 21:21

Hello there,

I am having a little problem in implementing the separator line in Windows Form. I have taken a label control in my form and have set its height to 2 pixels and borderStyle to fixed3D and set the AutoSize property of the form to False. However, although a Bevel line is created in place of the label, but the line is not Wide. Its only a few centimetres wide. I have set the label wide property to 100-150 but no changes had taken place. Note that I am not implementing any coding here. I am just setting the property of the label. Please tell me, how can I widen the label (now bevel line) on my form according to my wish.

Your help will really be appreciated,
Thanx....
Rajdeep.NET Sigh | :sigh:

Harvey Saayman4-Apr-09 22:02

Harvey Saayman

4-Apr-09 22:02

Dude, just paint a separator

In the OnPaint event handler of the form do the following

private void Form1_Paint(object sender, PaintEventArgs e)
{
    e.Graphics.DrawLine(new Pen(Brushes.Gray), X1, Y1, X2, Y2);
}

Where X1, Y1, X2, Y2 are the coordinates were the line will be drawn

Welcome to the world of GDI, have fun Smile | :)

Harvey Saayman - South Africa
Software Developer
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Rajdeep.NET is BACK4-Apr-09 22:13

Rajdeep.NET is BACK

4-Apr-09 22:13

Just a Minute!

How can I paint a separator? U said to pase the code in the OpPaint Event Handler, But I did not find any control in the toolbox like the OnPaint!

Help please,
this project's gotta do with my life and death....
plz plz plz help me....
Rajdeep.NET Sigh | :sigh:

Rajdeep.NET is BACK4-Apr-09 22:16

Rajdeep.NET is BACK

4-Apr-09 22:16

Just a Minute!

How can I paint a separator? U said to paste the code in the OpPaint Event Handler, But I did not find any control in the toolbox like the OnPaint!

Help please,
this project's gotta do with my life and death....
plz plz plz help me....
Rajdeep.NET Sigh | :sigh:

Luc Pattyn4-Apr-09 22:59

4-Apr-09 22:59

Add a Panel, set its height, anchor it left and right, and set some BackColor.

And please go buy a tutorial book on C# and study that; in less than a week you would have learned ten times more than you have last week by asking all kinds of elementary questions.

Smile | :)

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