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: 测验信息 问题信息(基于第一个ListView上的选定测验) 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
Quiz Table: QuizID, Title, Description
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关于测验信息的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>
</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>
</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 * FROM [Question]"
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>
</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 * FROM [Answers] WHERE 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。
更新
问题如下: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。此外,通过显示所有ListView控件,即使我在第一个ListView中选择了一个测验,我仍然会在第二个和第三个ListView控件中看到相同的内容,这些内容与第一个ListView中的选定测验无关不知道为什么。
更新#2: 现在,它适用于我,但我不知道为什么我在第二个ListView中两次(重复)获得所选测验的一组问题,如下所示:
答案 0 :(得分:1)
你几乎就在那里,因为你已经拥有这样的代码:
<SelectParameters>
<asp:ControlParameter ControlID="ListView1" Name="QuizID"
PropertyName="SelectedValue" Type="Int32" />
</SelectParameters>
这是将一个ListView与另一个ListView绑定所需的所有代码
您的问题是至少有两个UpdatePanels
,更新面板是允许在您的网页上进行部分呈现的控件。这意味着默认情况下,只有在发生异步回发时,更新面板下的控件才会刷新。
您需要做的是连接三个UpdatePanels
以强制刷新它们。为此,您需要向面板添加触发器:
在UpdatePanel1
面板中添加:
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ListView1" EventName="SelectedIndexChanged" />
</Triggers>
在UpdatePanel2
面板中添加:
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ListView2" EventName="SelectedIndexChanged" />
</Triggers>
基本上将父ListView.SelectedIndexChanged
根据您的评论,您的查询错误
这是我认为应该看起来的一个例子:
<强> SqlDataSource2 强>
<asp:SqlDataSource ID="SqlDataSource2" runat="server"
ConnectionString="<%$ ConnectionStrings:QuizSysDBConnectionString %>"
SelectCommand="SELECT [Question].* FROM [Question] INNER JOIN [QuizContent] ON [QuizContent].[QuizID] = @QuizID"
<强> SqlDataSource3 强>
<asp:SqlDataSource ID="SqlDataSource3" runat="server"
ConnectionString="<%$ ConnectionStrings:QuizSysDBConnectionString %>"
SelectCommand="SELECT [Answers].* FROM [Answers] INNER JOIN [QuizContent].QuestionID = @QuestionID"
我认为这些查询应该有效。说实话,你的设计不是传统的,同样的设计不会包含QuizContent
表(也许我错过了一些东西)。这个问题的传统设计如下:
Quiz Table: QuizID, Title, Description
Question Table: QuestionID, QuizID, Question, QuestionOrder, AnswerExplanation
Answers Table: AnswerID, QuestionID, Answer