共用方式為


StringBuilder.Append Method (Char, Int32)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Updated: January 2011

Appends a specified number of copies of the string representation of a Unicode character to the end of this instance.

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

Syntax

'Declaration
Public Function Append ( _
    value As Char, _
    repeatCount As Integer _
) As StringBuilder
public StringBuilder Append(
    char value,
    int repeatCount
)

Parameters

  • repeatCount
    Type: System.Int32
    The number of times to append value.

Return Value

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

Exceptions

Exception Condition
ArgumentOutOfRangeException

repeatCount is less than zero.

-or-

Enlarging the value of this instance would exceed its maximum capacity.

OutOfMemoryException

Out of memory.

Remarks

The Append method modifies the existing instance of this class; it does not return a new class instance. Because of this, you can call a method or property on the existing reference and you do not have to assign the return value to a StringBuilder object, as the following example illustrates.

Dim value As Decimal = 1346.19d
Dim sb As New System.Text.StringBuilder()
sb.Append("*"c, 5).AppendFormat("{0:C2}", value).Append("*"c, 5)
outputBlock.Text += sb.ToString() + vbCrLf
' The example displays the following output:
'       *****$1,346.19*****
decimal value = 1346.19m;
System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append('*', 5).AppendFormat("{0:C2}", value).Append('*', 5);
outputBlock.Text += sb + Environment.NewLine;
// The example displays the following output:
//       *****$1,346.19*****

The capacity of this instance is adjusted as needed.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Change History

Date

History

Reason

January 2011

Expanded the Remarks section and removed the example.

Customer feedback.