How To Change BG Color Of Textbox

Feb 12, 2010

I'm studying chemistry and wanted to make a quick app for studying the periodic table. What I have is 36 text boxes. I have a structure that can hold each of the 36 element's info, and an array with 36 instances of the structure.

Example:
Dim Elements(37) As Element
Structure Element
Dim strSymbol As String
Dim strElementName As String
Dim strNumber As String
[Code] .....

When I mess with it, sometime the text boxes will fill in, but randomly and the comparison between the input text and the info stored in the data structure never compare correctly. 90% of the time the structure data is showing a null.

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I want to change the border color of a textbox. I have tryed to override the onpaint event (setting userpaint to true), but in this case I must control all the painting events of a textbox. So, this isn't a good thing. This seems to work, but the user control has no text property. And I woult like to override the gotfocus and the lostfocus events.

Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Drawing

[code]....

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[code...

When I use this code I get the error "Property 'Chars' is 'ReadOnly'."

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detailed process with the source if available.

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If the TextBox is not empty, I want The border color to remain unchanged.

How do I change the TextBox border color on a certain event?

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Here is the code I wrote:
Public Class Screen
Inherits Windows.Forms.Form
Dim T(1, 2) As TextBox
Dim S(2) As PictureBox
Dim x, i, j As Integer
[Code] .....

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[code].....

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a set of color add into combobox

bttnclick
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base
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[Code]...

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[Code]...

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VB Code:

Dim g As Graphics, Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

g= Me.CreateGraphics
End Sub

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Dim a As String = " objects scanned, "
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[code].....

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