Select Single Radio Button in Gridview in Asp.Net

Introduction

In this article we will learn how to select only one row of a GridView using RadioButtons whereas normally a RadioButton does not support selection of only one RadioButton within a row.

Background

In ASP.Net the GridView control does not support selection of a single RadioButton that works as a group across rows. Generally as you know a RadioButton is a control that works in a group for selecting only one option. If we take RadioButtonList control it will work everywhere, which applies to a GridView also but if we use only one RadioButton control for each row in GridView it will not allow us to select only one. Try selecting a RadioButton in every row; it will allow selection of multiple rows in GridView. Here we will see how to restrict the user to select only one RadioButton within a GridView control.

For doing this task I've written some Javascript function. This function actually I got from somewhere while Google search. We will step by step follow.

Step 1

Start new website. Put the GridView control on the Default.aspx page with RadioButton control in TemplateField like bellow.