Array.CreateInstance Method (Type, Int32)

Parameters

• elementType
  Type: System.Type
  The Type of the Array to create.

• length
  Type: System.Int32
  The size of the Array to create.

Return Value

Type: System.Array
A new one-dimensional Array of the specified Type with the specified length, using zero-based indexing.

Public Class Example

   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)

      ' Creates and initializes a one-dimensional Array of type Int32.
      Dim my1DArray As Array = Array.CreateInstance(GetType(Int32), 5)
      Dim i As Integer
      For i = my1DArray.GetLowerBound(0) To my1DArray.GetUpperBound(0)
         my1DArray.SetValue(i + 1, i)
      Next i
      ' Displays the values of the Array.
      outputBlock.Text &= "The one-dimensional Array contains the " _
         + "following values:" & vbCrLf
      PrintValues(outputBlock, my1DArray)

   End Sub

   Public Shared Sub PrintValues(ByVal outputBlock As System.Windows.Controls.TextBlock, ByVal myArr As Array)
      Dim myEnumerator As System.Collections.IEnumerator = _
         myArr.GetEnumerator()
      Dim i As Integer = 0
      Dim cols As Integer = myArr.GetLength((myArr.Rank - 1))
      While myEnumerator.MoveNext()
         If i < cols Then
            i += 1
         Else
            outputBlock.Text &= vbCrLf
            i = 1
         End If
         outputBlock.Text &= String.Format(ControlChars.Tab + "{0}", myEnumerator.Current)
      End While
      outputBlock.Text &= vbCrLf
   End Sub
End Class

' This code produces the following output.
' 
' The one-dimensional Array contains the following values:
'     1    2    3    4    5 

using System;
public class Example
{

   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {

      // Creates and initializes a one-dimensional Array of type Int32.
      Array my1DArray = Array.CreateInstance(typeof(Int32), 5);
      for (int i = my1DArray.GetLowerBound(0); i <= my1DArray.GetUpperBound(0); i++)
         my1DArray.SetValue(i + 1, i);

      // Displays the values of the Array.
      outputBlock.Text += "The one-dimensional Array contains the following values:" + "\n";
      PrintValues(outputBlock, my1DArray);
   }


   public static void PrintValues(System.Windows.Controls.TextBlock outputBlock, Array myArr)
   {
      System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
      int i = 0;
      int cols = myArr.GetLength(myArr.Rank - 1);
      while (myEnumerator.MoveNext())
      {
         if (i < cols)
         {
            i++;
         }
         else
         {
            outputBlock.Text += "\n";
            i = 1;
         }
         outputBlock.Text += String.Format("\t{0}", myEnumerator.Current);
      }
      outputBlock.Text += "\n";
   }
}
/*
This code produces the following output.

The one-dimensional Array contains the following values:
    1    2    3    4    5
*/