C#

\begin{equation}
y&=x+z;
m&=[s]^2%4
\end{equation}

{+}{{}{}}{^}{%}

private void button1_Click(object sender, EventArgs e)
    {
    Regex regexWithAllPossible = new Regex(@"([\+\^%{}])");
    string source = @"+  -->   {+}^  -->   {^}%  -->   {%}{  -->   {{}}  -->   {}}";
    string result = regexWithAllPossible.Replace(source, new MatchEvaluator(CheckMatch));
    }
private string CheckMatch(Match m)
    {
    return "{" + m.Value + "}";
    }

Regex regex = new Regex(@"([\+\^%{}])");
string source = @"+  -->   {+}^  -->   {^}%  -->   {%}{  -->   {{}}  -->   {}}";
string result = regex.Replace(source, (m) => "{" + m.Value + "}");

var result = Regex.Replace("+^%{}", @"\+|\^|\%|\{|\}", "{${0}}");

var result = Regex.Replace("+^%{}", @"[\+\^%{}]", "{${0}}");

aspdotnetdev wrote:

@"\+|\^|\%|\{|\}"

public class MyPanel : Panel
{
    public static readonly Size DefaultMaxSize = new Size(20000, 20000);
    protected override Size DefaultMaximumSize
    {
        get { return DefaultMaxSize; }
    }
}

MyPanel myPanel = new MyPanel();
myPanel.Size = myPanel.Size = MyPanel.DefaultMaxSize;
Console.WriteLine(myPanel.Size);

private void radioButton1_KeyPress(object sender, KeyPressEventArgs e)
{
    if (e.KeyChar == 13)
    {
        Yourcontrol.Focus();
    }
}

if(e.KeyCode == Keys.Enter){
   e.Handled = true;//stops the beep/bonk noise
   e.SupressKeyPress = true;//it bypasses the KeyPress event
   
   txtYouNameIt.Focus();//focuses on the control you specify
}

private void Comunal_KeyDownHandler(object sender, System.Windows.Forms.KeyEventArgs e)
{
   if (e.KeyCode == Keys.Enter)
   {
       e.Handled = true;
       // true means go forwards
       this.GetNextControl((Control)sender, true).Focus();
   }
}