Logging class using delegates (NullReferenceException)
- by Leroy Jenkins
I have created a small application but I would now like to incorporate some type of logging that can be viewed via listbox. The source of the data can be sent from any number of places. I have created a new logging class that will pass in a delegate. I think Im close to a solution but Im receiving a NullReferenceException and I don’t know the proper solution. Here is an example of what Im trying to do:
Class1 where the inbound streaming data is received.
class myClass
{
OtherClass otherClass = new OtherClass();
otherClass.SendSomeText(myString);
}
Logging Class
class OtherClass
{
public delegate void TextToBox(string s);
TextToBox textToBox;
Public OtherClass()
{
}
public OtherClass(TextToBox ttb)
{
textToBox = ttb;
}
public void SendSomeText(string foo)
{
textToBox(foo);
}
}
The Form
public partial class MainForm : Form
{
OtherClass otherClass;
public MainForm()
{
InitializeComponent();
otherClass = new OtherClass(this.TextToBox);
}
public void TextToBox(string pString)
{
listBox1.Items.Add(pString);
}
}
Whenever I receive data in myClass, its throwing an error. Any help you could give would be appreciated.
