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RadioButton value and single selection

Posted By:      Posted Date: August 29, 2010    Points: 0   Category :ASP.Net
I want to make a single selection in radiobutton in a gridview. I have added "GroupName" in radiobutton attributes but it only works in column which suppose to have a single selection in the entrire gridview. Another problem is getting the value of the radio button. Selected radio button value must appear in a textbox once it was clicked/checked.

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