我是一名新的 ASP.NET 开发人员,我正在尝试开发一个简单的测验引擎,它允许系统管理员使用两个 ListViews 创建测验。第一个 ListView 用于插入测验标题和描述,第二个 ListView 用于插入问题、答案(不同数量的答案)、正确答案、答案说明、问题顺序。
我有以下数据库设计:
Quiz Table: QuizID, Title, Description
Question Table: QuestionID, Question, QuestionOrder, AnswerExplanation
QuestionImage Table: ID, QuestionID, URL
Answer Table: AnswerID, Answer
QuizContent Table: ID, QuizID, QuestionID, AnswerID
我让我对将第二个 ListView 与数据绑定感到困惑的要求:
- 每个测验都有不同数量的问题,每个问题都有不同数量的可能答案。例如,在其中一个测验中,我有两个问题。在第一个问题中,我有四个可能的答案,第二个问题将是 True or False 问题。
- 有些问题可能有一些图像。
这个 ListView 应该支持 CRUDE 操作。那么该怎么做呢?
我的第一个 ListView 的 ASP.NET 代码:
<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" Width="20px" runat="server" CommandName="Update" />
<asp:ImageButton ID="CancelButton" ImageUrl="Images/icons/cancel324.png" Width="20px" 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/create 2 48.png" Width="20px" runat="server" CommandName="Insert" />
<asp:ImageButton ID="CancelButton" ImageUrl="images/clear3.png" Width="20px" 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" Width="20px" runat="server" CommandName="Delete" />
<asp:ImageButton ID="EditButton" ImageUrl="Images/icons/edit224.png" Width="20px" runat="server" CommandName="Edit" />
<asp:ImageButton ID="SelectButton" ImageUrl="images/select.png" Width="20px" 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/delete24.png" Width="20px" runat="server" CommandName="Delete" />
<asp:ImageButton ID="EditButton" ImageUrl="images/edit224.png" Width="20px" 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>
我的第二个 ListView 代码:
<div align="center">
<asp:ListView ID="ListView2" runat="server" DataSourceID="SqlDataSource2"
DataKeyNames="QuestionID" InsertItemPosition="LastItem">
<EditItemTemplate>
<tr style="background-color: #FFCC66;color: #000080;">
<td>
<asp:ImageButton ID="UpdateButton" ImageUrl="Images/icons/update24.png" Width="20px" runat="server" CommandName="Update" />
<asp:ImageButton ID="CancelButton" ImageUrl="Images/icons/cancel324.png" Width="20px" 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") %>' CssClass="textbox" />
</td>
<td>
<asp:TextBox ID="Answer1TextBox" runat="server" Text='<%# Bind("Answer") %>' CssClass="textbox" />
</td>
<td>
<asp:TextBox ID="CorrectAnswerTextBox" runat="server"
Text='<%# Bind("CorrectAnswer") %>' CssClass="textbox" />
</td>
<td>
<asp:TextBox ID="AnswerExplanationTextBox" runat="server"
Text='<%# Bind("AnswerExplanation") %>' CssClass="textbox" />
</td>
<td>
<asp:TextBox ID="QuestionOrderTextBox" runat="server"
Text='<%# Bind("QuestionOrder") %>' CssClass="textbox" />
</td>
</tr>
</EditItemTemplate>
<EmptyDataTemplate>
<table id="Table2" runat="server"
style="background-color: #FFFFFF;border-collapse: collapse;border-color: #999999;border-style:none;border-width:1px;">
<tr>
<td>
No data was returned.</td>
</tr>
</table>
</EmptyDataTemplate>
<InsertItemTemplate>
<tr style="">
<td>
<asp:ImageButton ID="ImageButton1" ImageUrl="images/insert.png" Width="20px" runat="server" CommandName="Insert" />
<asp:ImageButton ID="CancelButton" ImageUrl="images/clear3.png" Width="20px" runat="server" CommandName="Cancel" />
</td>
<%--<td>
</td>--%>
<td>
<asp:TextBox ID="QuestionTextBox" runat="server" Text='<%# Bind("Question") %>' CssClass="textbox" />
</td>
<td>
<asp:TextBox ID="AnswerTextBox" runat="server" Text='<%# Bind("Answer1") %>' CssClass="textbox" />
</td>
<td>
<%-- to hide the bollon when mouse out, just add onmouseout="BalloonPopupControlBehavior.hidePopup(); --%>
<asp:TextBox ID="CorrectAnswerTextBox" runat="server" Text='<%# Bind("CorrectAnswer") %>' CssClass="textbox"/>
</td>
<td>
<asp:TextBox ID="AnswerExplanationTextBox" runat="server" Text='<%# Bind("AnswerExplanation") %>' CssClass="textbox" />
</td>
<td>
<asp:TextBox ID="QuestionOrderTextBox" runat="server" Text='<%# Bind("QuestionOrder") %>' CssClass="textbox" />
</td>
</tr>
<%-- --%>
<ajaxtoolkit:balloonpopupextender ID="BalloonPopupExtender1" runat="server"
TargetControlID="CorrectAnswerTextBox" BalloonPopupControlID="pnlBallon"
Position="BottomRight" BalloonStyle="Cloud" BalloonSize="Small"
CustomCssUrl="ballonPopupStyle"
CustomClassName="oval" UseShadow="true" ScrollBars="Auto"
DisplayOnMouseOver="false" DisplayOnFocus="true"
DisplayOnClick="true" >
</ajaxToolkit:BalloonPopupExtender>
<asp:Panel ID="pnlBallon" runat="server">
Please enter the letter of the correct answer A, B, C, D.
</asp:Panel>
</InsertItemTemplate>
<ItemTemplate>
<tr style="background-color: #FFFBD6;color: #333333;">
<td>
<asp:ImageButton ID="DeleteButton" ImageUrl="Images/icons/delete24.png" Width="20px" runat="server" CommandName="Delete" />
<asp:ImageButton ID="EditButton" ImageUrl="Images/icons/edit224.png" Width="20px" runat="server" CommandName="Edit" />
</td>
<td>
<asp:Label ID="QuestionLabel" runat="server" Text='<%# Eval("Question") %>' />
</td>
<td>
<asp:Label ID="Answer1Label" runat="server" Text='<%# Eval("Answer") %>' />
</td>
<td>
<asp:Label ID="CorrectAnswerLabel" runat="server"
Text='<%# Eval("CorrectAnswer") %>' />
</td>
<td>
<asp:Label ID="AnswerExplanationLabel" runat="server"
Text='<%# Eval("AnswerExplanation") %>' />
</td>
<td>
<asp:Label ID="QuestionOrderLabel" runat="server"
Text='<%# Eval("QuestionOrder") %>' />
</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; ">Answer</th>
<th style="border-bottom:2px solid #003366; ">Correct Answer</th>
<th style="border-bottom:2px solid #003366; ">Answer Explanation</th>
<th style="border-bottom:2px solid #003366; ">Question Order</th>
<th style="border-bottom:2px solid #003366; ">Image</th>
</tr>
</thead>
<tbody><tr id="itemPlaceholder" runat="server"></tr></tbody>
</table></div>
</LayoutTemplate>
<SelectedItemTemplate>
<tr style="background-color: #FFCC66;font-weight: bold;color: #000080;">
<td>
<asp:ImageButton ID="DeleteButton" ImageUrl="images/delete.png" Width="20px" runat="server" CommandName="Delete" />
<%--<asp:Button ID="DeleteButton" runat="server" CommandName="Delete"
Text="Delete" />--%>
<asp:ImageButton ID="EditButton" ImageUrl="images/edit.png" Width="20px" runat="server" CommandName="Edit" />
<%--<asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Edit" />--%>
</td>
<td>
<asp:Label ID="QuestionLabel" runat="server" Text='<%# Eval("Question") %>' />
</td>
<td>
<asp:Label ID="Answer1Label" runat="server" Text='<%# Eval("Answer") %>' />
</td>
<td>
<asp:Label ID="CorrectAnswerLabel" runat="server"
Text='<%# Eval("CorrectAnswer") %>' />
</td>
<td>
<asp:Label ID="AnswerExplanationLabel" runat="server"
Text='<%# Eval("AnswerExplanation") %>' />
</td>
<td>
<asp:Label ID="QuestionOrderLabel" runat="server"
Text='<%# Eval("QuestionOrder") %>' />
</td>
</tr>
</SelectedItemTemplate>
</asp:ListView>
</div>
</ContentTemplate>
</asp:UpdatePanel>
<asp:SqlDataSource ID="SqlDataSource2" runat="server"
ConnectionString="<%$ ConnectionStrings:QuizSysDBConnectionString %>"
SelectCommand="SELECT dbo.Question.Question, dbo.Question.QuestionOrder, dbo.Question.AnswerExplanation, dbo.Answers.Answer, dbo.QuestionImage.URL
FROM dbo.Question INNER JOIN
dbo.QuizContent ON dbo.Question.QuestionID = dbo.QuizContent.QuestionID INNER JOIN
dbo.Answers ON dbo.QuizContent.AnswerID = dbo.Answers.AnswerID INNER JOIN
dbo.Quiz ON dbo.QuizContent.QuizID = dbo.Quiz.QuizID LEFT OUTER JOIN
dbo.QuestionImage ON dbo.Question.QuestionID = dbo.QuestionImage.QuestionID
WHERE (dbo.QuizContent.QuizID = @QuizID)">
<SelectParameters>
<asp:ControlParameter ControlID="ListView1" Name="QuizID"
PropertyName="SelectedValue" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
</div>
我现在的问题是如何让管理员能够按照他的意愿输入具有不同数量答案的问题。有人可以帮我吗?