📄 html_image.aspx

📁 东软内部材料（四）asp等相关的教学案例　
💻 ASPX
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<%@Page Language="C#"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>

<script language="JScript">
<!--
function ShowHTMLContent() {
  var strURL = 'http://<% = Request.ServerVariables["SERVER_NAME"] %><% = Request.Path %>?<% = Request.QueryString %>';
  var strDisplay = new String;
  var objHTTP = new ActiveXObject("microsoft.XMLHTTP")
  objHTTP.open('GET', strURL, false);
  objHTTP.send();
  var strReply = objHTTP.responseText;
  var intStart = strReply.indexOf('<!' + '--start-->') + 12;
  var intEnd = strReply.indexOf('<!' + '--end-->');
  if ((intStart > 0) && (intEnd > intStart))
    var strDisplay = strReply.substring(intStart, intEnd);
  document.all['outHTML'].innerText = strDisplay + ' ';
}
function SetCheck(strCheckboxName) {
  document.all[strCheckboxName].checked = true;
}
//-->
</script>

<!-- #include file="style.inc" -->
</head>
<body bgcolor="#ffffff" onload="ShowHTMLContent()">
<!--------------------------------------------------------------------------->
<span class="heading">HtmlImage Control</span> &nbsp; &nbsp; &nbsp;

<!--start-->
<img id="MyControl" src="BookmarkButton.gif" runat="server" />
<!--end-->

<p /><div id="outError" runat="server" /><p />
<font face="Courier New" size="2"><div style="background-color:gainsboro; padding-left:10px" id="outHTML">Fetching HTML content...</div></font>

<form runat="server" method="get">
<table border="0">
<tr>
<td nowrap="nowrap"><input type="checkbox" id="chkAlign" runat="server" /> Set: &nbsp; </td><td align="right" nowrap="nowrap">Align =</td><td nowrap="nowrap"><select id="selAlign" size="1" runat="server" onchange="SetCheck('chkAlign')">
<option></option><option>AbsBottom</option><option>AbsMiddle</option><option>Baseline</option><option>Bottom</option><option>Left</option>
<option>Middle</option><option>Right</option><option>TextTop</option><option>Top</option></select></td>
<td nowrap="nowrap">&nbsp; &nbsp; &nbsp; &nbsp;</td>
<td nowrap="nowrap"><input type="checkbox" id="chkAlt" runat="server" /> Set: &nbsp; </td><td align="right" nowrap="nowrap">Alt =</td><td nowrap="nowrap"><input type="text" size="20" id="txtAlt" runat="server" onkeypress="SetCheck('chkAlt')" /></td>
</tr><tr>
<td nowrap="nowrap"><input type="checkbox" id="chkBorder" runat="server" /> Set: &nbsp; </td><td align="right" nowrap="nowrap">Border =</td><td nowrap="nowrap"><input type="text" size="3" id="txtBorder" runat="server" onkeypress="SetCheck('chkBorder')" />px</td><td></td>
<td nowrap="nowrap"><input type="checkbox" id="chkDisabled" runat="server" /> Set: &nbsp; </td><td align="right" nowrap="nowrap">Disabled =</td><td nowrap="nowrap"><select id="selDisabled" size="1" runat="server" onchange="SetCheck('chkDisabled')"><option>True</option><option>False</option></select></td>
</tr><tr>
<td nowrap="nowrap"><input type="checkbox" id="chkHeight" runat="server" /> Set: &nbsp; </td><td align="right" nowrap="nowrap">Height =</td><td nowrap="nowrap"><input type="text" size="3" id="txtHeight" runat="server" onkeypress="SetCheck('chkHeight')" />px</td><td></td>
<td nowrap="nowrap"></td><td align="right" nowrap="nowrap">ID =</td><td nowrap="nowrap"><% = MyControl.ID %></td>
</tr><tr>
<td nowrap="nowrap"><input type="checkbox" id="chkSrc" runat="server" /> Set: &nbsp; </td><td align="right" nowrap="nowrap">Src =</td><td nowrap="nowrap"><select id="selSrc" size="1" runat="server" onchange="SetCheck('chkSrc')">
<option>BookmarkButton.gif</option><option>BrickButton.gif</option><option>ClickmeButton.gif</option><option>PlayButton.gif</option><option>PauseButton.gif</option><option>RecordButton.gif</option><option>SpeckledButton.gif</option><option>StopButton.gif</option></select></td><td></td>
<td nowrap="nowrap"></td><td align="right" nowrap="nowrap">TagName =</td><td nowrap="nowrap"><% = MyControl.TagName %></td>
</tr><tr>
<td nowrap="nowrap"><input type="checkbox" id="chkVisible" runat="server" /> Set: &nbsp; </td><td align="right" nowrap="nowrap">Visible =</td><td nowrap="nowrap"><select id="selVisible" size="1" runat="server" onchange="SetCheck('chkVisible')"><option>True</option><option>False</option></select></td><td></td>
<td nowrap="nowrap"><input type="checkbox" id="chkWidth" runat="server" /> Set: &nbsp; </td><td align="right" nowrap="nowrap">Width =</td><td nowrap="nowrap"><input type="text" size="3" id="txtWidth" runat="server" onkeypress="SetCheck('chkWidth')" />px</td>
</tr><tr>
<td></td><td></td><td></td><td></td>
<td nowrap="nowrap"><input type="button" Value="Reset" onclick="javascript:location.href='http://<% = Request.ServerVariables["SERVER_NAME"] %><% = Request.Path %>'"></td><td nowrap="nowrap"></td><td nowrap="nowrap"><input type="submit" Value="Update" runat="server" /></td>
</tr>
</table>
</form>

<script language="C#" runat="server">

	void Page_Load(Object sender, EventArgs e)
	{
		outError.InnerHtml = "";

		try
		{
			if (IsPostBack)
			{
				if (chkAlign.Checked) MyControl.Align = selAlign.Value;
				if (chkAlt.Checked) MyControl.Alt = txtAlt.Value;
				if (chkBorder.Checked) MyControl.Border = Convert.ToInt32(txtBorder.Value);
				if (chkDisabled.Checked) MyControl.Disabled = Convert.ToBoolean(selDisabled.Value);
				if (chkHeight.Checked) MyControl.Height = Convert.ToInt32(txtHeight.Value);
				if (chkSrc.Checked) MyControl.Src = selSrc.Value;
				if (chkVisible.Checked) MyControl.Visible = Convert.ToBoolean(selVisible.Value);
				if (chkWidth.Checked) MyControl.Width = Convert.ToInt32(txtWidth.Value);
			}

			selAlign.Value = MyControl.Align.ToString();
			txtAlt.Value = MyControl.Alt;
			txtBorder.Value = MyControl.Border.ToString();
			selDisabled.Value = MyControl.Disabled.ToString();
			txtHeight.Value = MyControl.Height.ToString();
			selSrc.Value = MyControl.Src.ToString();
			selVisible.Value = MyControl.Visible.ToString();
			txtWidth.Value = MyControl.Width.ToString();
		}
		catch (Exception objError)
		{
			outError.InnerHtml = "<b>* Error</b>: " + objError.Message + "<p />";
		}
	}

</script>

<!--------------------------------------------------------------------------->
<!-- #include file="foot.inc" -->
</body>
</html>
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