新闻发布系统（增删改页面）控件ID

[HttpException (0x80004005): “DetailsView1”的 DataSourceID 必须是 IDataSource 类型的控件的 ID。未能找到 ID 为“SqlSource”的控件。]
关键是这里！你看看你的DetailsView1 的datasource绑定的是什么！确认是否正确
http://blog.csdn.net/robaot/archive/2009/09/28/4603305.aspx
http://www.cnblogs.com/aaa6818162/archive/2009/05/07/1452016.html
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="newsAdminDetail.aspx.cs" Inherits="newsAdminDetail" validateRequest="false"  %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>新闻公告系统-管理 </title>
    <link href="style.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <a class="nav" href="newsAdmin.aspx">回到管理主页面 </a> 
                                            <asp:LoginStatus ID="LoginStatus2" runat="server" CssClass="nav" LogoutAction="Redirect" LogoutPageUrl="~/news.aspx" />
                                                </td>
                                    </tr>
                                    <tr style="font-size: 12pt; color: #000000">
                                        <td>
                                            <img alt="" border="0" height="15" name="newsCenter_r3_c2" src="image/newsCenter_r3_c2.jpg"
                                                width="452" /> </td>
                                    </tr>
                                </table>
                            </td>
                        </tr>
                    </table>
                </td>
            </tr>
            <tr style="font-size: 12pt; color: #000000">
                <td align="center" background="images/newsCenter_r4_c1.jpg" style="width: 644px">
                    <asp:LoginView ID="LoginView1" runat="server">
                        <AnonymousTemplate>
                            <br />
                            <img src="image/shou.jpg" />请您先执行
                            <asp:LoginStatus ID="LoginStatus1" runat="server" />
                            操作！ <br />
                            <br />
                        </AnonymousTemplate>
                        <LoggedInTemplate>
                            <asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" BorderWidth="0px"
                                Caption="新闻数据管理" CellPadding="4" CellSpacing="1" CssClass="forumline" DataKeyNames="news_id"
                                DataSourceID="SqlSource" DefaultMode="Edit" Height="50px" Width="95%">
                                <CommandRowStyle HorizontalAlign="Center" />
                                <RowStyle CssClass="row1" HorizontalAlign="Left" />
                                <Fields>
                                    <asp:TemplateField HeaderText="类别">
                                        <EditItemTemplate>
                                            <asp:DropDownList ID="DropDownList1" runat="server" SelectedValue=' <%# Bind("news_type") %>'>
                                                <asp:ListItem Selected="True">政治 </asp:ListItem>
                                                <asp:ListItem>经济 </asp:ListItem>
                                    <asp:ListItem>文体 </asp:ListItem>
                                    <asp:ListItem>生活 </asp:ListItem>
                                    <asp:ListItem>其他 </asp:ListItem>
                                            </asp:DropDownList>
                                        </EditItemTemplate>
                                        <InsertItemTemplate>
                                            <asp:DropDownList ID="DropDownList2" runat="server" SelectedValue=' <%# Bind("news_type") %>'>
                                                <asp:ListItem Selected="True">政治 </asp:ListItem>
                                                <asp:ListItem>经济 </asp:ListItem>
                                    <asp:ListItem>文体 </asp:ListItem>
                                    <asp:ListItem>生活 </asp:ListItem>
                                    <asp:ListItem>其他 </asp:ListItem>
                                            </asp:DropDownList>
                                        </InsertItemTemplate>
                                    </asp:TemplateField>
                                    <asp:TemplateField HeaderText="日期">
                                        <EditItemTemplate>
                                            <asp:TextBox ID="TextBox1" runat="server" Text=' <%# Bind("news_date") %>'> </asp:TextBox>
                                        </EditItemTemplate>
                                        <InsertItemTemplate>
                                            <asp:Label ID="Label1" runat="server" Text=" <%# System.DateTime.Now %>"> </asp:Label>
                                        </InsertItemTemplate>
                                    </asp:TemplateField>
                                    <asp:BoundField DataField="news_subject" HeaderText="标题" SortExpression="news_subject" />
                                    <asp:BoundField DataField="news_editor" HeaderText="编辑者" SortExpression="news_editor" />
                                    <asp:TemplateField HeaderText="内容">
                                        <EditItemTemplate>
                                            <asp:TextBox ID="TextBox2" runat="server" Height="100px" Text=' <%# Bind("news_content") %>'
                                                TextMode="MultiLine" Width="450px"> </asp:TextBox>
                                        </EditItemTemplate>
                                        <InsertItemTemplate>
                                            <asp:TextBox ID="TextBox3" runat="server" Height="100px" TextMode="MultiLine" Width="450px" Text=' <%# Bind("news_content") %>'> </asp:TextBox>
                                        </InsertItemTemplate>
                                    </asp:TemplateField>
                                    <asp:CommandField ShowEditButton="True" ShowInsertButton="True" />
                                </Fields>
                                <AlternatingRowStyle CssClass="row2" />
                            </asp:DetailsView>
                        </LoggedInTemplate>
                    </asp:LoginView>
                </td>
            </tr>
            <tr style="font-size: 12pt; color: #000000">
                <td style="height: 27px; width: 644px;">
                    </td>
            </tr>
        </table>
    </div>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString=" <%$ ConnectionStrings:ConnectionString %>"
            SelectCommand="SELECT * FROM [news] WHERE ([news_id] = ?)"
            OnInserted="SqlDataSource1_Inserted"
            OnUpdated="SqlDataSource1_Updated"
            DeleteCommand="DELETE FROM [news] WHERE [news_id] = ?"
            InsertCommand="INSERT INTO [news] ( [news_type], [news_subject], [news_content], [news_editor]) VALUES ( ?, ?, ?, ?)"
            UpdateCommand="UPDATE [news] SET [news_type] = ?, [news_date] = ?, [news_subject] = ?, [news_content] = ?, [news_editor] = ? WHERE [news_id] = ?">
            <SelectParameters>
                <asp:QueryStringParameter Name="news_id" QueryStringField="news_id" Type="Int32" />
            </SelectParameters>
            <DeleteParameters>
                <asp:Parameter Name="news_id" Type="Int32" />
            </DeleteParameters>
            <UpdateParameters>
                <asp:Parameter Name="news_type" Type="String" />
                <asp:Parameter Name="news_date" Type="DateTime" />
                <asp:Parameter Name="news_subject" Type="String" />
                <asp:Parameter Name="news_content" Type="String" />
                <asp:Parameter Name="news_editor" Type="String" />
                <asp:Parameter Name="news_id" Type="Int32" />
            </UpdateParameters>
            <InsertParameters>
                <asp:Parameter Name="news_type" Type="String" />
                <asp:Parameter Name="news_subject" Type="String" />
                <asp:Parameter Name="news_content" Type="String" />
                <asp:Parameter Name="news_editor" Type="String" />
            </InsertParameters>
        </asp:SqlDataSource>
    </form>
</body>
</html> 就这处DataSourceID="SqlSource"红线标记的,应改为DataSourceID = "SqlDataSource1"

调试易

新闻发布系统（增删改页面）控件ID

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