'Adding new line of data to TextBox

I'm doing a chat client, and currently I have a button that will display data to a multi-line textbox when clicked. Is this the only way to add data to the multi-line textbox? I feel this is extremely inefficient, because if the conversation gets really long the string will get really long as well.

private void button1_Click(object sender, EventArgs e)
        {
            string sent = chatBox.Text;
            displayBox.Text += sent + "\r\n";

        }
c++sharp.netwinformsuser-interfacetextbox


Solution 1:[1]

Following are the ways

  1. From the code (the way you have mentioned) ->

    displayBox.Text += sent + "\r\n";

    or

    displayBox.Text += sent + Environment.NewLine;

  2. From the UI
    a) WPF

    Set TextWrapping="Wrap" and AcceptsReturn="True"

    Press Enter key to the textbox and new line will be created

    b) Winform text box 

    Set TextBox.MultiLine and TextBox.AcceptsReturn to true

Solution 2:[2]

I find this method saves a lot of typing, and prevents a lot of typos.

string nl = "\r\n";

txtOutput.Text = "First line" + nl + "Second line" + nl + "Third line";

Solution 3:[3]

Because you haven't specified what front end (GUI technology) you're using it would be hard to make a specific recommendation. In WPF you could create a listbox and for each new line of chat add a new listboxitem to the end of the collection. This link provides some suggestions as to how you may achieve the same result in a winforms environment.

Solution 4:[4]

C# - serialData is ReceivedEventHandler in TextBox.

SerialPort sData = sender as SerialPort;
string recvData = sData.ReadLine();

serialData.Invoke(new Action(() => serialData.Text = String.Concat(recvData)));

Now Visual Studio drops my lines. TextBox, of course, had all the correct options on.

Serial:

Serial.print(rnd);
Serial.( '\n' );  //carriage return

Solution 5:[5]

I use this function to keep newest at top:

WriteLog("hello1");
WriteLog("hello2");
WriteLog("hello3");


public void WriteLog(string text)
{
    var last = txtLog.Text;
    txtLog.Text = DateTime.Now.ToString("G") + ": " + text;
    txtLog.AppendText(Environment.NewLine);
    txtLog.AppendText(last);            
}

Will output this:

enter image description here

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Tilak
Solution 2 DanKuz
Solution 3 alan
Solution 4 Acapulco
Solution 5 kuhi

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