如何清除文本框？

Question

I have a pretty decent background in Java and C++, but I'm struggling to do something trivial in C#. I have two TextBoxes : MessageBox and SenderBox . I want to send the text from SenderBox to MessageBox (which is easy), but I want to clear SenderBox once that is done. The following is basically the code that is fired when you press Enter to send the text:

string temp = SenderBox.Text;
SenderBox.Text = "cleared";
MessageBox.Text = temp;

Most programming languages are somewhat procedural or at least execute in some orderly way. Why does C#/WPF for Windows 8 apps seem to defy this standard? You would expect temp to be set equal to the value of SenderBox , first of all. If you look at the code, temp should not equal "cleared" unless that's what SenderBox contains. At that point (line 1), it doesn't. I tried to create a send(msg) function to dereference the weird string, but that didn't change a thing. The following code runs as expected:

string x = "abc";
string y = x;
y = "123";
MessageBox.Text = x;

Can someone enlighten me? Not sure what's going on here.

Answer 1

If you're not trying to switch the contents of the two boxes, why not just do:

MessageBox.Text = SenderBox.Text;
SenderBox.Text = "cleared";