StringBuilder.Append Method (Double)

July 28, 2014

Appends the string representation of a specified double-precision floating-point number to the end of this instance.

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

public StringBuilder Append(
	double value
)

Parameters

value
Type: System.Double
The value to append.

Return Value

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

ExceptionCondition
ArgumentOutOfRangeException

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

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.


double value = 1034769.47;
System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append('*', 5).Append(value).Append('*', 5);
outputBlock.Text += sb + Environment.NewLine;
// The example displays the following output:
//       *****1034769.47*****


The Append method calls the Double.ToString(IFormatProvider) method to get the string representation of value for the current culture. To control the formatting of value, call the AppendFormat method.

The capacity of this instance is adjusted as needed.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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