Delete Method using ObjectDataSource in Asp.Net | Delete Data for Gridview using ObjectDataSource

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Coding
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public DataSet GetCustomerDetail1()
{
String constring = "Data Source=VIKAS-PC\\SQLEXPRESS; Initial Catalog=customerdatabase; Integrated Security=true";
SqlConnection sqlcon = new SqlConnection(constring);
String query = "select * from customerdetail";
SqlCommand sqlcmd = new SqlCommand();
sqlcmd.CommandText = query;
sqlcmd.Connection = sqlcon;
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = sqlcmd;
DataSet ds = new DataSet();
da.Fill(ds);
return ds;

}

public void deleteCustomerDetail1(int customerid)
{
String constring = "Data Source=VIKAS-PC\\SQLEXPRESS; Initial Catalog=customerdatabase; Integrated Security=true";
SqlConnection sqlcon = new SqlConnection(constring);
SqlCommand sqlcmd = new SqlCommand("delete from customerdetail where customerid=" + customerid, sqlcon);
sqlcon.Open();
sqlcmd.ExecuteNonQuery();
sqlcon.Close();

}

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[BeHappy-wsbh]

Sir Insert, Update, Delete Method Tino Ek Sath Batao plz.
Using ObjectDataSource.

[BeHappy-wsbh]

Hello Sir I Have Wrote This Code But While Clicking On Delete Button Nothing Is Happening .
Here Is My Code .
public static void DeleteStudent(int ID)
{
String cs = "Data Source=USER-PC\\LOCAL;Initial Catalog=STUDENT;Integrated Security=True";
SqlConnection con = new SqlConnection(cs);
cmd.Parameters.Add(param);
con.Open();
cmd.ExecuteNonQuery();
con.Close();

}

I Have Wrote This Using ObjectDataSource.