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Using String Lengths
VB 2008, VB 2010
Useful for finding parts of strings and counting characters.
Originally on my site: [URL="http://vb-board.com"]Using String Lengths[/URL] Working with lengths of strings can come in handy very often. If you need to find how long a string is you can, or if you need to break a string down into parts, you can. 1. Open a new project 2. Add one textbox and Four buttons (excessive but I am breaking each thing down) 3. Name buttons (text AND name) button1 = btnCountChars button2 = btnFirstThree button3 = btnSecondThree button4 = btnLastThree 4. Double click your first button and add this [code] Dim strLengthDemo As String = TextBox1.Text MessageBox.Show(strlengthdemo.Length.ToString & " characters")[/code] -This code will show the length of strLengthDemo. You add the ToString part because integers could be added to the textbox. 5. Double click your second button and add this [code] Dim strLengthDemo As String = TextBox1.Text MessageBox.Show(strLengthDemo.Substring(0, 3))[/code] -This is giving visual basic a starting point and how many characters to grab. -This will get the first three characters in your textbox 6. Double click your third button and add this [code] Dim strLengthDemo As String = TextBox1.Text MessageBox.Show(strLengthDemo.Substring(3, 3))[/code] -This will start after the third character and grab 3 more and display them within a messagebox 7. Double click your fourth button and add this [code] Dim strLengthDemo As String = TextBox1.Text MessageBox.Show(strLengthDemo.Substring(strLengthDemo.Lengthâ?"3))[/code] -This tells visual basic to get the last three characters of your string. 8. Run your program (F5) and type in a 9 letter word. Or just 9 letters. Click each button to see how it works! I will keep thinking of more beginner tuts soon enough. So keep waiting for them if you think I am helping.
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