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Windows Database Applications

Windows Database Applications. CIS 341 Chapter 11. Objectives. Declare and reference collections Collection types Data Structures Object collection Items collection of a list box. Referencing Collection Items. DsStoreSales1.Tables(“Stores”) DsStoreSales1.Tables(0). Collection Class.

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Windows Database Applications

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  1. Windows Database Applications CIS 341 Chapter 11

  2. Objectives • Declare and reference collections • Collection types • Data Structures • Object collection • Items collection of a list box

  3. Referencing Collection Items DsStoreSales1.Tables(“Stores”) DsStoreSales1.Tables(0)

  4. Collection Class

  5. Stacks mstkList.Push(strItem) strItem = mstkList.Peek() mstkList.Pop()

  6. Queue mqueList.Enqueue(strItem) strItem = mqueList.Peek() mqueList.Dequeue()

  7. Hash Tables Strkey = strItem.GetHashCode.ToString() mhshTable.Add(strKey, strItem) strItem = lstLanguages.SelectedItem.ToString() strKey = strItem.GetHashCode mhshTable.Remove(strKey) For Each strItem In mhshTable.Values lstLanguages.Items.Add(strItem) Next

  8. Sorted List strKey = strItem.Substring(0,3) msrtList.Add(strKey, strItem) lstLanguages.Items.Clear() For each strItem in msrtList.Values lstLanguages.Items.Add(strItem) Next

  9. Collection of Objects Dim objStudent As New Student(txtName.Text, CDec(txtGPA.Text)) mcolStudents.Add(strKey, objStudent) objStudent = CType(mcolStudents.Item(strKey), Student)

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