form view using sqldata source

<form id="form1" runat="server">
<div>
    <asp:Label ID="Label1" runat="server" Text="Please Enter your name here :"></asp:Label>
    <asp:TextBox ID="TextBox1" runat="server" Height="26px"
        ontextchanged="TextBox1_TextChanged" style="margin-left: 13px" Width="161px"></asp:TextBox>
    <asp:Button ID="Button1" runat="server" onclick="Button1_Click"
        style="margin-left: 13px" Text="Click Me" Width="108px" />
</div>
<asp:FormView ID="FormView1" runat="server" DataKeyNames="ID"
    DataSourceID="SqlDataSource1">
    <EditItemTemplate>
        ID:
        <asp:Label ID="IDLabel1" runat="server" Text='<%# Eval("ID") %>' />
        <br />
        Name:
        <asp:TextBox ID="NameTextBox" runat="server" Text='<%# Bind("Name") %>' />
        <br />
        <asp:LinkButton ID="UpdateButton" runat="server" CausesValidation="True"
            CommandName="Update" Text="Update" />
        &nbsp;<asp:LinkButton ID="UpdateCancelButton" runat="server"
            CausesValidation="False" CommandName="Cancel" Text="Cancel" />
    </EditItemTemplate>
    <InsertItemTemplate>
        ID:
        <asp:TextBox ID="IDTextBox" runat="server" Text='<%# Bind("ID") %>' />
        <br />
        Name:
        <asp:TextBox ID="NameTextBox" runat="server" Text='<%# Bind("Name") %>' />
        <br />
        <asp:LinkButton ID="InsertButton" runat="server" CausesValidation="True"
            CommandName="Insert" Text="Insert" />
        &nbsp;<asp:LinkButton ID="InsertCancelButton" runat="server"
            CausesValidation="False" CommandName="Cancel" Text="Cancel" />
    </InsertItemTemplate>
    <ItemTemplate>
        ID:
        <asp:Label ID="IDLabel" runat="server" Text='<%# Eval("ID") %>' />
        <br />
        Name:
        <asp:Label ID="NameLabel" runat="server" Text='<%# Bind("Name") %>' />
        <br />
    </ItemTemplate>
</asp:FormView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
    ConnectionString="<%$ ConnectionStrings:CPTempDBConnectionString %>"
    SelectCommand="SELECT * FROM [Student] WHERE ([Name] = @Name)">
    <SelectParameters>
        <asp:ControlParameter ControlID="TextBox1" Name="Name" PropertyName="Text"
            Type="String" />
    </SelectParameters>
</asp:SqlDataSource>
<asp:Label ID="Label2" runat="server" Text="Record Not Found"></asp:Label>
</form>

protected void Button1_Click(object sender, EventArgs e)
    {
        // Same thing can be done on button click event also
    }
    protected void TextBox1_TextChanged(object sender, EventArgs e)
    {
        if (TextBox1.Text != String.Empty)
        {
            FormView1.DataBind();
            if (FormView1.DataItemCount > 0 ) Label2.Visible = false;
            else Label2.Visible = true;
        }
        else
        {
            Label2.Visible = true;
        }
    }