[VB.NET] Very Simple TextBox Problem

Im having a problem with this code:

Code:

---

TextBox1.Text = (TextBox1.Text + "hello")

---

I want it do add "Hello" when someone clicks a button that changes the text of TextBox1. Im doing something wrong as the program crashes. What am i doing wrong?

Make sure option strict is on. Try this.

Code:

---

TextBox1.Text &= "hello"

---

Very Simple, and easy to fix:

Code:

---

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        TextBox1.Text += "hello"
    End Sub

---

That should do it!:D

Quote:

---

Originally Posted by CoderKid

Very Simple, and easy to fix:

Code:

---

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        TextBox1.Text += "hello"
    End Sub

---

That should do it!:D

---

Generally when adding "plus" together we use &= as wild_bill showed. Not +=. += is generally used for integers.

You could also, to make the program more advanced, add another textbox that allows the user to choose his own text to be inputted into the textbox1:

Code:

---

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Message As String = TextBox2.Text   
TextBox1.Text += " " & Message
TextBox2.Text = " "
    End Sub

---

That is just a more advanced way of doing it. Basically, it just gets the text in TextBox2 by declaring a variable, and that variable is the text added to TextBox1.

Good luck!

Quote:

---

Originally Posted by ident

Generally when adding "plus" together we use &= as wild_bill showed. Not +=. += is generally used for integers.

---

You're right....I'm just so used to using the plus sign. Maybe I should start using the & sign...

Thanks for your insights!

I'm pretty sure I originally used AND in VB3... when I updated to VB5, It didn't like AND anymore and & was the next logical choice...

I'm also pretty sure that VB3 didn't like using +... so I just learned how to do it by default.

Ok, i finally managed. Thanks guys for all the help!