detailsview中控件和数据源的问题

我用DetailsView显示医院的详细信息
医院表的字段：Hos_ID（医院编号），Hos_Type(医院类型),Hos_State(医院状态),Hos_Present（医院简介)
前两个字段用BoundField；
后两个字段用TemplateField；
医院状态字段：

             <asp:TemplateField HeaderText="医院状态" SortExpression="Hos_State">

                <EditItemTemplate>

                    <asp:DropDownList ID="ddlstate1" runat="server"  AutoPostBack="true"></asp:DropDownList>

                    <asp:HiddenField ID="fhstate1" runat="server" Value='<%# Eval("Hos_State")%>' />

                </EditItemTemplate>

                <InsertItemTemplate>

                    <asp:DropDownList ID="ddlstate2" runat="server"  AutoPostBack="true"></asp:DropDownList>

                </InsertItemTemplate>

                <ItemTemplate>

                    <asp:Label ID="lblstate" runat="server" Text='<%# Bind("Hos_State") %>'></asp:Label>

                </ItemTemplate>

            </asp:TemplateField>

医院简介字段：

             <asp:TemplateField HeaderText="医院简介" SortExpression="Hos_Present">

                <EditItemTemplate>

                    <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("Hos_Present") %>' TextMode="MultiLine"></asp:TextBox>

                </EditItemTemplate>

                <InsertItemTemplate>

                    <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("Hos_Present") %>' TextMode="MultiLine"></asp:TextBox>

                </InsertItemTemplate>

                <ItemTemplate>

                    <asp:Label ID="lblpre" runat="server" Text='<%# Bind("Hos_Present") %>'></asp:Label>

                </ItemTemplate>

            </asp:TemplateField>

绑定的数据源：

<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:reserveConnectionString %>"

        SelectCommand="SELECT * FROM T_GH_Hospital WHERE Hos_ID=@Hos_ID "

        >

        <SelectParameters>

            <asp:ControlParameter Name="Hos_ID" ControlID="GridView1" />

        </SelectParameters>

    </asp:SqlDataSource>

问题：
1.我如何写SqlDataSource2中的UpdateCommand/InsertCommand，应该设置哪些参数，怎么设置？
2.显示医院状态的两个DropDownList我在PreRender事件中绑定数据，但我进入编辑状态后，老是显示第一个索引，怎么选择都选不到别的索引，怎么回事？

protected void DetailsView1_PreRender(object sender, EventArgs e)

    {

        if (IsPostBack)

        {

            DetailsView detailsView = (DetailsView)sender;

            

            if (detailsView.CurrentMode == DetailsViewMode.Edit)

            {

                DropDownList dropDownList = (DropDownList)detailsView.FindControl("ddlstate1");

                dropDownList.Items.Clear();

                dropDownList.Items.Add(new ListItem("正常", "0"));

                dropDownList.Items.Add(new ListItem("暂停", "1"));

                dropDownList.Items.Add(new ListItem("冻结", "2"));

                switch (((HiddenField)detailsView.FindControl("fhstate1")).Value.ToString())

                {

                    case "正常":

                        dropDownList.SelectedIndex = 0;

                        break;

                    case "暂停":

                        dropDownList.SelectedIndex = 1;

                        break;

                    case "冻结":

                        dropDownList.SelectedIndex = 2;

                        break;

                    default:

                        break;

                }

            }

        } 

    }