WPF报表自定义通用可筛选列头-WPF特工队内部资料

    /// <summary>
    /// 描述 <see cref="ColumnItem"/> 动态列项目，用于在后台构建多列标题绑定项
    /// </summary>
    [Serializable]
    public sealed class ColumnItem : NotifyPropertyChangedBase, ICloneable
    {
        /// <summary>
        /// 实例化 <see cref="ColumnItem"/> 类新实例，一般用于顶级标题栏
        /// </summary>
        /// <param name="name">默认列名</param>
        public ColumnItem(String name)
            : this(name, "")
        {
        }

        /// <summary>
        /// 实例化 <see cref="ColumnItem"/> 类新实例
        /// </summary>
        /// <param name="name">默认列名</param>
        /// <param name="bindingName">绑定名称</param>
        public ColumnItem(String name, String bindingName)
            : this(name, bindingName, "", "", HorizontalAlignment.Left, 80)
        {
        }

        /// <summary>
        /// 实例化 <see cref="ColumnItem"/> 类新实例
        /// </summary>
        /// <param name="name">默认列名</param>
        /// <param name="bindingName">绑定名称</param>
        /// <param name="converterResourceKey">绑定的资源键(传递此资源时，要在资源中声明)</param>
        /// <param name="stringFormat">字符串格式</param>
        /// <param name="alignment">对齐方式</param>
        /// <param name="width">列宽</param>
        /// <param name="visibility">是否显示</param>
        public ColumnItem(String name, String bindingName, String converterResourceKey, String stringFormat, HorizontalAlignment alignment, int width, Visibility visibility)
            : this(name, "", bindingName, converterResourceKey, stringFormat, alignment, width, visibility, ColumnType.TextBlock)
        {

        }

        /// <summary>
        /// 实例化 <see cref="ColumnItem"/> 类新实例
        /// </summary>
        /// <param name="name">默认列名</param>
        /// <param name="bindingName">绑定名称</param>
        /// <param name="converterResourceKey">绑定的资源键(传递此资源时，要在资源中声明)</param>
        /// <param name="stringFormat">字符串格式</param>
        /// <param name="alignment">对齐方式</param>
        /// <param name="width">列宽</param>
        public ColumnItem(String name, String bindingName, String converterResourceKey, String stringFormat, HorizontalAlignment alignment, int width)
            : this(name, "", bindingName, converterResourceKey, stringFormat, alignment, width, Visibility.Visible, ColumnType.TextBlock)
        {

        }

        /// <summary>
        /// 实例化 <see cref="ColumnItem"/> 类新实例
        /// </summary>
        /// <param name="name">默认列名</param>
        /// <param name="extendName">扩展列名</param>
        /// <param name="bindingName">绑定名称</param>
        /// <param name="converterResourceKey">绑定的资源键(传递此资源时，要在资源中声明)</param>
        /// <param name="stringFormat">字符串格式</param>
        /// <param name="alignment">对齐方式</param>
        /// <param name="width">列宽</param>
        public ColumnItem(String name, String extendName, String bindingName, String converterResourceKey, String stringFormat, HorizontalAlignment alignment, int width)
       : this(name, extendName, bindingName, converterResourceKey, stringFormat, alignment, width, Visibility.Visible, ColumnType.TextBlock)
        {

        }

        /// <summary>
        /// 实例化 <see cref="ColumnItem"/> 类新实例
        /// </summary>
        /// <param name="name">默认列名</param>
        /// <param name="bindingName">绑定名称</param>
        /// <param name="converterResourceKey">绑定的资源键(传递此资源时，要在资源中声明)</param>
        /// <param name="stringFormat">字符串格式</param>
        /// <param name="alignment">对齐方式</param>
        /// <param name="width">列宽</param>
        /// <param name="columnType">数据模板内容类型</param>
        public ColumnItem(String name, String bindingName, String converterResourceKey, String stringFormat, HorizontalAlignment alignment, int width, ColumnType columnType)
            : this(name, "", bindingName, converterResourceKey, stringFormat, alignment, width, Visibility.Visible, columnType)
        {

        }
        /// <summary>
        /// 实例化 <see cref="ColumnItem"/> 类新实例
        /// </summary>
        /// <param name="name">默认列名</param>
        /// <param name="extendName">扩展列名</param>
        /// <param name="bindingName">绑定名称</param>
        /// <param name="converterResourceKey">绑定的资源键(传递此资源时，要在资源中声明)</param>
        /// <param name="stringFormat">字符串格式</param>
        /// <param name="alignment">对齐方式</param>
        /// <param name="width">列宽</param>
        /// <param name="columnType">数据模板内容类型</param>
        public ColumnItem(String name, String extendName, String bindingName, String converterResourceKey, String stringFormat, HorizontalAlignment alignment, int width, Visibility visibility)
            : this(name, extendName, bindingName, converterResourceKey, stringFormat, alignment, width, visibility, ColumnType.TextBlock)
        {

        }

        /// <summary>
        /// 实例化 <see cref="ColumnItem"/> 类新实例
        /// </summary>
        /// <param name="name">默认列名</param>
        /// <param name="extendName">扩展列名</param>
        /// <param name="bindingName">绑定名称</param>
        /// <param name="converterResourceKey">绑定的资源键(传递此资源时，要在资源中声明)</param>
        /// <param name="stringFormat">字符串格式</param>
        /// <param name="alignment">对齐方式</param>
        /// <param name="width">列宽</param>
        /// <param name="columnType">数据模板内容类型</param>
        public ColumnItem(String name, String extendName, String bindingName, String converterResourceKey, String stringFormat, HorizontalAlignment alignment, int width, ColumnType columnType)
            : this(name, extendName, bindingName, converterResourceKey, stringFormat, alignment, width, Visibility.Visible, columnType)
        {

        }

        /// <summary>
        /// 实例化 <see cref="ColumnItem"/> 类新实例
        /// </summary>
        /// <param name="name">默认列名</param>
        /// <param name="extendName">扩展列名</param>
        /// <param name="bindingName">绑定名称</param>
        /// <param name="converterResourceKey">绑定的资源键(传递此资源时，要在资源中声明)</param>
        /// <param name="stringFormat">字符串格式</param>
        /// <param name="alignment">对齐方式</param>
        /// <param name="width">列宽</param>
        /// <param name="visibility">是否显示</param>
        /// <param name="columnType">数据模板内容类型</param>
        public ColumnItem(String name, String extendName, String bindingName, String converterResourceKey, String stringFormat, HorizontalAlignment alignment, int width, Visibility visibility, ColumnType columnType)
        {
            this.ID = Guid.NewGuid();
            if (String.IsNullOrWhiteSpace(name))
            {
                throw new ArgumentNullException("titleName", "标题不能为 null 或 空白字符串。");
            }
            this.Name = name;
            this.ExtendName = extendName;
            this.BindingName = (String.IsNullOrWhiteSpace(bindingName)) ? "simple" : bindingName;
            this.ConverterResourceKey = converterResourceKey;
            this.StringFormat = stringFormat;
            this.Alignment = alignment;
            this.Width = width;
            this.Visibility = visibility;
            this.Type = columnType;
            this.Columns = new ColumnItemCollection(this);  //初始化
            this.Level = 0; //默认
            this.TextWrapping = System.Windows.TextWrapping.NoWrap;
        }



        private Int32 mWidth;
        private Visibility mVisibility;
        private HorizontalAlignment mAlignment;

        public Guid ID { get; private set; }


        /// <summary>
        /// 列宽
        /// </summary>
        public Int32 Width
        {
            get { return mWidth; }
            set { mWidth = value; OnPropertyChanged("Width"); }
        }


        /// <summary>
        /// 列显示
        /// </summary>
        public Visibility Visibility
        {
            get { return mVisibility; }
            set { mVisibility = value; OnPropertyChanged("Visibility"); }
        }

        /// <summary>
        /// 获取或设置水平对齐方式
        /// </summary>
        public HorizontalAlignment Alignment
        {
            get { return mAlignment; }
            set { mAlignment = value; OnPropertyChanged("Alignment"); }
        }

        /// <summary>
        /// 默认列名
        /// </summary>
        public String Name { get; private set; }

        /// <summary>
        /// 扩展列名
        /// </summary>
        public String ExtendName { get; set; }

        /// <summary>
        /// 绑定名称
        /// </summary>
        public String BindingName { get; set; }

        /// <summary>
        /// 获取或设置转换资源键
        /// </summary>
        public String ConverterResourceKey { get; set; }

        /// <summary>
        /// 获取或设置字符串格式
        /// </summary>
        public String StringFormat { get; set; }

        /// <summary>
        /// 控件类型
        /// </summary>
        public ColumnType Type { get; set; }

        /// <summary>
        /// 获取或设置是否自动换行(默认为 NoWrap)
        /// </summary>
        public TextWrapping TextWrapping { get; set; }

        public ColumnComboBox ColumnComboBox { get; set; }


        /// <summary>
        /// 获取列集合
        /// </summary>
        public ColumnItemCollection Columns { get; private set; }

        /// <summary>
        /// 获取级别
        /// </summary>
        public int Level { get; internal set; }

        /// <summary>
        /// 获取父级
        /// </summary>
        public ColumnItem Parent { get; internal set; }

        /// <summary>
        /// 获取子级深度
        /// </summary>
        /// <returns></returns>
        public int ChildLevelDepth()
        {
            if (this.Columns.Count > 0)
            {
                return this.CalcLevelDepth(true) - this.Level;
            }
            else
            {
                return 0;
            }
        }

        /// <summary>
        /// 计算获取级别深度
        /// </summary>
        /// <param name="child">计算子级</param>
        /// <returns></returns>
        private int CalcLevelDepth(bool child)
        {
            if (this.Columns.Count > 0)
            {
                int level = this.Columns.Max(c => c.CalcLevelDepth(child));
                if (child)
                {
                    return level;
                }
                else
                {
                    return level - this.Level;
                }
            }
            else
            {
                return this.Level;
            }
        }

        /// <summary>
        /// 获取当前列的所有最后子集的总数
        /// </summary>
        /// <returns></returns>
        public int LastLevelColumnCount()
        {
            int value = 0;
            if (this.Columns.Count > 0)
            {
                value += this.Columns.Sum(c => c.LastLevelColumnCount());
            }
            else
            {
                value = 1;
            }
            return value;
        }

        /// <summary>
        /// 合计总宽度
        /// </summary>
        /// <returns></returns>
        public int TotalGroupWidth()
        {
            int value;
            if (this.Columns.Count > 0)
            {
                value = this.Columns.Sum(c => c.TotalGroupWidth());
            }
            else
            {
                value = this.Width;
            }
            return value;
        }

        /// <summary>
        /// 验证(必须设置绑定值)
        /// </summary>
        internal void CreateVerify()
        {
            if (this.Columns.Count == 0)
            {
                if (String.IsNullOrWhiteSpace(this.BindingName))
                {
                    throw new ArgumentNullException(String.Format("{0} 为末级时，绑定路径 BindingPath 为 null 或空白字符串。", this.Name));
                }
            }
        }

        public void SetColumnComboBox(ColumnComboBox columnComboBox)
        {
            this.ColumnComboBox = columnComboBox;
        }

        #region ICloneable ColumnItem 对象深度复制  
        public object Clone()
        {
            ColumnItem item = (ColumnItem)this.MemberwiseClone();
            item.Parent = null;
            item.Name = this.Name;
            item.ExtendName = this.ExtendName;
            item.Columns = new ColumnItemCollection(item);
            foreach (var o in this.Columns)
            {
                var _o = (ColumnItem)o.Clone();
                _o.Parent = null;
                item.Columns.Add(_o);
            }
            return item;
        }
        private void OnClone(ColumnItemCollection collection, ColumnItemCollection collection2)
        {
            foreach (var item in collection2)
            {
                var _o = (ColumnItem)item.Clone();
                if (item.Columns.Count > 0)
                {
                    OnClone(item.Columns, item.Columns);
                }
                collection.Add(_o);
            }
        }


        #endregion
    }
    [Serializable]
    public class ColumnComboBox : NotifyPropertyChangedBase
    {
        public ColumnComboBox(String comboBoxBindName)
            : this(comboBoxBindName, "", "", "")
        {

        }
        public ColumnComboBox(String comboBoxBindName, String selectedItemBindName)
            : this(comboBoxBindName, selectedItemBindName, "", "")
        {

        }
        public ColumnComboBox(String comboBoxBindName, String selectedItemBindName, String selectedValuePath, String displayMemberPath)
        {
            this.mComboBoxBindName = comboBoxBindName;
            this.mSelectedItemBindName = selectedItemBindName;
            this.mSelectedValuePath = selectedValuePath;
            this.mDisplayMemberPath = displayMemberPath;
        }


        private String mSelectedItemBindName;
        private String mComboBoxBindName;
        private String mSelectedValuePath = "";
        private String mDisplayMemberPath = "";
        private ObservableCollection<string> itemSource;  //

        /// <summary>
        /// 绑定资源
        /// </summary>
        public String ComboBoxBindName
        {
            get
            {
                return mComboBoxBindName;
            }

            set
            {
                mComboBoxBindName = value;
            }
        }

        /// <summary>
        /// 选中值
        /// </summary>
        public string SelectedValuePath
        {
            get
            {
                return mSelectedValuePath;
            }

            set
            {
                mSelectedValuePath = value;
            }
        }

        /// <summary>
        /// 显示值
        /// </summary>
        public string DisplayMemberPath
        {
            get
            {
                return mDisplayMemberPath;
            }

            set
            {
                mDisplayMemberPath = value;
            }
        }

        public string SelectedItemBindName
        {
            get
            {
                return mSelectedItemBindName;
            }

            set
            {
                mSelectedItemBindName = value;
            }
        }
    }

    /// <summary>
    /// <see cref="DataGrid"/>控件数据模板<see cref="DataTemplate"/>构建服务，
    /// 根据<see cref="DataTemplate"/>的内容多样性构建不同的显示控件，主要针对单一控件显示
    /// </summary>
    public interface IDataGridDataTemplateService
    {
        /// <summary>
        /// 动态构内容绑定模板
        /// </summary>
        /// <param name="column">自定义列信息</param>
        /// <param name="bindingParameter">是否参数转换</param>
        /// <param name="gridColum">绑定的子列索引 </param>
        /// <returns></returns>
        String CreateCellXaml(ColumnItem column, bool bindingParameter, int? gridColum);
    }

    /// <summary>
    /// 自定义模板列构建帮助类
    /// </summary>
    internal static class DataGridTemplateColumnHelper
    {
        /// <summary>
        /// 设置标题Grid列宽度，组织出一个复杂的标题格式
        /// </summary>
        /// <param name="sbStr">标题字符串</param>
        /// <param name="column">列</param>
        /// <param name="index">列索引，用于控制标题内容显示的边线</param>
        private static void SetColumnDefinition(StringBuilder sbStr, ColumnItem column, ref int index)
        {
            if (column.Columns.Count > 0)
            {
                foreach (var item in column.Columns)
                {
                    SetColumnDefinition(sbStr, item, ref index);
                }
            }
            else  //默认包含一列
            {
                if (index > 0) //当index>0时，添加一个右侧的Rectangle矩形图形边线位置，默认是左侧和右侧是不绘制边线
                {
                    sbStr.AppendLine("<ColumnDefinition Width=\"1\" />");
                }
                //添加一个标题的显示内容列，并设置固定宽度
                sbStr.AppendLine(String.Format("<ColumnDefinition Width=\"{0}*\"/>", column.Width));
                index++;
            }
        }

        /// <summary>
        /// 设置标题内容
        /// </summary>
        /// <param name="sbStr"></param>
        /// <param name="column">当前列</param>
        /// <param name="totalcolumnCount">总列数</param>
        /// <param name="colIndex">内容索引列</param>
        private static void SetContentPresenter(StringBuilder sbStr, ColumnItem column, int totalcolumnCount, ref int colIndex)
        {
            //计算出当前列所占的Grid的ColumnDefinition数目
            int columnOffset = column.LastLevelColumnCount() * 2 - 1;
            //计算当前列在整个标题中的标题行深度
            int LevelDepth = column.Parent.ChildLevelDepth();
            //用于控制绘制标题内容下面显示下线，以及当前显示标题的Grid.RowSpan
            int rowOffset;  //一般情况默认为1
            if (column.Columns.Count == 0)//
            {
                rowOffset = LevelDepth * 2 - 1;
            }
            else
            {
                rowOffset = 1; //
            }
            //计算出当前标题在第几个RowDefinition画内容下边线
            int lineRow = (column.Level * 2 + 1) + (rowOffset - 1);  
            //计算出当前标题在第几个ColumnDefinition画内容右边线
            int lineColumn = (colIndex + 1) + (columnOffset - 1);
            //画标题，并设置当前标题在Grid中的定位
            sbStr.AppendLine(
                CreateDataGridTemplateColumnHeaderContent(
                    String.IsNullOrWhiteSpace(column.ExtendName) ? column.Name : column.ExtendName,  //标题显示内容
                    column.Level * 2,  //所属行，标题内容显示的Grid.Row
                    rowOffset,  //标题内容显示的Grid.RowSpan
                    colIndex,  //标题内容显示的Grid.Column列
                    columnOffset //标题内容显示的Grid.ColumnSpan
                ));
            //存在子级，时添加下线
            if (column.Columns.Count > 0)
            {
                sbStr.AppendLine(String.Format("<Rectangle Fill=\"#FFC9CACA\" VerticalAlignment=\"Stretch\" Height=\"1\" Grid.Row=\"{0}\" Grid.Column=\"{1}\" Grid.RowSpan=\"{2}\" Grid.ColumnSpan=\"{3}\" />", lineRow, colIndex, 1, columnOffset));
            }
            //标题右侧下线
            if (lineColumn < (totalcolumnCount * 2 - 1))
            {
                sbStr.AppendLine(String.Format("<Rectangle Fill=\"#FFC9CACA\" VerticalAlignment=\"Stretch\" Width=\"1\" Visibility=\"Visible\" Grid.Row=\"{0}\" Grid.Column=\"{1}\" Grid.RowSpan=\"{2}\" Grid.ColumnSpan=\"{3}\" />", column.Level * 2, lineColumn, rowOffset, 1));
            }
            //存在子级，先从子级起画
            if (column.Columns.Count > 0)
            {
                foreach (var item in column.Columns)
                {
                    SetContentPresenter(sbStr, item, totalcolumnCount, ref colIndex);
                }
            }
            else
            {
                colIndex += 2; //含分隔线
            }
        }

        /// <summary>
        /// 设置单元格绑定
        /// </summary>
        /// <param name="sbStr"></param>
        /// <param name="column"></param>
        /// <param name="bindingParameter"></param>
        /// <param name="index"></param>
        private static void SetCellBinding(StringBuilder sbStr, ColumnItem column, bool bindingParameter, ref int index)
        {
            if (column.Columns.Count > 0)
            {
                foreach (var item in column.Columns)
                {
                    SetCellBinding(sbStr, item, bindingParameter, ref index);
                }
            }
            else
            {
                if (index > 0)
                {
                    sbStr.AppendLine(String.Format("<Rectangle Fill=\"#FFC9CACA\" VerticalAlignment=\"Stretch\" Grid.Column=\"{0}\"/>", index));
                    index++;
                }
                //构建指定类型的项绑定
                IDataGridDataTemplateFactory templateFactory = ServiceFactory.GetService<IDataGridDataTemplateFactory>();
                IDataGridDataTemplateService templateService = templateFactory.GetService(column.Type);
                sbStr.AppendLine(templateService.CreateCellXaml(column, bindingParameter, index));
                index++;
            }
        }

        /// <summary>
        /// 设置单元格列宽
        /// </summary>
        /// <param name="sbStr"></param>
        /// <param name="column"></param>
        /// <param name="index"></param>
        private static void SetCellColumnDefinition(StringBuilder sbStr, ColumnItem column, ref int index)
        {
            if (column.Columns.Count > 0)
            {
                foreach (var item in column.Columns)
                {
                    SetCellColumnDefinition(sbStr, item, ref index);
                }
            }
            else
            {
                if (index > 0)
                {
                    sbStr.AppendLine("<ColumnDefinition Width=\"1\" />");
                }
                sbStr.AppendLine(String.Format("<ColumnDefinition Width=\"{0}*\"/>", column.Width));
                index++;
            }
        }

        /// <summary>
        /// 创建组列
        /// </summary>
        /// <param name="column">列</param>
        /// <param name="bindingParameter">是否是参数</param>
        /// <returns></returns>
        public static DataGridTemplateColumn CreateTemplateGroupColumn(ColumnItem column, bool bindingParameter)
        {
            var templateColumn = new DataGridTemplateColumn();
            //当前列包含的子级深度
            int LevelDepth = column.ChildLevelDepth();
            //获取当前列子级的总列数
            int totalcolumnCount = column.LastLevelColumnCount();    //
            //设置当前列的宽度
            templateColumn.Width = new DataGridLength(column.TotalGroupWidth() + LevelDepth);
            //构建HeaderStyle以及CellTemplate模板
            //动态构建标题样式 DataGridTemplateColumn.HeaderStyle
            #region 构建多行标题
            var sbHeaderStr = new StringBuilder();
            sbHeaderStr.AppendLine("<Grid.RowDefinitions>");
            for (int i = 0; i <= LevelDepth; i++)
            {
                if (i > 0)
                {
                    sbHeaderStr.AppendLine("<RowDefinition Height=\"1\" />");  //构建分割线，
                }
                if (i < LevelDepth)
                {
                    sbHeaderStr.AppendLine("<RowDefinition Height=\"25\" />");  //内容区域
                }
                else
                {
                    sbHeaderStr.AppendLine("<RowDefinition Height=\"*\" MinHeight=\"25\"/>"); //内容区域
                }
            }
            sbHeaderStr.AppendLine("</Grid.RowDefinitions>");
            sbHeaderStr.AppendLine("<Grid.ColumnDefinitions>");
            int index = 0;
            foreach (var item in column.Columns)
            {
                SetColumnDefinition(sbHeaderStr, item, ref index);
            }
            sbHeaderStr.AppendLine("</Grid.ColumnDefinitions>");

            int columnOffset = totalcolumnCount * 2 - 1;

            sbHeaderStr.AppendLine(CreateDataGridTemplateColumnHeaderContent(String.IsNullOrWhiteSpace(column.ExtendName) ? column.Name : column.ExtendName, -1, -1, -1, columnOffset));

            sbHeaderStr.AppendLine(String.Format("<Rectangle Fill=\"#FFC9CACA\" VerticalAlignment=\"Stretch\" Height=\"1\" Grid.Row=\"1\" Grid.ColumnSpan=\"{0}\" />", columnOffset));

            index = 0;
            foreach (var item in column.Columns)
            {
                SetContentPresenter(sbHeaderStr, item, totalcolumnCount, ref index);
            }
            var headerStyleStr = HeaderStyleString();
            headerStyleStr = headerStyleStr.Replace("{#content#}", sbHeaderStr.ToString());
            templateColumn.HeaderStyle = (Style)XamlReader.Parse(headerStyleStr);
            #endregion
            //动态构建绑定DataTemplate DataGridTemplateColumn.CellTemplate
            #region 构建多行标题数据绑定模板
            var sbCellTempStr = new StringBuilder();
            sbCellTempStr.AppendLine("<Grid.ColumnDefinitions>");
            index = 0;
            foreach (var item in column.Columns)
            {
                SetCellColumnDefinition(sbCellTempStr, item, ref index);
            }
            sbCellTempStr.AppendLine("</Grid.ColumnDefinitions>");
            index = 0;
            foreach (var item in column.Columns)
            {
                SetCellBinding(sbCellTempStr, item, bindingParameter, ref index);
            }
            var cellTemplateStr = CellDataTemplateString();
            cellTemplateStr = cellTemplateStr.Replace("{#content#}", sbCellTempStr.ToString());
            templateColumn.CellTemplate = (DataTemplate)XamlReader.Parse(cellTemplateStr);
            #endregion
            return templateColumn;
        }

        /// <summary>
        /// 动态构建标题模板
        /// </summary>
        /// <param name="sbStr">目标结果</param>
        /// <param name="title">标题名称</param>
        /// <param name="row">所属Grid行Grid.Row</param>
        /// <param name="rowSpan">所属合并行Grid.RowSpan</param>
        /// <param name="column">所属Grid列Grid.Column</param>
        /// <param name="columnSpan">所属合并列Grid.ColumnSpan</param>
        private static String CreateDataGridTemplateColumnHeaderContent(String title, int row, int rowSpan, int column, int columnSpan)
        {
            StringBuilder sbStr = new StringBuilder();
            sbStr.AppendLine("<ContentPresenter VerticalAlignment=\"Center\" HorizontalAlignment=\"Center\"");
            if (row > 0)
            {
                sbStr.AppendFormat(" Grid.Row=\"{0}\"", row);
            }
            if (rowSpan > 0)
            {
                sbStr.AppendFormat(" Grid.RowSpan=\"{0}\"", rowSpan);
            }
            if (column > 0)
            {
                sbStr.AppendFormat(" Grid.Column=\"{0}\"", column);
            }
            if (columnSpan > 0)
            {
                sbStr.AppendFormat(" Grid.ColumnSpan=\"{0}\"", columnSpan);
            }
            sbStr.Append(">");
            sbStr.AppendLine("<ContentPresenter.Content>");
            sbStr.AppendLine(String.Format("<TextBlock Text=\"{0}\" TextAlignment=\"Center\" TextWrapping=\"Wrap\" />", title));
            sbStr.AppendLine("</ContentPresenter.Content>");
            sbStr.AppendLine("</ContentPresenter>");
            return sbStr.ToString();
        }


        /// <summary>
        /// 创建单列
        /// </summary>
        /// <param name="column"></param>
        /// <param name="bindingParameter"></param>
        /// <returns></returns>
        public static DataGridTemplateColumn CreateTemplateSingleColumn(ColumnItem column, bool bindingParameter)
        {
            if (column == null)
            {
                throw new ArgumentNullException("column");
            }
            if (String.IsNullOrWhiteSpace(column.BindingName))
            {
                throw new ArgumentNullException("column.BindingName", "末级列的绑定名称不能为 null 或空白字符串。");
            }
            //创建DataGrid的列
            var templateColumn = new DataGridTemplateColumn();
            //设置列的宽度
            templateColumn.Width = new DataGridLength(column.Width);
            //构建模板字符串
            var sbStr = new StringBuilder();
            //根据模板创建标题
            sbStr.AppendLine(CreateDataGridTemplateColumnHeaderContent(String.IsNullOrWhiteSpace(column.ExtendName) ? column.Name : column.ExtendName, -1, -1, -1, -1));
            //动态构建标题样式 DataGridTemplateColumn.HeaderStyle
            #region DataGridTemplateColumn.HeaderStyle
            var headerStyleStr = HeaderStyleString();
            headerStyleStr = headerStyleStr.Replace("{#content#}", sbStr.ToString());
            templateColumn.HeaderStyle = (Style)XamlReader.Parse(headerStyleStr);
            sbStr.Clear();
            #endregion
            //动态构建绑定DataTemplate DataGridTemplateColumn.CellTemplate
            #region DataGridTemplateColumn.CellTemplate
            //构建绑定模板
            IDataGridDataTemplateFactory templateFactory = ServiceFactory.GetService<IDataGridDataTemplateFactory>();
            IDataGridDataTemplateService templateService = templateFactory.GetService(column.Type);
            sbStr.AppendLine(templateService.CreateCellXaml(column, bindingParameter, null));
            String cellTemplateStr = CellDataTemplateString();
            cellTemplateStr = cellTemplateStr.Replace("{#content#}", sbStr.ToString());
            templateColumn.CellTemplate = (DataTemplate)XamlReader.Parse(cellTemplateStr);
            #endregion
            return templateColumn;
        }

        #region 本地资源模板处理

        private static object lockObj = new object();
        private static String _HeaderStyleString = null;  //
        private static String _CellDataTemplateString = null;//

        /// <summary>
        /// 获取标题样式
        /// </summary>
        /// <returns></returns>
        public static String HeaderStyleString()
        {
            lock (lockObj)
            {
                if (_HeaderStyleString == null)
                {
                    _HeaderStyleString = GetResourceXamlString("HeaderStyle.xaml");
                }
                return _HeaderStyleString;
            }
        }

        /// <summary>
        /// 获取单元格模板字符串
        /// </summary>
        /// <returns></returns>
        public static String CellDataTemplateString()
        {
            lock (lockObj)
            {
                if (_CellDataTemplateString == null)
                {
                    _CellDataTemplateString = GetResourceXamlString("CellDataTemplate.xaml");
                }
                return _CellDataTemplateString;
            }
        }

        /// <summary>
        /// 获取资源Xaml字符串
        /// </summary>
        /// <param name="fileName">文件名称</param>
        /// <returns></returns>
        private static String GetResourceXamlString(String fileName)
        {
            var res = Application.GetResourceStream(new Uri(String.Format("pack://application:,,,/TGP.DataGridDemo;component/Template/{0}", fileName), UriKind.RelativeOrAbsolute));
            using (var sr = new StreamReader(res.Stream))
            {
                return sr.ReadToEnd();
            }
        }

        #endregion
    }