Create image from file programmatically asp.net C#

Question

I am writing project in asp.net C#. I want to create Image programmatically by the following code:

protected void Page_Load(object sender, EventArgs e)
        {
            Image image = new Image();
            image.ID = "image11";
            image.ImageUrl = "a.jpg";
            image.ImageAlign = ImageAlign.AbsMiddle;
            image.Visible = true;

        }

But nothing is displayed when I run the project. How to create image from file and display it in the page by writing code in .cs file?

Waqar Janjua · Accepted Answer · 2012-07-19 18:58:03Z

1

You have created an image control but you have not added it to your form. Write the below code to add the image control to your form.

form1.Controls.Add(image);

answered Jul 19, 2012 at 18:58

Waqar Janjua

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2 Comments

Nurlan Over a year ago

Thanks!It works. But my aim was to build an image gallery. If I add second image to the panel I lose the previous image. So how to add multiple images to the panel?

Waqar Janjua Over a year ago

@NurlanKenzhebekov if you want to add multiple images then you should use a datalist and a panel, in datalist a small image appears like an icon but when a person selects that icon display that image in a panel .

kakridge · Accepted Answer · 2012-07-19 18:59:36Z

1

At this point, you have just created an image, but you haven't added it to a control or page context to be displayed. You essentially said

int x = 10;

but then never did anything with x.

ASP.NET uses composition, so it maintains a collection of controls, with each control also containing a collection of children nodes. You need to add the image to a container. For instance, if you want to add the image to a panel named myPanel, it would be

myPanel.Controls.Add(image);

Check out this article.

edited Jul 19, 2012 at 18:59

answered Jul 19, 2012 at 18:53

kakridge

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2 Comments

Nurlan Over a year ago

Thanks!It works. But my aim was to build an image gallery. If I add second image to the panel I lose the previous image. So how to add multiple images to the panel?

kakridge Over a year ago

Make sure you do: image = new Image() for each image. If you don't you are just change the original image's attributes. If that is not it, please post code with an edit.

Pramod Gupta · Accepted Answer · 2018-06-11 07:38:49Z

0

You will need to create panel and then you will have to add that image to panel.

Panel Panel1= new Panel();
form1.Controls.Add(image);

answered Jun 11, 2018 at 7:38

Pramod Gupta

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