String.Insert() problem

dear :
i have the following problem:
string sAttachmentBody;
int nCount = 0;
int nMaxLineLength = 77;
//sAttachmentBody.Length may reaches (560960 chars)
for(int i=0 ; i < sAttachmentBody.Length ; i++)
{
if(nCount % nMaxLineLength == 0 )
{
try
{
sAttachmentBody = sAttachmentBody.Insert(i,"\n\r");
}
catch(Exception ex)
{
wr = new System.IO.StreamWriter("C:\\stringerror.txt");
wr.WriteLine("Message = " + ex.Message );
wr.WriteLine("Stack = " + ex.StackTrace );
wr.Close();
}
nCount = 0;
}
}
the exception
Stack = at System.String.Insert(Int32 startIndex, String value)
at Utility.Email.SetAttachmentBody(String sAttachmentBody)
the exception occured ONLY if the length is to big , is there a replacement
for insert function because as I wrote the length may reaches millionsStringBuilder class might be what you are looking for.
"Raed Sawalha" wrote:

> dear :
> i have the following problem:
>
> string sAttachmentBody;
> int nCount = 0;
> int nMaxLineLength = 77;
> //sAttachmentBody.Length may reaches (560960 chars)
> for(int i=0 ; i < sAttachmentBody.Length ; i++)
> {
> if(nCount % nMaxLineLength == 0 )
> {
> try
> {
> sAttachmentBody = sAttachmentBody.Insert(i,"\n\r");
> }
> catch(Exception ex)
> {
> wr = new System.IO.StreamWriter("C:\\stringerror.txt");
> wr.WriteLine("Message = " + ex.Message );
> wr.WriteLine("Stack = " + ex.StackTrace );
> wr.Close();
> }
> nCount = 0;
> }
> }
> the exception
> Stack = at System.String.Insert(Int32 startIndex, String value)
> at Utility.Email.SetAttachmentBody(String sAttachmentBody)
> the exception occured ONLY if the length is to big , is there a replacemen
t
> for insert function because as I wrote the length may reaches millions
my problem is the index where I want to place the char all the overloaded
function is int
what should I do
"Tu-Thach" wrote:
> StringBuilder class might be what you are looking for.
> "Raed Sawalha" wrote:
>
int is sufficient for for handling millions of characters. I recommend that
you use the StringBuilder class and build up your string with "\r\n" instead
of replacing the string like you are doing now.
"Raed Sawalha" wrote:
> my problem is the index where I want to place the char all the overloaded
> function is int
> what should I do
> "Tu-Thach" wrote:
>
examnotes <RaedSawalha@.discussions.microsoft.com>
confessed in news:FA6628D8-8568-4E71-A1B9-337E43A04EC0@.microsoft.com:

> dear :
> i have the following problem:
>
> string sAttachmentBody;
> int nCount = 0;
> int nMaxLineLength = 77;
> //sAttachmentBody.Length may reaches (560960 chars)
> for(int i=0 ; i < sAttachmentBody.Length ; i++)
> {
> if(nCount % nMaxLineLength == 0 )
> {
> try
> {
> sAttachmentBody = sAttachmentBody.Insert(i,"\n\r");
> }
> catch(Exception ex)
> {
> wr = new System.IO.StreamWriter("C:\\stringerror.txt");
> wr.WriteLine("Message = " + ex.Message );
> wr.WriteLine("Stack = " + ex.StackTrace );
> wr.Close();
> }
> nCount = 0;
> }
> }
> the exception
> Stack = at System.String.Insert(Int32 startIndex, String value)
> at Utility.Email.SetAttachmentBody(String sAttachmentBody)
> the exception occured ONLY if the length is to big , is there a
replacement
> for insert function because as I wrote the length may reaches millions
Oh man, that's a killer memory operation.
Use a StringBuilder, not a String!
-- ipgrunt
use something larger. Perhaps an int64?