如何为图像控制执行if-else条件？

Question

How can I do an if-else condition for Image Control in ASP.NET if it is empty? If it is not empty, btnSave (Button) is enabled.

if (imageControl.Image != NULL)
{
btnSave.Enabled = true;
}

Answer 1

If by "empty" you mean ImageUrl is not set then

if (!string.IsNullOrEmpty(imageControl.ImageUrl))
{
    btnSave.Enabled = true;
}

If by "empty" you mean ImageUrl indeed contains some meaningfull image, you have to tackle the resulting

<img />

tag on client side.

Answer 2

asp.net imageControl has ImageUrl property where the path of the image file is located. you can check this property weather it is blank or empty as shown below:

if(imageControl.ImageUrl!=""){
    btnSave.Enabled = true;
}