How to create a ForeColor property to your UserControl

Question

2.00/5 (1 vote)

See more:

Dear all,

I am creating a numeric text box, and I want to create 2 properties, NegativeColor and PositiveColor, to let the user chose color to be set for the font when the value is negative or positive.

Can you help me please?

Posted 24-Oct-11 21:41pm

fadi77_net

Updated 24-Oct-11 21:44pm

RaisKazi

v2

Add a Solution

Comments

Sergey Alexandrovich Kryukov 25-Oct-11 3:43am

Why irritating the user with different colors for different values? I bet it would drive most of the crazy.
--SA

OriginalGriff 25-Oct-11 3:46am

No, it's an old standard - negative numbers are often shown in Red, while positive numbers are in Black.
Excel still provides this as a standard option in the number formatting properties.

Sergey Alexandrovich Kryukov 25-Oct-11 3:50am

Aha, this is because so many people still leave in the world when negative numbers were not yet introduced. Who did it? Indians, Arabs. Hm, "standard". You also mention accountant's "()" format for negatives. What a lame!
--SA

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Accepted Answer · 2011-10-24T21:44:00

Solution 1

Try:

VB

Public Property NegativeColor() As Color
	Get
		Return m_NegativeColor
	End Get
	Set
		m_NegativeColor = Value
	End Set
End Property
Private m_NegativeColor As Color

Posted 24-Oct-11 21:44pm

OriginalGriff

Comments

Sergey Alexandrovich Kryukov 25-Oct-11 3:54am

No Griff, such setter will leave BackColor unchanged, if the user assigns negative color when numeric is negative or positive color when it is not. You need to check if the color is changed and also call the method which assigns BackColor (and this property itself calls Invalidate), this way it will work correctly. (I did not vote this time.)
--SA

Sergey Alexandrovich Kryukov · Accepted Answer · 2011-10-24T21:48:00

Just create these two properties. The key here is the property setter method: it should assign an implementing field to a new value, but also assign the property BackColor immediately, based on current numeric value, so the change in your exposed property could be taken into account in rendered color immediately.

Once again, I would strongly advise you to give up the idea: such changing color will irritate the users, if not confuse them.

—SA