How to disable RichTextBox without it's text background color fading

[Jamescd]

In C#, When set property 'Enabled' to 'false', the text background turn to gray How to prevent it?

[oarrocha]

Set the

BackColor = SystemColors.ControlLightLight;

That will fix the backcolor. I also recommend to put:

Enable = True
ReadOnly = True

This will allow you to select the text and move the scrollbars (when necessary).

[Jamescd]

Thanks, oarrocha

I want RichTextBox:
1. do not respond to user interaction
2. keep original Forecolor and Backcolor

After "Enabled = false", "BackColor = SystemColors.ControlLightLight" will not work anymore.

[oarrocha]

Thanks, oarrocha

I want RichTextBox:
1. do not respond to user interaction
2. keep original Forecolor and Backcolor

After "Enabled = false", "BackColor = SystemColors.ControlLightLight" will not work anymore.

You are right... with Enabled = false, it won't work as you want it.

Here is an example, where I dropped a RichTextBox and a Button, and set the button1.Click Event and richTextVBox1.Enter with this code:
private void button1_Click(object sender, EventArgs e)
{
richTextBox1.BackColor = SystemColors.ControlLightLight;
richTextBox1.ReadOnly = !richTextBox1.ReadOnly;
}
private void richTextBox1_Enter(object sender, EventArgs e)
{
RichTextBox obj = (RichTextBox)sender;
if (obj.ReadOnly) GetNextControl(obj, true).Focus();
}

If the richtextbox doesn't has scrollbars, it works like you want it, otherwise, the user has control of the scroll bars

[SammyB]

Thanks, oarrocha

I want RichTextBox:
1. do not respond to user interaction
2. keep original Forecolor and Backcolor

After "Enabled = false", "BackColor = SystemColors.ControlLightLight" will not work anymore.

I think that you should go with ReadOnly=True. Then you can save the current background and restore it afterwards.

        Dim saveColor As Color
        saveColor = RtbEditor.BackColor
        RtbEditor.ReadOnly = True
        RtbEditor.BackColor = saveColor

It's strange that ReadOnly and Enable behave differently. You might also create a control derived from the RTB & override whatever causes the grey. Good luck.

[Jamescd]

oarrocha, SammyB, Thank you guys.

There may be a little misunderstanding. Actually, I want the RichTextBox to be inactive, ie. doesn't control the area where it is; doesn't get focus; keep this original forecolor and backcolor. I used "Enabled=false", but the backcolor .....

[SammyB]

oarrocha, SammyB, Thank you guys.

There may be a little misunderstanding. Actually, I want the RichTextBox to be inactive, ie. doesn't control the area where it is; doesn't get focus; keep this original forecolor and backcolor. I used "Enabled=false", but the backcolor .....

I think we understood what you wanted, but without creating a custom control, we were unable to do it. However, Oarrocha discovered it was possible with ReadOnly. The little bit gained with Enable just doesn't seem worth the pain of writing a custom control. --Sam

[Jamescd]

Sam: I appreciate what you recommended, By override, the problem has been fixed. Thank you so much

[SammyB]

Sam: I appreciate what you recommended, By override, the problem has been fixed. Thank you so much

Wow! I'm impressed! What did you have to overide?

[Jamescd]

Sam, It's OnEnabledChanged

[manikanta123]

Jamescd Can u explain clearly how u solved that rtb backround dull to normal color