Question

我正在关注this posts建议并尝试释放所有COM对象，包括将字符串元组列表写入Excel电子表格（使用他的ComObjectManager类）时的所有范围。

我在下面的解决方案有效，但看起来并没有堆叠

引入的Range COM对象

cells[j, column] = strings[i].Item1;

（等）在ComObjectManager对象中，因此不释放它们。我有一个注释掉的解决方案，可以释放对象，但我不能正确理解设置单元格的语法，因为它不会编译。我也尝试过使用

var roomNameCell = com.Get<object>(() => cells[j, column]);

对于roomNameCell和areaCell，但这导致没有任何内容被写入单元格。

我已经研究过MSDN指南，但无法弄清楚如何做到这一点，请帮助。

internal void InsertStrings(List<Tuple<string, string>> strings, Excel.Range selection, ComObjectManager com)
    {
        const int singleRowCell = 1;
        const int columnsToArea = 2;

        int firstRow = selection.Row;
        int column = selection.Column;

        for (int i = 0, j = firstRow; i < strings.Count; )
        {
            selection = com.Get<Excel.Range>(() => app.Cells[j, column]);

            var mergeArea = com.Get<Excel.Range>(() => selection.MergeArea);
            var mergeAreaRows = com.Get<Excel.Range>(() => mergeArea.Rows);

            var cells = com.Get<Excel.Range>(() => app.Cells);

            if (selection.MergeCells && mergeAreaRows.Count > singleRowCell)
            {
                //var roomNameCell = com.Get<Excel.Range>(() => cells[j, column]);
                //var areaCell = com.Get<Excel.Range>(() => cells[j, column + columnsToArea]);

                //doesn't compile - cannont explicity convert from string to Range
                //roomNameCell = strings[i].Item1;
                //areaCell = strings[i].Item2;

                //works but the Range COM objects aren't being disposed?
                cells[j, column] = strings[i].Item1;
                cells[j, column + columnsToArea] = strings[i].Item2;
                ++i;
            }
            j += mergeAreaRows.Count;
        }
    }

Answer 1

我想通了，我只需要像这样设置Values属性：

internal void InsertStrings(List<Tuple<string, string>> strings, Excel.Range selection, ComObjectManager com)
    {
        const int singleRowCell = 1;
        const int columnsToArea = 2;

        int firstRow = selection.Row;
        int column = selection.Column;

        for (int i = 0, j = firstRow; i < strings.Count; )
        {
            selection = com.Get<Excel.Range>(() => app.Cells[j, column]);

            var mergeArea = com.Get<Excel.Range>(() => selection.MergeArea);
            var mergeAreaRows = com.Get<Excel.Range>(() => mergeArea.Rows);

            var cells = com.Get<Excel.Range>(() => app.Cells);

            if (selection.MergeCells && mergeAreaRows.Count > singleRowCell)
            {
                var roomNameCell = com.Get<Excel.Range>(() => cells[j, column]);
                var areaCell = com.Get<Excel.Range>(() => cells[j, column + columnsToArea]);

                roomNameCell.Value = strings[i].Item1;
                areaCell.Value = strings[i].Item2;

                ++i;
            }
            j += mergeAreaRows.Count;
        }
    }

在释放所有COM对象时写入Excel单元格

1 个答案: