What is the best approach to assign the visibility for multiple controls

Question

OK so i'm trying to clean up my code because it is a mess and what i have is 25 richtext boxes and i want to put their .Visible variable into an array and have a for statement go through and make each false so that the text box doesn't show up what i have tried hasn't worked and i can't figure it out what i have is. ``` bool[] box = new bool[25]; box[0] = richTextBox1.Visible; box[1] = richTextBox2.Visible; box[2] = richTextBox3.Visible; box[3] = richTextBox4.Visible; box[4] = richTextBox5.Visible; box[5] = richTextBox6.Visible; box[6] = richTextBox7.Visible; box[7] = richTextBox8.Visible; box[5] = richTextBox6.Visible; box[6] = richTextBox7.Visible; box[7] = richTextBox8.Visible; box[8] = richTextBox9.Visible; box[9] = richTextBox10.Visible; box[10] = richTextBox11.Visible; box[11] = richTextBox12.Visible; box[12] = richTextBox13.Visible; box[13] = richTextBox14.Visible; box[14] = richTextBox15.Visible; box[15] = richTextBox16.Visible; box[16] = richTextBox17.Visible; box[17] = richT…

Accepted Answer

You canot change the `bool` in the array and expect that that changes the `Visible` state of the TextBoxes.

You have to change that property. Therefore you either have to store these controls in a collection or use a different approach: If they are in the same container control (like `Form`, `GroupBox`, `Panel` etc.) you could use `Enumerable.OfType`.

For example:

```
var allRichTextBoxes = this.Controls.OfType<RichTextBox>()
    .Where(txt => txt.Name.StartsWith("richTextBox"));
foreach(var rtb in allRichTextBoxes)
    rtb.Visible = false;
```

What is the best approach to assign the visibility for multiple controls

Solution

Problem