我正在使用嵌套的Telerik RadGrid，只有在扩展父Rad Grid中的特定行时才应填充它。这适用于父网格的第一页，并且只触发父的NeedDataSource。此外，子嵌套网格的NeedDataSource只在扩展行时正确触发。
但是，当我将父网格分页到第二页时，子RadGrid的NeedDataSource将为父RadGrid的每一行触发，即使父网格中没有任何行被展开。
我该怎么做才能解决这个问题？我下面的代码中的TelerikRadGrid1是父RadGrid，而TelerikRadGrid2是嵌套的子RadGrid。
.aspx页面，文件代码背后的代码如下：
<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
<AjaxSettings>
<telerik:AjaxSetting AjaxControlID="IgnoreButton">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="UnMatchedClientDBCustomers_TelerikRadGrid1" />
</UpdatedControls>
</telerik:AjaxSetting>
<telerik:AjaxSetting AjaxControlID="MatchButton">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="UnMatchedClientDBCustomers_TelerikRadGrid1" />
</UpdatedControls>
</telerik:AjaxSetting>
<telerik:AjaxSetting AjaxControlID="UnMatchedClientDBCustomers_TelerikRadGrid1">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="UnMatchedClientDBCustomers_TelerikRadGrid1" />
<telerik:AjaxUpdatedControl ControlID="PotentialMasterListDBMatches_TelerikRadGrid2" />
</UpdatedControls>
</telerik:AjaxSetting>
</AjaxSettings>
</telerik:RadAjaxManager>
<telerik:RadGrid ID="runat" UnMatchedClientDBCustomers_TelerikRadGrid1="server" AllowPaging="true"
AllowSorting="true" AllowFilteringByColumn="True" AutoGenerateColumns="false"
onneeddatasource="UnMatchedClientDBCustomers_TelerikRadGrid1_NeedDataSource"
onitemcommand="UnMatchedClientDBCustomers_TelerikRadGrid1_ItemCommand" Width="80%" Style="min-height: 360px;">
<ClientSettings>
<Scrolling AllowScroll="false"/>
</ClientSettings>
<MasterTableView DataKeyNames="CustomerID, MemberID" TableLayout="Auto">
<ColumnGroups>
<telerik:GridColumnGroup Name="Name" HeaderText="Name"
HeaderStyle-HorizontalAlign="Center" >
</telerik:GridColumnGroup>
<telerik:GridColumnGroup Name="Emails" HeaderText="Emails"
HeaderStyle-HorizontalAlign="Center" >
</telerik:GridColumnGroup>
<telerik:GridColumnGroup Name="Match" HeaderText="Match Criteria"
HeaderStyle-HorizontalAlign="Center" >
</telerik:GridColumnGroup>
<telerik:GridColumnGroup Name="Address" HeaderText="Address"
HeaderStyle-HorizontalAlign="Center">
</telerik:GridColumnGroup>
<telerik:GridColumnGroup Name="Action" HeaderText="Action"
HeaderStyle-HorizontalAlign="Center" >
</telerik:GridColumnGroup>
</ColumnGroups>
<CommandItemSettings ExportToPdfText="Export to PDF" ShowExportToExcelButton="true"></CommandItemSettings>
<RowIndicatorColumn Visible="True" FilterControlAltText="Filter RowIndicator column"></RowIndicatorColumn>
<ExpandCollapseColumn Visible="True" FilterControlAltText="Filter ExpandColumn column"></ExpandCollapseColumn>
<Columns>
<telerik:GridTemplateColumn HeaderText="Ignore" ColumnGroupName="Action" AllowFiltering="false"><HeaderStyle Width="50px" />
<ItemTemplate>
<asp:LinkButton ID="IgnoreButton" runat="server" Text="Ignore" OnClientClick="IgnoreConfirm()" CommandName="IgnoreButtonClick" CommandArgument='<%#Eval("CustomerID")%>' />
</ItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridBoundColumn DataField="CustomerID" HeaderText="CustomerID" UniqueName="CustomerID" Visible="false"></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="MemberID" HeaderText="Member Number" UniqueName="MemberNumber" ColumnGroupName="Name" FilterControlWidth="50px"><HeaderStyle Width="50px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="LastName" HeaderText="Last Name" UniqueName="LastName" ColumnGroupName="Name"><HeaderStyle Width="100px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="FirstName" HeaderText="First Name" UniqueName="First" ColumnGroupName="Name"><HeaderStyle Width="50px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Email" HeaderText="Email" UniqueName="Email" ColumnGroupName="Emails" FilterControlWidth="130px"><HeaderStyle Width="100px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="LoginID" HeaderText="Login ID" UniqueName="LoginID" ColumnGroupName="Emails" FilterControlWidth="130px"><HeaderStyle Width="100px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="MemberNoMatch" HeaderText="Member Number Match" UniqueName="MemberNoMatch" ColumnGroupName="Match"><HeaderStyle Width="50px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="LastNameMatch" HeaderText="Last Name Match" UniqueName="LastNameMatch" ColumnGroupName="Match" FilterControlWidth="130px"><HeaderStyle Width="100px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="EmailMatch" HeaderText="Email Match" UniqueName="EmailMatch" ColumnGroupName="Match" FilterControlWidth="130px"><HeaderStyle Width="100px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Company" HeaderText="Company" UniqueName="Company" ColumnGroupName="Address"><HeaderStyle Width="100px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Address" HeaderText="Address" UniqueName="Address" ColumnGroupName="Address"><HeaderStyle Width="100px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="City" HeaderText="City" UniqueName="City" ColumnGroupName="Address" FilterControlWidth="50px"><HeaderStyle Width="100px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="State" HeaderText="State" UniqueName="State" ColumnGroupName="Address" FilterControlWidth="30px"><HeaderStyle Width="20px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="PostalCode" HeaderText="Postal Code" UniqueName="PostalCode" ColumnGroupName="Address" FilterControlWidth="50px"><HeaderStyle Width="100px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Phone" HeaderText="Phone Number" UniqueName="Phone" ColumnGroupName="Address" FilterControlWidth="50px"><HeaderStyle Width="100px" /><ItemStyle Wrap="true" /></telerik:GridBoundColumn>
</Columns>
<NestedViewTemplate>
<div>
<telerik:RadGrid ID="PotentialMasterListDBMatches_TelerikRadGrid2" runat="server" OnNeedDataSource="PotentialMasterListDBMatches_TelerikRadGrid2_NeedDataSource" AutoGenerateColumns="false">
<MasterTableView>
<Columns>
<telerik:GridTemplateColumn HeaderText="Update" ColumnGroupName="Action" AllowFiltering="false"><HeaderStyle Width="40px" />
<ItemTemplate>
<asp:LinkButton ID="MatchButton" runat="server" Text="Match" OnClientClick="MatchConfirm()" OnClick="MatchButton_Click" />
</ItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridBoundColumn DataField="ClientDBCustomerID" HeaderText="CustomerID" UniqueName="ClientDBCustomerID" Display="false"></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="MemberID" HeaderText="Member Number" UniqueName="MasterListDBMemberNumber" ColumnGroupName="Name"><HeaderStyle Width="50px" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="LastName" HeaderText="Last Name" UniqueName="Last" ColumnGroupName="Name"><HeaderStyle Width="100px" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="FullName" HeaderText="Full Name" UniqueName="Full" ColumnGroupName="Name"><HeaderStyle Width="200px" /><HeaderStyle Width="100px" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="AdmitDate" HeaderText="Admit Date" UniqueName="AdmitDate" ColumnGroupName="Name"><HeaderStyle Width="25px" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Status" HeaderText="Status" UniqueName="Status" ColumnGroupName="Name"><HeaderStyle Width="15px" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="PrivateEmail" HeaderText="Private Email" UniqueName="PrivateEmail" ColumnGroupName="Emails"><HeaderStyle Width="100px" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="PublicEmail" HeaderText="Public Email" UniqueName="PublicEmail" ColumnGroupName="Emails"><HeaderStyle Width="100px" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="FirmName" HeaderText="Firm Name" UniqueName="FirmName" ColumnGroupName="Address"><HeaderStyle Width="100px" /></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Address" HeaderText="Address" UniqueName="Address" ColumnGroupName="Address"></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="City" HeaderText="City" UniqueName="City" ColumnGroupName="Address"></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="State" HeaderText="State" UniqueName="State" ColumnGroupName="Address"></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Country" HeaderText="Country" UniqueName="Country" ColumnGroupName="Address"></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="ZipCode" HeaderText="Zip Code" UniqueName="ZipCode" ColumnGroupName="Address"></telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="Phone" HeaderText="Phone" UniqueName="Phone" ColumnGroupName="Address"></telerik:GridBoundColumn>
</Columns>
</MasterTableView>
</telerik:RadGrid>
<%--<asp:LinkButton ID="CustomMatch" runat="server" Text="Custom Match"></asp:LinkButton>--%>
</div>
</NestedViewTemplate>
<EditFormSettings>
<EditColumn FilterControlAltText="Filter EditCommandColumn column"></EditColumn>
</EditFormSettings>
<PagerStyle PageSizes="5,10" PagerTextFormat="{4}Currently we have <strong>{5}</strong> members matching your search criteria"
PageSizeLabelText="Members per page:" />
</MasterTableView>
<PagerStyle PageSizeControlType="RadComboBox"></PagerStyle>
<FilterMenu EnableImageSprites="False"></FilterMenu>
<ExportSettings SuppressColumnDataFormatStrings="false" IgnorePaging="true" HideStructureColumns="true" OpenInNewWindow="true" ExportOnlyData="true">
<Excel Format="Biff"></Excel>
</ExportSettings>
</telerik:RadGrid>
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
}
}
protected void UnMatchedClientDBCustomers_TelerikRadGrid1_NeedDataSource(object sender, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
{
List<ClientDBUnmatchedDetail> ClientDBUnmatchedDetails_UnMatchedCustomers_BindToTelerikRadGrid;
using (ClientDBEntities ClientDBContext = new ClientDBEntities())
{
ClientDBUnmatchedDetails_UnMatchedCustomers_BindToTelerikRadGrid = ClientDBContext.ClientDBUnmatchedDetails.ToList();
}
UnMatchedClientDBCustomers_TelerikRadGrid1.DataSource = ClientDBUnmatchedDetails_UnMatchedCustomers_BindToTelerikRadGrid;
}
protected void PotentialMasterListDBMatches_TelerikRadGrid2_NeedDataSource(object sender, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
{
GridDataItem parentItem = ((sender as RadGrid).NamingContainer as GridNestedViewItem).ParentItem as GridDataItem;
var MemberID = parentItem.GetDataKeyValue("MemberID").ToString();
string CustomerID = parentItem.GetDataKeyValue("CustomerID").ToString();
List<UnMatchedMasterListDBMembers> MasterListDBUnMatchedDetails_PotentialMasterListDBMatches_BindToTelerikRadGrid = null;
// If there is match between member numbers
if (parentItem["MemberNoMatch"].Text == bool.TrueString)
{
decimal dMemberID = Convert.ToDecimal(MemberID);
using (appsEntities appsEntitiescontext = new appsEntities())
{
MasterListDBUnMatchedDetails_PotentialMasterListDBMatches_BindToTelerikRadGrid = appsEntitiescontext.membership_all
.Where(x => x.MemNumber == dMemberID)
.Select(y => new UnMatchedMasterListDBMembers()
{
ClientDBCustomerID = CustomerID,
MemberDetails = y
}).ToList();
}
}
// If there is match between email addresses
else if (parentItem["EmailMatch"].Text == bool.TrueString)
{
string email = (parentItem["Email"].Text).Trim().ToLower().ToString();
using (var appsEntitiescontext = new appsEntities())
{
MasterListDBUnMatchedDetails_PotentialMasterListDBMatches_BindToTelerikRadGrid = appsEntitiescontext.membership_all
.Where(x => x.PrivateEmail.Trim().ToLower().ToString() == email || x.PublicEmail.Trim().ToLower().ToString() == email)
.Select(y => new UnMatchedMasterListDBMembers()
{
ClientDBCustomerID = CustomerID,
MemberDetails = y
}).ToList();
}
}
// If there is match between Last Names, then get the corresponding MasterDB members
else if (parentItem["LastNameMatch"].Text == bool.TrueString)
{
string lastName = (parentItem["LastName"].Text).Trim().ToLower().ToString();
using (var context = new appsEntities())
{
MasterListDBUnMatchedDetails_PotentialMasterListDBMatches_BindToTelerikRadGrid = context.membership_all
.Where(x => x.LastName.Trim().ToLower() == lastName)
.Select(y => new UnMatchedMasterListDBMembers()
{
ClientDBCustomerID = CustomerID,
MemberDetails = y
}).ToList();
}
}
(sender as RadGrid).DataSource = MasterListDBUnMatchedDetails_PotentialMasterListDBMatches_BindToTelerikRadGrid;
}
protected void UnMatchedClientDBCustomers_TelerikRadGrid1_ItemCommand(object sender, Telerik.Web.UI.GridCommandEventArgs e)
{
if (e.CommandName == "ExpandCollapse" && e.Item is GridDataItem)
{
GridDataItem parentItem_ClientDBCustomer_TelerikRADGrid1Row = e.Item as GridDataItem;
RadGrid childItem_potentialMasterListDBMemberMatches_TelerikRADGrid2 = parentItem_ClientDBCustomer_TelerikRADGrid1Row.ChildItem.FindControl("PotentialMasterListDBMatches_TelerikRadGrid2") as RadGrid;
childItem_potentialMasterListDBMemberMatches_TelerikRADGrid2.Rebind();
}
else if (e.CommandName == "IgnoreButtonClick" && e.Item is GridDataItem)
{
string confirmValue = Request.Form["ConfirmIgnore"];
if (confirmValue == "Yes")
{
GridDataItem item = e.Item as GridDataItem;
var MemberID = item.GetDataKeyValue("MemberID").ToString();
var CustomerID = item.GetDataKeyValue("CustomerID").ToString();
try
{
using (TransactionScope scope = new TransactionScope())
{
using (ClientDBEntities ClientDBContext = new ClientDBEntities())
{
// Find the ClientDB customer who's being ignored in the ClientDBUnmatchedDetails db table
ClientDBUnmatchedDetail ClientDBUnMatchedDetails_CustomerToBeIgnored = ClientDBContext.ClientDBUnmatchedDetails.Where(x => x.CustomerID == CustomerID).FirstOrDefault();
//check if customer is already in the ClientDBIgnore table
bool CustomerAlreadyExistsIn_ClientDBIgnore = false;
CustomerAlreadyExistsIn_ClientDBIgnore = ClientDBContext.ClientDBIgnore.Any(x => x.CustomerID == CustomerID);
if (!CustomerAlreadyExistsIn_ClientDBIgnore)
{
//add the Ignored ClientDB Customer to the ClientDBIgnore db table
ClientDBContext.ClientDBIgnore.AddObject(
new ClientDBIgnore()
{
//<class properties are set here>
}
);
}
// No need to do anything to the associated courses/credits information because they will already be in the ClientDBUnMatchedCreditDetails db table
//delete the Ignored ClientDB Customer from the ClientDBUnmatchedDetails db table
ClientDBContext.ClientDBUnmatchedDetails.DeleteObject(ClientDBUnMatchedDetails_CustomerToBeIgnored);
// Save changes
ClientDBContext.SaveChanges();
//scope.Complete();
}
scope.Complete();
}
UnMatchedClientDBCustomers_TelerikRadGrid1.Rebind();
// If Transaction successfull and complete, notify the user
ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "alert('ClientDB Customer Ignored')", true);
}
catch (Exception Ex)
{
// In case of failure, notify the user
ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "alert('Error Ignoring the ClientDB Customer. Try doin it again or please call IT HelpDesk')", true);
}
}
}
}
public void MatchButton_Click(object sender, EventArgs e)
{
string confirmValue = Request.Form["ConfirmMatch"];
if (confirmValue == "Yes")
{
GridDataItem ClientDBCustomer_TelerikRADGrid1Row = ((LinkButton)sender).Parent.Parent as GridDataItem;
var MemberID = ClientDBCustomer_TelerikRADGrid1Row["MasterListDBMemberNumber"].Text;
var CustomerID = ClientDBCustomer_TelerikRADGrid1Row["ClientDBCustomerID"].Text;
try
{
using (TransactionScope scope = new TransactionScope())
{
using (ClientDBEntities ClientDBContext = new ClientDBEntities())
{
//find the manually matched ClientDB customer in the ClientDBUnmatchedDetails table
ClientDBUnmatchedDetail deleteClientDBUnMatchedMemberObject = ClientDBContext.ClientDBUnmatchedDetails.Where(x => x.CustomerID == CustomerID).Single();
// check if customer is already in the ClientDBRules tables
bool CustomerAlreadyExistsIn_ClientDBRules = false;
CustomerAlreadyExistsIn_ClientDBRules = ClientDBContext.ClientDBRules.Any(x => x.CustomerID == CustomerID);
if (!CustomerAlreadyExistsIn_ClientDBRules)
{
//add the manually matched ClientDB Customer to the ClientDBRules db table
ClientDBContext.ClientDBRules.AddObject(
new ClientDBRule()
{
//<class properties are set here>
}
);
}
//find all matching courses/credits (and which will be removed) from the ClientDBUnMatchedCreditDetails table for this ClientDB customer
IQueryable<ClientDBUnMatchedCreditDetails> deleteClientDBUnmatchedCreditDetailsObjects = ClientDBContext.ClientDBUnMatchedCreditDetails.Where(x => x.CustomerID == CustomerID);
//for each matching course in the ClientDBUnMatchedCreditDetails table
foreach (ClientDBUnMatchedCreditDetails deleteClientDBUnmatchedCreditDetailsObject in deleteClientDBUnmatchedCreditDetailsObjects)
{
//if course does not exist in ClientDBCreditDetails table, add that course to ClientDBCreditDetails
bool courseAlreadyExistsInClientDBCreditDetails = false;
//courseAlreadyExistsInClientDBCreditDetails = ClientDBContext.ClientDBCreditDetails.Where(x => x.RegistrationID == deleteClientDBUnmatchedCreditDetailsObject.RegistrationID).SingleOrDefault() != null;
courseAlreadyExistsInClientDBCreditDetails = ClientDBContext.ClientDBCreditDetails.Any(x => x.RegistrationID == deleteClientDBUnmatchedCreditDetailsObject.RegistrationID);
if (!courseAlreadyExistsInClientDBCreditDetails)
{
//add course to ClientDBCreditDetails
ClientDBContext.ClientDBCreditDetails.AddObject(
new ClientDBCreditDetail()
{
//<class properties are set here>
}
);
}
// else
// do nothing
// and then delete that course from the ClientDBUnMatchedCreditDetails table
ClientDBContext.ClientDBUnMatchedCreditDetails.DeleteObject(deleteClientDBUnmatchedCreditDetailsObject);
}
//delete the manually matched ClientDB Customer from ClientDBUnmatchedDetails db table
ClientDBContext.ClientDBUnmatchedDetails.DeleteObject(deleteClientDBUnMatchedMemberObject);
//save changes to the db
ClientDBContext.SaveChanges();
//scope.Complete();
}
scope.Complete();
}
UnMatchedClientDBCustomers_TelerikRadGrid1.Rebind();
// If Transaction successfull and complete, notify the user
ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "alert('Match Successful')", true);
}
catch (Exception Ex)
{
// In case of failure, notify the user
ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "alert('Error Executing the match rule. Try doing it again or please call IT HelpDesk')", true);
}
}
}
答案 0 :(得分：0)
你永远不应该在NeedDataSource事件中调用.Rebind（）或.DataBind（）;我猜这至少会导致你的一些问题。
http://www.telerik.com/help/aspnet-ajax/grid-advanced-data-binding.html