Windows Dev Center

StringBuilder.Insert Method (Int32, Byte)

Inserts the string representation of a specified 8-bit unsigned integer into this instance at the specified character position.

Namespace:  System.Text
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
Public Function Insert ( _
	index As Integer, _
	value As Byte _
) As StringBuilder

Parameters

index
Type: System.Int32
The position in this instance where insertion begins.
value
Type: System.Byte
The value to insert.

Return Value

Type: System.Text.StringBuilder
A reference to this instance after the insert operation has completed.

ExceptionCondition
ArgumentOutOfRangeException

index is less than zero or greater than the length of this instance.

OutOfMemoryException

Enlarging the value of this instance would exceed MaxCapacity.

Byte.ToString is used to get a string representation of value. Existing characters are shifted to make room for the new text. The capacity of this instance is adjusted as needed.

Notes to Callers

In the .NET Framework 3.5 Service Pack 1 and earlier versions, calls to this method threw an ArgumentOutOfRangeException if inserting value would cause the object's total length to exceed MaxCapacity. Starting with the .NET Framework version 4, the method throws an OutOfMemoryException.

The following example demonstrates the Insert method.


Imports System.Text

Class Example
   '                                 index: 012345
   Private Shared initialValue As String = "--[]--"
   Private Shared sb As StringBuilder

   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      Dim xyz As String = "xyz"
      Dim abc As Char() = {"a"c, "b"c, "c"c}
      Dim star As Char = "*"c
      Dim obj As [Object] = 0

      Dim xBool As Boolean = True
      Dim xByte As Byte = 1
      Dim xInt16 As Short = 2
      Dim xInt32 As Integer = 3
      Dim xInt64 As Long = 4
      Dim xDecimal As [Decimal] = 5
      Dim xSingle As Single = 6.6F
      Dim xDouble As Double = 7.7

      ' The following types are not CLS-compliant.
      ' Dim xUInt16 As System.UInt16 = 8 
      ' Dim xUInt32 As System.UInt32 = 9
      ' Dim xUInt64 As System.UInt64 = 10 
      ' Dim xSByte As System.SByte = - 11
      '
      outputBlock.Text &= "StringBuilder.Insert method" & vbCrLf
      sb = New StringBuilder(initialValue)

      sb.Insert(3, xyz, 2)
      Show(outputBlock, 1, sb)

      sb.Insert(3, xyz)
      Show(outputBlock, 2, sb)

      sb.Insert(3, star)
      Show(outputBlock, 3, sb)

      sb.Insert(3, abc)
      Show(outputBlock, 4, sb)

      sb.Insert(3, abc, 1, 2)
      Show(outputBlock, 5, sb)

      sb.Insert(3, xBool)     ' True
      Show(outputBlock, 6, sb)

      sb.Insert(3, obj)       ' 0
      Show(outputBlock, 7, sb)

      sb.Insert(3, xByte)     ' 1
      Show(outputBlock, 8, sb)

      sb.Insert(3, xInt16)    ' 2
      Show(outputBlock, 9, sb)

      sb.Insert(3, xInt32)    ' 3
      Show(outputBlock, 10, sb)

      sb.Insert(3, xInt64)    ' 4
      Show(outputBlock, 11, sb)

      sb.Insert(3, xDecimal)  ' 5
      Show(outputBlock, 12, sb)

      sb.Insert(3, xSingle)   ' 6.6
      Show(outputBlock, 13, sb)

      sb.Insert(3, xDouble)   ' 7.7
      Show(outputBlock, 14, sb)

      ' The following Insert methods are not CLS-compliant.
      ' sb.Insert(3, xUInt16) ' 8
      ' sb.Insert(3, xUInt32) ' 9
      ' sb.Insert(3, xUInt64) ' 10
      ' sb.Insert(3, xSByte)  ' -11

   End Sub 'Main

   Public Shared Sub Show(ByVal outputBlock As System.Windows.Controls.TextBlock, ByVal overloadNumber As Integer, ByVal sbs As StringBuilder)
      outputBlock.Text += String.Format("{0,2:G} = {1}", overloadNumber, sbs.ToString()) & vbCrLf
      sb = New StringBuilder(initialValue)
   End Sub 'Show
End Class 'Sample
'
'This example produces the following results:
'
'StringBuilder.Insert method
' 1 = --[xyzxyz]--
' 2 = --[xyz]--
' 3 = --[*]--
' 4 = --[abc]--
' 5 = --[bc]--
' 6 = --[True]--
' 7 = --[0]--
' 8 = --[1]--
' 9 = --[2]--
'10 = --[3]--
'11 = --[4]--
'12 = --[5]--
'13 = --[6.6]--
'14 = --[7.7]--
'


Windows Phone OS

Supported in: 8.1, 8.0

Show:
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