C# ASP.NET GridView Selected Row Unselect

Introduction

This guide will show you how to unselect a selected row in an ASP.NET GridView using C#.

Prerequisites

• Knowledge of C# and ASP.NET
• A basic understanding of GridViews

Steps

1. First, add a GridView control to your ASP.NET page.

   <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnSelectedIndexChanged="GridView1_SelectedIndexChanged">
       <Columns>
           <asp:BoundField DataField="ID" HeaderText="ID" />
           <asp:BoundField DataField="Name" HeaderText="Name" />
           <asp:BoundField DataField="Age" HeaderText="Age" />
       </Columns>
   </asp:GridView>
   

2. Populate the GridView with data from your database or other data source.

   protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {
           BindGridView();
       }
   }
   
   private void BindGridView()
   {
       DataTable dt = new DataTable();
       // Populate DataTable with data from database or other data source
       GridView1.DataSource = dt;
       GridView1.DataBind();
   }
   

3. Add an event handler for the OnSelectedIndexChanged event to handle when a row is selected.

   protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
   {
       // Do something when a row is selected
   }
   

4. To unselect the currently selected row, simply call the ClearSelection() method of the GridView.

   protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
   {
       GridView gridView = (GridView)sender;
   
       if (gridView.SelectedIndex > -1)
       {
           // Do something with the selected row
           // ...
   
           // Unselect the row
           gridView.ClearSelection();
       }
   }
   

Conclusion

That's it! Now you know how to unselect a selected row in an ASP.NET GridView using C#. You can use this knowledge to build more complex functionality and improve the user experience of your application.