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我正在使用FormView控件，並且我已經成功地獲得了除刪除以外的所有工作。因此，情況如下：如何在C＃中的FormView控件中刪除後續頁面
只要網頁首次打開網頁時加載該記錄，我就可以刪除窗體視圖顯示的任何記錄。如果我打開網頁，然後點擊頁面2,3,4等等，然後嘗試刪除其中一個記錄，或者即使我回到第一頁並嘗試刪除那個，我得到一個對象null參考。引用指的是我用作數據鍵的ID和用於刪除記錄的必需參數。在我看來，當我點擊不同的頁面時，綁定中沒有設置ID（<'％＃GoalID％>'）。
protected void goalsFormView_ItemDeleting(object sender, FormViewDeleteEventArgs e)
{
string strGoalID = e.Keys["GoalID"].ToString();
Guid goalID = new Guid(strGoalID);
string strTaskSetID = e.Keys["TaskSetID"].ToString();
Guid taskSetID = new Guid(strTaskSetID);
DeleteRecord(goalID, taskSetID); //call delete method
BindFormView(); //rebind details view to reflect changes made
}
<asp:FormView ID="goalsFormView" runat="server" AllowPaging="True"
CssClass="formView" DataKeyNames="GoalID, TaskSetID"
EmptyDataText="There is no data to display" HeaderText="Weekly Goals Form"
OnItemDeleting="goalsFormView_ItemDeleting"
OnItemUpdating="goalsFormView_ItemUpdating"
OnModeChanging="goalsFormView_ModeChanging"
OnPageIndexChanging="goalsFormView_PageIndexChanging">
<HeaderStyle BackColor="#1E3F7F" ForeColor="White" />
<ItemTemplate>
<table class="formView" style="width: 800px">
<tr>
<td>
Goal
</td>
<td style="width: 520px">
<asp:Label ID="weeklyGoalLabel" runat="server" Text='<%# Eval("WeeklyGoal") %>'></asp:Label>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td style="width: 520px">
</td>
<td>
</td>
</tr>
<tr>
<td>
Tasks
</td>
<td style="width: 520px">
</td>
<td>
Estimated Hours
</td>
</tr>
<tr>
<td>
</td>
<td style="width: 520px">
</td>
<td>
</td>
</tr>
<tr>
<td>
1.
</td>
<td style="width: 520px">
<asp:Label ID="taskLabel1" runat="server" Text='<%# Eval("Task1") %>'></asp:Label>
</td>
<td>
<asp:Label ID="estHours1" runat="server" CssClass="hours"
Text='<%# Eval("T1EstimatedHours") %>'></asp:Label>
</td>
</tr>
<tr>
<td>
2.
</td>
<td style="width: 520px">
<asp:Label ID="taskLabel2" runat="server" Text='<%# Eval("Task2") %>'></asp:Label>
</td>
<td>
<asp:Label ID="estHours2" runat="server" CssClass="hours"
Text='<%# Eval("T2EstimatedHours") %>'></asp:Label>
</td>
</tr>
<tr>
<td>
3.
</td>
<td style="width: 520px">
<asp:Label ID="taskLabel3" runat="server" Text='<%# Eval("Task3") %>'></asp:Label>
</td>
<td>
<asp:Label ID="estHours3" runat="server" CssClass="hours"
Text='<%# Eval("T3EstimatedHours") %>'></asp:Label>
</td>
</tr>
<tr>
<td>
4.
</td>
<td style="width: 520px">
<asp:Label ID="taskLabel4" runat="server" Text='<%# Eval("Task4") %>'></asp:Label>
</td>
<td>
<asp:Label ID="estHours4" runat="server" CssClass="hours"
Text='<%# Eval("T4EstimatedHours") %>'></asp:Label>
</td>
</tr>
<tr>
<td>
5.
</td>
<td style="width: 520px">
<asp:Label ID="taskLabel5" runat="server" Text='<%# Eval("Task5") %>'></asp:Label>
</td>
<td>
<asp:Label ID="estHours5" runat="server" CssClass="hours"
Text='<%# Eval("T5EstimatedHours") %>'></asp:Label>
</td>
</tr>
<tr>
<td>
</td>
<td style="width: 520px">
<asp:LinkButton ID="editButton" runat="server" CommandName="Edit">Edit</asp:LinkButton>
<asp:LinkButton ID="deleteButton" runat="server" CommandName="Delete">Delete</asp:LinkButton>
</td>
<td>
</td>
</tr>
<tr>
<td class="invisibleRows" style="width: 40px">
Goal ID
</td>
<td class="invisibleRows" style="width: 520px">
<asp:Label ID="GoalID" runat="server" Text='<%# Bind("GoalID") %>'></asp:Label>
</td>
<td class="invisibleRows">
</td>
</tr>
<tr>
<td class="invisibleRows">
Task Set ID
</td>
<td class="invisibleRows" style="width: 520px">
<asp:Label ID="TaskSetID" runat="server" Text='<%# Bind("TaskSetID") %>'></asp:Label>
</td>
<td class="invisibleRows">
</td>
</tr>
</table>
</ItemTemplate>
<EditItemTemplate>
<table class="formView" style="width: 800px">
<tr>
<td>
Goal
</td>
<td style="width: 520px">
<asp:TextBox ID="WeeklyGoalUpdateBox" runat="server" CssClass="goalsandtasks"
Text='<%# Bind("WeeklyGoal") %>'></asp:TextBox>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td style="width: 520px">
</td>
<td>
</td>
</tr>
<tr>
<td>
Tasks
</td>
<td style="width: 520px">
</td>
<td>
Estimated Hours
</td>
</tr>
<tr>
<td>
</td>
<td style="width: 520px">
</td>
<td>
</td>
</tr>
<tr>
<td>
1.
</td>
<td style="width: 520px">
<asp:TextBox ID="Task1UpdateBox" runat="server" CssClass="goalsandtasks"
Text='<%# Bind("Task1") %>'></asp:TextBox>
</td>
<td>
<asp:TextBox ID="estHours1UpdateBox" runat="server" CssClass="hours"
Text='<%# Bind("T1EstimatedHours") %>'></asp:TextBox>
</td>
</tr>
<tr>
<td>
2.
</td>
<td style="width: 520px">
<asp:TextBox ID="Task2UpdateBox" runat="server" CssClass="goalsandtasks"
Text='<%# Bind("Task2") %>'></asp:TextBox>
</td>
<td>
<asp:TextBox ID="estHours2UpdateBox" runat="server" CssClass="hours"
Text='<%# Bind("T2EstimatedHours") %>'></asp:TextBox>
</td>
</tr>
<tr>
<td>
3.
</td>
<td style="width: 520px">
<asp:TextBox ID="Task3UpdateBox" runat="server" CssClass="goalsandtasks"
Text='<%# Bind("Task3") %>'></asp:TextBox>
</td>
<td>
<asp:TextBox ID="estHours3UpdateBox" runat="server" CssClass="hours"
Text='<%# Bind("T3EstimatedHours") %>'></asp:TextBox>
</td>
</tr>
<tr>
<td>
4.
</td>
<td style="width: 520px">
<asp:TextBox ID="Task4UpdateBox" runat="server" CssClass="goalsandtasks"
Text='<%# Bind("Task4") %>'></asp:TextBox>
</td>
<td>
<asp:TextBox ID="estHours4UpdateBox" runat="server" CssClass="hours"
Text='<%# Bind("T4EstimatedHours") %>'></asp:TextBox>
</td>
</tr>
<tr>
<td>
5.
</td>
<td style="width: 520px">
<asp:TextBox ID="Task5UpdateBox" runat="server" CssClass="goalsandtasks"
Text='<%# Bind("Task5") %>'></asp:TextBox>
</td>
<td>
<asp:TextBox ID="estHours5UpdateBox" runat="server" CssClass="hours"
Text='<%# Bind("T5EstimatedHours") %>'></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
<td style="width: 520px">
<asp:LinkButton ID="updateButton" runat="server" CommandName="Update">Update</asp:LinkButton>
<asp:LinkButton ID="cancelButton" runat="server" CommandName="Cancel">Cancel</asp:LinkButton>
</td>
<td>
</td>
</tr>
<tr>
<td class="invisibleRows" style="width: 40px">
Goal ID
</td>
<td class="invisibleRows" style="width: 520px">
<asp:Label ID="GoalIDUpdateLabel" runat="server" Text='<%# Bind("GoalID") %>'></asp:Label>
</td>
<td class="invisibleRows">
</td>
</tr>
<tr>
<td class="invisibleRows">
Task Set ID
</td>
<td class="invisibleRows" style="width: 520px">
<asp:Label ID="TaskSetIDUpdateLabel" runat="server"
Text='<%# Bind("TaskSetID") %>'></asp:Label>
</td>
<td class="invisibleRows">
</td>
</tr>
</table>
</EditItemTemplate>
</asp:FormView>
如果回答您的問題，請將其標記爲已接受。這將您的問題從未回答的問題列表中解決。 – 2011-04-21 05:49:07