Array.CreateInstance Method (Type, array<Int32[])

Parameters

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

• lengths
  Type: array<System.Int32[]
  An array of 32-bit integers that represent the size of each dimension of the Array to create.

Return Value

Type: System.Array
A new multidimensional Array of the specified Type with the specified length for each dimension, using zero-based indexing.

Public Class Example

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

      ' Creates and initializes a multidimensional Array of type String.
      Dim myLengthsArray() As Integer = {2, 3, 4, 5}
      Dim my4DArray As Array = Array.CreateInstance(GetType(String), myLengthsArray)
      Dim i, j, k, l As Integer
      Dim myIndicesArray() As Integer
      For i = my4DArray.GetLowerBound(0) To my4DArray.GetUpperBound(0)
         For j = my4DArray.GetLowerBound(1) To my4DArray.GetUpperBound(1)
            For k = my4DArray.GetLowerBound(2) To my4DArray.GetUpperBound(2)
               For l = my4DArray.GetLowerBound(3) To my4DArray.GetUpperBound(3)
                  myIndicesArray = New Integer() {i, j, k, l}
                  my4DArray.SetValue(Convert.ToString(i) + j.ToString() _
                     + k.ToString() + l.ToString(), myIndicesArray)
               Next l
            Next k
         Next j
      Next i

      ' Displays the values of the Array.
      outputBlock.Text &= "The four-dimensional Array contains the following values:" & vbCrLf
      PrintValues(outputBlock, my4DArray)
   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 four-dimensional Array contains the following values:
'     0000    0001    0002    0003    0004
'     0010    0011    0012    0013    0014
'     0020    0021    0022    0023    0024
'     0030    0031    0032    0033    0034
'     0100    0101    0102    0103    0104
'     0110    0111    0112    0113    0114
'     0120    0121    0122    0123    0124
'     0130    0131    0132    0133    0134
'     0200    0201    0202    0203    0204
'     0210    0211    0212    0213    0214
'     0220    0221    0222    0223    0224
'     0230    0231    0232    0233    0234
'     1000    1001    1002    1003    1004
'     1010    1011    1012    1013    1014
'     1020    1021    1022    1023    1024
'     1030    1031    1032    1033    1034
'     1100    1101    1102    1103    1104
'    1110    1111    1112    1113    1114
'     1120    1121    1122    1123    1124
'     1130    1131    1132    1133    1134
'     1200    1201    1202    1203    1204
'     1210    1211    1212    1213    1214
'     1220    1221    1222    1223    1224
'     1230    1231    1232    1233    1234

using System;
public class Example
{

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

      // Creates and initializes a multidimensional Array of type String.
      int[] myLengthsArray = new int[4] { 2, 3, 4, 5 };
      Array my4DArray = Array.CreateInstance(typeof(String), myLengthsArray);
      for (int i = my4DArray.GetLowerBound(0); i <= my4DArray.GetUpperBound(0); i++)
         for (int j = my4DArray.GetLowerBound(1); j <= my4DArray.GetUpperBound(1); j++)
            for (int k = my4DArray.GetLowerBound(2); k <= my4DArray.GetUpperBound(2); k++)
               for (int l = my4DArray.GetLowerBound(3); l <= my4DArray.GetUpperBound(3); l++)
               {
                  int[] myIndicesArray = new int[4] { i, j, k, l };
                  my4DArray.SetValue(Convert.ToString(i) + j + k + l, myIndicesArray);
               }

      // Displays the values of the Array.
      outputBlock.Text += "The four-dimensional Array contains the following values:" + "\n";
      PrintValues(outputBlock, my4DArray);
   }


   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 four-dimensional Array contains the following values:
    0000    0001    0002    0003    0004
    0010    0011    0012    0013    0014
    0020    0021    0022    0023    0024
    0030    0031    0032    0033    0034
    0100    0101    0102    0103    0104
    0110    0111    0112    0113    0114
    0120    0121    0122    0123    0124
    0130    0131    0132    0133    0134
    0200    0201    0202    0203    0204
    0210    0211    0212    0213    0214
    0220    0221    0222    0223    0224
    0230    0231    0232    0233    0234
    1000    1001    1002    1003    1004
    1010    1011    1012    1013    1014
    1020    1021    1022    1023    1024
    1030    1031    1032    1033    1034
    1100    1101    1102    1103    1104
    1110    1111    1112    1113    1114
    1120    1121    1122    1123    1124
    1130    1131    1132    1133    1134
    1200    1201    1202    1203    1204
    1210    1211    1212    1213    1214
    1220    1221    1222    1223    1224
    1230    1231    1232    1233    1234
*/