web site designing in asp.net

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ASP.NET

Helloo..

I want to insert data from a form to a database.I am using <asp:Formparameter> to insert. but i came to know that formparameter does not support validation.so what can i do now.Please help me out...

here is the code....

protected void btn_click(object sender, EventArgs e)
   {
       if (Page.IsValid)
       {

           srcusers.Insert();
           confirmmsg.Text = "Data Inserted";
       }
       else
       {
           confirmmsg.Text = "Fill carefully";
       }

   }

HTML:

<asp:DetailsView ID="DetailsView1" DataSourceID="srcusers"
               EmptyDataText="No Records present" AllowPaging="true"
              runat="server" Height="50px" Width="125px">
              </asp:DetailsView>

            <asp:SqlDataSource ID="srcusers"
             ConnectionString="<%$ ConnectionStrings:userdatabase %>"
             SelectCommand="SELECT * FROM Curr_Projects"
             InsertCommand="INSERT into Curr_Projects (Portcode,Portname,Proj_Id,Proj_Name,Description,Dateofissue,TargetToachieve,Estimatedcost)
                     VALUES (@Portcode,@Portname,@Proj_Id,@Proj_Name,@Description,@Dateofissue,@TargetToachieve,@Estimatedcost)"
                     runat="server">
                     <InsertParameters>
                        <asp:FormParameter Name="portcode" FormField="tpc" />
                        <asp:FormParameter Name="portname" FormField="tpn" />
                        <asp:FormParameter Name="Proj_id" FormField="tprojno"/>
                        <asp:FormParameter Name="Proj_Name" FormField="tprname" />
                        <asp:FormParameter Name="Description" FormField="tprdesc" />
                        <asp:FormParameter Name="dateofissue" FormField="tdateiss" Type="DateTime" />
                        <asp:FormParameter Name="TargetToachieve" FormField="ttg" />
                        <asp:FormParameter Name="Estimatedcost" FormField="test" />
                     </InsertParameters>
            </asp:SqlDataSource>