Check out example codes for "c# listview add item". It will help you in understanding the concepts better.

Code Example 1

ListViewItem it = new ListViewItem();
 listview1.Items.Add(it);

Code Example 2

string[] row = { textBox1.Text, textBox2.Text, textBox3.Text };
        var listViewItem = new ListViewItem(row); 
        listView1.Items.Add(listViewItem);

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