} //End Function
#region protected virtual Cell GetMergeCell(Point GridLocation,string[,] arrStrGrid,int rowHeight,int[] ArrColWidth,int rowSel,int colSel,GridMergeFlag gridMergeFlag)
/// <summary>
/// 任意合并方式下返回指定单元格左顶宽高
/// </summary>
/// <param name="GridLocation">网格起点坐标</param>
/// <param name="arrStrGrid">二维网格</param>
/// <param name="rowHeight">行高</param>
/// <param name="ArrColWidth">列宽数组</param>
/// <param name="rowSel">指定单元格行</param>
/// <param name="colSel">指定单元格列</param>
/// <returns></returns>
protected virtual CellRectangle GetMergeCell(Point GridLocation, string[,] arrStrGrid, int rowHeight,
int[] ArrColWidth, int rowSel, int colSel, GridMergeFlag gridMergeFlag)
{
CellRectangle cell = new CellRectangle(0, 0, 0, 0);
int lngRows = arrStrGrid.GetLength(0); //行数
int lngCols = arrStrGrid.GetLength(1); //列数
int lngMergeRows = 1; //合并的行数（本身为1）
int lngMergeCols = 1; //合并的列数
int lngStartRow = rowSel; //记录与此单元格合并的起始行
int lngEndRow = rowSel; //以便计算高及起点Y坐标
int lngStartCol = colSel; //记录与此单元格合并的起始列
int lngEndCol = colSel; //以便计算宽及起点X坐标
if (gridMergeFlag == GridMergeFlag.Any || gridMergeFlag == GridMergeFlag.Col ||
gridMergeFlag == GridMergeFlag.ColDependOnBeforeGroup)
{
//计算在"列"上进行行合并时起始行与合并的多少
//往上查合并(列不变)
for (int rowIndex = rowSel - 1; rowIndex >= 0; rowIndex--)
{
if (arrStrGrid[rowSel, colSel] == arrStrGrid[rowIndex, colSel])
{
lngMergeRows++;
lngStartRow--;
}
else
{
break;
}
}
//往下查合并(列不变)
for (int rowIndex = rowSel + 1; rowIndex < lngRows; rowIndex++)
{
if (arrStrGrid[rowSel, colSel] == arrStrGrid[rowIndex, colSel])
{
lngMergeRows++;
lngEndRow++;
}
else
{
break;
}
}
}
if (gridMergeFlag == GridMergeFlag.Any || gridMergeFlag == GridMergeFlag.Row)
{
//计算在"行"上进行列合并时起始列与合并的多少
//往左查合并(行不变)
for (int colIndex = colSel - 1; colIndex >= 0; colIndex--)
{
if (arrStrGrid[rowSel, colSel] == arrStrGrid[rowSel, colIndex])
{
lngMergeCols++;
lngStartCol--;
}
else
{
break;
}
}
//往右查合并(行不变)
for (int colIndex = colSel + 1; colIndex < lngCols; colIndex++)
{
if (arrStrGrid[rowSel, colSel] == arrStrGrid[rowSel, colIndex])
{
lngMergeCols++;
lngEndCol++;
}
else
{
break;
}
}
}
//******************计算左顶宽高******************
int cellLeft = GridLocation.X;
int cellTop = GridLocation.Y + lngStartRow*rowHeight; //若行高不是固定行高，可以计算之前行的行高总和
int cellWidth = 0;
int cellHeight = 0;
//单元格合并列的前边的单元格列宽和
for (int i = lngStartCol - 1; i >= 0; i--)
{
cellLeft += ArrColWidth[i];
}
//单元格合并列列宽和
for (int i = lngStartCol; i <= lngEndCol; i++)
{
cellWidth += ArrColWidth[i];
}
cellHeight = lngMergeRows*rowHeight; //若行高不是固定行高，可以计算所有行的行高总和
cell = new CellRectangle(cellLeft, cellTop, cellWidth, cellHeight);
return cell;
}
} //End Function
#endregion
protected void DrawGridText(Graphics g, Rectangle p_rec, Brush p_brush, string[,] arrStrGrid, int p_rowHeight,
int[] p_arrColsWidth, string alignment, Font p_font, PointF p_scaleXY, GridMergeFlag gridMergeFlag)
{
if (gridMergeFlag == GridMergeFlag.None)
{
DrawGridText(g, p_rec, p_brush, arrStrGrid, p_rowHeight, p_arrColsWidth, alignment, p_font, p_scaleXY);
return;
}
try
{
//缩放矩阵，用于绘图
Rectangle rec = new Rectangle(p_rec.X, p_rec.Y, p_rec.Width, p_rec.Height);
Font font = p_font;
if (font == null)
{
font = new Font("宋体", 12.0F);
}
int lngRows = arrStrGrid.GetLength(0); //行数
int lngCols = arrStrGrid.GetLength(1); //列数
//列宽
int[] mArrColWidth = new int[lngCols];
mArrColWidth = p_arrColsWidth;
//列对齐方式
AlignFlag[] arrAlign;
arrAlign = this.GetColsAlign(alignment);
//变换
this.TransGrid(g, rec, p_scaleXY);
#region 画单元格文本
StringFormat sf = new StringFormat(); //字符格式
sf.LineAlignment = StringAlignment.Center; //垂直居中
sf.FormatFlags = StringFormatFlags.LineLimit; //| StringFormatFlags.NoWrap; //可换行否
CellRectangle cell = new CellRectangle(rec.X, rec.Y, 0, p_rowHeight); //单元格
for (int i = 0; i < lngRows; i++)
{
for (int j = 0; j < lngCols; j++)
{
//.....
cell = this.GetMergeCell(new Point(rec.X, rec.Y), arrStrGrid, p_rowHeight, mArrColWidth, i, j,
gridMergeFlag);
Rectangle recCell = new Rectangle(cell.Left, cell.Top, cell.Width, cell.Height + 4);
//实际上居中会稍微偏上，因为字体有预留边距
sf.Alignment = StringAlignment.Near; //默认左对齐
if (arrAlign.Length > j)
{
if (arrAlign[j] == AlignFlag.Center)
{
sf.Alignment = StringAlignment.Center; //居中
}
else if (arrAlign[j] == AlignFlag.Right)
{
sf.Alignment = StringAlignment.Far; //居右
}
}
g.DrawString(arrStrGrid[i, j], font, p_brush, recCell, sf);
} //End For 列
} //End For 行
#endregion
//重置，不再变换
this.ResetTransGrid();
//font.Dispose();
}
catch (Exception e)
{
System.Windows.Forms.MessageBox.Show(e.Message);
}
finally
{
}
} //End Function