C# 0 The Complete Reference

Inserting, Removing, and Replacing

You can insert a string into another using the 

Insert( )

 method, shown here:

public string Insert(int 

start

, string 

str

)

Here, 

str

 is inserted into the invoking string at the index specified by 

start.

 The resulting 

string is returned.

You can remove a portion of a string using 

Remove( )

, shown next:

public string Remove(int 

start

)

public string Remove(int 

start

, int 

count

)

The first form begins at the index specified by 

start

 and removes all remaining characters 

in the string. The second form begins at count and removes 

count

number of characters. In 

both cases, the resulting string is returned.

You can replace a portion of a string by using 

Replace( )

. It has these forms:

public string Replace(char 

ch1

, char 

ch2

)

public string Replace(string 

str1

, string 

str2

)

The first form replaces all occurrences of 

ch1

 in the invoking string with 

ch2.

 The second 

form replaces all occurrences of 

str1

 in the invoking string with 

str2.

 In both cases, the 

resulting string is returned.

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