asp.net - 在编辑模式下选择下拉列表时禁用详细信息视图中的字段

Question

  <asp:DetailsView ID="dvedit" runat="server" AutoGenerateRows="False" 
            EnableModelValidation="True" Height="50px" Width="932px" 
            onitemupdating="dvedit_ItemUpdating" 
            onmodechanging="dvedit_ModeChanging" DataKeyNames="Asset_ID" 
                CssClass="mGrid" ondatabound="dvedit_DataBound" >
            <Fields>
                <asp:CommandField ShowEditButton="True" CancelText="Cancel" EditText="Edit" 
                    UpdateText="Update" ValidationGroup="modify"/> 
                <asp:BoundField DataField="Asset_ID" HeaderText="Asset ID" >
                <HeaderStyle HorizontalAlign="Left" />

                <ItemStyle HorizontalAlign="Left" />

                                               <asp:BoundField DataField="Retention_Period" HeaderText="Retention Period" 
                    HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Backup_Type" HeaderText="Backup Type" 
                    HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Backup_Location" HeaderText="Backup Location" 
                    HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Backup_Software_Installed" 
                    HeaderText="Backup Software Installed" HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Asset_Value" HeaderText="Asset Value" 
                    HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Chassis_Name" HeaderText="Chassis Name" >
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="USB_Reliance" HeaderText="USB Reliance" >
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:TemplateField HeaderText="Purchase/Warranty/Lease Start Date(mm/dd/yyyy)">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtlsdate" runat="server" 
                            Text='<%# Bind("Start_Date","{0:MM/dd/yyyy}") %>'></asp:TextBox>
                            <asp:RegularExpressionValidator ID="rfvlsdate" runat="server" 
                            ErrorMessage="Lease Start Date should be in MM/dd/yyyy format" 
                            ControlToValidate="txtlsdate" ValidationGroup="modify" 
                            ValidationExpression="^([0]\d|[1][0-2])\/([0-2]\d|[3][0-1])\/([2][01]|[1][6-9])\d{2}(\s([0-1]\d|[2][0-3])(\:[0-5]\d){1,2})?$">*</asp:RegularExpressionValidator>
                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <asp:TextBox ID="TextBox8" runat="server" 
                            Text='<%# Bind("Start_Date","{0:MM/dd/yyyy}") %>'></asp:TextBox>
                    </InsertItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label8" runat="server" Text='<%# Bind("Start_Date","{0:MM/dd/yyyy}") %>'></asp:Label>
                    </ItemTemplate>
                    <HeaderStyle HorizontalAlign="Left" />
                    <ItemStyle HorizontalAlign="Left" />
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Warranty/Lease End Date(mm/dd/yyyy)">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtledate" runat="server" Text='<%# Bind("End_Date","{0:MM/dd/yyyy}") %>'></asp:TextBox>
                        <asp:RegularExpressionValidator ID="rfvledate" runat="server" 
                            ErrorMessage="Lease End Date should be in MM/dd/yyyy format" 
                            ControlToValidate="txtledate" ValidationGroup="modify" 
                            ValidationExpression="^([0]\d|[1][0-2])\/([0-2]\d|[3][0-1])\/([2][01]|[1][6-9])\d{2}(\s([0-1]\d|[2][0-3])(\:[0-5]\d){1,2})?$">*</asp:RegularExpressionValidator>
                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <asp:TextBox ID="TextBox9" runat="server" Text='<%# Bind("End_Date","{0:MM/dd/yyyy}") %>'></asp:TextBox>
                    </InsertItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label9" runat="server" Text='<%# Bind("End_Date","{0:MM/dd/yyyy}") %>'></asp:Label>
                    </ItemTemplate>
                    <HeaderStyle HorizontalAlign="Left" />
                    <ItemStyle HorizontalAlign="Left" />
                </asp:TemplateField>
                <asp:BoundField DataField="SLA_On_Hardware_Fail" 
                    HeaderText="SLA On H/W Failure" >
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Contact_Details_Of_Vendors" 
                    HeaderText="Contact Details Of Vendors" >
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Asset_Owner_Name" HeaderText="Asset Owner Name" 
                    HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:TemplateField HeaderText="Asset Owner EmailID">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtamail" runat="server" 
                            Text='<%# Bind("Asset_Owner_Email_ID") %>'></asp:TextBox>
                            <asp:RegularExpressionValidator ID="RegularExpressionValidator2" 
                            runat="server" ErrorMessage="Please enter valid email for Asset Owner" 
                            ValidationGroup="modify" ControlToValidate="txtamail"  
                            ValidationExpression="^[A-Za-z0-9](([_\.\-]?[a-zA-Z0-9]+)*)@([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})$">*</asp:RegularExpressionValidator>
                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <asp:TextBox ID="TextBox24" runat="server" 
                            Text='<%# Bind("Asset_Owner_Email_ID") %>'></asp:TextBox>
                    </InsertItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label24" runat="server" 
                            Text='<%# Bind("Asset_Owner_Email_ID") %>'></asp:Label>
                    </ItemTemplate>
                    <HeaderStyle HorizontalAlign="Left" />
                    <ItemStyle HorizontalAlign="Left" />
                </asp:TemplateField>
                <asp:BoundField DataField="Asset_Owner_Contact_No" 
                    HeaderText="Asset Owner Contact Number" HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Asset_Owner_Department_Unit" 
                    HeaderText="Asset Owner Department" HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Service_Owner_Name" 
                    HeaderText="Service Owner Name" HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Service_Owner_Contact_No" 
                    HeaderText="Service Owner Contact Number" 
                    HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:TemplateField HeaderText="Service Owner EmailID">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtsemail" runat="server" 
                            Text='<%# Bind("Service_Owner_Email_ID") %>'></asp:TextBox>

                            <%--<asp:RegularExpressionValidator ID="RegularExpressionValidator1" 
                            runat="server" ErrorMessage="Please enter valid email for Service Owner " 
                            ValidationGroup="modify" ControlToValidate="txtsemail"  
                            ValidationExpression="^[A-Za-z0-9](([_\.\-]?[a-zA-Z0-9]+)*)@([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})$">*</asp:RegularExpressionValidator>--%>
                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <asp:TextBox ID="TextBox25" runat="server" 
                            Text='<%# Bind("Service_Owner_Email_ID") %>'></asp:TextBox>
                    </InsertItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label25" runat="server" 
                            Text='<%# Bind("Service_Owner_Email_ID") %>'></asp:Label>
                    </ItemTemplate>
                    <HeaderStyle HorizontalAlign="Left" />
                    <ItemStyle HorizontalAlign="Left" />
                </asp:TemplateField>
                <asp:BoundField DataField="Service_Owner_Department_Unit" 
                    HeaderText="Service Owner Department" HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Criticality" HeaderText="Criticality" 
                    HeaderStyle-HorizontalAlign="Left">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Asset_Transfer_Consideration" HeaderText="Transfer Consideration" 
                    HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="AMC_Warranty_Details" HeaderText="AMC/Warranty Details" 
                    HeaderStyle-HorizontalAlign="Left">
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:TemplateField HeaderText="Refresh Date">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtenddate" runat="server" 
                            Text='<%# Bind("Refresh_Date","{0:MM/dd/yyyy}") %>'></asp:TextBox>
                        <%--<asp:RegularExpressionValidator ID="rfvenddate" runat="server" 
                            ControlToValidate="txtenddate" 
                            ErrorMessage="Warranty End Date should be in YYYY-MM-DD format" 
                            ValidationExpression="^[0-9]{4}-(((0[13578]|(10|12))-(0[1-9]|[1-2][0-9]|3[0-1]))|(02-(0[1-9]|[1-2][0-9]))|((0[469]|11)-(0[1-9]|[1-2][0-9]|30)))$" 
                            ValidationGroup="modify">*</asp:RegularExpressionValidator>--%>
                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <asp:TextBox ID="TextBox16" runat="server" 
                            Text='<%# Bind("Refresh_Date","{0:MM/dd/yyyy}") %>'></asp:TextBox>
                    </InsertItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label16" runat="server" 
                            Text='<%# Bind("Refresh_Date","{0:MM/dd/yyyy}") %>'></asp:Label>
                    </ItemTemplate>
                    <HeaderStyle HorizontalAlign="Left" />
                    <ItemStyle HorizontalAlign="Left" />
                </asp:TemplateField>
                <asp:BoundField DataField="Server_Category" HeaderText="Server Category" 
                    HeaderStyle-HorizontalAlign="Left">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Upgraded_Category" HeaderText="Upgraded Category" 
                    HeaderStyle-HorizontalAlign="Left">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Year_Of_Refresh" HeaderText="Years Of Refresh" 
                    HeaderStyle-HorizontalAlign="Left">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Monthly_Refresh" HeaderText="Monthly Refresh">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Method" HeaderText="Method">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Approach" HeaderText="Approach">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Target_State_Location" 
                    HeaderText="Target State Location">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                                <asp:BoundField DataField="To_Be_Backup_Location" 
                    HeaderText="To Be Backup Location">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:TemplateField HeaderText="Transformation Planned Start Date">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtplanstartdate" runat="server" Text='<%# Bind("Planned_StartDate") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <asp:TextBox ID="TextBox10" runat="server" 
                            Text='<%# Bind("Planned_StartDate") %>'></asp:TextBox>
                    </InsertItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label10" runat="server" Text='<%# Bind("Planned_StartDate") %>'></asp:Label>
                    </ItemTemplate>
                    <HeaderStyle HorizontalAlign="Left" />
                    <ItemStyle HorizontalAlign="Left" />
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Transformation Planned End Date">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtplanenddate" runat="server" Text='<%# Bind("Planned_EndDate") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <asp:TextBox ID="TextBox12" runat="server" 
                            Text='<%# Bind("Planned_EndDate") %>'></asp:TextBox>
                    </InsertItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label12" runat="server" Text='<%# Bind("Planned_EndDate") %>'></asp:Label>
                    </ItemTemplate>
                    <HeaderStyle HorizontalAlign="Left" />
                    <ItemStyle HorizontalAlign="Left" />
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Transformation Actual Start Date">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtactualstartdate" runat="server" 
                            Text='<%# Bind("Actual_StartDate") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <asp:TextBox ID="TextBox13" runat="server" 
                            Text='<%# Bind("Actual_StartDate") %>'></asp:TextBox>
                    </InsertItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label13" runat="server" Text='<%# Bind("Actual_StartDate") %>'></asp:Label>
                    </ItemTemplate>
                    <HeaderStyle HorizontalAlign="Left" />
                    <ItemStyle HorizontalAlign="Left" />
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Transformation Actual End Date">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtactualenddate" runat="server" Text='<%# Bind("Actual_EndDate") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <asp:TextBox ID="TextBox14" runat="server" Text='<%# Bind("Actual_EndDate") %>'></asp:TextBox>
                    </InsertItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label14" runat="server" Text='<%# Bind("Actual_EndDate") %>'></asp:Label>
                    </ItemTemplate>
                    <HeaderStyle HorizontalAlign="Left" />
                    <ItemStyle HorizontalAlign="Left" />
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Current State of Transformation">
                    <ItemTemplate>
                        <asp:Label ID="Label15" runat="server" Text='<%# Bind("Current_Status") %>'></asp:Label>
                    </ItemTemplate>
                    <EditItemTemplate>
                        <asp:DropDownList DataTextField="Current_Status" DataValueField="Current_Status" 
                            ID="ddlcurrentstatus" Runat="server" 
                            SelectedValue='<%# Bind("Current_Status") %>' AppendDataBoundItems="True" >
                <asp:ListItem></asp:ListItem>           
               <asp:ListItem Value="NA">NA</asp:ListItem>
               <asp:ListItem>WIP</asp:ListItem>
               <asp:ListItem>Closed</asp:ListItem>
               <asp:ListItem>Not Yet Started</asp:ListItem>
               <%--<asp:ListItem>SE Owned</asp:ListItem>
               <asp:ListItem>TCL Outsourced</asp:ListItem>--%>
            </asp:DropDownList>



                    </EditItemTemplate>
                    <InsertItemTemplate>
                        <asp:TextBox ID="TextBox15" runat="server" Text='<%# Bind("Current_Status") %>'></asp:TextBox>
                    </InsertItemTemplate>
                    <HeaderStyle HorizontalAlign="Left" />
                    <ItemStyle HorizontalAlign="Left" />
                </asp:TemplateField>
                <asp:BoundField DataField="Transformed_Asset_id" 
                    HeaderText="Transformed AssetID">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Transformation_Owners" 
                    HeaderText="Transformation Owner ">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Reasonfor_Dealy" 
                    HeaderText="Reason for Dealy of Transformation">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Serveronboard_Status" 
                    HeaderText="Server Onboard Status">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
                <asp:BoundField DataField="Remarks" HeaderText="Remarks">
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                <HeaderStyle HorizontalAlign="Left" />
                <ItemStyle HorizontalAlign="Left" />
                </asp:BoundField>
            </Fields>
        </asp:DetailsView>

这是我的完整代码，它非常大。现在当我选择转换的当前状态为关闭时，应该启用转换后的资产 ID，否则应该禁用它。请在这方面帮助我。