我尝试正确定义@NumOfTransactions的控制参数，但收到错误“PropertyName必须设置为控制参数”NumOfTransactions“中名为”rptvwTransactionResearch“的控件的有效属性名。
我的aspx文件

<table style="height: 400px; width: 100%;">
    <tr>
    <td style="vertical-align: top; text-align: left" >
    <asp:ScriptManager ID="ScriptManager1" runat="server">      </asp:ScriptManager>
    <rsweb:ReportViewer ID="rptvwTransactionResearch" runat="server" Height="333px" Width="100%" Visible="False" SizeToReportContent="True">
       <LocalReport ReportPath="Reports\rptTransactionResearch.rdlc">
        <DataSources>
            <rsweb:ReportDataSource DataSourceId="SqlDataSource1" Name="TransactionResearch_ResidentResearch" />
          
            
        </DataSources>
       </LocalReport>
     </rsweb:ReportViewer>
    </td>
    </tr>

</table>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"  ConnectionString="<%$ ConnectionStrings:BANKMDFConnectionString %>"
    SelectCommand="SELECT r.ResidentID, r.FirstName, r.LastName, rt.TransactionDate, CASE WHEN CharIndex(' From ', rt.TransactionDescription) > 0 THEN substring(rt.TransactionDescription, charindex(' From ', rt.TransactionDescription) + 6, (Len(rt.TransactionDescription) - charindex(' From ', rt.TransactionDescription) + 6)) ELSE ' ' END AS TransactionDescription,rt.Amount FROM Resident AS r LEFT OUTER JOIN ResidentTransactions AS rt ON r.FacilityID = rt.FacilityID AND r.ResidentID = rt.ResidentID WHERE (r.FacilityID = @FacilityID) AND ( @NumOfTransactions = (SELECT count(1) FROM ResidentTransactions WHERE (FacilityID = r.FacilityID) AND residentid = r.residentid)) AND (( (rt.TransactionDate = (SELECT MAX(TransactionDate) AS Expr1 FROM ResidentTransactions AS ResidentTransactions_1 WHERE (FacilityID = r.FacilityID) AND (ResidentID = r.ResidentID) AND (DepositWithdrawalCode = 'D'))) AND (rt.TransactionSeq = (SELECT MAX(TransactionSeq) AS Expr1 FROM ResidentTransactions AS ResidentTransactions_1 WHERE (FacilityID = r.FacilityID) AND (ResidentID = r.ResidentID) AND (TransactionDate = rt.TransactionDate) AND (DepositWithdrawalCode = 'D'))) ) OR Transactionseq is null) Order by ltrim(r.LastName),ltrim(r.FirstName) ">
      <SelectParameters>
        <asp:SessionParameter Name="FacilityID" SessionField="FacilityID" Type="Int32" />
        <asp:ControlParameter Name="NumOfTransactions" ControlId="rptvwTransactionResearch" Type="String" />  
      </SelectParameters>
</asp:SqlDataSource>

下面是我的aspx.cs代码片段

using (SqlCommand cmd = new SqlCommand(strSQL, conn))
                {
                    var numOfDays = Int32.Parse(txtParam.Text) * -1;
                    cmd.Parameters.AddWithValue("@FacilityID", Session["FacilityID"].ToString());
                    cmd.Parameters.AddWithValue("@NumOfDays", numOfDays);
                    cmd.Parameters.AddWithValue("@NumOfTransactions", txtParam.Text);

                    SqlDataAdapter adpReport = new SqlDataAdapter(cmd);
                    DataSet dsReport = new TransactionResearch();
                    dsReport = new DataSet("TransactionResearch_ResidentResearch");
                    var testing3 = dsReport.Tables;
                    adpReport.Fill(dsReport, "TransactionResearch_ResidentResearch");
                    rds.Name = "TransactionResearch_ResidentResearch";
                    rds.Value = dsReport.Tables;

                    rptvwTransactionResearch.LocalReport.DataSources.Add(rds);
                    rptvwTransactionResearch.LocalReport.ReportPath = "Reports/rptTransactionResearch.rdlc";
                    rptvwTransactionResearch.LocalReport.DataSources[0].DataSourceId = "SqlDataSource1";

                    SqlDataSource1.SelectParameters.Add("@NumOfTransactions", DbType.String, txtParam.Text);
                    SqlDataSource1.SelectCommand = "SELECT r.ResidentID, r.FirstName, r.LastName, rt.TransactionDate, CASE WHEN CharIndex(' From ', rt.TransactionDescription) > 0 THEN substring(rt.TransactionDescription, charindex(' From ', rt.TransactionDescription) + 6, (Len(rt.TransactionDescription) - charindex(' From ', rt.TransactionDescription) + 6)) ELSE ' ' END AS TransactionDescription,rt.Amount FROM Resident AS r LEFT OUTER JOIN ResidentTransactions AS rt ON r.FacilityID = rt.FacilityID AND r.ResidentID = rt.ResidentID WHERE (r.FacilityID = @FacilityID) AND ( @NumOfTransactions = (SELECT count(1) FROM ResidentTransactions WHERE (FacilityID = r.FacilityID) AND residentid = r.residentid)) AND (( (rt.TransactionDate = (SELECT MAX(TransactionDate) AS Expr1 FROM ResidentTransactions AS ResidentTransactions_1 WHERE (FacilityID = r.FacilityID) AND (ResidentID = r.ResidentID) AND (DepositWithdrawalCode = 'D'))) AND (rt.TransactionSeq = (SELECT MAX(TransactionSeq) AS Expr1 FROM ResidentTransactions AS ResidentTransactions_1 WHERE (FacilityID = r.FacilityID) AND (ResidentID = r.ResidentID) AND (TransactionDate = rt.TransactionDate) AND (DepositWithdrawalCode = 'D'))) ) OR Transactionseq is null) Order by ltrim(r.LastName),ltrim(r.FirstName)";
                   
                    SqlDataSource1.DataBind();
                }

我面临的问题是，当我将查询字符串传递给SqlDataSource1并设置SelectParameters时，似乎没有注册该参数，从而导致错误Must Declare Scarlar Variable '@NumOfTransactions。