C# List.TrimExcess方法代码示例

        List<TableGroup> _Items;			// list of TableGroup entries

		internal TableGroups(ReportDefn r, ReportLink p, XmlNode xNode) : base(r, p)
		{
			TableGroup tg;
            _Items = new List<TableGroup>();
			// Loop thru all the child nodes
			foreach(XmlNode xNodeLoop in xNode.ChildNodes)
			{
				if (xNodeLoop.NodeType != XmlNodeType.Element)
					continue;
				switch (xNodeLoop.Name)
				{
					case "TableGroup":
						tg = new TableGroup(r, this, xNodeLoop);
						break;
					default:	
						tg=null;		// don't know what this is
						// don't know this element - log it
						OwnerReport.rl.LogError(4, "Unknown TableGroups element '" + xNodeLoop.Name + "' ignored.");
						break;
				}
				if (tg != null)
					_Items.Add(tg);
			}
			if (_Items.Count == 0)
				OwnerReport.rl.LogError(8, "For TableGroups at least one TableGroup is required.");
			else
                _Items.TrimExcess();
		}

        List<ParameterValue> _Items; // list of ParameterValue

        #endregion Fields

        #region Constructors

        internal ParameterValues(ReportDefn r, ReportLink p, XmlNode xNode)
            : base(r, p)
        {
            ParameterValue pv;
            _Items = new List<ParameterValue>();
            // Loop thru all the child nodes
            foreach(XmlNode xNodeLoop in xNode.ChildNodes)
            {
                if (xNodeLoop.NodeType != XmlNodeType.Element)
                    continue;
                switch (xNodeLoop.Name)
                {
                    case "ParameterValue":
                        pv = new ParameterValue(r, this, xNodeLoop);
                        break;
                    default:
                        pv=null;		// don't know what this is
                        // don't know this element - log it
                        OwnerReport.rl.LogError(4, "Unknown ParameterValues element '" + xNodeLoop.Name + "' ignored.");
                        break;
                }
                if (pv != null)
                    _Items.Add(pv);
            }

            if (_Items.Count == 0)
                OwnerReport.rl.LogError(8, "For ParameterValues at least one ParameterValue is required.");
            else
                _Items.TrimExcess();
        }

        List<TableCell> _Items;			// list of TableCell

		internal TableCells(ReportDefn r, ReportLink p, XmlNode xNode) : base(r, p)
		{
			TableCell tc;
            _Items = new List<TableCell>();
			// Loop thru all the child nodes
			int colIndex=0;			// keep track of the column numbers
			foreach(XmlNode xNodeLoop in xNode.ChildNodes)
			{
				if (xNodeLoop.NodeType != XmlNodeType.Element)
					continue;
				switch (xNodeLoop.Name)
				{
					case "TableCell":
						tc = new TableCell(r, this, xNodeLoop, colIndex);
						colIndex += tc.ColSpan;
						break;
					default:	
						tc=null;		// don't know what this is
						// don't know this element - log it
						OwnerReport.rl.LogError(4, "Unknown TableCells element '" + xNodeLoop.Name + "' ignored.");
						break;
				}
				if (tc != null)
					_Items.Add(tc);
			}
			if (_Items.Count > 0)
                _Items.TrimExcess();
		}

        List<GroupExpression> _Items;			// list of GroupExpression

		internal GroupExpressions(ReportDefn r, ReportLink p, XmlNode xNode) : base(r, p)
		{
			GroupExpression g;
            _Items = new List<GroupExpression>();
			// Loop thru all the child nodes
			foreach(XmlNode xNodeLoop in xNode.ChildNodes)
			{
				if (xNodeLoop.NodeType != XmlNodeType.Element)
					continue;
				switch (xNodeLoop.Name)
				{
					case "GroupExpression":
						g = new GroupExpression(r, this, xNodeLoop);
						break;
					default:	
						g=null;		// don't know what this is
						// don't know this element - log it
						OwnerReport.rl.LogError(4, "Unknown GroupExpressions element '" + xNodeLoop.Name + "' ignored.");
						break;
				}
				if (g != null)
					_Items.Add(g);
			}
			if (_Items.Count == 0)
				OwnerReport.rl.LogError(8, "GroupExpressions require at least one GroupExpression be defined.");
			else
                _Items.TrimExcess();
		}

        List<DataPoint> _Items;			// list of datapoint

		internal DataPoints(ReportDefn r, ReportLink p, XmlNode xNode) : base(r, p)
		{
			DataPoint dp;
            _Items = new List<DataPoint>();
			// Loop thru all the child nodes
			foreach(XmlNode xNodeLoop in xNode.ChildNodes)
			{
				if (xNodeLoop.NodeType != XmlNodeType.Element)
					continue;
				switch (xNodeLoop.Name)
				{
					case "DataPoint":
						dp = new DataPoint(r, this, xNodeLoop);
						break;
					default:	
						dp=null;		// don't know what this is
						// don't know this element - log it
						OwnerReport.rl.LogError(4, "Unknown DataPoints element '" + xNodeLoop.Name + "' ignored.");
						break;
				}
				if (dp != null)
					_Items.Add(dp);
			}
			if (_Items.Count == 0)
				OwnerReport.rl.LogError(8, "For DataPoints at least one DataPoint is required.");
			else
                _Items.TrimExcess();
		}

		internal ColumnGroupings(ReportDefn r, ReportLink p, XmlNode xNode) : base(r, p)
		{
			ColumnGrouping g;
            _Items = new List<ColumnGrouping>();
			// Loop thru all the child nodes
			foreach(XmlNode xNodeLoop in xNode.ChildNodes)
			{
				if (xNodeLoop.NodeType != XmlNodeType.Element)
					continue;
				switch (xNodeLoop.Name)
				{
					case "ColumnGrouping":
						g = new ColumnGrouping(r, this, xNodeLoop);
						break;
					default:	
						g=null;		// don't know what this is
						// don't know this element - log it
						OwnerReport.rl.LogError(4, "Unknown ColumnGroupings element '" + xNodeLoop.Name + "' ignored.");
						break;
				}
				if (g != null)
					_Items.Add(g);
			}
			if (_Items.Count == 0)
				OwnerReport.rl.LogError(8, "For ColumnGroups at least one ColumnGrouping is required.");
			else
			{
                _Items.TrimExcess();
				_StaticCount = GetStaticCount();
			}
		}

        List<Filter> _Items;			// list of Filter

		internal Filters(ReportDefn r, ReportLink p, XmlNode xNode) : base(r, p)
		{
			Filter f;
            _Items = new List<Filter>();
			// Loop thru all the child nodes
			foreach(XmlNode xNodeLoop in xNode.ChildNodes)
			{
				if (xNodeLoop.NodeType != XmlNodeType.Element)
					continue;
				switch (xNodeLoop.Name)
				{
					case "Filter":
						f = new Filter(r, this, xNodeLoop);
						break;
					default:	
						f=null;		// don't know what this is
						// don't know this element - log it
						OwnerReport.rl.LogError(4, "Unknown Filters element '" + xNodeLoop.Name + "' ignored.");
						break;
				}
				if (f != null)
					_Items.Add(f);
			}
			if (_Items.Count == 0)
				OwnerReport.rl.LogError(8, "Filters require at least one Filter be defined.");
			else
				_Items.TrimExcess();
		}

        bool _ContainsArray;                   // true if any of the parameters is an array reference

		internal QueryParameters(ReportDefn r, ReportLink p, XmlNode xNode) : base(r, p)
		{
            _ContainsArray = false;
			QueryParameter q;
            _Items = new List<QueryParameter>();
			// Loop thru all the child nodes
			foreach(XmlNode xNodeLoop in xNode.ChildNodes)
			{
				if (xNodeLoop.NodeType != XmlNodeType.Element)
					continue;
				switch (xNodeLoop.Name)
				{
					case "QueryParameter":
						q = new QueryParameter(r, this, xNodeLoop);
						break;
					default:	
						q=null;		// don't know what this is
						// don't know this element - log it
						OwnerReport.rl.LogError(4, "Unknown QueryParameters element '" + xNodeLoop.Name + "' ignored.");
						break;
				}
				if (q != null)
					_Items.Add(q);
			}
			if (_Items.Count == 0)
				OwnerReport.rl.LogError(8, "For QueryParameters at least one QueryParameter is required.");
			else
                _Items.TrimExcess();
		}

        List<DrillthroughParameter> _Items;			// list of report items

		internal DrillthroughParameters(ReportDefn r, ReportLink p, XmlNode xNode) : base(r, p)
		{
			DrillthroughParameter d;
            _Items = new List<DrillthroughParameter>();
			// Loop thru all the child nodes
			foreach(XmlNode xNodeLoop in xNode.ChildNodes)
			{
				if (xNodeLoop.NodeType != XmlNodeType.Element)
					continue;
				switch (xNodeLoop.Name)
				{
					case "Parameter":
						d = new DrillthroughParameter(r, this, xNodeLoop);
						break;
					default:	
						d=null;		// don't know what this is
						// don't know this element - log it
						OwnerReport.rl.LogError(4, "Unknown Parameters element '" + xNodeLoop.Name + "' ignored.");
						break;
				}
				if (d != null)
					_Items.Add(d);
			}
			if (_Items.Count > 0)
                _Items.TrimExcess();
		}

        List<ChartSeries> _Items;			// list of chart series

		internal ChartData(ReportDefn r, ReportLink p, XmlNode xNode) : base(r, p)
		{
			ChartSeries cs;
            _Items = new List<ChartSeries>();
			// Loop thru all the child nodes
			foreach(XmlNode xNodeLoop in xNode.ChildNodes)
			{
				if (xNodeLoop.NodeType != XmlNodeType.Element)
					continue;
				switch (xNodeLoop.Name)
				{
					case "ChartSeries":
						cs = new ChartSeries(r, this, xNodeLoop);
						break;
					default:	
						cs=null;		// don't know what this is
						// don't know this element - log it
						OwnerReport.rl.LogError(4, "Unknown ChartData element '" + xNodeLoop.Name + "' ignored.");
						break;
				}
				if (cs != null)
					_Items.Add(cs);
			}
			if (_Items.Count == 0)
				OwnerReport.rl.LogError(8, "For ChartData at least one ChartSeries is required.");
			else
                _Items.TrimExcess();
		}

        List<StaticColumn> _Items;			// list of StaticColumn

		internal StaticColumns(ReportDefn r, ReportLink p, XmlNode xNode) : base(r, p)
		{
			StaticColumn sc;
            _Items = new List<StaticColumn>();
			// Loop thru all the child nodes
			foreach(XmlNode xNodeLoop in xNode.ChildNodes)
			{
				if (xNodeLoop.NodeType != XmlNodeType.Element)
					continue;
				switch (xNodeLoop.Name)
				{
					case "StaticColumn":
						sc = new StaticColumn(r, this, xNodeLoop);
						break;
					default:	
						sc=null;		// don't know what this is
						// don't know this element - log it
						OwnerReport.rl.LogError(4, "Unknown StaticColumns element '" + xNodeLoop.Name + "' ignored.");
						break;
				}
				if (sc != null)
					_Items.Add(sc);
			}
			if (_Items.Count == 0)
				OwnerReport.rl.LogError(8, "For StaticColumns at least one StaticColumn is required.");
			else
                _Items.TrimExcess();
		}

        List<SeriesGrouping> _Items;			// list of SeriesGrouping

		internal SeriesGroupings(ReportDefn r, ReportLink p, XmlNode xNode) : base(r, p)
		{
			SeriesGrouping sg;
            _Items = new List<SeriesGrouping>();
			// Loop thru all the child nodes
			foreach(XmlNode xNodeLoop in xNode.ChildNodes)
			{
				if (xNodeLoop.NodeType != XmlNodeType.Element)
					continue;
				switch (xNodeLoop.Name)
				{
					case "SeriesGrouping":
						sg = new SeriesGrouping(r, this, xNodeLoop);
						break;
					default:
						sg=null;		// don't know what this is
						break;
				}
				if (sg != null)
					_Items.Add(sg);
			}
			if (_Items.Count == 0)
				OwnerReport.rl.LogError(8, "For SeriesGroupings at least one SeriesGrouping is required.");
			else
                _Items.TrimExcess();
		}

        List<SortBy> _Items; // list of SortBy

        #endregion Fields

        #region Constructors

        internal Sorting(ReportDefn r, ReportLink p, XmlNode xNode)
            : base(r, p)
        {
            SortBy s;
            _Items = new List<SortBy>();
            // Loop thru all the child nodes
            foreach(XmlNode xNodeLoop in xNode.ChildNodes)
            {
                if (xNodeLoop.NodeType != XmlNodeType.Element)
                    continue;
                switch (xNodeLoop.Name)
                {
                    case "SortBy":
                        s = new SortBy(r, this, xNodeLoop);
                        break;
                    default:
                        s=null;		// don't know what this is
                        // don't know this element - log it
                        OwnerReport.rl.LogError(4, "Unknown Sorting element '" + xNodeLoop.Name + "' ignored.");
                        break;
                }
                if (s != null)
                    _Items.Add(s);
            }
            if (_Items.Count == 0)
                OwnerReport.rl.LogError(8, "Sorting requires at least one SortBy be defined.");
            else
                _Items.TrimExcess();
        }

        List<CodeModule> _Items; // list of code module

        #endregion Fields

        #region Constructors

        internal CodeModules(ReportDefn r, ReportLink p, XmlNode xNode)
            : base(r, p)
        {
            _Items = new List<CodeModule>();
            // Loop thru all the child nodes
            foreach(XmlNode xNodeLoop in xNode.ChildNodes)
            {
                if (xNodeLoop.NodeType != XmlNodeType.Element)
                    continue;
                if (xNodeLoop.Name == "CodeModule")
                {
                    CodeModule cm = new CodeModule(r, this, xNodeLoop);
                    _Items.Add(cm);
                }
                else
                {
                    // don't know this element - log it
                    OwnerReport.rl.LogError(4, "Unknown CodeModules element '" + xNodeLoop.Name + "' ignored.");
                }
            }
            if (_Items.Count == 0)
                OwnerReport.rl.LogError(8, "For CodeModules at least one CodeModule is required.");
            else
                _Items.TrimExcess();
        }

        List<MatrixRow> _Items; // list of MatrixRow

        #endregion Fields

        #region Constructors

        internal MatrixRows(ReportDefn r, ReportLink p, XmlNode xNode)
            : base(r, p)
        {
            MatrixRow m;
            _Items = new List<MatrixRow>();
            // Loop thru all the child nodes
            foreach(XmlNode xNodeLoop in xNode.ChildNodes)
            {
                if (xNodeLoop.NodeType != XmlNodeType.Element)
                    continue;
                switch (xNodeLoop.Name)
                {
                    case "MatrixRow":
                        m = new MatrixRow(r, this, xNodeLoop);
                        break;
                    default:
                        m=null;		// don't know what this is
                        // don't know this element - log it
                        OwnerReport.rl.LogError(4, "Unknown MatrixRows element '" + xNodeLoop.Name + "' ignored.");
                        break;
                }
                if (m != null)
                    _Items.Add(m);
            }
            if (_Items.Count == 0)
                OwnerReport.rl.LogError(8, "For MatrixRows at least one MatrixRow is required.");
            else
                _Items.TrimExcess();
        }