StringBuilder.Insert Method (Int32, Double)


The .NET API Reference documentation has a new home. Visit the .NET API Browser on to see the new experience.

Inserts the string representation of a double-precision floating-point number into this instance at the specified character position.

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

member Insert : 
        index:int *
        value:float -> StringBuilder


Type: System.Int32

The position in this instance where insertion begins.

Type: System.Double

The value to insert.

Return Value

Type: System.Text.StringBuilder

A reference to this instance after the insert operation has completed.

Exception Condition

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


Enlarging the value of this instance would exceed MaxCapacity.

Double.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 4, the method throws an OutOfMemoryException.

The following example demonstrates the Insert method.

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
Return to top