C# Listview无法选择最后一行
我有一个asp.net ListView，当我单击select linkbutton选择行并将数据的id传递给detailsview时，我需要它。它传递除最后一条记录外的所有记录的id。有什么原因吗C# Listview无法选择最后一行,c#,visual-studio,listview,select,C#,Visual Studio,Listview,Select,我有一个asp.net ListView，当我单击select linkbutton选择行并将数据的id传递给detailsview时，我需要它。它传递除最后一条记录外的所有记录的id。有什么原因吗 <asp:ListView ID="ListView1" runat="server" DataKeyNames="AnswerID" OnSelectedIndexChanging="ListView1_SelectedIndexChanging"> <Empty
<asp:ListView ID="ListView1" runat="server" DataKeyNames="AnswerID" OnSelectedIndexChanging="ListView1_SelectedIndexChanging">
<EmptyDataTemplate>
<table runat="server" style="">
<tr>
<td>
No data was returned.
</td>
</tr>
</table>
</EmptyDataTemplate>
<ItemTemplate>
<tr style="">
<td>
<asp:LinkButton ID="SelectButton" runat="server" CommandName="Select" Text="Select" />
</td>
<td>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("AnswerID") %>'></asp:Label>
</td>
<td>
<asp:Label ID="Question" runat="server" Text='<%# Eval("QuestionText") %>' />
</td>
<td>
<asp:Label ID="UserAnswer" runat="server" Text='<%# Eval("UserAnswerTxt") %>' />
</td>
<td>
<asp:Label ID="CorrectAns" runat="server" Text='<%# Eval("CorrectAnswerTxt") %>' />
</td>
<td>
<asp:Image ID="Image1" ImageUrl='<%# Eval("ImagePath") %>' Width="48" Height="48"
runat="server" />
</td>
</tr>
</ItemTemplate>
<LayoutTemplate>
<table runat="server">
<tr runat="server">
<td runat="server">
<table id="itemPlaceholderContainer" runat="server" border="0" style="">
<tr runat="server" style="">
<th runat="server">
</th>
<th runat="server">
AnswerID
</th>
<th runat="server">
QuestionText
</th>
<th runat="server">
UserAnswerTxt
</th>
<th runat="server">
CorrectAnswerTxt
</th>
<th runat="server">
</th>
<th runat="server">
</th>
</tr>
<tr id="itemPlaceholder" runat="server">
</tr>
</table>
</td>
</tr>
<tr runat="server">
<td runat="server" style="">
</td>
</tr>
</table>
</LayoutTemplate>
<SelectedItemTemplate>
<tr style="">
<td>
<asp:LinkButton ID="SelectButton" runat="server" CommandName="Select" Text="Select" />
</td>
<td>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("AnswerID") %>'></asp:Label>
</td>
<td>
<asp:Label ID="Question" runat="server" Text='<%# Eval("QuestionText") %>' />
</td>
<td>
<asp:Label ID="UserAnswer" runat="server" Text='<%# Eval("UserAnswerTxt") %>' />
</td>
<td>
<asp:Label ID="CorrectAns" runat="server" Text='<%# Eval("CorrectAnswerTxt") %>' />
</td>
<td>
<asp:Image ID="Image1" ImageUrl='<%# Eval("ImagePath") %>' Width="48" Height="48"
runat="server" />
</td>
</tr>
</SelectedItemTemplate>
</asp:ListView>
<asp:DetailsView ID="DetailsView1" runat="server" Height="50px" Width="125px" AutoGenerateRows="False"
DataSourceID="SqlDataSource1">
<Fields>
<asp:BoundField DataField="AnswerID" HeaderText="AnswerID" SortExpression="AnswerID" />
<asp:BoundField DataField="AnswerExplanation" HeaderText="AnswerExplanation" SortExpression="AnswerExplanation" />
<asp:BoundField DataField="SuggestionText" HeaderText="SuggestionText" SortExpression="SuggestionText" />
<asp:BoundField DataField="LessonID" HeaderText="LessonID" SortExpression="LessonID" />
</Fields>
</asp:DetailsView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT [ErDiagID], [AnswerID], [LessonID], [AnswerExplanation], [SuggestionText] FROM [ErrorDiagnosis] WHERE ([AnswerID] = @AnswerID)">
<SelectParameters>
<asp:ControlParameter ControlID="ListView1" Name="AnswerID" PropertyName="SelectedValue"
Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
protected void Page_Load(object sender, EventArgs e)
{
Panel p = (Panel)Master.FindControl("Panel1");
if (p != null)
{
p.Visible = false;
}
ArrayList al = (ArrayList)Session["AnswerList"];
if (!Page.IsPostBack)
{
ListView1.DataBind();
}
if (al == null)
{
Response.Redirect("~/Default.aspx");
}
SqlConnection connection = null;
try
{
ListView1.DataSource = al;
//ListView1.SelectedIndex = ListView1.Items.Count - 1;
ListView1.DataBind();
//ListView1.SelectedIndex = ListView1.Items.Count - 1;
ListView1.SelectedIndex = -1;
if (IsPostBack == false)
{
double questions = al.Count;
double correct = 0.0;
for (int i = 0; i < al.Count; i++)
{
Answer a = (Answer)al[i];
if (a.Result == Answer.ResultValue.Correct)
{
correct++;
}
}
//foreach (ListViewItem item in resultGrid.Items)
//{
// Label cor = (Label)item.FindControl("CorrectAns");
// Label useran = (Label)item.FindControl("UserAnswer");
// if (cor.Text != useran.Text)
// {
// useran.Font.Bold = true;
// }
//}
double score = (correct / questions) * 100;
Scorelbl.Text = string.Format("{0:0.##}", score) + "%";
if (score >= 80 && score < 100)
{
resultext.Text = "Μπράβο " + Profile.UserName + "!!!";
}
connection = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
connection.Open();
SqlDataSource userQuizDataSource = new SqlDataSource();
userQuizDataSource.ConnectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ToString();
userQuizDataSource.InsertCommand = "INSERT INTO [UserQuiz] ([QuizID], [DateTimeComplete], [Score], [UserName]) VALUES (@QuizID, GETDATE(), @Score, @UserName)";
userQuizDataSource.InsertParameters.Add("QuizID", Session["QuizID"].ToString());
userQuizDataSource.InsertParameters.Add("Score", score.ToString());
userQuizDataSource.InsertParameters.Add("UserName", User.Identity.Name);
int rowsAffected = userQuizDataSource.Insert();
connection.Close();
if (rowsAffected == 0)
{
errorLabel.Text = "";
}
}
}
catch (Exception exp)
{
//throw new Exception(exp.ToString(), exp);
Response.Redirect("~/Default.aspx");
}
}
protected void ListView1_SelectedIndexChanging(object sender, ListViewSelectEventArgs e)
{
ListView1.SelectedIndex = e.NewSelectedIndex;
string id = ListView1.SelectedDataKey.Value.ToString();
SqlDataSource1.SelectParameters["AnswerID"].DefaultValue = id;
ListView1.DataBind();
}
没有返回任何数据。
回答
问题文本
用户应答器
更正应答器
受保护的无效页面加载（对象发送方、事件参数e）
{
Panel p=（Panel）Master.FindControl（“Panel1”）；
如果（p！=null）
{
p、 可见=假；
}
ArrayList al=（ArrayList）会话[“应答列表”]；
如果（！Page.IsPostBack）
{
ListView1.DataBind（）；
}
if（al==null）
{
Response.Redirect（“~/Default.aspx”）；
}
SqlConnection=null；
尝试
{
ListView1.DataSource=al；
//ListView1.SelectedIndex=ListView1.Items.Count-1；
ListView1.DataBind（）；
//ListView1.SelectedIndex=ListView1.Items.Count-1；
ListView1.SelectedIndex=-1；
如果（IsPostBack==false）
{
双重问题=全部计数；
双精度=0.0；
对于（int i=0；i=80&&分数<100）
{
resultText.Text=“Μπράβο”+Profile.UserName+“！！！”；
}
连接=新的SqlConnection（ConfigurationManager.ConnectionString[“ConnectionString”].ConnectionString）；
connection.Open（）；
SqlDataSource userQuizDataSource=新SqlDataSource（）；
userQuizDataSource.ConnectionString=ConfigurationManager.ConnectionString[“ConnectionString”].ToString（）；
userQuizDataSource.InsertCommand=“插入[userquick]（[QuizID]，[DateTimeComplete]，[Score]，[UserName]）值（@QuizID，GETDATE（），@Score，@UserName）”；
userQuizDataSource.InsertParameters.Add（“QuizID”，Session[“QuizID”].ToString（））；
userQuizDataSource.InsertParameters.Add（“Score”，Score.ToString（））；
userQuizDataSource.InsertParameters.Add（“用户名”，User.Identity.Name）；
int rowsAffected=userQuizDataSource.Insert（）；
connection.Close（）；
if（rowsAffected==0）
{
errorLabel.Text=“”；
}
}
}
捕获（异常扩展）
{
//抛出新异常（exp.ToString（），exp）；
Response.Redirect（“~/Default.aspx”）；
}
}
受保护的无效ListView1\u SelectedIndexChanged（对象发送者，ListViewSelectEventArgs e）
{
ListView1.SelectedIndex=e.NewsSelectedIndex；
字符串id=ListView1.SelectedDataKey.Value.ToString（）；
SqlDataSource1.SelectParameters[“AnswerID”]。DefaultValue=id；
ListView1.DataBind（）；
}
ListView1.SelectedIndex = e.NewSelectedIndex;
string id=ListView1.SelectedDataKey.Value.ToString();
//Then pass the id's value
ListView1.DataBind();
希望有帮助。ListView1.SelectedIndex=e.NewsSelectedIndex；字符串id=ListView1.SelectedDataKey.Value.ToString（）；SqlDataSource1.SelectParameters[“AnswerID”]。DefaultValue=id；ListView1.DataBind（）@Ophelia发布您的Listview标记，以及您的代码隐藏以获取更多信息。@Ophelia很高兴知道这一点。我的答案是否有帮助。也开始接受对您有帮助的答案。通过这样做，搜索相同问题的其他用户将受益。谢谢。@Ophelia OK:（最重要的是你至少得到了答案。我没有得到答案。我发布了我的代码，以防你看到它并找出错误所在。