how to use click button inside the gridview

[taree]

what I am trying to do is that to capture the value of the value of the contract id from the returned rows and pass to the procedure. when the user click the link in the gridview the value of the contract id is passed to the procedur.

how can I do this.right now as you can see in the code I hard code the value in the procedure for testing. thank you for the help here is the hardcoded value "8826-63

  <asp:GridView ID="gvabstract" runat="server"       
                    AutoGenerateColumns="False"  
                    GridLines="None" 
                    CssClass="mGrid"                             
                    HorizontalAlign="Left"    
                    OnRowDataBound = "gvabstract_RowDataBound"                         
                    AlternatingRowStyle-CssClass="alt" Width="100%"
                    >  



      <Columns>

            <asp:BoundField  DataField="lettingdate" HeaderText="Letting Date"  >           
              <HeaderStyle Wrap="False" />
            <ItemStyle Wrap="False" />
            </asp:BoundField>
              <asp:TemplateField HeaderText="View Abstract">              
             <ItemTemplate>             
                  <asp:HyperLink ID="lnkUrl" runat="server"   Target="_blank" Text='<%# Eval(&quot;contractid&quot;,&quot;Abstract (PDF)&quot;) %>' > </asp:HyperLink>
             </ItemTemplate>
                  <HeaderStyle Wrap="False" />
                  <ItemStyle Wrap="False" />
             </asp:TemplateField>
               
             <asp:TemplateField HeaderText="View Abstract ">
                     <ItemTemplate>
                             <asp:LinkButton ID="lnk_CustomerID" Text='<%# Bind(&quot;contractid&quot;,&quot;Abstract (CSV)&quot; )%>' runat="server" OnClick="abstract_Click"></asp:LinkButton>
                     </ItemTemplate>
                     <HeaderStyle Wrap="False" />
                     <ItemStyle Wrap="False" />
            </asp:TemplateField>      
            <asp:BoundField  DataField="contractid" HeaderText="Contract Id"  >
             <HeaderStyle Wrap="False" />
            <ItemStyle Wrap="False" />
            </asp:BoundField>
             <asp:BoundField  DataField="projectnumber" HeaderText="S.P Number"  >
             <HeaderStyle Wrap="False" />
            <ItemStyle Wrap="False" />
            </asp:BoundField>
             <asp:BoundField  DataField="routenumber" HeaderText="Route Number"  >
            <HeaderStyle Wrap="False" />
            <ItemStyle Wrap="False" />
            </asp:BoundField>
            <asp:BoundField  DataField="statusdate" HeaderText="Posted Date"  >
            <HeaderStyle Wrap="False" />
            <ItemStyle Wrap="False" />
            </asp:BoundField>
            <asp:BoundField  DataField="jobdescription" HeaderText="Job Description" >            
            <HeaderStyle Wrap="False" />
            </asp:BoundField>
           <asp:BoundField  DataField="LOCATION" HeaderText="Location" >     
            <HeaderStyle Wrap="False" />
            </asp:BoundField>
      </Columns>
        
      
        <FooterStyle CssClass="alt" />      
        <AlternatingRowStyle CssClass="alt"></AlternatingRowStyle>
           
     </asp:GridView>

 Protected Sub abstract_Click(ByVal sender As Object, ByVal e As System.EventArgs)


        oOracleConn.Open()

        bidderItemPrice()
        Dim filename As String
        filename = "abstract.csv"
        Response.ContentType = "Application/x-csv"
        Response.AddHeader("content-disposition", "attachment;filename=""" & filename & """")
        Response.Write(sb.ToString)
        Response.End()
        oOracleConn.Close()



    End Sub
   
    Sub bidderItemPrice()

        Dim drbidderItemPrice As OracleDataReader
        Dim j As Integer = 0

        Dim cmdbidderItemPrice As OracleCommand = New OracleCommand()
        cmdbidderItemPrice.Connection = oOracleConn
        cmdbidderItemPrice.CommandType = CommandType.Text
        With cmdbidderItemPrice
            .Connection = oOracleConn
            .CommandText = "bid_items_price_quote"
            .CommandType = CommandType.StoredProcedure
            .Parameters.Clear()
        End With

        cmdbidderItemPrice.Parameters.Add(New OracleParameter("p_spnumber", OracleDbType.Varchar2)).Value = "8826-63"
        cmdbidderItemPrice.Parameters.Add(New OracleParameter("p_result", OracleDbType.RefCursor)).Direction = ParameterDirection.Output
        drbidderItemPrice = cmdbidderItemPrice.ExecuteReader()

        'For field name
        For j = 0 To drbidderItemPrice.FieldCount - 1
            If j < (drbidderItemPrice.FieldCount - 1) Then
                sb.Append(Chr(34) & drbidderItemPrice.GetName(j) & Chr(34) & ",")
            Else
                sb.Append(Chr(34) & drbidderItemPrice.GetName(j) & Chr(34) & vbCrLf)
            End If
        Next

        'For field value
        While drbidderItemPrice.Read()
            For j = 0 To drbidderItemPrice.FieldCount - 1
                If j < (drbidderItemPrice.FieldCount - 1) Then
                    sb.Append(Chr(34) & drbidderItemPrice.GetValue(j).ToString.Replace(Chr(34), Chr(34) & Chr(34)) & Chr(34) & ",")
                Else
                    sb.Append(Chr(34) & drbidderItemPrice.GetValue(j).ToString & Chr(34) & vbCrLf)
                End If
            Next
        End While
        sb.Append(vbCrLf)

    End Sub

 

[taree]

thank you all. I answered my own question