1
表示にlistviewとdatapagerを使用しています。私はlistviewの2つのレベルを使用しています。内側のリストビュー項目は6つのタイプになります。自分のデータソースを使用します。私は1ページあたり1つの内側リストビューアイテムを表示する必要があります。各ページは正しく表示されますが、ページ番号が正しく設定されていません。たとえば、2番目のページ（他も同様）がクリックされた場合、1番目のページ番号が無効の場合は2番目のページ番号は無効になりません。ここでは、コードは次のとおりです。リストビューとデータページャでページ番号が正しく有効化されない理由
<div style="margin: 10px;">
<asp:ListView ID="rptExercise2" runat="server"
ItemPlaceholderID="itemPlaceHolder1" OnItemDataBound="ExerciseBound" OnPagePropertiesChanging="ChangeExercise">
<LayoutTemplate>
<asp:PlaceHolder ID="itemPlaceHolder1" runat="server" />
</LayoutTemplate>
<ItemTemplate>
<h2><asp:Label ID="lbName" runat="server" /></h2>
<asp:ListView ID="rptContent2" runat="server" ItemPlaceholderID="itemPlaceHolder2" OnItemDataBound="ContentBound">
<LayoutTemplate>
<asp:PlaceHolder ID="itemPlaceHolder2" runat="server" />
</LayoutTemplate>
<ItemTemplate>
<div style="padding: 5px;" >
<div>
<asp:Label ID="lbID" runat="server" Text='<%# Eval("ID") %>' Visible="false" />
<asp:Label ID="lbWrapper" runat="server" Text='<%# Eval("Wrapper") %>' Visible="false" />
<asp:Label ID="lbAudioQuestion" runat="server" Visible="false" />
<div style="text-align: right;"><asp:Label ID="lbAudioAnswer" runat="server" Visible="false" /></div>
<div style="text-align: right;"><asp:TextBox ID="tbAnswer" runat="server" TextMode="MultiLine" CssClass="tb" Width="50%" Height="60" Visible="false" /></div>
<div style="margin-left: 20px;"><asp:RadioButtonList ID="rblChoice" runat="server" Visible="false" /></div>
</div>
</div>
</ItemTemplate>
</asp:ListView>
<asp:Panel ID="pnFeedback" runat="server" Visible="false" CssClass="Feedback">
<div style="margin: 10px;">
<div style="float: left;">
Score: <br /><asp:TextBox ID="tbScore" runat="server" CssClass="tb" Width="40" />/<asp:Label ID="lbScore" runat="server" /></div>
</div>
<asp:Label ID="lbResultID" runat="server" Visible="false" />
<div style="float: left;">
Feedback<br />
<asp:TextBox ID="tbFeedback" runat="server" TextMode="MultiLine" CssClass="tb" Width="200" Height="60" />
</div>
<div style="float: left;">
Recording<br />
<asp:Label ID="lbFeedbackAudio" runat="server" />
</div>
<br style="clear: both;" />
</div>
</asp:Panel>
</ItemTemplate>
<EmptyItemTemplate>
<div>
Sorry, no exercise is found for this lesson.
</div>
</EmptyItemTemplate>
</asp:ListView>
<asp:DataPager ID="DataPager" runat="server" PagedControlID="rptExercise2"
PageSize="1">
<Fields>
<asp:NextPreviousPagerField ButtonType="Button" ShowFirstPageButton="True"
ShowNextPageButton="False" ShowPreviousPageButton="False" />
<asp:NumericPagerField ButtonCount="10" ButtonType="Button" />
<asp:NextPreviousPagerField ButtonType="Button" ShowLastPageButton="True"
ShowNextPageButton="False" ShowPreviousPageButton="False" />
</Fields>
</asp:DataPager>
public partial class MyPracClass : System.Web.UI.Page
{
// Current page number
int i = 0;
protected classLessons les;
protected classExercises exc;
protected List<classExercises> exercises;
protected void Page_Load(object sender, EventArgs e)
{
if (Request["LessonID"] == null)
{
return;
}
classLessons les = new classLessons(Convert.ToInt32(Request["LessonID"]));
exc = new classExercises();
exercises = exc.GetExercisesByLessonID(les.ID);
if (!IsPostBack)
{
lbLessonName.Text = les.Name;
lbDescription.Text = les.Description;
//SetPageNumber();
rptExercise2.DataSource = exercises;
rptExercise2.DataBind();
}
}
protected void ExerciseBound(object sender, ListViewItemEventArgs e)
{
if (e.Item.ItemType == ListViewItemType.DataItem)
{
ListViewDataItem item = (ListViewDataItem)e.Item;
Label lbName = (Label)item.FindControl("lbName");
string excName = "Exercise " + (i+1) + ": " + exercises[i].Subject;
lbName.Text = excName;
Label lbFeedbackAudio = (Label)item.FindControl("lbFeedbackAudio");
classContent ct = new classContent();
string test = "exercise" + exercises[i].ID + "student" + Session["StudentID"] + "feedback";
lbFeedbackAudio.Text = ct.GetPlayingString("exercise" + exercises[i].ID + "student" + Session["StudentID"] + "feedback");
ListView rptContent2 = (ListView)item.FindControl("rptContent2");
Panel pnFeedback = (Panel)item.FindControl("pnFeedback");
if (exercises[i] != null && rptContent2 != null)
{
classContent cct = new classContent();
rptContent2.DataSource = cct.GetContentByExerciseID(exercises[i].ID);
rptContent2.DataBind();
}
var result = new classResults();
result.GetResultByExerciseID(Convert.ToInt32(exercises[i].ID));
if (result.ID > 0)
{
pnFeedback.Visible = true;
Label lbID = (Label)item.FindControl("lbResultID");
Label lbScore = (Label)item.FindControl("lbScore");
lbScore.Text = exercises[i].Score.ToString();
TextBox tbScore = (TextBox)item.FindControl("tbScore");
TextBox tbFeedback = (TextBox)item.FindControl("tbFeedback");
lbID.Text = result.ID.ToString();
tbScore.Text = result.Score.ToString();
tbFeedback.Text = result.Feedback;
}
}
}
protected void ChangeExercise(object sender, PagePropertiesChangingEventArgs e)
{
// Get current page number
i = e.StartRowIndex/e.MaximumRows;
rptExercise2.DataSource = exercises;
rptExercise2.DataBind();
}
//protected void DataPager_PreRender(object sender, EventArgs e)
//{
// // Get current page number
// //i = e.StartRowIndex/e.MaximumRows;
// rptExercise2.DataSource = exercises;
// rptExercise2.DataBind();
//}
protected void ContentBound(object sender, ListViewItemEventArgs e)
{
if (e.Item.ItemType == ListViewItemType.DataItem)
{
ListViewDataItem dataItem = (ListViewDataItem)e.Item;
var qry = (classContent)dataItem.DataItem;
Label lbAudioQuestion = (Label)e.Item.FindControl("lbAudioQuestion");
Label lbAudioAnswer = (Label)e.Item.FindControl("lbAudioAnswer");
Label lbWrapper = (Label)e.Item.FindControl("lbWrapper");
TextBox tbAnswer = (TextBox)e.Item.FindControl("tbAnswer");
RadioButtonList rblChoice = (RadioButtonList)e.Item.FindControl("rblChoice");
switch (qry.Type)
{
case classContent.ContentType.AudioQuestion:
lbAudioQuestion.Visible = true;
lbAudioQuestion.Text = qry.GetPlayingString(qry.Wrapper);
break;
case classContent.ContentType.TextQuestion:
lbWrapper.Visible = true;
break;
case classContent.ContentType.VideoQuestion:
lbWrapper.Visible = true;
break;
case classContent.ContentType.AudioAnswer:
lbAudioAnswer.Visible = true;
lbAudioAnswer.Text = qry.GetRecordingString("content" + qry.ID + "student" + Session["StudentID"]);
break;
case classContent.ContentType.TextAnswer:
tbAnswer.Visible = true;
break;
case classContent.ContentType.ChoiceAnswer:
rblChoice.DataSource = qry.GetChoiceOptions(qry.ID);
rblChoice.DataTextField = "Value";
rblChoice.DataValueField = "IsAnswer";
rblChoice.DataBind();
rblChoice.Visible = true;
break;
default: break; ;
}
classAnswers ans = new classAnswers();
var contentAnswer = ans.GetAnswerByContentID(qry.ID);
if (contentAnswer.ID > 0)
{
switch (qry.Type)
{
case classContent.ContentType.TextAnswer:
tbAnswer.Text = contentAnswer.Answer;
break;
case classContent.ContentType.ChoiceAnswer:
rblChoice.SelectedIndex = Convert.ToInt32(contentAnswer.Answer);
break;
default: break; ;
}
}
}
}