Introduction
In Part2 of this article series we have discussed how to display Fields with
DetailsView Control. Now in this article we will discuss how display Empty Data
with DetailsView Control.
Displaying Empty Data with DetailsView Control
The DetailsView control includes two properties that we can use to display a
message when no results are returned from its data source. We can use the
EmptyDataText property to display an HTML string or the EmptyDataTemplate
property to display more complicated content.
Using EmptyDataText Property
The example given below does not return a record because no record in the
Product database table has an ID of 12.
<%@
Page Language="VB"
%>
<!DOCTYPE
html PUBLIC
"-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script
runat="server">
</script>
<html
xmlns="http://www.w3.org/1999/xhtml">
<head
id="Head1"
runat="server">
<title></title>
</head>
<body>
<form
id="form1"
runat="server">
<div>
<asp:DetailsView
id="dtlProducts"
DataSourceID="SqlDataSource1"
EmptyDataText="<b>No
Data Found.</b>"
Runat="server"
/>
<br
/>
<asp:SqlDataSource
ID="SqlDataSource1"
runat="server"
ConnectionString="<%$
ConnectionStrings:DatabaseConnectionString1
%>"
ProviderName="<%$
ConnectionStrings:DatabaseConnectionString1.ProviderName
%>"
SelectCommand="SELECT
[ID], [TITLE], [COMPANY], [PRICE] FROM [PRO_LIST] WHERE ID=12">
</asp:SqlDataSource>
</div>
</form>
</body>
</html>
When we open the page given above, the contents of the EmptyDataText property
are displayed.
Using EmptyDataTemplate Property
If we need to display more complicated content when no results are returned,
such as ASP.NET controls, then we can specify an EmptyDataTemplate. The page
given below illustrates how we can use the EmptyDataTemplate to display
complicated HTML content.
![EmptyDataTemplate_Property-in-DetailsView.JPG]()
<%@
Page Language="VB"
%>
<!DOCTYPE
html PUBLIC
"-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<style
type="text/css">
.noMatching
{
background-color:
Gray;
padding:10px;
font-family:Arial,Sans-Serif;
}
.noMatching
h1
{
color:Lime;
font-size:16px;
font-weight:bold;
}
</style>
<html
xmlns="http://www.w3.org/1999/xhtml">
<head
id="Head1"
runat="server">
<title></title>
</head>
<body>
<form
id="form1"
runat="server">
<div>
<asp:DetailsView
id="dtlProducts"
DataSourceID="SqlDataSource1"
Runat="server">
<EmptyDataTemplate>
<div
class="noMatching">
<h1>No
Data Found.</h1>
Please select a different record.
</div>
</EmptyDataTemplate>
</asp:DetailsView>
<br
/>
<asp:SqlDataSource
ID="SqlDataSource1"
runat="server"
ConnectionString="<%$
ConnectionStrings:DatabaseConnectionString1
%>"
ProviderName="<%$
ConnectionStrings:DatabaseConnectionString1.ProviderName
%>"
SelectCommand="SELECT
[ID], [TITLE], [COMPANY], [PRICE] FROM [PRO_LIST] WHERE ID=12">
</asp:SqlDataSource>
</div>
</form>
</body>
</html>
Note: Continue in Next Part.