accessing repeater row data on button click - asp.net

Question

I have a repeater on my web page that displays Tests data
<form id="frmQuestion">
<div class="panel panel-primary">
<div class="panel-body" style="max-height: 420;overflow-y: scroll;">
<asp:ScriptManager ID="scriptmgr" runat="server"> </asp:ScriptManager>
<asp:UpdatePanel ID="upd" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<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") %>' Visible="false"></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="lnkUpdate" Text="Update" runat="server" Visible="false" OnClick="OnUpdate" CausesValidation="false" />
<asp:LinkButton ID="lnkCancel" Text="Cancel" runat="server" Visible="false" OnClick="OnCancel" 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>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</div>
<!-- Modal example -->
Add Question &nbsp&nbsp&nbsp
<!-- Modal -->
×
RESULT
--Select--
Descriptive Answer
Multiple Choice
True/False answer
Close
</form>
Now I want to get repeater row data ie question details on btnUpdate_Click event. The server code is
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.qtype = Convert.ToInt32(lblQuestionType.Text);
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(lblQuestid.Text);
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();
Response.Write("<script>alert('Question updated successfully!');</script>");
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
But compiler error occurs as ASP.addquestion_aspx' does not contain a definition for 'OnUpdate' and no extension method 'OnUpdate' accepting a first argument of type 'ASP.addquestion_aspx'
I think button is outside repeater hence the error. How can I access repeater's data in order to update it. Please guide me.

Answer 1

Actually the error was caused because I did not define OnUpdate() method for lnkUpdate button inside repeater. I just removed that button as I no longer needed it and it is working fine now.