Forms Data Controls :: Select / Insert Statements In Buttonfield In Gridview

A bit new to buttonfields in gridviews - Did a bit of research and most of the stuff I came up with had the gridviews with data bound like so :

[Code]....

private void BindGridControl()
{//method created so that the binded gridview can allow paging controls
DataTable dt = new DataTable();
try
{
/*Gridview requires another column either a checkbox or a hyperlink column that
* can drill down another level and load a page where user can edit the data/cheque
* Will place an exception here that will prompt a window to notify users that
there were no rows returned
*/
GridView1.Visible = true;
sqlConn.Open();
sqlSearch = "select store_nbr as [Store number],date as Date,data_type as [Data type],acct_1 as [Account 1], ";
sqlSearch += "amt_1 as [Amount 1],acct_2 as [Account 2],amt_2 as [Amount 2], ";
sqlSearch += "acct_3 as [Account 3], amt_3 as [Amount 3], cheque_nbr as [Cheque Number], ";
sqlSearch += "cheque_amt as [Cheque Amount], gst_hst as [GST/HST], qst as [QST],comments as [Comment] ";
sqlSearch += "from SimpData where store_nbr = '" + StoreNum + "'";
sqlCmd = new SqlCommand(sqlSearch, sqlConn);
SqlDataAdapter adapter = new SqlDataAdapter(sqlCmd);
adapter.Fill(dt);
if (dt.Rows.Count > 0)
{
//if there are rows returned bind the datasource to the gridview
GridView1.DataSource = dt;
GridView1.DataBind();
}
else
{
//label control notifies user that there are no rows found
lblResults.Text = "Search returned no rows";
}
My ButtonFields<Columns>
<asp:ButtonField ButtonType="Button" CommandName="Select" HeaderText="Select item"
ShowHeader="True" Text="Select1">
<ControlStyle Width="50px" />
<HeaderStyle Font-Size="XX-Small" />
</asp:ButtonField>
<asp:ButtonField ButtonType="Button" CommandName="Select" HeaderText="Select item"
ShowHeader="True" Text="Select2">
<ControlStyle Width="50px" />
<HeaderStyle Font-Size="XX-Small" />
</asp:ButtonField>
<asp:ButtonField ButtonType="Button" CommandName="Select" HeaderText="Select item "
ShowHeader="True" Text="Select3">
<ControlStyle Width="50px" />
<HeaderStyle Font-Size="XX-Small" />
</asp:ButtonField>
</Columns>

[Code]....