String again

[ma]

Hello,
I want to change one character in a string to a new character. How can i
do this. For example I have a string called x and it contains "This is a
test" and I want to change the i in is to a so after change it become "This
as a test". I tried the following code without any sucess:

public void ChangeChar(int index,char NewChar)

{

m_MyString.Remove(Index);

m_Privilage.Insert(Index,NewChar);

}

How can I convert a char to a string? How can I convert a char to char *?

Regards

[zacks]

On Oct 2, 10:47 am, "ma" <[e-mail]:

Hello,
I want to change one character in a string to a new character. How can i
do this. For example I have a string called x and it contains "This is a
test" and I want to change the i in is to a so after change it become "This
as a test". I tried the following code without any sucess:

public void ChangeChar(int index,char NewChar)

{

m_MyString.Remove(Index);

m_Privilage.Insert(Index,NewChar);

}

How can I convert a char to a string? How can I convert a char to char *?

Regards

I take it you missed the String.Replace method when you searched the
help text?

[Nicholas Paldino [.NET/C# MVP]]

ma,

You will have to return the new string. Strings are immutable, so you
can't change the contents (at least, not without bending over backwards).
You really want to do this:

public void ChangeChar(int index, char newChar)
{
// Remove the character first.
m_MyString = m_MyString.Remove(index);

// Insert the character.
m_MyString = m_MyString.Insert(index, newChar);
}

I changed the code so that you are changing the same variable. You were
not doing that in your original posted code.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"ma" <[e-mail] in message
news:O8**************@TK2MSFTNGP04.phx.gbl...

Hello,
I want to change one character in a string to a new character. How can
i do this. For example I have a string called x and it contains "This is a
test" and I want to change the i in is to a so after change it become
"This as a test". I tried the following code without any sucess:

public void ChangeChar(int index,char NewChar)

{

m_MyString.Remove(Index);

m_Privilage.Insert(Index,NewChar);

}

How can I convert a char to a string? How can I convert a char to char *?

Regards

[Hans Kesting]

ma used his keyboard to write :

Hello,
I want to change one character in a string to a new character. How can i
do this. For example I have a string called x and it contains "This is a
test" and I want to change the i in is to a so after change it become "This
as a test". I tried the following code without any sucess:

public void ChangeChar(int index,char NewChar)

{

m_MyString.Remove(Index);

m_Privilage.Insert(Index,NewChar);

}

How can I convert a char to a string? How can I convert a char to char *?

Regards

As mentioned before, you can not change the contents of a String. You
can however build a new string and replace the previous reference.
So build a new string: part before the insert, the new char, part after
the insert.

You might also want to look into StringBuilder (namespace System.Text),
which does have an Insert method.

Hans Kesting

[ma]

Thanks,
But the code doesn't compile with error code that it can not convert char to
string.
How can I change char to string? Note that it is not char * but char.

Regards


"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.comwrote in
message news:u$**************@TK2MSFTNGP02.phx.gbl...

ma,

You will have to return the new string. Strings are immutable, so you
can't change the contents (at least, not without bending over backwards).
You really want to do this:

public void ChangeChar(int index, char newChar)
{
// Remove the character first.
m_MyString = m_MyString.Remove(index);

// Insert the character.
m_MyString = m_MyString.Insert(index, newChar);
}

I changed the code so that you are changing the same variable. You
were not doing that in your original posted code.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"ma" <[e-mail] in message
news:O8**************@TK2MSFTNGP04.phx.gbl...

>Hello,
I want to change one character in a string to a new character. How can
i do this. For example I have a string called x and it contains "This is
a test" and I want to change the i in is to a so after change it become
"This as a test". I tried the following code without any sucess:

public void ChangeChar(int index,char NewChar)

{

m_MyString.Remove(Index);

m_Privilage.Insert(Index,NewChar);

}

How can I convert a char to a string? How can I convert a char to char *?

Regards

[ma]

<za***@construction-imaging.comwrote in message
news:11*********************@22g2000hsm.googlegrou ps.com...

On Oct 2, 10:47 am, "ma" <[e-mail]:

>Hello,
I want to change one character in a string to a new character. How
can i
do this. For example I have a string called x and it contains "This is a
test" and I want to change the i in is to a so after change it become
"This
as a test". I tried the following code without any sucess:

public void ChangeChar(int index,char NewChar)

{

m_MyString.Remove(Index);

m_Privilage.Insert(Index,NewChar);

}

How can I convert a char to a string? How can I convert a char to char *?

Regards

I take it you missed the String.Replace method when you searched the
help text?

Thanks.
Replace change all occurrence of the char with new ones but I want to
replace one specific one with a new one.

Regards

[Nicholas Paldino [.NET/C# MVP]]

You can call ToString on the character, like so:
public void ChangeChar(int index, char newChar)
{
// Remove the character first.
m_MyString = m_MyString.Remove(index);

// Insert the character.
m_MyString = m_MyString.Insert(index, newChar.ToString());
}
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.comwrote in
message news:u$**************@TK2MSFTNGP02.phx.gbl...

ma,

You will have to return the new string. Strings are immutable, so you
can't change the contents (at least, not without bending over backwards).
You really want to do this:

public void ChangeChar(int index, char newChar)
{
// Remove the character first.
m_MyString = m_MyString.Remove(index);

// Insert the character.
m_MyString = m_MyString.Insert(index, newChar);
}

I changed the code so that you are changing the same variable. You
were not doing that in your original posted code.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"ma" <[e-mail] in message
news:O8**************@TK2MSFTNGP04.phx.gbl...

>Hello,
I want to change one character in a string to a new character. How can
i do this. For example I have a string called x and it contains "This is
a test" and I want to change the i in is to a so after change it become
"This as a test". I tried the following code without any sucess:

public void ChangeChar(int index,char NewChar)

{

m_MyString.Remove(Index);

m_Privilage.Insert(Index,NewChar);

}

How can I convert a char to a string? How can I convert a char to char *?

Regards

[Ben Voigt [C++ MVP]]

"ma" <[e-mail] in message
news:O8**************@TK2MSFTNGP04.phx.gbl...

Hello,
I want to change one character in a string to a new character. How can
i do this. For example I have a string called x and it contains "This is a
test" and I want to change the i in is to a so after change it become
"This as a test". I tried the following code without any sucess:

public void ChangeChar(int index,char NewChar)

{

m_MyString.Remove(Index);

m_Privilage.Insert(Index,NewChar);

}

How can I convert a char to a string? How can I convert a char to char *?

See string.ToCharArray(), once you have an array you can overwrite any
character at will.

[bob]

Hi ma,
If your string varies then perhaps you should be using regular
expressions to find and replace. See regex class
regards
Bob

On Tue, 2 Oct 2007 15:47:34 +0100, "ma" <[e-mail]:

>Hello,
I want to change one character in a string to a new character. How can i
do this. For example I have a string called x and it contains "This is a
test" and I want to change the i in is to a so after change it become "This
as a test". I tried the following code without any sucess:

public void ChangeChar(int index,char NewChar)

{

m_MyString.Remove(Index);

m_Privilage.Insert(Index,NewChar);

}

How can I convert a char to a string? How can I convert a char to char *?

Regards

[Jesse Houwing]

Hello Bob,

Hi ma,
If your string varies then perhaps you should be using regular
expressions to find and replace. See regex class
regards
Bob
On Tue, 2 Oct 2007 15:47:34 +0100, "ma" <[e-mail]:

>Hello,
I want to change one character in a string to a new character. How
can i
do this. For example I have a string called x and it contains "This
is a
test" and I want to change the i in is to a so after change it become
"This
as a test". I tried the following code without any sucess:
public void ChangeChar(int index,char NewChar)

{

m_MyString.Remove(Index);

m_Privilage.Insert(Index,NewChar);

}

How can I convert a char to a string? How can I convert a char to
char *?

As a string is an immutable type in .NEt you'd have to change your code a
bit:

public string ChangeChar(int index,char NewChar)
{
return m_MyString.Remove(Index).Insert(Index,NewChar);
}
Or you might be able to use a ref parameter:

public void ChangeChar(ref string input, int index,char NewChar)
{
input = input.Remove(Index).Insert(Index,NewChar);
}

Also consider that if you're going to search and replace many characters
in your string, it might be much faster to do all the manipulations on a
StringBuilder instead.
--
Jesse Houwing
jesse.houwing at sogeti.nl