Hi all

I've a GrivView where I'm showing the entries of a table. each entry MAY (but doesn't have to) have an Image which is read through a handler.
The problem is that if there's no image for an entry, the cross-icon is shown.

 Is there a property that signals me if the Image control contains data, so that i can hide the Image if it's empty?
Or does anybody know a better solution

Hello Mr King..

Well you can check whether file is exist in its physical location or not...

if condition satisfied jst set the other image path which indicates No image found..

Here i sample code...

You can also hide the Image control...i mean make it visible false...but not looks pretty one.Show like space.. 

protected void grdtest_RowDataBound(object sender, GridViewRowEventArgs e)
    {
       if (e.Row.RowType == DataControlRowType.DataRow)
         {
            Image imgCarPic = (Image)e.Row.FindControl("imgCarPic");
            if (string.IsNullOrEmpty(imgCarPic.ImageUrl.ToString()))
            {
                imgCarPic.ImageUrl = "../images/NoImageSmall.jpg";
            }
            else
            {
                String strUploadedPicPath = Server.MapPath(imgCarPic.ImageUrl.ToString());
                if (!System.IO.File.Exists(strUploadedPicPath))
                {
                    imgCarPic.ImageUrl = "../images/NoImageSmall.jpg";
                }           
            }
          }
    }

Try to create a templatefield like this:

<asp:TemplateField ItemStyle-Width=50px >

<ItemTemplate >

<img visible="<%# IsEmpty(Eval("Image")) %>" src="ImageURL"/>

</ItemTemplate>

</asp:TemplateField>

Code behind file:

public bool IsEmpty(Object obj) {
if (obj.ToString() == "") {
 return true;
}

return false;

} 

Pushkar:

Hello Mr King..

Well you can check whether file is exist in its physical location or not...

if condition satisfied jst set the other image path which indicates No image found..

Here i sample code...

You can also hide the Image control...i mean make it visible false...but not looks pretty one.Show like space.. 

protected void grdtest_RowDataBound(object sender, GridViewRowEventArgs e)
    {
       if (e.Row.RowType == DataControlRowType.DataRow)
         {
            Image imgCarPic = (Image)e.Row.FindControl("imgCarPic");
            if (string.IsNullOrEmpty(imgCarPic.ImageUrl.ToString()))
            {
                imgCarPic.ImageUrl = "../images/NoImageSmall.jpg";
            }
            else
            {
                String strUploadedPicPath = Server.MapPath(imgCarPic.ImageUrl.ToString());
                if (!System.IO.File.Exists(strUploadedPicPath))
                {
                    imgCarPic.ImageUrl = "../images/NoImageSmall.jpg";
                }           
            }
          }
    }

 

 thx, but in my case i'm saving the image as byte array in the db, so i can't check on a physical path.

Check Binary Image 

Check Image Information 

Let me know if any problem. 

 Yeh one more thing when you upload the Image you should check the content length ..

Check File Size 

ziomdk:

public bool IsEmpty(Object obj) 
{
    if (obj != null) 
    {
        return true;
    }

    return false;
} 

 

 it worked! but you mustn't use the ToString() method, because if the value is null it will give an error. use simply the following code: