Hi,
I have derived my ConsoleTextBox from RichTextBox.
I'm trying to implement a console-like text box with history
capabilities.
My problem is that when I'm trying to append a command, I can't place
the cursor at the end of the text.
### See code below - problem in SetCmdLn() ####
My questions are:
1. How do I place the caret at the end of my new text?
2. why the Length of Text retrieves the
length without the length of the added line?
3. Is there a way to update only a speciffic
line in Lines (in my case its always the last line) without having
to copy all the Lines to a new array of strings?
Thanks a lot!
Udi.
protected override bool IsInputKey(Keys keyData)
{
int lineNo = GetLineFromCharIndex(SelectionStart);
switch (keyData)
{
case Keys.Enter:
{
:
}
case Keys.Up:
{ //user asks for previous history cmd
if (lineNo == Lines.Length - 1)
{
OnArrowUp();
return true;
}
break;
}
case Keys.Down:
{//user asks for next history cmd
:
}
:
}
return base.IsInputKey(keyData);
}
private void OnArrowUp()
{
// Point to previous history cmd while possible
:
SetCmdLn();
}
private void SetCmdLn()
{
string [] tmpTxtMatrix = new string [Lines.Length];
Lines.CopyTo(tmpTxtMatrix, 0);
//Replace last line in console with history value
tmpTxtMatrix[tmpTxtMatrix.Length - 1] = history[historyIdx] as
string;
//Clear();
Lines = tmpTxtMatrix;
//String.Join("\n", tmpTxtMatrix);
//AppendText( String.Join("\n", tmpTxtMatrix));
Select(Text.Length ,0); ######## THIS DOES NOT WORK !!!
########
}
It always sets the caret position BEFORE the last added line.
(As you can see in the commented out lines, I tried manipulating it but
it didn't help.)
