Inserting Data According To Dropdownlist Criteria

[KontroL]

I got 2 datetimepicker, 1 dropdownlist, 1 gridview, 4 textboxes and 1 button in my asp.net project.I choose the dates from datetimepicker and i choose the employee name from dropdownlist.After i get the gridview according to that criterias. After that, i want to enter values in to the textboxes and i want to insert that values into the database with my button1_click event. Or if i can do that on source side.How can i do that ? Please help.Here is .cs codes ;\[code\]SqlConnection conn; SqlCommand cmd = new SqlCommand(); string strSQL = "Insert INTO penalties(DAY,P1,P2,OVER) Values (@DAY,@P1,@P2,@OVER)"; string bag_str = WebConfigurationManager.ConnectionStrings["asgdb01ConnectionString"].ConnectionString; conn = new SqlConnection(bag_str); conn.Open(); cmd.Connection = conn; cmd.CommandText = strSQL; cmd.Parameters.Add(new SqlParameter("@DAY", TextBox3.Text)); cmd.Parameters.Add(new SqlParameter("@P1", TextBox4.Text)); cmd.Parameters.Add(new SqlParameter("@P2", TextBox5.Text)); cmd.Parameters.Add(new SqlParameter("@OVER", TextBox6.Text)); int i = cmd.ExecuteNonQuery(); conn.Close(); if (i > 0) Response.Write("Data Inserted"); else Response.Write("Error");\[/code\]I need the where condition after inserting values but how will i put that condition ? I got control parameter in source side like this ;\[code\]<InsertParameters> <asp:ControlParameter ControlID="Textbox1" Name="date1" Type="DateTime" PropertyName="Text" /> <asp:ControlParameter ControlID="Textbox2" Name="date2" Type="DateTime" PropertyName="Text" /> <asp:ControlParameter ControlID="DropDownList1" Name="name1" Type="String" PropertyName="Text" /> </InsertParameters>\[/code\]Waiting your answers.