如何在第一个ListView中选择一行后显示(可见)第二个ListView?

时间:2012-07-24 07:50:12

标签: c# asp.net listview sql-server-2008-r2

我是一名新的ASP.NET开发人员,我必须创建一个测验引擎应用程序。我使用三个LiveView控件来显示:     1.测验信息     2.问题信息(基于第一个ListView上的选定测验)     3.回答信息(基于第二个ListView上的选定问题)

我有以下数据库设计:

QuizContent Table: ID, QuizID, QuestionID, AnswerID, isCorrect
Quiz Table: QuizID, Title, Description, isSent
Question Table: QuestionID, Question, QuestionOrder, AnswerExplanation
Answers Table: AnswerID, Answer

我现在想要的是:当用户(管理员)来到测验引擎页面时,他应该只看到第一个主要是测验信息的ListView。当他选择其中一个测验时,第二个ListView将显示所选测验的问题信息。当他选择其中一个问题时,将显示第三个ListView以及所选问题的答案信息。

那怎么做?

我知道我不应该发布过多的代码或信息,但我必须这样做才能说清楚:

<div align="center">
            <asp:ListView ID="ListView1" runat="server" DataKeyNames="QuizID" 
                DataSourceID="SqlDataSource1" InsertItemPosition="LastItem" >

                <EditItemTemplate>
                    <tr style="">
                        <td>
                            <asp:ImageButton ID="UpdateButton" ImageUrl="Images/icons/update24.png" ToolTip="Update"  runat="server" CommandName="Update" />

                            <asp:ImageButton ID="CancelButton" ImageUrl="Images/icons/cancel324.png" ToolTip="Cancel" runat="server" CommandName="Cancel" />
                        </td>
                        <td>
                            <asp:TextBox ID="TitleTextBox" runat="server" Text='<%# Bind("Title") %>' />
                        </td>
                        <td>
                            <asp:TextBox ID="DescriptionTextBox" runat="server" 
                                Text='<%# Bind("Description") %>' />
                        </td>
                    </tr>
                </EditItemTemplate>
                <EmptyDataTemplate>
                    <table id="Table1" runat="server" style="">
                        <tr>
                            <td>
                                No data was returned.</td>
                        </tr>
                    </table>
                </EmptyDataTemplate>
                <InsertItemTemplate>
                    <tr style="">
                        <td>
                            <asp:ImageButton ID="InsertButton" ImageUrl="Images/icons/add24.png" ToolTip="Add"  runat="server" CommandName="Insert" />

                            <asp:ImageButton ID="CancelButton" ImageUrl="Images/icons/clear24.png" ToolTip="Cancel"  runat="server" CommandName="Cancel" />
                        </td>

                        <%--<td>
                            &nbsp;</td>--%>
                        <td>
                            <asp:TextBox ID="TitleTextBox" runat="server" Text='<%# Bind("Title") %>' />
                        </td>
                        <td>
                            <asp:TextBox ID="DescriptionTextBox" runat="server" 
                                Text='<%# Bind("Description") %>' />
                        </td>
                    </tr>
                </InsertItemTemplate>
                <ItemTemplate>
                    <tr style="">
                        <td>
                            <asp:ImageButton ID="DeleteButton" ImageUrl="Images/icons/delete24.png" ToolTip="Delete"  runat="server" CommandName="Delete" />

                            <asp:ImageButton ID="EditButton" ImageUrl="Images/icons/edit24.png" ToolTip="Edit"  runat="server" CommandName="Edit" />

                            <asp:ImageButton ID="SelectButton" ImageUrl="Images/icons/select.png" ToolTip="Select"  runat="server" CommandName="Select" />
                            <%--<asp:Button ID="SelectButton" runat="server" CommandName="Select" Text="Select" />--%>
                        </td>
                        <%--<td>
                            <asp:Label ID="QuizIDLabel" runat="server" 
                                Text='<%# Eval("QuizID") %>' />
                        </td>--%>
                        <td>
                            <asp:Label ID="TitleLabel" runat="server" Text='<%# Eval("Title") %>' />
                        </td>
                        <td>
                            <asp:Label ID="DescriptionLabel" runat="server" 
                                Text='<%# Eval("Description") %>' />
                        </td>
                    </tr>
                </ItemTemplate>
                <LayoutTemplate>
                    <div ><table id="thetable" width="97%" cellpadding="0px" cellspacing="0px" style="margin:0px 0px 0px 0px; border:2px solid #003366; font-size:13px; font-weight:bold;">
                        <thead>
                            <tr style="background-color:#C6D7B5;">
                                <th style="border-bottom:2px solid #003366; ">...</th>
                                <th style="border-bottom:2px solid #003366; ">Title</th>
                                <th style="border-bottom:2px solid #003366; ">Description</th>
                            </tr>
                       </thead>
                       <tbody><tr id="itemPlaceholder" runat="server"></tr></tbody>
                    </table></div>
                </LayoutTemplate>
                <SelectedItemTemplate>
                    <tr style="">
                        <td>
                            <asp:ImageButton ID="DeleteButton" ImageUrl="Images/icons/delete24.png" ToolTip="Delete" runat="server" CommandName="Delete" />

                            <asp:ImageButton ID="EditButton" ImageUrl="Images/icons/edit24.png" ToolTip="Edit" runat="server" CommandName="Edit" />
                        </td>
                        <%--<td>
                            <asp:Label ID="QuizIDLabel" runat="server" 
                                Text='<%# Eval("QuizID") %>' />
                        </td>--%>
                        <td>
                            <asp:Label ID="TitleLabel" runat="server" Text='<%# Eval("Title") %>' />
                        </td>
                        <td>
                            <asp:Label ID="DescriptionLabel" runat="server" 
                                Text='<%# Eval("Description") %>' />
                        </td>
                    </tr>
                </SelectedItemTemplate>
            </asp:ListView>
            <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
                ConnectionString="<%$ ConnectionStrings:QuizSysDBConnectionString %>" 

                SelectCommand="SELECT * FROM [Quiz]" 
                DeleteCommand="DELETE FROM [Quiz] WHERE [QuizID] = @QuizID" 
                InsertCommand="INSERT INTO [Quiz] ([Title], [Description]) VALUES (@Title, @Description)" 


                UpdateCommand="UPDATE [Quiz] SET [Title] = @Title, [Description] = @Description WHERE [QuizID] = @QuizID">
                <DeleteParameters>
                    <asp:Parameter Name="QuizID" Type="Int32" />
                </DeleteParameters>
                <InsertParameters>
                    <asp:Parameter Name="Title" Type="String" />
                    <asp:Parameter Name="Description" Type="String" />
                </InsertParameters>
                <UpdateParameters>
                    <asp:Parameter Name="Title" Type="String" />
                    <asp:Parameter Name="Description" Type="String" />
                    <asp:Parameter Name="QuizID" Type="Int32" />
                </UpdateParameters>
            </asp:SqlDataSource>
    </div>

    <br /><br />

    <%--Second ListView that will contain the content of the quiz--%>
    <div align="center">
        <asp:ListView ID="ListView2" runat="server" DataSourceID="SqlDataSource2" 
            DataKeyNames="QuestionID" InsertItemPosition="LastItem">

            <EditItemTemplate>

                <tr style="">
                    <td>
                        <asp:ImageButton ID="UpdateButton" ImageUrl="Images/icons/update24.png" ToolTip="Update" runat="server" CommandName="Update" />

                        <asp:ImageButton ID="CancelButton" ImageUrl="Images/icons/cancel324.png" ToolTip="Cancel" runat="server" CommandName="Cancel" />
                    </td>
                    <%--<td>
                        <asp:Label ID="QuestionIDLabel1" runat="server" 
                            Text='<%# Eval("QuestionID") %>' />
                    </td>--%>
                    <td>
                        <asp:TextBox ID="QuestionTextBox" runat="server" 
                            Text='<%# Bind("Question") %>' />
                    </td>
                    <td>
                        <asp:TextBox ID="QuestionOrderTextBox" runat="server" 
                            Text='<%# Bind("QuestionOrder") %>' />
                    </td>
                    <td>
                        <asp:TextBox ID="AnswerExplanationTextBox" runat="server" 
                            Text='<%# Bind("AnswerExplanation") %>' />
                    </td>
                </tr>
            </EditItemTemplate>

            <EmptyDataTemplate>
                <table runat="server" 
                    style="">
                    <tr>
                        <td>
                            No data was returned.</td>
                    </tr>
                </table>
            </EmptyDataTemplate>

            <InsertItemTemplate>
                <tr style="">
                    <td>
                        <asp:ImageButton ID="InsertButton" ImageUrl="Images/icons/add24.png" ToolTip="Add" runat="server" CommandName="Insert" />

                        <asp:ImageButton ID="CancelButton" ImageUrl="Images/icons/clear24.png" ToolTip="Cancel"  runat="server" CommandName="Cancel" />
                    </td>
                    <%--<td>
                        &nbsp;</td>--%>
                    <td>
                        <asp:TextBox ID="QuestionTextBox" runat="server" 
                            Text='<%# Bind("Question") %>' />
                    </td>
                    <td>
                        <asp:TextBox ID="QuestionOrderTextBox" runat="server" 
                            Text='<%# Bind("QuestionOrder") %>'/>
                    </td>
                    <td>
                        <asp:TextBox ID="AnswerExplanationTextBox" runat="server" 
                            Text='<%# Bind("AnswerExplanation") %>' />
                    </td>
                </tr>

            </InsertItemTemplate>

            <ItemTemplate>
                <tr style="">
                    <td>
                        <asp:ImageButton ID="DeleteButton" ImageUrl="Images/icons/delete24.png" ToolTip="delete" runat="server" CommandName="Delete" />

                        <asp:ImageButton ID="EditButton" ImageUrl="Images/icons/edit24.png" ToolTip="Edit" runat="server" CommandName="Edit" />

                        <asp:ImageButton ID="SelectButton" ImageUrl="Images/icons/select.png" ToolTip="Select" runat="server" CommandName="Select" />
                            <%--<asp:Button ID="SelectButton" runat="server" CommandName="Select" Text="Select" />--%>
                    </td>
                    <td>
                        <asp:Label ID="QuestionLabel" runat="server" Text='<%# Eval("Question") %>' />
                    </td>
                    <td>
                        <asp:Label ID="QuestionOrderLabel" runat="server" 
                            Text='<%# Eval("QuestionOrder") %>' />
                    </td>
                    <td>
                        <asp:Label ID="AnswerExplanationLabel" runat="server" 
                            Text='<%# Eval("AnswerExplanation") %>' />
                    </td>
                </tr>
            </ItemTemplate>

            <LayoutTemplate>
                <div ><table id="thetable" width="97%" cellpadding="0px" cellspacing="0px" style="margin:0px 0px 0px 0px; border:2px solid #003366; font-size:13px; font-weight:bold;">
                        <thead>
                            <tr style="background-color:#C6D7B5;">
                                <th style="border-bottom:2px solid #003366; ">...</th>
                                <th style="border-bottom:2px solid #003366; ">Question</th>
                                <th style="border-bottom:2px solid #003366; ">Question Order</th>
                                <th style="border-bottom:2px solid #003366; ">Answer Explanation</th>
                            </tr>
                       </thead>
                       <tbody><tr id="itemPlaceholder" runat="server"></tr></tbody>
                    </table></div>     
            </LayoutTemplate>
            <SelectedItemTemplate>
                <tr style="">
                    <td>
                        <asp:ImageButton ID="DeleteButton" ImageUrl="Images/icons/delete24.png" ToolTip="Delete" runat="server" CommandName="Delete" />

                        <asp:ImageButton ID="EditButton" ImageUrl="Images/icons/edit24.png" ToolTip="Edit" runat="server" CommandName="Edit" />
                    </td>
                    <td>
                        <asp:Label ID="QuestionLabel" runat="server" Text='<%# Eval("Question") %>' />
                    </td>
                    <td>
                        <asp:Label ID="QuestionOrderLabel" runat="server" 
                            Text='<%# Eval("QuestionOrder") %>' />
                    </td>
                    <td>
                        <asp:Label ID="AnswerExplanationLabel" runat="server" 
                            Text='<%# Eval("AnswerExplanation") %>' />
                    </td>
                </tr>
            </SelectedItemTemplate>
        </asp:ListView>
        </div>

        <asp:SqlDataSource ID="SqlDataSource2" runat="server" 
            ConnectionString="<%$ ConnectionStrings:QuizSysDBConnectionString %>" 
            SelectCommand="SELECT [Question].* FROM [Question] INNER JOIN [QuizContent] ON [QuizContent].[QuizID] = @QuizID"

            DeleteCommand="DELETE FROM [Question] WHERE [QuestionID] = @QuestionID" 
            InsertCommand="INSERT INTO [Question] ([Question], [QuestionOrder], [AnswerExplanation]) VALUES (@Question, @QuestionOrder, @AnswerExplanation)" 


            UpdateCommand="UPDATE [Question] SET [Question] = @Question, [QuestionOrder] = @QuestionOrder, [AnswerExplanation] = @AnswerExplanation WHERE [QuestionID] = @QuestionID">

                <DeleteParameters>
                    <asp:Parameter Name="QuestionID" Type="Int32" />
                </DeleteParameters>
                <InsertParameters>
                    <asp:Parameter Name="Question" Type="String" />
                    <asp:Parameter Name="QuestionOrder" Type="Int32" />
                    <asp:Parameter Name="AnswerExplanation" Type="String" />
                    <asp:ControlParameter ControlID="ListView1" Name="QuizID" PropertyName="SelectedValue" Type="Int32" />
                </InsertParameters>
                <UpdateParameters>
                    <asp:Parameter Name="Question" Type="String" />
                    <asp:Parameter Name="QuestionOrder" Type="Int32" />
                    <asp:Parameter Name="AnswerExplanation" Type="String" />
                </UpdateParameters>

            <SelectParameters>
                <asp:ControlParameter ControlID="ListView1" Name="QuizID" 
                    PropertyName="SelectedValue" Type="Int32" />
            </SelectParameters>
        </asp:SqlDataSource>

        <br /><br />

    <%--Third ListView that will contain the content of the quiz--%>
    <div align="center">
        <asp:ListView ID="ListView3" runat="server" DataSourceID="SqlDataSource3" 
            DataKeyNames="AnswerID" InsertItemPosition="LastItem">

            <EditItemTemplate>

                <tr style="">
                    <td>
                        <asp:ImageButton ID="UpdateButton" ImageUrl="Images/icons/update24.png" ToolTip="Update" runat="server" CommandName="Update" />

                        <asp:ImageButton ID="CancelButton" ImageUrl="Images/icons/cancel324.png" ToolTip="Cancel" runat="server" CommandName="Cancel" />
                    </td>
                    <%--<td>
                        <asp:Label ID="AnswerIDLabel1" runat="server" Text='<%# Eval("AnswerID") %>' />
                    </td>--%>
                    <td>
                        <asp:TextBox ID="AnswerTextBox" runat="server" 
                            Text='<%# Bind("Answer") %>' />
                    </td>
                </tr>
            </EditItemTemplate>

            <EmptyDataTemplate>
                <table runat="server" 
                    style="">
                    <tr>
                        <td>
                            No data was returned.</td>
                    </tr>
                </table>
            </EmptyDataTemplate>

            <InsertItemTemplate>
                <tr style="">
                    <td>
                        <asp:ImageButton ID="InsertButton" ImageUrl="Images/icons/add24.png" ToolTip="Add" runat="server" CommandName="Insert" />

                        <asp:ImageButton ID="CancelButton" ImageUrl="Images/icons/clear24.png" ToolTip="Cancel" runat="server" CommandName="Cancel" />
                    </td>
                    <%--<td>
                        &nbsp;</td>--%>
                    <td>
                        <asp:TextBox ID="AnswerTextBox" runat="server" 
                            Text='<%# Bind("Answer") %>'/>
                    </td>
                </tr>

            </InsertItemTemplate>

            <ItemTemplate>
                <tr style="">
                    <td>
                        <asp:ImageButton ID="DeleteButton" ImageUrl="Images/icons/delete24.png" ToolTip="Delete" runat="server" CommandName="Delete" />

                        <asp:ImageButton ID="EditButton" ImageUrl="Images/icons/edit24.png" ToolTip="Edit" runat="server" CommandName="Edit" />
                    </td>
                    <%--<td>
                        <asp:Label ID="AnswerIDLabel" runat="server" Text='<%# Eval("AnswerID") %>' />
                    </td>--%>
                    <td>
                        <asp:Label ID="AnswerLabel" runat="server" Text='<%# Eval("Answer") %>' />
                    </td>
                </tr>
            </ItemTemplate>

            <LayoutTemplate>
                <div ><table id="thetable" width="97%" cellpadding="0px" cellspacing="0px" style="margin:0px 0px 0px 0px; border:2px solid #003366; font-size:13px; font-weight:bold;">
                    <thead>
                        <tr style="background-color:#C6D7B5;">
                            <th style="border-bottom:2px solid #003366; ">...</th>
                            <th style="border-bottom:2px solid #003366; ">Answer</th>
                        </tr>
                    </thead>
                    <tbody><tr id="itemPlaceholder" runat="server"></tr></tbody>
                </table></div>
            </LayoutTemplate>
            <SelectedItemTemplate>
                <tr style="">
                    <td>
                        <asp:ImageButton ID="DeleteButton" ImageUrl="Images/icons/delete24.png" ToolTip="Delete" runat="server" CommandName="Delete" />

                        <asp:ImageButton ID="EditButton" ImageUrl="Images/icons/edit24.png" ToolTip="Edit" runat="server" CommandName="Edit" />
                    </td>
                    <td>
                        <asp:Label ID="AnswerLabel" runat="server" 
                            Text='<%# Eval("Answer") %>' />
                    </td>
                </tr>
            </SelectedItemTemplate>
        </asp:ListView>
        </div>

        <asp:SqlDataSource ID="SqlDataSource3" runat="server" 
            ConnectionString="<%$ ConnectionStrings:QuizSysDBConnectionString %>" 
            SelectCommand="SELECT [Answers].* FROM [Answers] INNER JOIN [QuizContent] ON [QuizContent].QuestionID = @QuestionID"

            DeleteCommand="DELETE FROM [Answers] WHERE [AnswerID] = @AnswerID" 
            InsertCommand="INSERT INTO [Answers] ([Answer]) VALUES (@Answer)" 


            UpdateCommand="UPDATE [Answers] SET [Answer] = @Answer WHERE [AnswerID] = @AnswerID">
                <DeleteParameters>
                    <asp:Parameter Name="AnswerID" Type="Int32" />
                </DeleteParameters>
                <InsertParameters>
                    <asp:Parameter Name="Answer" Type="String" />
                    <asp:ControlParameter ControlID="ListView2" Name="QuestionID" PropertyName="SelectedValue" Type="Int32" />
                </InsertParameters>
                <UpdateParameters>
                    <asp:Parameter Name="Answer" Type="String" />
                </UpdateParameters>

            <SelectParameters>
                <asp:ControlParameter ControlID="ListView2" Name="QuestionID" 
                    PropertyName="SelectedValue" Type="Int32" />
            </SelectParameters>
        </asp:SqlDataSource>

注意: 我没有任何代码隐藏。问题又如下:当我运行代码时,我将看到三个ListView控件。它应该只显示其中一个。当用户选择其中一行时,将显示第二个ListView,依此类推第三个ListView。

更新

我尝试了以下方式,但它不能与我合作:

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            ListView1.SelectedIndex = -1;
        }
    }
    protected void ListView1_SelectedIndexChanged(object sender, EventArgs e)
    {
        ListView2.DataBind();
    }

2 个答案:

答案 0 :(得分:1)

像这样添加DataKey

 <asp:ListView ID="ListView1" runat="server" DataKeyNames="QuizID"  
    DataSourceID="SqlDataSource1" InsertItemPosition="LastItem" DataKeyNames="ID" > 

确保获取SQLDataSource中的ID

然后在Itemcommand中试试这个:

ListViewDataItem dataItem = (ListViewDataItem)e.Item;
 int ID = Convert.toInt32(ListView1.DataKeys[dataItem.DisplayIndex].Values[0]);

这是您的ID,现在您可以看到第二个列表视图并使用此ID填充第二个Listview

希望我帮助

答案 1 :(得分:0)

试试这个: 首先将ID放在第一个listview中的datakey中 然后在item命令中从datakey获取所选行的ID 然后,您可以使第二个列表视图可见,并使用此ID填充它 你可以对最后一个listview做同样的事情

不要忘记让第二个和最后一个列表视图显示为false,这样除非他在第一个列表视图中首先选择行,否则不会看到它们