Nested Telerik RadGrid's NeedDataSource firing after paging on the Parent RadGrid
Question
I'm using a nested Telerik RadGrid, which should only be populated when a particular row in the parent Rad Grid is expanded. This is working fine for the first page of the parent grid, and only the parent's NeedDataSource is fired. Also, the child nested grid's NeedDataSource is correctly only firing upon expanding a row.
However, when I page the parent grid to the second page, the NeedDataSource of the child RadGrid is firing for each row of the parent's RadGrid, even though none of the rows in the parent grid are expanded.
What can I do to fix this? TelerikRadGrid1 in my code below is the parent RadGrid, and TelerikRadGrid2 is the nested child RadGrid.
.aspx page, and the code behind file's code is as follows:
<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);
}
}
}
1 answers
solution1
0 ACCPTED
You should never call .Rebind() or .DataBind() in a NeedDataSource event; I'd guess that's causing at least some of your problems.
http://www.telerik.com/help/aspnet-ajax/grid-advanced-data-binding.html
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