How Do I Use Using (Memorystream Ms = New Memorystream())

Question

1.00/5 (1 vote)

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hi , im trying to creeate a barcode generator , heres my code:

C#

using (MemoryStream ms = new MemoryStream())
            {
                barcode.Save(ms, ImageFormat.Png);
                pictureBox1.Image = bitmap;
                pictureBox1.Height = bitmap.Height;
                pictureBox1.Width = bitmap.Width;

heres my error
'string' does not contain a definition for 'Save' and no extension method 'Save' accepting a first argument of type 'string' could be found (are you missing a using directive or an assembly reference?)
what refremce should i use for this? all my current refrences>

C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Drawing.Imaging;

Posted 3-Aug-15 21:53pm

jamesmc1535

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DamithSL 4-Aug-15 4:01am

what is barcode?

jamesmc1535 4-Aug-15 4:06am

like on products at a store, those stripy stuff\

Afzaal Ahmad Zeeshan 4-Aug-15 4:05am

barcode in your code is of type string. That is the main cause of problem, not the using block. Where (or how) is it defined?

jamesmc1535 4-Aug-15 4:08am

theres my full code
string barcode = textBox1.Text;
Bitmap bitmap = new Bitmap(barcode.Length * 40, 150);
using (Graphics graphics = Graphics.FromImage(bitmap))
{
Font oFont = new System.Drawing.Font("IDAutomationHC39M", 20);
PointF point = new PointF(2f, 2f);
SolidBrush black = new SolidBrush(Color.Black);
SolidBrush white = new SolidBrush(Color.White);
graphics.FillRectangle(white, 0, 0, bitmap.Width, bitmap.Height);
graphics.DrawString("*" + barcode + "*", oFont, black, point);
}
using (MemoryStream ms = new MemoryStream())
{
barcode.Save(ms, ImageFormat.Png);
pictureBox1.Image = bitmap;
pictureBox1.Height = bitmap.Height;
pictureBox1.Width = bitmap.Width;

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DamithSL · Accepted Answer · 2015-08-03T22:10:00

Solution 2

change

C#

barcode.Save(ms, ImageFormat.Png);

to

C#

bitmap.Save(ms, ImageFormat.Png);

Posted 3-Aug-15 22:10pm

DamithSL

Comments

jamesmc1535 4-Aug-15 4:12am

thanks man lol

Afzaal Ahmad Zeeshan 4-Aug-15 4:17am

5ed.

jamesmc1535 4-Aug-15 4:20am

i have a quiestion , on all my stuff that u replied u said 5ed. im curious
whats that mean?

Afzaal Ahmad Zeeshan 4-Aug-15 4:24am

That means I voted a 5 star on this post. His answer was helpful, so I voted 5 star, short as "5ed".

jamesmc1535 4-Aug-15 4:43am

i have another follow up question on this forms ect ect ect, theres a menu where u can edit n forms framework< rightclick properties if i recall perfectly but its not working

Afzaal Ahmad Zeeshan 4-Aug-15 4:44am

You may start a new thread for another question James.

jamesmc1535 4-Aug-15 4:43am

thanks

DamithSL 4-Aug-15 4:27am

:) you know that codeproject having Reputation system[^]? Afzaal here rated as 5 and he is mentioned it as comment.

jamesmc1535 4-Aug-15 4:43am

ive seen the rating system but didnt know what 5 ed meant lol thanks btw i have another follow up question on this forms ect ect ect, theres a menu where u can edit n forms framework< rightclick properties if i recall perfectly but its not working

OriginalGriff · Accepted Answer · 2015-08-03T22:10:00

barcode is a string - the error message says that - which means that it isn't an image of a barcode, it's a string containing the Article Number: "5013719020011"
If you want to convert it to a MemoryStream so you can save the image bytes in a database for example, then you need to first create a barcode image from that number. The framework doesn't know that you want a Code 39 or an EAN128 barcode just because you have a number in a string! :laugh:

Look at the rest of your code, and see where you have create the image - I'd suspect that you want to use bitmap instead.

How Do I Use Using (Memorystream Ms = New Memorystream())

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