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, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. He is the Chief Editor of a Developer Magazine called DNC Magazine. He has also authored two Books - 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook.

Follow him on twitter @suprotimagarwal.

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