/// <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>
/// 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);
}