Web Formshttp://forums.asp.net/18.aspxAll about building ASP.NET Pages - server controls, events, validation, etc.enCommunityServer 2007 SP1 (Build: 20510.895)Unexpected behavior with an ImageButton / Image control missing it's ImageUrl valuehttp://forums.asp.net/thread/2945506.aspxTue, 17 Feb 2009 00:06:33 GMT4c671506-2930-414c-a40b-8bf57ded5924:2945506scottgalscottgal0http://forums.asp.net/thread/2945506.aspxhttp://forums.asp.net/commentrss.aspx?SectionID=18&PostID=2945506<p><span style="WIDOWS:2;TEXT-TRANSFORM:none;TEXT-INDENT:0px;BORDER-COLLAPSE:separate;FONT:13px -webkit-monospace;WHITE-SPACE:pre-wrap;ORPHANS:2;LETTER-SPACING:normal;WORD-SPACING:0px;-webkit-border-horizontal-spacing:0px;-webkit-border-vertical-spacing:0px;-webkit-text-decorations-in-effect:none;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0;" class="Apple-style-span">We have had a report of an issue when using an ASP.NET Image / ImageButton control where the developer does not specify an ImageUrl. <br />This is the case by default when dragging an ImageButton&nbsp;/ Image control from the toolbox into your page. e.g.,<br /></span><span style="WIDOWS:2;TEXT-TRANSFORM:none;TEXT-INDENT:0px;BORDER-COLLAPSE:separate;FONT:13px -webkit-monospace;WHITE-SPACE:pre-wrap;ORPHANS:2;LETTER-SPACING:normal;WORD-SPACING:0px;-webkit-border-horizontal-spacing:0px;-webkit-border-vertical-spacing:0px;-webkit-text-decorations-in-effect:none;-webkit-text-size-adjust:auto;-webkit-text-stroke-width:0;" class="Apple-style-span">&nbsp;<pre class="coloredcode"> &lt;input type=&quot;image&quot; name=&quot;ImageButton1&quot; id=&quot;ImageButton1&quot; src=&quot;&quot; mce_src=&quot;&quot; style=&quot;border-width:0px;&quot; /&gt; </pre>&nbsp;</span>Will cause the following HTML to be rendered when the source for the generated&nbsp;page is viewed in your browser.<br />&nbsp;<pre class="coloredcode">&lt;input type=&quot;image&quot; name=&quot;ImageButton1&quot; id=&quot;ImageButton1&quot; src=&quot;&quot; mce_src=&quot;&quot; style=&quot;border-width:0px;&quot; /&gt;</pre>&nbsp;Notice that the &#39;src&#39; for this element is defined as &quot;&quot;, this wil actually cause a GET request back to the server, which the server will respond to by returning the default document for this particular site. <br /><br />We will be making ImageUrl a required element for these controls in future releases however, in current versions you should ensure that you <strong>always set the ImageUrl property of these controls </strong>to avoid an additional call being made for your default document.