Question

So this is working well for me so far but I do not want to make a new method for every image on the page. How do I get the control “Card” in the codebehind method when it is called so I can use the same method on every image button. Is there a better way to do this? All I want is to rotate an image 90 deg when clicked and, when clicked again rotate the image back. The problem is that I want to use only one method that will rotate any image.

protected void Card_Click(object sender, ImageClickEventArgs e)
    {
        if (Card.CssClass == "rotate90Large")
        {
            Card.CssClass = "";
        }
        else
        {
            Card.CssClass = "rotate90Large";
        }
    }

.aspx

<style type="text/css"> 
    .rotate90Large{-ms-transform: rotate(90deg); margin-left:45px; } 

</style>

<asp:ImageButton ID="Card" ImageUrl="Graphics/image.jpg" runat="server" onclick="Card_Click"  />

Answer 1

Casting the sender should be sufficient, and you can subscribe all image buttons to the same click event, in your case Card_Click

protected void Card_Click(object sender, ImageClickEventArgs e)
{
    ImageButton img = (ImageButton)sender;

    if (img.CssClass == "rotate90Large")
    {
        img.CssClass = "";
    }
    else
    {
        img.CssClass = "rotate90Large";
    }
}