How to reset the minsupp..?

Sin Yee

how to reset the minimum support that the user enter in the RTB? when user want to change the minimum support, they can straight away change from the minimum support RTB and the program can detect and change also..
??
here is my coding:

MinSupp.Clear();

double minsupp = Double.Parse(MinSupp.Text);

double totalsupp = 0.0;

foreach (var r in p)

{

totalsupp += (double)dict1[r];

}

SingleItemValue.Clear();

foreach (var h in p)

{

double supp = (double)dict1[h];

double perc = supp / totalsupp * 100.00;

if (perc >= minsupp)

{

SingleItemValue.AppendText(h + ":" + dict1[h] + "\r\n");

hs1.Add(h);

}

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Vulpes15y ago
If you click on the MinSupp RTB whilst in design mode and then click on the 'lightning bolt' symbol in the Properties Box, it will list the events that are applicable.

If you then double-click on the Leave Event it will open up a skeleton eventhandler which should look like this:

private void MinSupp_Leave(object sender, System.EventArgs e)
{

}
Sin Yee15y ago
where to do this "add the skeleton eventhandler for the Leave event from the VS Properties Box (double click on the name of the event)"???
Vulpes15y ago
The code will be something like this. It's important to add the skeleton eventhandler for the Leave event from the VS Properties Box (double click on the name of the event) to ensure it's wired up properly:

private void MinSupp_Leave(object sender, System.EventArgs e)
{
   double temp = Double.Parse(MinSupp.Text);
   if (temp != minsupp)
   {
   minsupp = temp;
   SomeMethod();
   }
}

private double minsupp; // now a field rather than a local variable

private void SomeMethod()
{
   //...

   MinSupp.Clear();
   /* double minsupp = Double.Parse(MinSupp.Text); // remove this line */
   double totalsupp = 0.0;
   foreach (var r in p)
   {
   totalsupp += (double)dict1[r];
   }

   SingleItemValue.Clear();
   foreach (var h in p)
   {
   double supp = (double)dict1[h];
   double perc = supp / totalsupp * 100.00;
   if (perc >= minsupp) // now using the minsupp field
   {
   SingleItemValue.AppendText(h + ":" + dict1[h] + "\r\n");
   hs1.Add(h);
   }
   }

   // ...
}
Sin Yee15y ago
i dont understand about tht...because i am not familiar with that..u can give me some instruction...?
Vulpes15y ago
I suggest you do two things :-

1. Declare 'minsupp' as a private form level variable rather than as a local variable so it will be accessible throughout the form class.

2. Add an eventhandler for the RTB's Leave event from the VS designer.

In the eventhandler, you'll need to parse the RTB's Text property to a double and, if it's different to what it was before, change the private field to the new value and call the method which does the appropriate calculations for minimum support.