String can be
modified by using stringbuilder class. We can take an example for better
understanding, suppose there are two string string11 and string2:
Dim
String1 As New
StringBuilder("Hello")
Dim
String2 As New
StringBuilder()
On above String1 is created with five characters 'Hello'
and String is created as an empty string, we can modified these string
dynamically such as we can append these string or add some string on it.so we
can say that this class can be used when we want to
modify a string without creating a new object. On here String1 and
String2 can be also called by dynamic strings or mutable strings.
String Builder class provides many methods and properties
such as:
Methods:
|
Append |
Appends information to the end of the
current StringBuilder. |
|
AppendFormat |
Replaces a format specifier passed in a
string with formatted text. |
|
Insert |
Inserts a string or object into the
specified index of the current StringBuilder. |
|
Remove |
Removes a specified number of characters
from the current StringBuilder. |
|
Replace |
Replaces a specified character at a
specified index. |
Example:
Private
Sub Example_StringBuilder()
Dim
String1 As New
StringBuilder("beautiful")
Dim
String2 As New
StringBuilder()
String2 = String1.Append("
Picture")
' value
of String2="beautiful Picture"
String2 = String1.Remove(2, 4)
' value
of String2="beful Picture"
String2 = String1.Insert(2,
"auti")
' value
of String2="beautiful Picture"
String2 = String1.Replace("beautiful",
"Wonderful")
' value
of String2="Wonderful Picture"
End
Sub
Output:
String2 ='beautiful Picture'
String2 ='beful Picture'
String2 ='beautiful Picture'
String2 ='Wonderful Picture'