Manual Report Creation - MVVM & WPF

[Joshua]

Hello,

I am attempting to manually create a report in the viewmodel to bind to a WPF reportviewer control.

I cannot use the designer as I have to create the table manually. The report will accept a datasource object (in this instance a List<T> where T is a domain object), create the columns, and then populate the rows. I have done extensive research on the forums and created the column collection and even the entire table. I am unable to get it to show anything once the report is bound to the view.

Any help is appreciated.

-Josh

Here is the xaml for the report viewer:

 

 

 

<telerikReporting:ReportViewer Grid.Row="1" x:Name="ReportViewer1" Report="{Binding DataContext.AutoReport}" Width="500" Height="600" >

 

</telerikReporting:ReportViewer>


And here is the ViewModel:

 

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Collections.Specialized;
using System.Linq;
using System.Text;
using Telerik.Reporting;
using Telerik.Reporting.Drawing;
using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
using Telerik.Reporting;
using Telerik.Reporting.Drawing;
using System.Data.SqlClient;
using System.Data;
using System.Text;
using System.Collections;

namespace Client.ViewModels
{
   public class TelerikDummyReportViewModel : ReportViewModelBase
    {
        public TelerikDummyReportViewModel(ContentViewModelBase parent) : base(parent)
        {

        }
        #region Properties



       private Report _autoreport;
       public Report AutoReport
       {
           get
           {
               return _autoreport;
           }
           set
           {
               // Check if it's really a change
               if (value == _autoreport)
                   return;

               // Change Report
               _autoreport = value;

               // Notify attached View(s)
               RaisePropertyChanged("AutoReport");
           }
       }
       private List<user> _userDataList;
        public List<user> UserDataList
        {
            get { return _userDataList; }
            set
            {
                _userDataList = value;
                if (_userDataList.Count() > 0)
                {
                    AutoReport = new DynamicReport(_userDataList[0]);
                    AutoReport.Report.DataSource = UserDataList;

                }
                RaisePropertyChanged("UserDataList");
                RaisePropertyChanged("AutoReport");
            }
        }


        #endregion
        internal override void ControlLoaded()
        {
            DependencyCheck();
        }

        internal override void DependencyCheck()
        {

            GetUsers();
        }
        public void GetUsers()
        {
            ShowIsBusyMessage("Loading ...");
            AuthenticationClient.GetLPUsersCompleted += new EventHandler<GetLPUsersCompletedEventArgs>(AuthenticationClient_GetLPUsersCompleted);
            AuthenticationClient.GetLPUsersAsync();

        }

        void AuthenticationClient_GetLPUsersCompleted(object sender, GetLPUsersCompletedEventArgs e)
        {
            AuthenticationClient.GetLPUsersCompleted -= AuthenticationClient_GetLPUsersCompleted;
            if (e.Error != null)
            {
                this.HandlePrompt("Error retrieving audit activity filter.", DisplayName, e.Error);
                HideIsBusyMessage();
            }
            else if (e.Result != null)
            {
                UserDataList = e.Result.ToList();
            }
            HideIsBusyMessage();
        }



       internal class DynamicReport : Telerik.Reporting.Report
       {
           private Table table1;
           public DynamicReport(object sourceObject)
           {
               table1 = createTable(sourceObject);

           }


           private Table createTable(object sourceObject)
           {
               var targetTable = new Table();
               targetTable.ColumnGroups.Clear();
               targetTable.Body.Columns.Clear();
               targetTable.Body.Rows.Clear();

               var sourcePropertyList = sourceObject.GetType().GetProperties();
               Telerik.Reporting.TextBox textboxGroup;
               Telerik.Reporting.TextBox textBoxTable;
               Telerik.Reporting.TableGroup tableGroupColumn;
               int i = 0;
               foreach (var o in sourcePropertyList)
               {
                   tableGroupColumn = new TableGroup();

                   targetTable.Body.Columns.Add(new TableBodyColumn(Unit.Inch(1)));

                   textboxGroup = new Telerik.Reporting.TextBox();
                   textboxGroup.Value = o.Name;
                   textboxGroup.Size = new SizeU(Unit.Inch(1.1), Unit.Inch(0.3));
                   tableGroupColumn.ReportItem = textboxGroup;
                   targetTable.ColumnGroups.Add(tableGroupColumn);

                   textBoxTable = new Telerik.Reporting.TextBox();
                   targetTable.Body.SetCellContent(0, i++, textBoxTable);
                   textBoxTable.Value = "=Fields." + o.Name;
               }
               TableGroup tableGroupRow = new TableGroup();
               targetTable.RowGroups.Add(tableGroupRow);
               tableGroupRow.Grouping.Add(new Telerik.Reporting.Data.Grouping());
               targetTable.DataSource = sourceObject;
               return targetTable;
           }
       }

    }
}

[Steve]

Hello Joshua,

By the looks of it you're trying to inherit our report viewer and make changes to it. If you need to modify the WPF viewer template, you can go ahead and modify it as explained in the Creating Style in Expression Blend help article. If your goal is different, then please elaborate, so we can provide adequate suggestions. If you're creating your own model, take a look at the ReportProcessor Class.

Regards,
Steve
the Telerik team