Message box with yes or no popup in grid view delete event in C# ASP.NET

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C#

ASP.NET

I want to delete the record from a data grid and i am looking for a confirmation popup when the delete button is clicked. The confirmation pop up contains Yes or No. Yes will delete the record and No will cancel the process.

can we use

ScriptManager.RegisterStartupScript(this, this.GetType(), "Jscript2", "alert('Are you sure you want to delete this record!');", true);

for same yes or no popup ?

Please assist
Thanks in advance.

What I have tried:

if (e.CommandName == "DelDetails")
{
    ScriptManager.RegisterStartupScript(this, this.GetType(), "Jscript2", "alert('Are you sure you want to delete this record!');", true);

    GridViewRow rowSelect = (GridViewRow)(((ImageButton)e.CommandSource).NamingContainer);
    Label lbldeleteid = rowSelect.FindControl("lbl_StarId") as Label;

    string str_Incident_Number_delete = lbldeleteid.Text.ToString();

    SqlConnection con = new SqlConnection(cs);
    con.Open();
    SqlCommand cmd = new SqlCommand("delete from Workflow where ID ='" + str_Incident_Number_delete + "'", con);
    cmd.ExecuteNonQuery();
    con.Close();

    ShowOpMatData(1);
    Refresh();
}