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Strings.Replace Method

.NET Framework 4

Returns a string in which a specified substring has been replaced with another substring a specified number of times.

Namespace: Microsoft.VisualBasic
Assembly: Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)

public static string Replace(
	string Expression,
	string Find,
	string Replacement,
	int Start,
	int Count,
	CompareMethod Compare
)

Parameters

Expression: Type: System.String
Required. String expression containing substring to replace.

Find: Type: System.String
Required. Substring being searched for.

Replacement: Type: System.String
Required. Replacement substring.

Start: Type: System.Int32
Optional. Position within Expression that starts a substring used for replacement. The return value of Replace is a string that begins at Start, with appropriate substitutions. If omitted, 1 is assumed.

Count: Type: System.Int32
Optional. Number of substring substitutions to perform. If omitted, the default value is –1, which means "make all possible substitutions."

Compare: Type: Microsoft.VisualBasic.CompareMethod
Optional. Numeric value indicating the kind of comparison to use when evaluating substrings. See Settings for values.

Return Value

Type: System.String
Replace returns the following values.

If	Replace returns
Find is zero-length or Nothing	Copy of Expression
Replace is zero-length	Copy of Expression with no occurrences of Find
Expression is zero-length or Nothing, or Start is greater than length of Expression	Nothing
Count is 0	Copy of Expression

Exceptions

Exception	Condition
ArgumentException	Count < -1 or Start <= 0.

Remarks

The return value of the Replace function is a string that begins at the position specified by Start and concludes at the end of the Expression string, with the substitutions made as specified by the Find and Replace values.

The Compare argument can have the following values.

Constant	Description
Binary	Performs a binary comparison
Text	Performs a textual comparison

Examples

This example demonstrates the Replace function.

Dim TestString As String = "Shopping List"
' Returns "Shipping List".
Dim aString As String = Replace(TestString, "o", "i")

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

Strings Class

Microsoft.VisualBasic Namespace

Filter

ArgumentException

Other Resources

String Manipulation Summary (Visual Basic)

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