Array.GetValue Method (Int32)
May 02, 2013
Gets the value at the specified position in the one-dimensional Array. The index is specified as a 32-bit integer.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- index
- Type: System.Int32
A 32-bit integer that represents the position of the Array element to get.
| Exception | Condition |
|---|---|
| ArgumentException | The current Array does not have exactly one dimension. |
| IndexOutOfRangeException | index is outside the range of valid indexes for the current Array. |
The GetLowerBound and GetUpperBound methods can determine whether the value of index is out of bounds.
This method is an O(1) operation.
The following code example demonstrates how to set and get a specific value in a one-dimensional or multidimensional array.
using System; public class Example { public static void Demo(System.Windows.Controls.TextBlock outputBlock) { // Creates and initializes a one-dimensional array. String[] myArr1 = new String[5]; // Sets the element at index 3. myArr1.SetValue("three", 3); outputBlock.Text += String.Format("[3]: {0}", myArr1.GetValue(3)) + "\n"; // Creates and initializes a two-dimensional array. String[,] myArr2 = new String[5, 5]; // Sets the element at index 1,3. myArr2.SetValue("one-three", 1, 3); outputBlock.Text += String.Format("[1,3]: {0}", myArr2.GetValue(1, 3)) + "\n"; // Creates and initializes a three-dimensional array. String[, ,] myArr3 = new String[5, 5, 5]; // Sets the element at index 1,2,3. myArr3.SetValue("one-two-three", 1, 2, 3); outputBlock.Text += String.Format("[1,2,3]: {0}", myArr3.GetValue(1, 2, 3)) + "\n"; // Creates and initializes a seven-dimensional array. String[, , , , , ,] myArr7 = new String[5, 5, 5, 5, 5, 5, 5]; // Sets the element at index 1,2,3,0,1,2,3. int[] myIndices = new int[7] { 1, 2, 3, 0, 1, 2, 3 }; myArr7.SetValue("one-two-three-zero-one-two-three", myIndices); outputBlock.Text += String.Format("[1,2,3,0,1,2,3]: {0}", myArr7.GetValue(myIndices)) + "\n"; } } /* This code produces the following output. [3]: three [1,3]: one-three [1,2,3]: one-two-three [1,2,3,0,1,2,3]: one-two-three-zero-one-two-three */
