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Andrey Abramov
640
Group By DateTime column works buggy
posted

Hello,

I'm exprierencing strange behaviour of WHDG when grouped by DateTime column.

It either doesn't allow to expand grouped recods at all (in my case when groupped by CheckHed.ClearedDate) or expands only the first one and then doesn't expand others (WHDG expand only first expanded even when another row clicked to be expanded)

Page code is following

hDate.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="hDate.aspx.cs" Inherits="hDate" %>
<%@ Register TagPrefix="ig" Namespace="Infragistics.Web.UI.GridControls" Assembly="Infragistics35.Web.v10.3, Version=10.3.20103.2217, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="sm" runat="server"></asp:ScriptManager>
        <asp:UpdatePanel ID="HUP" ChildrenAsTriggers="true" runat="server">
            <ContentTemplate>
            </ContentTemplate>
        </asp:UpdatePanel>
    </form>
</body>
</html>

hDate.aspx.cs

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Linq.Dynamic;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
using Infragistics.Web.UI.GridControls;

public partial class hDate : System.Web.UI.Page
{
    private Infragistics.Web.UI.DataSourceControls.WebHierarchicalDataSource whds = new Infragistics.Web.UI.DataSourceControls.WebHierarchicalDataSource();
    private WebHierarchicalDataGrid WHDG;

    protected override void CreateChildControls()
    {
        base.CreateChildControls();

        #region WHDG
        this.WHDG = new WebHierarchicalDataGrid
        {
            ID = "WHDG",
            EnableViewState = true,
            EnableAjax = false,
            EnableDataViewState = false,
            EnableAjaxViewState = false,
            AutoGenerateBands = false,
            DataKeyFields = "k_0",
            AutoGenerateColumns = false
        };

        if (WHDG.Behaviors.Selection == null)
        {
            Selection sel = WHDG.Behaviors.CreateBehavior<Selection>();

            sel.Enabled = true;
            sel.AutoPostBackFlags.RowSelectionChanged = true;
            sel.RowSelectType = SelectType.Multiple;
            sel.CellSelectType = SelectType.None;
            sel.ColumnSelectType = SelectType.None;
            sel.CellClickAction = CellClickAction.Row;
            WHDG.Behaviors.Add(sel);
        }

        WHDG.Behaviors.Selection.Enabled = true;
        WHDG.Behaviors.Selection.AutoPostBackFlags.RowSelectionChanged = true;
        WHDG.Behaviors.Selection.RowSelectType = SelectType.Single;
        WHDG.Behaviors.Selection.CellSelectType = SelectType.None;
        WHDG.Behaviors.Selection.ColumnSelectType = SelectType.None;
        WHDG.Behaviors.Selection.CellClickAction = CellClickAction.Row;

        WHDG.Behaviors.Selection.CellSelectType = SelectType.None;
        WHDG.Behaviors.Selection.AutoPostBackFlags.RowSelectionChanged = true;

        if (this.WHDG.GridView.Behaviors.ColumnResizing == null)
            this.WHDG.GridView.Behaviors.Add(new ColumnResizing { Enabled = true });
        this.WHDG.GridView.Behaviors.ColumnResizing.Enabled = true;

        this.HUP.ContentTemplateContainer.Controls.Add(this.WHDG);

        if (!Page.IsPostBack)
        {
            BoundDataField item = new BoundDataField { Key = "k_0" };
            item.DataFieldName = "k_0";
            item.Type = typeof(DateTime);
            item.Header.Text = "g1";
            item.Width = Unit.Pixel(100);
            this.WHDG.Columns.Add(item);

            item = new BoundDataField { Key = "Count" };
            item.DataFieldName = "Count";
            item.Type = typeof(decimal);
            item.Header.Text = "Amount";
            this.WHDG.Columns.Add(item);

            Band childBand, band;

            //  Table
            childBand = new Band
            {
                //Key = "Level2",
                DataMember = "Level1",
                AutoGenerateColumns = true,
                DefaultColumnWidth = Unit.Pixel(100)
            };

            this.WHDG.Bands.Add(childBand);
            band = childBand;
            band.Behaviors.Add(new ColumnResizing { Enabled = true });
            band.Behaviors.Add(new Sorting { Enabled = true });
        }
        #endregion
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        this.EnsureChildControls();

        #region WHDG band / column creation

        if (this.WHDG.Columns.Count == 0)
        {
            BoundDataField item = new BoundDataField { Key = "k_0" };
            this.WHDG.Columns.Add(item);
            item.DataFieldName = "k_0";
            item.Header.Text = "g1";
            item.Width = Unit.Pixel(100);

            item = new BoundDataField { Key = "Count" };
            this.WHDG.Columns.Add(item);
            item.DataFieldName = "Count";
            item.Type = typeof(decimal);
            item.Header.Text = "Amount";

            //  Table
            Band childBand = new Band
            {
                DataMember = "Level2",
                AutoGenerateColumns = true,
                DefaultColumnWidth = Unit.Pixel(100)
            };
            this.WHDG.Bands.Add(childBand);
        }

        #endregion

        this.FillHWDG(String.Empty);
    }

    private void FillHWDG(string filter)
    {
        DataSet ds = new DataSet();
        ds.ReadXml("c:\\temp\\bad_date.xml", XmlReadMode.ReadSchema);

        this.CreateHierarchyDataSource(ds.Tables[0], new[] { "CheckHed.ClearedDate" }, filter);

        this.WHDG.DataSource = whds;
    }

    #region CreateHierarchyDataSource
    void CreateHierarchyDataSource(DataTable dataTable, string[] FieldsToGroupBy, string filter)
    {
        Infragistics.Web.UI.DataSourceControls.DataView view;
        Infragistics.Web.UI.DataSourceControls.DataRelation dr;
        List<string> parentColumns, childColumns;

        if (!String.IsNullOrEmpty(filter))
            dataTable = new DataView(dataTable) { RowFilter = filter }.ToTable();

        int j, i = 0, cnt = FieldsToGroupBy.Length;
        foreach (string GrouppingFieldName in FieldsToGroupBy)
        {
            StringBuilder groupByStatement = new StringBuilder("new (");
            StringBuilder selectStatement = new StringBuilder("new (");
            StringBuilder orderByStatement = new StringBuilder();

            for (j = 0; j <= i; j++)
            {
                if (j > 0)
                {
                    groupByStatement.Append(", ");
                    selectStatement.Append(", ");
                    orderByStatement.Append(", ");
                }

                groupByStatement.Append("it[\"");
                groupByStatement.Append(FieldsToGroupBy[j]);
                groupByStatement.Append("\"] as g_");
                groupByStatement.Append(j.ToString());

                selectStatement.Append("Key.g_");
                selectStatement.Append(j.ToString());
                selectStatement.Append(" as k_");
                selectStatement.Append(j.ToString());

                orderByStatement.Append("k_");
                orderByStatement.Append(j.ToString());
            }

            var q = (i + 1) < cnt
                ? dataTable.AsEnumerable().AsQueryable()
                    .GroupBy(groupByStatement.AppendFormat(", it[\"{0}\"] as g_{1})", FieldsToGroupBy[j], j).ToString(), "it")
                    .Select(selectStatement.AppendFormat(", Key.g_{0} as k_{0})", j).ToString())
                    .GroupBy("new (k_" + String.Join(", k_", Enumerable.Range(0, j).ToList().ConvertAll(x => x.ToString()).ToArray()) + ")", "it")
                    .Select("new (Key.k_" + String.Join(", Key.k_", Enumerable.Range(0, j).ToList().ConvertAll(x => x.ToString()).ToArray()) + ", it.Count() as Count)")
                    .OrderBy(orderByStatement.ToString(), null)
                : dataTable.AsEnumerable().AsQueryable()
                    .GroupBy(groupByStatement.Append(")").ToString(), "it")
                    .Select(selectStatement.Append(", it.Count() as Count)").ToString())
                    .OrderBy(orderByStatement.ToString(), null);

            view = new Infragistics.Web.UI.DataSourceControls.DataView();
            view.ID = "Level" + i;
            view.DataSource = q;
            whds.DataViews.Add(view);

            if (i > 0)
            {
                dr = new Infragistics.Web.UI.DataSourceControls.DataRelation
                {
                    ParentDataViewID = "Level" + (i - 1),
                    ChildDataViewID = view.ID
                };

                parentColumns = new List<string>();
                childColumns = new List<string>();
                for (j = 0; j < i; j++)
                {
                    parentColumns.Add("k_" + j);
                    childColumns.Add("k_" + j);
                }

                dr.ParentColumns = parentColumns.ToArray();
                dr.ChildColumns = childColumns.ToArray();
                whds.DataRelations.Add(dr);
            }

            i++;
        }

        //  Last 'Data' view
        view = new Infragistics.Web.UI.DataSourceControls.DataView();
        view.ID = "Level" + i;
        view.DataSource = dataTable;
        whds.DataViews.Add(view);

        if (i > 0)
        {
            dr = new Infragistics.Web.UI.DataSourceControls.DataRelation
            {
                ParentDataViewID = "Level" + (i - 1),
                ChildDataViewID = view.ID
            };
            parentColumns = new List<string>();
            childColumns = new List<string>();
            for (j = 0; j < i; j++)
            {
                parentColumns.Add("k_" + j);
                childColumns.Add(FieldsToGroupBy[j]);
            }

            dr.ParentColumns = parentColumns.ToArray();
            dr.ChildColumns = childColumns.ToArray();
            whds.DataRelations.Add(dr);
        }
    }
    #endregion
}

-----------------------------------------------------------------------------

xml with data is attached . You also need DynamicLinq (Dynamic.cs) to run this sample. It can be found in samples here http://msdn.microsoft.com/en-us/vstudio/bb894665.aspx for example.

You can change group by column easily here

this.CreateHierarchyDataSource(ds.Tables[0], new[] { "CheckHed.ClearedDate" }, filter);

I tried to group by CheckHed.CheckDate (only first time expand works OK, if you try to expand any other row, you will not be able to do this) and by CheckHed.ClearedDate (not expanded at all).

Grouping by any other column works without problems.

The way DataSource is created is the result of business case. Exact structure and depth of grouping is known only at Page_Load and data to display comes as DataSet.

My version of controls is 10.3.20103.2217

Can someone help?

 

Regards,

Andrey.

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