DataList Show/Hide Table Rows
In the last few days, I was working on a Custom DotNetNuke Module, which is called ContactUs, which I will be using in one of the projects currently under my hands.
I wanted to list all entries of the ContactUs form that are stored in the database. So I decided to use the DataList, in which I place my own Table inside the ItemTemplate.
There are some fields in the ContactUs form that might be empty or null. So I didn't want to show the ROW inside the table for each NULL field in the database.
Here how I did it:
<asp:datalist id="dlstContactUs" runat="server" cellpadding="4" datakeyfield="itemId">
<ItemTemplate>
<table cellSpacing="0" cellPadding="2" border="0">
<tr vAlign="top" runat="server" id="trCompany" Visible='<%# IsNull(DataBinder.Eval(Container.DataItem,"Company")) %>'>
</tr>
</table>
</ItemTemplate>
</asp:datalist>
Watch the DarkGreen areas above.
In the code-behind, this is the IsNull method that I am using:
public bool IsNull(object item)
{
if ((item.ToString() != null) && (item.ToString() != String.Empty))
{
return true;
}
return false;
}
Hope that helps,
Regards