making a radio button remain selected on postback

I am using a GridView with its first column as a template field with radio buttons.

I need to make the first radio button in the first row of the grid remain default selected during page load / postba开发者_JAVA技巧ck.

How can this be done?

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Read this: http://www.asp.net/data-access/tutorials/adding-a-gridview-column-of-radio-buttons-vb

The heading titled "Using a Literal Control to Inject Radio Button Markup" may be of particular interest to you