C#: How can I make textarea that accepts only some specific words?

Question

How can I make a TextArea that accepts only the words I have already set with C# on Visual studio.

I'm a beginner in programming.

update:

what (-3) about? like I said I'm a beginner, trying to build android game with c#. until now just do some mistakes.

this website little complex to handle with but I will get used to it :) and my english poor

thank you all.

Your answer is here https://stackoverflow.com/help/how-to-ask — Salah Akbari, Oct 12 '17 at 08:39
If you looking a solution for web. It's duplicate please check this link : https://stackoverflow.com/questions/16647404/javascript-function-to-enter-only-alphabets-on-keypress — arslanaybars, Oct 12 '17 at 08:52
@green please elaborate more on your question, please add some sample code on what you have done so far regarding this problem, with that i can be able to help — indago, Oct 12 '17 at 12:13

Metin Atalay · Accepted Answer · 2017-10-12T10:39:13.320

Use TextBox and add TextChanged event on your tool

private void textBox1_TextChanged(object sender, EventArgs e)
{
    if (!System.Text.RegularExpressions.Regex.IsMatch(textBox1.Text, "^[a-zA-Z]"))
    {
        MessageBox.Show("This textbox accepts only alphabetical characters");
        textBox1.Text.Remove(textBox1.Text.Length - 1);
    }
}

More Info

textBox1.TextChanged += new TextChangedEventHandler(textBox1_TextChanged);
private void textBox1_TextChanged(object sender, EventArgs e)
{
    Regex regex = new Regex(@"[^0-9^+^\-^\/^\*^\(^\)]");
    MatchCollection matches = regex.Matches(textBox1.Text);
    if (matches.Count > 0) {
       //tell the user
    }
}

private void textBox1_TextChanged(object sender, EventArgs e)
    {
        string yourWord = "mouse";
        if (textBox1_Text.Text.Contains(yourWord))
        {
            textBox1_Text.Text.Replace(yourWord, "");
        }
    }

Thank you, but where should I put my words. example of accepted words: hand, mouse, floor....etc. and unacceptable Inappropriate Words, Spelling mistakes. — green zone, Oct 12 '17 at 09:40

C#: How can I make textarea that accepts only some specific words?

1 Answers1