In my little program I have a richtextbox and a button. When clicking the button this code is run and when I debug I see that my in the richtextbox entered text is indeed in the txt variable. But when I for example enters 'hej' the first if statement is skipped, why txt = hej so txt=="hej" ought to be true! But isn't.
private
void Button_Click(Object sender, System.EventArgs e){
String txt = new String();txt = richTextBox.get_Text();
if (txt == "hej") Button.set_Text("OK"); else if (txt == "q") Application.Exit(); else{
Button.set_Text(richTextBox.get_Text());}
}
Why is these text comparisons not working
Angel Lee
Hi Jan Friberg,
You can refer to the below link for the operators behaviour.
http://msdn2.microsoft.com/en-us/library/ms177697(VS.80).aspx
You can use read the below link for your purpose.
http://msdn2.microsoft.com/en-us/library/ms177895(VS.80).aspx
Thanks,
P.Shivaram.
Ashwin11557
To compare two Strings please use Equals method of String class.
Above code should be
if (txt.Equals("hej"))
hackinfool
String is an object to use == would only compare memory address locations, which cannot equal. If you use the .equals() method for the string you then compare the string values of the object.
this is how it should look.
private void Button_Click(Object sender, System.EventArgs e)
{
String txt = new String();
txt = richTextBox.get_Text();
if (txt.equals( "hej"));
Button.set_Text("OK");
else if (txt.equals("q"));
Application.Exit();
else
{
Button.set_Text(richTextBox.get_Text());}
}