我在更新面板中有一个转发器，如下所示
<form id="frmQuestion" action="AddQuestion.aspx">
<div class="panel">
<asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<div class="panel-body" style="max-height: 420;overflow-y: scroll; border:1px solid Blue">
<asp:Repeater ID="rptQuestions" runat="server">
<HeaderTemplate>
<table class="table" cellpadding="5px" cellspacing="10px" border="solid" id="tableQuestion">
<tr style="color: Black; background-color: Teal; border: solid;">
<th style="width: 20px">No.</th>
<th style="width: 100px">Question</th>
<th style="width: 40px">QuestionType</th>
<th style="width: 110px">Text Answer</th>
<th style="width: 100px">Multiple Choice 1</th>
<th style="width: 100px">Multiple Choice 2</th>
<th style="width: 100px">Multiple Choice 3</th>
<th style="width: 100px">Multiple Choice 4</th>
<th style="width: 70px">True/False</th>
<th>Controls</th>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr style="color: Black; background-color: Silver; border: solid;" id="trdata" class="trclass">
<td id="no">
<asp:Label runat="server" ID="lblNo" Text='<%#Eval("Qno") %>' /></td>
<td id="que">
<asp:Label runat="server" ID="lblQuestion" Text='<%#Eval("Question") %>'></asp:Label>
<asp:TextBox runat="server" ID="txtQuestion" Text='<%#Eval("Question") %>' Visible="false"></asp:TextBox>
<asp:Label runat="server" ID="lblQid" Text='<%#Eval("Qid") %>'></asp:Label></td>
<td>
<asp:Label runat="server" ID="lblQtype" Text='<%#Eval("Qtype") %>'></asp:Label>
<asp:DropDownList runat="server" ID="ddlQType" Visible="false"></asp:DropDownList>
<%-- <select class="dropdown" id="ddlQType" name="ddlQType" style="width:100px" runat="server">
<option value="0">--Select--</option>
<option value="1">Descriptive Answer</option>
<option value="2">Multiple Choice </option>
<option value="3">True/False answer</option></select>--%></td>
<td>
<asp:Label runat="server" ID="lblAnsDesc" Text='<%#Eval("description") %>' Width="100px"></asp:Label>
<asp:TextBox runat="server" ID="txtAnsDesc" Text='<%#Eval("description") %>' Width="100px" Visible="false"></asp:TextBox></td>
<td>
<asp:Label runat="server" ID="lblch1" Text='<%#Eval("choice1") %>' Width="100px"></asp:Label>
<asp:TextBox runat="server" ID="txtch1" Text='<%#Eval("choice1") %>' Width="100px" Visible="false"></asp:TextBox></td>
<td>
<asp:Label runat="server" ID="lblch2" Text='<%#Eval("choice2") %>' Width="100px"></asp:Label>
<asp:TextBox runat="server" ID="txtch2" Text='<%#Eval("choice2") %>' Width="100px" Visible="false"></asp:TextBox></td>
<td>
<asp:Label runat="server" ID="lblch3" Text='<%#Eval("choice3") %>' Width="100px"></asp:Label>
<asp:TextBox runat="server" ID="txtch3" Text='<%#Eval("choice3") %>' Width="100px" Visible="false"></asp:TextBox></td>
<td>
<asp:Label runat="server" ID="lblch4" Text='<%#Eval("choice4") %>' Width="100px"></asp:Label>
<asp:TextBox runat="server" ID="txtch4" Text='<%#Eval("choice4") %>' Width="100px" Visible="false"></asp:TextBox>
<asp:Label runat="server" ID="lblCorrect" Text='<%#Eval("correct") %>' /></td>
<td>
<asp:Label runat="server" ID="lblisTrue" Text='<%# Eval("isTrue") %>' Width="70px"></asp:Label>
<asp:CheckBox runat="server" ID="chkistrue" Checked='<%#(Eval("isTrue")=="true") %>' Width="70px" Visible="false" /></td>
<td><span class="more">
<asp:LinkButton ID="lnkEdit" Text="Edit" runat="server" data-toggle="modal" data-target="#myModal" OnClientClick="getdata();" CausesValidation="false" />
<asp:LinkButton ID="lnkDelete" Text="Delete" runat="server" OnClick="OnDelete" CausesValidation="false" OnClientClick="return confirm('Do you want to delete this row?');" />
</span></td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
我的问题是当我更新转发器内的任何记录时。更新记录，更新数据库表，获取的数据表显示更新。 但该页面未显示更新。刷新页面时，会反映更新。我不知道是什么导致了这个问题。用于更新的服务器代码是
protected void BindRepeater(int tid)
{
try
{
cmd = new SqlCommand("SP_GetQuestions", connection);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@Tid", tid);
SqlDataAdapter sda = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
sda.Fill(dt);
//connection.Close();
if (dt.Rows.Count > 0)
{
//adding qno to dt
dt.Columns.Add("Qno", typeof(System.Int32));
for (int i = 0; i < dt.Rows.Count; i++)
{
dt.Rows[i]["Qno"] = i + 1;
}
rptQuestions.DataSource = dt;
rptQuestions.DataBind();
}
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
protected Question getData()
{
Question question = new Question();
question.questDesc = txtQuestionDesc.Text;
question.ansdesc = null;
question.ch1 = null;
question.ch2 = null;
question.ch3 = null;
question.ch4 = null;
question.correct = null;
//question.isTrue = null;
//question.qid = null;
//question.qtype = null;
question.qtype = Convert.ToInt32(ddlQType.Value);
switch (question.qtype)
{
case 1:
question.ansdesc = textareaAns.InnerText.ToString();
break;
case 2:
question.ch1 = txtMulti1.Text;
question.ch2 = txtMulti2.Text;
question.ch3 = txtMulti3.Text;
question.ch4 = txtMulti4.Text;
question.correct = "";
if (chkmulti1.Checked == true)
question.correct += "1";
if (chkmulti2.Checked == true)
question.correct += "2";
if (chkmulti3.Checked == true)
question.correct += "3";
if (chkmulti4.Checked == true)
question.correct += "4";
break;
case 3:
if (rbtrue.Checked == true)
question.isTrue = true;
if (rbfalse.Checked == true)
question.isTrue = false;
break;
}
return question;
}
protected void btnUpdate_Click(object sender, EventArgs e)
{
Question question = getData();
question.qid = Convert.ToInt32(txtQuestid.Text.ToString());
cmd = new SqlCommand("SP_UpdateQuestion", connection);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@question", question.questDesc);
cmd.Parameters.AddWithValue("@qid", question.qid);
cmd.Parameters.AddWithValue("@ans", question.ansdesc);
cmd.Parameters.AddWithValue("@ch1", question.ch1);
cmd.Parameters.AddWithValue("@ch2", question.ch2);
cmd.Parameters.AddWithValue("@ch3", question.ch3);
cmd.Parameters.AddWithValue("@ch4", question.ch4);
cmd.Parameters.AddWithValue("@correct", question.correct);
cmd.Parameters.AddWithValue("@isTrue", question.isTrue);
cmd.Parameters.AddWithValue("@qtype", question.qtype);
try
{
connection.Open();
cmd.ExecuteNonQuery();
connection.Close();
BindRepeater(Convert.ToInt32(Session["tid"]));
Response.Write("<script>alert('Question updated successfully!');</script>");
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
请告诉我如何解决这个问题。我甚至将更新面板的updateMode属性保持为'conditional'但没有结果。
答案 0 :(得分：0)
您是否检查过控制台是否有错误？因为您将Response.Write与UpdatePanel一起使用。这将给您以下错误
错误：Sys.WebForms.PageRequestManagerParserErrorException：The 无法解析从服务器收到的消息。
因此，请删除所有Response.Write代码，如果要显示JavaScript警报，请使用ScriptManager
ScriptManager.RegisterStartupScript(Page, Page.GetType(), "showAlert", "alert('Question updated successfully!');", true);