Can a Multi line text box in c# hide some text elements and show when you click on a text box please see example?

Question

above are what details to be shown when you click the check box and what is to be hidden when its not checked. I have no clue how to do this and I am sure its simple. But any help would be appreciated as I am pretty new to this. Thanks

Answer 1

Assuming you are using a RichTextBox, you save all the lines to a variable of type array of strings, and you save the lines that contain 'Deposit" in an other variable of the same type.

public partial class Form1 : Form
{
    string[] LinesWithDetails;
    string[] LinesWithOutDetails;

    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        LinesWithDetails = richTextBox1.Lines;
        LinesWithOutDetails = richTextBox1.Lines.Where(l => l.Contains("Deposit")).ToArray();

        HideDetails();
    }

    private void checkBox1_CheckedChanged(object sender, EventArgs e)
    {
        if (checkBox1.Checked)
            ShowDetails();
        else
            HideDetails();
    }

    private void ShowDetails()
    {
        richTextBox1.Lines = LinesWithDetails;
    }
    private void HideDetails()
    {
        richTextBox1.Lines = LinesWithOutDetails;
    }


}