Solved

Urgent easy question? Asc(a) to C#

Posted on 2004-10-16
12
197 Views
Last Modified: 2008-02-01
I have to avoid the Asc(a)
I put the int (a) instead and it does not work. can someone fix this.

private string DecodeReceipt (string szBill)
{
      string szNewBill;
                 szNewBill = "";
      for (int i = 1; i <= szBill.Length-1;i++)
      {
              char a = szBill[i];
                  if ((Asc)(a) ==10 || (Asc)(a) ==15 || (Asc)(a)==18 || (Asc)(a) ==27)
              {}          
              else if ((Asc)(a) == 13)
            szNewBill = "";
              else
            szNewBill = szNewBill + a;
      }
      return szNewBill;
}


private string DecodeReceipt (string szBill)
{
      string szNewBill;
                 szNewBill = "";
      for (int i = 1; i <= szBill.Length-1;i++)
      {
              char a = szBill[i];
                  if ((int)(a) ==10 || (int)(a) ==15 || (int)(a)==18 || (int)(a) ==27)
              {}          
              else if ((int)(a) == 13)
            szNewBill = "";
              else
            szNewBill = szNewBill + a;
      }
      return szNewBill;
}

0
Comment
Question by:mathieu_cupryk
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 6
  • 5
12 Comments
 
LVL 6

Expert Comment

by:ryerras
ID: 12329233
Ok, I know you are trying to convert each char to ASCII value. If thats correct you need to use System.Text namespace and Encoding.ASCII. Take a look at the following microsoft example

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemtextencodingclassasciitopic.asp

Good luck
0
 

Author Comment

by:mathieu_cupryk
ID: 12329283
c:\inetpub\wwwroot\mspos\receipts.aspx.cs(82,10): error CS0246: The type or namespace name 'ascii' could not be found (are you missing a using directive or an assembly reference?)

I raised it to 150.
private string DecodeReceipt (string szBill)
            {
                  string szNewBill;
                  szNewBill = "";
                  // Create an ASCII encoding.
                  Encoding ascii = Encoding.ASCII;
                  //Byte[] encodedBytes = ascii.GetBytes(unicodeString);
                  //String decodedString = ascii.GetString(encodedBytes);
                        
                  //Byte[] encodedBytes = ascii.GetBytes(unicodeString);

                  for (int i = 1; i <= szBill.Length-1;i++)
                  {
                        char a = szBill[i];
                        if ((ascii.GetBytes)(a) ==10 || (ascii.GetBytes)(a) ==15 || (ascii.GetBytes)(a)==18 || (ascii.GetBytes)(a) ==27)
                        {}          
                        else if ((ascii.GetBytes)(a) == 13)
                              szNewBill = "";
                        else
                              szNewBill = szNewBill + a;
                  }
                  return szNewBill;
            }
0
 
LVL 6

Expert Comment

by:ryerras
ID: 12329355
Ok, I didnt mean to say you should Encoding.ASCII as namespace. All you need to do is include System.Text at the top where all the using statements are, as follows

using System.Text;

I am going to modify your code as I understood wht you are doing


private string DecodeReceipt (string szBill)
          {
               string szNewBill;
               szNewBill = "";
               // Create an ASCII encoding.
               Encoding ascii = Encoding.ASCII;
               //Byte[] encodedBytes = ascii.GetBytes(unicodeString);
               //String decodedString = ascii.GetString(encodedBytes);
                   
               Byte[] encodedBytes = ascii.GetBytes(szNewBill );

              foreach (Byte a in encodedBytes)
              {
                   if ( a ==10 || a ==15 ||a==18 ||a ==27)
                    {}          
                    else if (a == 13)
                         szNewBill = "";
                    else
                         szNewBill = szNewBill +(char) a;

               }
       return szNewBill;
}

But onething I still do not understand, why are you making szNewBill=""; at the beginning of the for loop.

good luck
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 

Author Comment

by:mathieu_cupryk
ID: 12329364
BEcause I want to build a new string.
From one that has binary characters. Is this right?
0
 
LVL 6

Expert Comment

by:ryerras
ID: 12329369
ok my mistake, I havent seen szBill and szNewBill as different, let me rewrite the above code again

private string DecodeReceipt (string szBill)
          {
               string szNewBill;
               szNewBill = "";
              // Create an ASCII encoding.
               Encoding ascii = Encoding.ASCII;

               Byte[] encodedBytes = ascii.GetBytes(szBill );

              foreach (Byte a in encodedBytes)
              {
                   if ( a ==10 || a ==15 ||a==18 ||a ==27)
                    {}          
                    else if (a == 13)
                         szNewBill = "";
                    else
                         szNewBill = szNewBill +(char) a;
               }
       return szNewBill;
}
0
 

Author Comment

by:mathieu_cupryk
ID: 12329401
c:\inetpub\wwwroot\mspos\receipts.aspx.cs(77,23): error CS0103: The name 'encodedBytes' does not exist in the class or namespace 'MSPOS.Receipts'


private string DecodeReceipt (string szBill)
            {
                  string szNewBill;
                  
                  // Create an ASCII encoding.
                  Encoding ascii = Encoding.ASCII;
                          
                  Byte[] encodedBytes = ascii.GetBytes(szNewBill);

                  foreach (Byte a in encodedBytes)
                  {
                        if ( a ==10 || a ==15 ||a==18 ||a ==27)
                        {}          
                        else if (a == 13)
                              szNewBill = "";
                        else
                              szNewBill = szNewBill +(char) a;

                  }
                  return szNewBill;
            }
0
 
LVL 6

Expert Comment

by:ryerras
ID: 12329424
Sorry pal. I dont see why that error is coming. As you can see, we declared the encodedBytes in the method itself, with

Byte[] encodedBytes = ascii.GetBytes(szNewBill);

I hope you added using System.Text; on the top
And also I hope you are not trying to use it outside the method.
0
 

Author Comment

by:mathieu_cupryk
ID: 12329468
String reference not set to an instance of a String. Parameter name: s
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentNullException: String reference not set to an instance of a String. Parameter name: s

Source Error:


Line 72:                   // Create an ASCII encoding.
Line 73:                   Encoding ascii = Encoding.ASCII;
Line 74:                   Byte[] encodedBytes = ascii.GetBytes(szNewBill);
Line 75:                       
Line 76:
 
0
 
LVL 6

Expert Comment

by:ryerras
ID: 12329500
Dude, you are using wrong code from what I gave you,

This is the following I gave, please use that and compile

private string DecodeReceipt (string szBill)
          {
               string szNewBill="";
                             
               // Create an ASCII encoding.
               Encoding ascii = Encoding.ASCII;
                       
               Byte[] encodedBytes = ascii.GetBytes(szBill);

               foreach (Byte a in encodedBytes)
               {
                    if ( a ==10 || a ==15 ||a==18 ||a ==27)
                    {}          
                    else if (a == 13)
                         szNewBill = "";
                    else
                         szNewBill = szNewBill +(char) a;

               }
               return szNewBill;
          }
0
 
LVL 3

Expert Comment

by:nitrogenx
ID: 12336165

char a = 'a';
char.GetNumericValue(a);
0
 

Author Comment

by:mathieu_cupryk
ID: 12337436
Just want to understand the feed back here
this is the method getatoi?

char.GetNumericValue(a);
0
 
LVL 6

Accepted Solution

by:
ryerras earned 200 total points
ID: 12338765
Hey mathieu,
 So, my code didnt work for you?

By the way, GetNumericValue gives the value in integer, if the char is an integer. ok lets look at an example

if i='5';
then char.GetNumericValue(i) returns 5

but if i='a', char.GetNumericValue(a) does not return the ASCII value of 'a', it rather returns -1

I thought you want the ASCII stuff.. Let me know if not.
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Sometimes in DotNetNuke module development you want to swap controls within the same module definition.  In doing this DNN (somewhat annoyingly) swaps the Skin and Container definitions to the default admin selections.  To get around this you need t…
Problem Hi all,    While many today have fast Internet connection, there are many still who do not, or are connecting through devices with a slower connect, so light web pages and fast load times are still popular.    If your ASP.NET page …
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.
Visualize your data even better in Access queries. Given a date and a value, this lesson shows how to compare that value with the previous value, calculate the difference, and display a circle if the value is the same, an up triangle if it increased…

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question