Take a look at the following post for some extremely useful information.

Enhance your GridView and DataList Controls with Clickable and Double Clickable Rows

        public void HandleGridViewRowDataBound(object sender, GridViewRowEventArgs e)
                {
                    if (e.Row.RowType == DataControlRowType.DataRow)
                    {
                        // Accessing the LinkButton control in the first cell
                        LinkButton _singleClickButton = (LinkButton)e.Row.Cells[0].Controls[0];
                        // Obtaining the assigned javascript for this LinkButton

          string _jsSingle = ClientScript.GetPostBackClientHyperlink(_singleClickButton, "");
                        // Adding a delay of 300 milliseconds to prevent immediate postback on first click
                        _jsSingle = _jsSingle.Insert(11, "setTimeout(\"");
                        _jsSingle += "\", 300)";
                        // Attaching this javascript to the onclick Attribute of the row
                        e.Row.Attributes["onclick"] = _jsSingle;

                        // Accessing the LinkButton control in the second cell
                        LinkButton _doubleClickButton = (LinkButton)e.Row.Cells[1].Controls[0];
                        // Obtaining the assigned javascript for this LinkButton
                        string _jsDouble = ClientScript.GetPostBackClientHyperlink(_doubleClickButton, "");
                        // Attaching this javascript to the ondblclick Attribute of the row
                        e.Row.Attributes["ondblclick"] = _jsDouble;
                    }
                }



                public void HandleGridViewRowCommand(object sender, GridViewCommandEventArgs e)
                {
                    GridView _gridView = (GridView)sender;

                    // Retrieving the selected index and the command name
                    int _selectedIndex = int.Parse(e.CommandArgument.ToString());
                    string _commandName = e.CommandName;

                    switch (_commandName)
                    {
                        case ("SingleClick"):
                            _gridView.SelectedIndex = _selectedIndex;
                            this.Message.Text += "Single clicked GridView row at index " + _selectedIndex.ToString() + "<br />";
                            break;
                        case ("DoubleClick"):
                            Response.Write("<script type='text/javascript'>detailedresults=window.open('Patient//PatientDicomViewPage.aspx');</script>");

                            // Response.Redirect("ViewPatient.aspx");
                            this.Message.Text += "Double clicked GridView row at index " + _selectedIndex.ToString() + "<br />";
                            break;
                    }
                }


    Grid Design

     <asp:GridView ID="GridView1" runat="server" BackColor="White" BorderColor="#DEDFDE" 
                BorderStyle="None" BorderWidth="1px" CellPadding="4" ForeColor="Black" GridLines="Vertical" 
                OnRowDataBound="HandleGridViewRowDataBound" OnRowCommand="HandleGridViewRowCommand">
                <FooterStyle BackColor="#CCCC99" />
                <Columns>                
                    <asp:ButtonField Text="SingleClick" CommandName="SingleClick" Visible="false"/>
                    <asp:ButtonField Text="DoubleClick" CommandName="DoubleClick" Visible="false"/>
                </Columns>
                <RowStyle BackColor="#F7F7DE" />
                <HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" />
                <SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" />
                <PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" />            
                <AlternatingRowStyle BackColor="White" />
            </asp:GridView>
<asp:Label id="Message" runat="server" ForeColor="Red" Font-Bold="true"></asp:Label>  

Here is a different approach that focuses on handling double clicks:

For the front end implementation, include the following:

OnRowDataBound="YourGrid_RowDataBound" OnRowEditing="YourGrid_RowEditing" 

On the backend side:

protected void YourGrid_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            e.Row.Attributes["ondblclick"] = Page.ClientScript.GetPostBackClientHyperlink(YourGrid, "Edit$" + e.Row.RowIndex);           
            e.Row.Attributes["style"] = "cursor:pointer";
        }
    }
    
    protected void YourGrid_RowEditing(object sender, GridViewEditEventArgs e)
    {
        // Your custom code goes here
        // For example:
        // Access the grid
        GridView grid = (GridView)sender;
        // Access the edited row
        GridViewRow editedRow = (GridViewRow)grid.Rows[e.NewEditIndex];
        // Retrieve data from a specific cell in the row
        string cellData = editedRow.Cells[1].Text.ToString();
        
       
    }