Getting and Displaying Images from SQL Server with C#

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Displaying images from wellknown URLs is quite straightforward. At times, however, you need to display images that are available as raw binary data. These images won't reside on the server as physical files.

They will be generated and held in memory using System. Drawing classes or something similar. There can be multiple ways to deal with this problem. This article discusses a couple of them. The first approach that I discuss involves sending a Base64 representation of the image through ViewBag. The action method under consideration generates such a Base64 version of the image often called Display binary image from database in aspnet c# URL and then pass it to the view via a ViewBag property.

Here is how this is done:. The above code shows Index action method of HomeController. For the sake of simplicity it uses a physical image file rather than dynamically generated image. The image file is read as a byte array using ReadAllBytes method. In a more realistic situation you will replace the first two lines with the image generation logic of your own. Once the image content is read as a byte array, it is converted into a Base64 string using ToBase64String method of Convert class.

This Base64 string is used to form a display binary image from database in aspnet c# URL as shown. Notice how the data URL has data: This way the browser knows that the src attribute value itself contains the image data. Make sure to change the image type. Let's see another technique to achieve the same result. This technique calls for creation display binary image from database in aspnet c# another action method. Here is how this approach works:. Here, the GetImage action method reads the image file into a byte array.

It then uses File method of the Controller base class to send the contents to the caller. The first parameter is a byte array that represents the file content and the second parameter indicates the MIME content type. Make sure to change the content type as per your needs. If you run the application the result would be the same as in earlier case.

Registration open for May batches of ASP. NET Core and Angular instructor-led online courses. Conducted by Bipin Joshi on weekends. Click here for more details.

Display image from byte array in ASP. Here is how this is done: The Index view makes use of this ViewBag property as shown below: Here is how this approach works: To use the GetImage action method you will write this markup in the view: He also conducts online courses on ASP.

He is a published author and has authored display binary image from database in aspnet c# co-authored books for Apress and Wrox press. Having embraced the Yoga way of life he also teaches Ajapa Yoga to interested individuals.

To know more about him click here. Popular from this category Load ASP.

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Uploading image to database is not a normal practice but in some situations we need it, in my previous blog many people request to write to store the image into database, first of all, I would like to thanks for all those emails and interest in my blogs and site. I am going to change the database structure a little bit but use the same modal to post the data from view to controller which we used in previous blog, there is no change into create view.

Before jumping to the coding part I would like to point out what you need to be careful when you are going to store the files into database. First of all we will see the table structure to store the product detail with image, to store image what would be the best data type we need to use, let's see available data types to store image or file.

Avoid using these data types in new development work, and plan to modify applications that currently use them. Use nvarchar max , varchar max , and varbinary max instead. So we will use varbinary max , the good thing is that, even if your data type is image, the same code will work because we will send the byte array from model to data, so it's up to you what you want to use, here is the table structure of products.

We need to change our post method to save the image into database than resize in two different sizes and save into folder and update image path into database. I am not going to save two different version of image into database, if you want you can do it easy, see the previous blog to rezie the image.

Before looking into complete post method let's check how we can get the byte array from posted data. We are reading all the bytes by using BinaryReader from the posted file in model. I am not going to show how to edit the record, you can try it to learn, let me know if there is anything you need more detail.

Otherwise any user can fill your database with huge files and your application will be very very slow. MVC display image from database. MVC upload image to database mvc save image database asp.

Before jumping to the coding part I would like to point out what you need to be careful when you are going to store the files into database when you store the image into table every record will be huge due to image bytes It's good to keep the image into a separate table so retrieval of record on that table cannot affect Keeping separate table also give option to store as many image for a single record as we wan, by using the primary key and foreign key First of all we will see the table structure to store the product detail with image, to store image what would be the best data type we need to use, let's see available data types to store image or file.

Add product ; db. Image' convert byte array to base64 string, if we want, we can create a method somewhere or on top of the page now convert base64 string to image format and store into imgSrc this imgSrc will be used as the image path to bind see the image tag src attribute. If you want to see the complete listing page html then it is here: We need to be careful to restrict the use to upload Maximum number of images Maximum size of image Type of images Otherwise any user can fill your database with huge files and your application will be very very slow.

Worked with Metaoption LLC, for more than 9 years and still with the same company. Always ready to learn new technologies and tricks. Other blogs you may like mvc search page example with code MVC Searh page with pagination: So in this article we will see how to select records from database with WebGrid, pagination and sort functionality , update a We need a method to get the data from database, a controller method to handle the In my previous post [ASP.

Net MVC file upload][1], I promised to post soon about how to upload multiple files. Config 2 Routing 2.