我最近购买了 Telerik 控件。我遇到了 radgrid 的性能问题。
- 我用 6000 条记录实现了对 radgrid 的分页。我在 rg402_ItemCreated 上为 radcombo 创建了 viewall 选项。当我选择 viewall 时，它需要 20 秒才能将数据绑定到网格，然后浏览器卡住（Firefox 3.6.4 和 IE7）并显示错误（请查找附件图片）。无论如何要更改 viewall 选项代码以快速获取数据。或者无论如何可以提高性能并减少记录绑定的时间。
这是我的代码。
.aspx 代码
style type="text/css">
.rgPageFirst, .rgPagePrev, .rgPageNext, .rgPageLast
{
display: none !important;
}
div.RadGrid_Default .rgHeader, div.RadGrid_Default th.rgResizeCol
{
background-image: none;
}
</style>
<script type="text/javascript">
function onRequestStart(sender, args) {
if (args.get_eventTarget().indexOf("ExportToExcelButton") >= 0 ||
args.get_eventTarget().indexOf("ExportToWordButton") >= 0 ||
args.get_eventTarget().indexOf("ExportToPdfButton") >= 0 ||
args.get_eventTarget().indexOf("ExportToCsvButton") >= 0) {
args.set_enableAjax(false);
}
}
</script>
<div>
<tr>
<td colspan="2">
<asp:Label runat="server" Font-Bold="true" Font-Size="14pt" ID="lblTskName"></asp:Label>
</td>
</tr>
<br />
</div>
<div>
<telerik:RadScriptManager ID="RadScriptManager1" runat="server">
</telerik:RadScriptManager>
<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
<ClientEvents OnRequestStart="onRequestStart" />
<AjaxSettings>
<telerik:AjaxSetting AjaxControlID="rg402">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="rg402" LoadingPanelID="RadAjaxLoadingPanel1" />
</UpdatedControls>
</telerik:AjaxSetting>
</AjaxSettings>
</telerik:RadAjaxManager>
<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" Skin="Default">
</telerik:RadAjaxLoadingPanel>
<telerik:RadGrid ID="rg402" runat="server" AutoGenerateColumns="false" Height="550px"
OnNeedDataSource="rg402_NeedDataSource" Width="120%" AllowPaging="True" AllowSorting="True"
AllowMultiRowSelection="True" EnableHeaderContextMenu="true" GridLines="None"
EnableHeaderContextFilterMenu="true" AllowMultiRowEdit="true" AllowFilteringByColumn="True"
OnPreRender="rg402_PreRender" OnItemCreated="rg402_ItemCreated" EnableViewState="false">
<HeaderStyle HorizontalAlign="Center" BorderWidth="1px" Font-Bold="true" Font-Size="8pt" />
<ExportSettings IgnorePaging="true" ExportOnlyData="true">
<Pdf AllowModify="false" AllowPrinting="true" PageBottomMargin="" PageFooterMargin=""
PageHeaderMargin="" PageHeight="11in" PageLeftMargin="" PageRightMargin="" PageTopMargin=""
PageWidth="14in" />
</ExportSettings>
<MasterTableView DataKeyNames="orderId" CommandItemDisplay="Top" EditMode="InPlace"
PageSize="30">
<CommandItemSettings ShowExportToWordButton="true" ShowExportToExcelButton="true"
ShowExportToCsvButton="true" ShowExportToPdfButton="true" ShowAddNewRecordButton="false" />
<Columns>
<telerik:GridClientSelectColumn UniqueName="ClientSelectColumn" HeaderStyle-Width="3%"
ItemStyle-Width="3%">
</telerik:GridClientSelectColumn>
<telerik:GridBoundColumn UniqueName="sId" HeaderText="sId" DataField="sId" Visible="false">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn UniqueName="orderId" HeaderText="orderId" DataField="orderId"
Visible="false">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn UniqueName="Customer Name" HeaderText="Customer Name" DataField="Customer Name"
ReadOnly="true">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn UniqueName="Market Name" HeaderText="Market Name" DataField="Market Name"
ReadOnly="true">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn UniqueName="LOB" HeaderText="LOB" DataField="LOB" ReadOnly="true">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn UniqueName="Headend Name" HeaderText="Headend Name" DataField="Headend Name"
ReadOnly="true">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn UniqueName="Project Name" HeaderText="Project Name" DataField="Project Name"
ReadOnly="true">
</telerik:GridBoundColumn>
<telerik:GridHyperLinkColumn UniqueName="Site Name" HeaderText="Site Name" DataTextField="Site Name">
</telerik:GridHyperLinkColumn>
<telerik:GridBoundColumn UniqueName="Task Status" HeaderText="Task Status" DataField="Task Status"
ReadOnly="true">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn UniqueName="Plant Test Date" HeaderText="Plant Test Date"
DataField="Plant Test Date" ReadOnly="true">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn UniqueName="CORE CM Number" HeaderText="CORE CM Number"
DataField="CORE CM Number" ReadOnly="true">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn UniqueName="Req SM Imp Date" HeaderText="Req SM Imp Date"
DataField="Req SM Imp Date" ReadOnly="true">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn UniqueName="SM Ticket Number" HeaderText="SM Ticket Number"
DataField="SM Ticket Number">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn UniqueName="Sch SM Imp Date" HeaderText="Sch SM Imp Date"
DataField="Sch SM Imp Date">
</telerik:GridBoundColumn>
<telerik:GridEditCommandColumn UniqueName="ECC402">
</telerik:GridEditCommandColumn>
</Columns>
</MasterTableView>
<ClientSettings EnableRowHoverStyle="true" ReorderColumnsOnClient="false" AllowDragToGroup="false"
AllowColumnsReorder="True">
<Scrolling AllowScroll="true" UseStaticHeaders="true" />
<Selecting AllowRowSelect="True"></Selecting>
<Resizing AllowRowResize="true" AllowColumnResize="True" EnableRealTimeResize="True"
ResizeGridOnColumnResize="False"></Resizing>
</ClientSettings>
<PagerStyle Mode="NextPrevAndNumeric"></PagerStyle>
</telerik:RadGrid>
.cs 文件...
protected void Page_Load(object sender, EventArgs e)
{
try
{
if (!IsPostBack)
{
Session["SearchRes"] = null;
if (Session["TaskName"] != null)
lblTskName.Text = Session["TaskName"].ToString();
Session["FilColms"] = null;
Session["SortExp"] = null;
Session["FilExp"] = null;
Session["ViewAll"] = null;
BindGrid();
}
}
catch (Exception ex)
{
throw ex;
}
}
private void BindGrid()
{
try
{
DataSet dsResult = new DataSet();
clsSearch_BL clsObj = new clsSearch_BL();
clsObj.TaskID = (string)Session["TaskID"];
clsObj.CustName = (string)Session["CustName"];
clsObj.MarketName = (string)Session["MarketName"];
clsObj.HeadendName = (string)Session["HeadendName"];
clsObj.SiteName = (string)Session["SiteName"];
clsObj.TaskStatus = (string)Session["TaskStatus"];
clsObj.OrdType = (string)Session["OrdType"];
clsObj.OrdStatus = (string)Session["OrdStatus"];
clsObj.ProName = (string)Session["ProName"];
clsObj.LOC = (string)Session["LOC"];
clsObj.QuoteID = (string)Session["QuoteID"];
clsObj.CMNumber = (string)Session["CMNumber"];
if (Session["SearchRes"] == null)
{
dsResult = clsObj.getSearchResults_BL(clsObj);
Session["SearchRes"] = dsResult;
}
else
dsResult = (DataSet)Session["SearchRes"];
DataView dataView = dsResult.Tables[0].DefaultView;
rg402.DataSource = dsResult;
//rg402.DataBind();
}
catch (Exception ex)
{
throw ex;
}
}
protected void rg402_NeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
{
BindGrid();
}
protected void rg402_PreRender(object sender, EventArgs e)
{
rg402.MasterTableView.GetColumnSafe("RowIndicator").Display = false;
}
protected void rg402_ItemCreated(object sender, GridItemEventArgs e)
{
if (e.Item is GridPagerItem)
{
RadComboBox combo = (e.Item as GridPagerItem).FindControl("PageSizeComboBox") as RadComboBox;
// The number of items shown when all is selected
int allRowsCount = int.MaxValue;
// Remove duplicates
RadComboBoxItem duplicate = combo.Items.FindItemByValue(allRowsCount.ToString());
if (duplicate != null)
{
duplicate.Remove();
}
// Create a new item for showing all
RadComboBoxItem item = new RadComboBoxItem("All", allRowsCount.ToString());
item.Attributes.Add("ownerTableViewId", e.Item.OwnerTableView.ClientID);
combo.Items.Add(item);
// Set the current pagesize as the selected value
combo.Items.FindItemByValue(rg402.PageSize.ToString()).Selected = true;
}