List boxes: List box controls help to show the list of items which enables the user to choose an item from the list. The user may choose one of the items from the list, causing the item to appear selected at runtime. The selected items will be displayed on ListBox control. Get the items from ListBox control: The item which is selected by user from ListBox is stored into ListBox’s SelectedItem property. Steps to determine the selected item in Listbox: If anyone tries to get the value when ListBox’s SelectedItem is empty, then it will occur with an exception. Always ensure that item is selected before reading an item in the SelectedItem. The items stored in ListBox with index value. This is done by “SelectedIndex” property. The item index is stored into SelectedIndex property. The index is a number to determine the position of Items in ListBox. If first item means index value is “0”, second means “1”, and so on. If there is no item in ListBox, then the index value is set to “-1”. The following example code checks whether the SelectedIndex property is “-1” or not. if(courseListBox.SelectionIndex != -1) { selectedProduct = productListBox.SelectedItem.ToString(); }

Question

This battle room is focused on entry level tasks for a network analyst where you will be given trials and reconnaissance, sensor tuning, log aggregation, SIEM queries, and network analysis. For this week’s project, complete the following tasks: From your Project Ares portal, LOG IN Click on LAUNCH GAME. Select the region NORTH AMERICA Click on Battle School Under the BATTLE SCHOOL pop-up window, click on START TRAINING. Under the BATTLE ROOMS tile, click on ENTER. Under the NETWORK ANALYST tile, click on PLAY. Wait for the Battle Room to load. While loading, the BATTLE ROOM button will display red. Once the Battle Room is loaded, the BATTLE ROOM button will turn yellow and the center of the disk display will indicate CONNECTED. Click on the BATTLE ROOM button to enter the Battle Room. Below the TASKS folder, make sure you click on INSTRUCTIONS to download the Network Analyst Fundamentals material. In the Battle Room, under the TASKS menu select task INTRUSION DETECTION. Complete…

Answer 1

Question

Chapter 4, Problem 9AW

Program Plan Intro

List boxes:

List box controls help to show the list of items which enables the user to choose an item from the list.

The user may choose one of the items from the list, causing the item to appear selected at runtime.

The selected items will be displayed on ListBox control.

Get the items from ListBox control:

The item which is selected by user from ListBox is stored into ListBox’s SelectedItem property.

Steps to determine the selected item in Listbox:

If anyone tries to get the value when ListBox’s SelectedItem is empty, then it will occur with an exception.

Always ensure that item is selected before reading an item in the SelectedItem. The items stored in ListBox with index value.

This is done by “SelectedIndex” property.

The item index is stored into SelectedIndex property.

The index is a number to determine the position of Items in ListBox.

If first item means index value is “0”, second means “1”, and so on. If there is no item in ListBox, then the index value is set to “-1”.

The following example code checks whether the SelectedIndex property is “-1” or not.

if(courseListBox.SelectionIndex != -1)

{

selectedProduct = productListBox.SelectedItem.ToString();

}

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