Hello,

i want to Bind EntityCollections (LLBL-Engine) to the WebHierarchicalDataGrid.

When I start the ASP.NET site. The Job will be shown. When i click on the Job, to watch its protocolls, this error is being displayed:

Runtime Exception: No child grid script descriptors are available!

Job entity got an EntityCollcetion<AppJobProtokollEntity>. That has to be the childband. Both got a JobId.

Can someone help me?

Kind regards,

David Müller

Here is my Code:

IJobManager _jobManager = ServiceContainer.Current.GetService<IJobManager

>();

AppJobEntity job = _jobManager.GetJob(ticket, Guid.Parse("E57E0B1A-9C31-4987-8800-D5E8EC4B609F"), true);

List<AppJobEntity> list = new List<AppJobEntity>();
list.Add(job);
List<AppJobProtokollEntity> listProtokoll = new List<AppJobProtokollEntity>();

listProtokoll = job.AppJobProtokolls.ToList<

AppJobProtokollEntity>();

Infragistics.Web.UI.DataSourceControls.

DataView dv1 = new Infragistics.Web.UI.DataSourceControls.DataView();

dv1.ID =

"PARENT";

dv1.DataSource = list;

DataView dv2 = new Infragistics.Web.UI.DataSourceControls.DataView();

dv2.ID =

"CHILD";

dv2.DataSource = listProtokoll;

WebHierarchicalDataSource hdsMain = new WebHierarchicalDataSource();

hdsMain.DataViews.Add(dv1);

hdsMain.DataViews.Add(dv2);

DataRelation drMain = new Infragistics.Web.UI.DataSourceControls.DataRelation();

drMain.ParentColumns =

new string[] { "JobId"};

drMain.ChildColumns =

new string[] { "JobId" };

drMain.ParentDataViewID =

"PARENT";

drMain.ChildDataViewID =

"CHILD";

hdsMain.DataRelations.Add(drMain);

Band parentBand = new Band();

WebHierarchicalDataGrid1.Bands.Add(parentBand);

"PARENT";

parentBand.DataKeyFields =

"JobId";

AddBandColumn(parentBand,

"JobId", "JobId", true);

AddBandColumn(parentBand, "

MandantGuid", "MandantGuid", false);

AddBandColumn(parentBand,

"JobStart", "JobStart", false);

AddBandColumn(parentBand,

"JobEnd", "JobEnd", false);

AddBandColumn(parentBand,

"Status", "Status", false);

AddBandColumn(parentBand,"

Progress", "Progress", false);

AddBandColumn(parentBand,

"ErrorMail", "ErrorMail", false);

AddBandColumn(parentBand, "

BenutzerId", "Benutzer", false);

AddBandColumn(parentBand, "

Description", "Beschreibung", false);

Band childBand = new Band();

WebHierarchicalDataGrid1.Bands.Add(childBand);

"CHILD";

childBand.DataKeyFields =

"JobId";

AddBandColumn(childBand,

"JobId", "JobId", true);

AddBandColumn(childBand,

"JobProtokollId", "ProtokollId", false);

AddBandColumn(childBand,

"Time", "Time", false);

AddBandColumn(childBand, "

Level", "Level", false);

AddBandColumn(childBand,

"Text", "Text", false);

FormatBandColumn(childBand,

"JobId", "JobId", true);

FormatBandColumn(childBand,

"JobProtokollId", "ProtokollId", false);

FormatBandColumn(childBand,

"Time", "Time", false);

FormatBandColumn(childBand, "

Level", "Level", false);

FormatBandColumn(childBand,

"Text", "Text", false);

this.WebHierarchicalDataGrid1.DataSource = hdsMain;

this.WebHierarchicalDataGrid1.DataBind();