I have a chat application that is based on a Form and 2 richTextBoxes !
richTextBox1
is used to display all conversation
richTextBox_TextToSend
is used to type in the message to send
when a user types a message and hit the enter button, the entered text will appear in richTextBox1
private void button1_Click(object sender, EventArgs e)
{
// insert message to database
if(richTextBox_TextToSend.TextLength>0) {
string txt = richTextBox_TextToSend.Text;
// send the typed message
sendMessage(from,to,task_id,txt);
// show the typed text in the richTextBox1
richTextBox1.Text += from+": "+richTextBox_TextToSend.Text+"\n";
richTextBox_TextToSend.Clear();
}
}
The variable from
of type string holds the name of who send the message (the user using the application)
How to display the name only in bold and other text in normal font style so after typing the message, I see
Chakib Yousfi : Hello....
instead of
Chakib Yousfi : Hello...
Any help would be highly appreciated .
Use this code :
private void button1_Click(object sender, EventArgs e)
{
// insert message to database
if(richTextBox_TextToSend.TextLength>0) {
string txt = richTextBox_TextToSend.Text;
int start = richTextBox1.TextLength;
string newMessage = from + ": " + richTextBox_TextToSend.Text + Environment.NewLine;
// send the typed message
sendMessage(from,to,task_id,txt);
// show the typed text in the richTextBox1
richTextBox1.AppendText(newMessage);
richTextBox_TextToSend.Clear();
richTextBox1.Select(start, from.Length);
richTextBox1.SelectionFont = New Font(richTextBox1.Font, FontStyle.Bold);
}
}
First, you should select the text you want to make bold:
richTextBox1.SelectionStart = 0;
richTextBox1.SelectionLength = 13;
And then you can define the style for the selected text:
richTextBox1.SelectionFont = new Font(richTextBox1.Font, FontStyle.Bold);
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