Remove the Whitespace generated for each Parent TreeNode in an ASP.NET TreeView

I was working on a TreeView bound to a SiteMap control. Due to a space constraint while displaying the TreeView, I had to save as much space as I could while displaying my TreeView. Now by default, when a TreeView is generated, the Parent Root Nodes have a whitespace indent as visible below

image

When the TreeView gets rendered, ASP.NET generates a number of HTML Table tags to format it’s layout. So to remove the whitespace before each parent node, just use the following CSS

<style type="text/css">
.tv table tbody tr td:first-child
{
display:none;
}
</style>

where tv is the CssClass applied to the TreeView.

<asp:TreeView ID="TreeView1" runat="server"
DataSourceID="SiteMapDataSource1" CssClass="tv">

The resultant output is as shown below with the extra whitespace removed:

image



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About The Author

Suprotim Agarwal
Suprotim Agarwal, ASP.NET Architecture MVP (Microsoft Most Valuable Professional) works as an Architect Consultant and provides consultancy on how to design and develop Web applications.

Suprotim is also the founder and primary contributor to DevCurry, DotNetCurry and SQLServerCurry. He is the Editor of a Developer Magazine called DNC Magazine. He has also written two EBooks 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook

Follow him on twitter @suprotimagarwal

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