C# 单柱的radgrid延迟加载

我有一个Telerik Radgrid，它有两个不同的数据库，第一个数据源加载大部分信息，而第二个数据库加载单个列。 我的问题是，第一个数据加载速度快，而第二个数据加载速度慢，因此我试图找出一种方法来延迟第二个数据源的加载，而不必等待整个数据绑定。 这是到目前为止我的代码

ASPX：

C:

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所以我要做的是在加载并显示radgrid之后，为每一行加载getMotif AbscenceMatr，date方法。

我认为您不能。服务器代码是同步的，所以它一次只运行一行，所以它将等待调用返回数据。如果检索速度较慢，请考虑使其更快或仅绑定此数据的需求，例如，为用户添加按钮或复选框以设置列的“可见”=“真”，并升起标记，以便检索数据。使用AJAX，用户将有一个加载指示器

    <telerik:RadGrid ID="rgPointage" runat="server" CellSpacing="0" GridLines="None" AutoGenerateColumns="False" AllowSorting="True" OnItemDataBound="rgPointage_ItemDataBound">


    <MasterTableView DataKeyNames="Matricule">
        <Columns>
            <telerik:GridBoundColumn FilterControlAltText="Filter Matricule column" DataField="Matricule" HeaderText="Matricule" UniqueName="Matricule">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="Direction" FilterControlAltText="Filter Direction column" HeaderText="Direction" UniqueName="Direction" AutoPostBackOnFilter="True" FilterControlWidth="80px">
                <ColumnValidationSettings>
                    <ModelErrorMessage Text="" />
                </ColumnValidationSettings>
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn FilterControlAltText="Filter Nom column" DataField="Nom" HeaderText="Nom" UniqueName="Nom">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn FilterControlAltText="Filter Prenom column" DataField="Prenom" HeaderText="Prenom" UniqueName="Prenom">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn FilterControlAltText="Filter Etat column" DataField="motif" HeaderText="Etat" UniqueName="Etat">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn FilterControlAltText="Filter Pnt1 column" HeaderText="Pointage 1" UniqueName="Pnt1" DataField="Pnt1" DataFormatString="{0:HH:mm}">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn Display="false" FilterControlAltText="Filter src1 column" HeaderText="Source 1" UniqueName="src1" DataField="PntSource1">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn FilterControlAltText="Filter Pnt2 column" HeaderText="Pointage 2" UniqueName="Pnt2" DataField="Pnt2" DataFormatString="{0:HH:mm}">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn Display="false" FilterControlAltText="Filter src2 column" HeaderText="Source 2" UniqueName="src2" DataField="PntSource2">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn FilterControlAltText="Filter Pnt3 column" HeaderText="Pointage 3" UniqueName="Pnt3" DataField="Pnt3" DataFormatString="{0:HH:mm}">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn Display="false" FilterControlAltText="Filter src3 column" HeaderText="Source 3" UniqueName="src3" DataField="PntSource3">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn FilterControlAltText="Filter Pnt4 column" HeaderText="Pointage 4" UniqueName="Pnt4" DataField="Pnt4" DataFormatString="{0:HH:mm}">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn Display="false" FilterControlAltText="Filter src4 column" HeaderText="Source 4" UniqueName="src4" DataField="PntSource4">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn FilterControlAltText="Filter Pnt5 column" HeaderText="Pointage 5" UniqueName="Pnt5" DataField="Pnt5" DataFormatString="{0:HH:mm}">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn Display="false" FilterControlAltText="Filter src5 column" HeaderText="Source 5" UniqueName="src5" DataField="PntSource5">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn FilterControlAltText="Filter Pnt6 column" HeaderText="Pointage 6" UniqueName="Pnt6" DataField="Pnt6" DataFormatString="{0:HH:mm}">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn Display="false" FilterControlAltText="Filter src6 column" HeaderText="Source 6" UniqueName="src6" DataField="PntSource6">
            </telerik:GridBoundColumn>
        </Columns>
    </MasterTableView>
</telerik:RadGrid>

protected void getPointage(DateTime date)
        {
            try
            {
                DataTable dt = new DataTable();
                if (!SP)
                    dt = getChildren(getFather());
                else
                    dt = getAll();

                if (dt == null)
                    return;
                listePointage.Clear();
                foreach (DataRow emp in dt.Rows)
                {

                    using (var DB = new PRHEntities())
                    {
                        string matr = emp["Matricule"].ToString();
                        string nomEmp = emp["NomEmploye"].ToString();
                        string prenomEmp = emp["PrenomEmploye"].ToString();
                        string direction = emp["Direction"].ToString();
                        PointagePersonne pointage = (from p in DB.Fn_PointageParJour(matr, date)
                                                     select new PointagePersonne
                                                     {
                                                         Matricule = matr,
                                                         Nom = nomEmp,
                                                         Prenom = prenomEmp,
                                                         Direction = direction,
                                                         Pnt1 = p.Pnt1,
                                                         Pnt2 = p.Pnt2,
                                                         Pnt3 = p.Pnt3,
                                                         Pnt4 = p.Pnt4,
                                                         Pnt5 = p.Pnt5,
                                                         Pnt6 = p.Pnt6,
                                                         PntSource1 = p.PntID1,
                                                         PntSource2 = p.PntID2,
                                                         PntSource3 = p.PntID3,
                                                         PntSource4 = p.PntID4,
                                                         PntSource5 = p.PntID5,
                                                         PntSource6 = p.PntID6
                                                     }).FirstOrDefault<PointagePersonne>();

                        if (!object.Equals(pointage, null))
                        {
                            pointage.PntSource1 = getSourcePointage(pointage.PntSource1);
                            pointage.PntSource2 = getSourcePointage(pointage.PntSource2);
                            pointage.PntSource3 = getSourcePointage(pointage.PntSource3);
                            pointage.PntSource4 = getSourcePointage(pointage.PntSource4);
                            pointage.PntSource5 = getSourcePointage(pointage.PntSource5);
                            pointage.PntSource6 = getSourcePointage(pointage.PntSource6);
                            pointage.motif = getmotifAbsence(matr, date);
                            listePointage.Add(pointage);
                        }
                        else
                        {
                            var nonPnt = new PointagePersonne()
                            {
                                Matricule = matr,
                                Nom = nomEmp,
                                Prenom = prenomEmp,
                                Direction = direction,
                                Pnt1 = null,
                                Pnt2 = null,
                                Pnt3 = null,
                                Pnt4 = null,
                                Pnt5 = null,
                                Pnt6 = null,
                                motif = getmotifAbsence(matr, date)
                            };
                            listePointage.Add(nonPnt);
                        }
                    }
                }

                rgPointage.DataSource = listePointage;
                rgPointage.DataBind();


                ViewState["pointage"] = listePointage;
                if (rgPointage.Items.Count > 1)
                {
                    btExportPointage.Visible = true;
                }
                else
                    btExportPointage.Visible = false;

            }
            catch (Exception ex)
            {
//
            }


        }