我是一名新的ASP.NET開發人員,我必須創建一個測驗引擎應用程序。我正在使用ListView在特定測驗下插入問題。如何在此ListView中插入用於插入其他內容的圖像?
我有以下的數據庫設計:
QuizContent Table: ID, QuizID, QuestionID, AnswerID
Quiz Table: QuizID, Title, Description
Question Table: QuestionID, Question, QuestionOrder, AnswerExplanation
Answers Table: AnswerID, Answer
QuestionImage: ID, QuestionID, URL
我現在想的是使管理員能夠將圖像使嵌入到這些問題的任何一個。 我該怎麼做,因爲我在數據庫中有兩個不同的表格?一個用於上述設計中顯示的問題和一個圖像。我有這個設計,因爲不是所有的問題都會有圖像。除此之外,我可能有兩個或三個問題或更多具有相同的圖像。
我知道我不應該張貼太多的代碼或信息,但我必須這樣做,要清楚:
<div align="center">
<asp:ListView ID="ListView2" runat="server" DataSourceID="SqlDataSource2"
DataKeyNames="QuestionID" InsertItemPosition="LastItem" OnSelectedIndexChanged="ListView2_SelectedIndexChanged">
<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="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>
<%--<td>
<asp:TextBox ID="UrlTextBox" runat="server" Text='<%# Bind("Url") %>' />
</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>
<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>
<%--<td>
<asp:FileUpload ID="ImageIDUploader" runat="server" size="10" />
</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" />
</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>
<%--<td>
<a href='<%# Eval("URL") %>' target="_blank">
<asp:Label ID="ImageURLlbl" runat="server" Text='<%# Eval("URL") %>' />
</a>
</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>
<th style="border-bottom:2px solid #003366; ">Image (URL)</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>
<%--<td>
<asp:Label ID="ImageURLlbl" runat="server"
Text='<%# Eval("URL") %>' />
</td>--%>
</tr>
</SelectedItemTemplate>
</asp:ListView>
</div>
<asp:SqlDataSource ID="SqlDataSource2" runat="server"
ConnectionString="<%$ ConnectionStrings:QuizSysDBConnectionString %>"
SelectCommand="SELECT QuestionID, Question, QuestionOrder, AnswerExplanation
FROM dbo.Question
WHERE (QuestionID IN
(SELECT DISTINCT QuestionID
FROM dbo.QuizContent
WHERE (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" DefaultValue="0"
PropertyName="SelectedValue" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
那麼怎麼辦呢?
由於我是新的ASP.NET開發人員,可否請您提供示例或代碼段? – 2012-07-25 06:42:43
剛剛編輯我的答案 – 2012-07-25 06:58:29
我可以使用SqlDataSource而不是ObjectDataSource嗎?此外,Image對象的QuestionID與您所假設的不一樣,所以它可以嗎? – 2012-07-25 07:02:19