fill the textbox with values in gridview

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
            onrowdatabound="GridView1_RowDataBound" >
            <Columns>
                 <asp:TemplateField HeaderText="First">
                    <ItemTemplate>
                        <asp:TextBox ID="TextBox1"  runat="server"></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Second">
                    <ItemTemplate>
                        <asp:DropDownList ID="ddl_BindValues" DataValueField="Name" runat="server">
                        </asp:DropDownList>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Third">
                    <ItemTemplate>
                       <asp:TextBox ID="TextBox2" Text='<%#Eval("id") %>' runat="server"></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Fourth">
                    <ItemTemplate>
                        <asp:TextBox ID="TextBox3" Text='<%#Eval("name") %>' runat="server"></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Fifth">
                    <ItemTemplate>
                       <asp:TextBox ID="TextBox4" Text='<%#Eval("Price") %>' runat="server"></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:CommandField ShowEditButton="True" HeaderText="Edit" />
            </Columns>
        </asp:GridView>

protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                BindGrid();
            }
        }
        public void BindGrid()
        {
            Con = new SqlConnection("Connection string");
            Con.Open();
             dt = new SqlDataAdapter("Select * from Your Table ", Con);
            DataSet ds = new DataSet();
            dt.Fill(ds);
            GridView1.DataSource = ds;
            GridView1.DataBind();
            Con.Close();
        }
        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                TextBox txt1 = (TextBox)e.Row.FindControl("TextBox1");
                txt1.Text = DateTime.Now.ToString();
            }
        }



<big>I hope now you can solve that</big></i>