Create images in runtime/Dynamically

Question

User1716325940 posted

Hello

My problem is that I don't know how to create an image to my webpage dynamically. On my webpage, I have a dropdownbox with four options. Autoposback is enabled. Dependent on witch of the options is choosed I create a different amount of labels and textboxes. I also need to create an image, but i don't know how to do that. 

This is how I create a label: 

Label_Dynamic[iCounter] = new Label();
Label_Dynamic[iCounter].ID = "Label_Dynamic" + System.Convert.ToString(iCounter);
Label_Dynamic[iCounter].Text = "Week/Day for service:";
Label_Dynamic[iCounter].Style["Position"] = "Absolute";
Label_Dynamic[iCounter].Style["Color"] = "#cb0022";
Label_Dynamic[iCounter].Style["Font-Size"] = "10pt";
Label_Dynamic[iCounter].Style["Top"] = "" + (6 + (iOffsetCounter * 42)) + "px";
Label_Dynamic[iCounter].Style["Left"] = "0px";
Label_Dynamic[iCounter].Visible = true;
Panel_OnChangeType.Controls.Add(Label_Dynamic[iCounter]);

Is it possible to create a picture in a way like this? I tried 'new Image();' but it didn't work...

Hope you can help me...

Answer 1

User312496708 posted

This article should help

http://www.exforsys.com/tutorials/asp.net-2.0/asp.net-dynamic-image-control.html

http://www.c-sharpcorner.com/UploadFile/nagryum/generateimages07062007075701AM/generateimages.aspx

Answer 2

User-1426124666 posted

For a very basic example, have a look at the first piece of code in this article. 

Answer 3

User1716325940 posted

Thanks for the links...

 I'll follow the articles and se if I can make it work...

 //Thomas

Answer 4

User1716325940 posted

Sorry... I think you guys misunderstood me.

I've expressed myself wrong :-(

The thing is, that I don't want to 'Create' an image. I want is to place a small image on the page dynamically and have the oppotunity to remove it again.

I have an image in '~/Images/' called info.jpg - which I want to place on my page.

Answer 5

User-1426124666 posted

Oh, I see. In that case you will need to create a dynamic control when the page loads, e.g

Dim i As New Image

i.ImageURL = "path to image" 

myPanel.Controls.Add(i) 

 

 

Answer 6

User1716325940 posted

Isn't that only possible in Visual Basic? My code is C#

//Thomas

Oh, I see. In that case you will need to create a dynamic control when the page loads, e.g

Dim i As New Image

i.ImageURL = "path to image" 

myPanel.Controls.Add(i) 

 

 

Answer 7

User-1426124666 posted

Isn't that only possible in Visual Basic? My code is C#

No, you can use exactly the same objects and methods in C#.

Answer 8

User1716325940 posted

Hmm ok.

I'm sorry, but I don't know how to use it in C# then.

In your example there's no semicolons?

For the 'Dim' Visual Studio writes: "The type or namespace name 'Dim' could not be found (are you missing a using directive or an assembly reference?)"

//Thomas

Answer 9

User-1426124666 posted

C# simply has different syntax to VB.NET. For C#, it would be something like

Image i;

i.ImageURL = "path to image";

myPanel.Controls.Add[i];

Either way, my point wasn't to give you code that you can copy and paste. If you do this, you won't learn anything. What you should do, is look at the objects and methods that I mentioned, look them up in the help file and see how they can be used. This way you will understand what you are actually doing rather than just copying an answer from something you found on the internet.

Answer 10

User104627567 posted

if i m nt wrong u can try this...

Image img = new Image();
           set the url for image
            img.ImageUrl = "~/images/thumb-3.jpg";
           img.Width = 120; //set the image width
           img.Height = 100; //set the image hight
          imageDiv.Controls.Add(img);