如何从datatable中的特定列加载数据

问题描述 投票:0回答:1

我有一个以编程方式创建的数据表(没有使用连接等),在我的数据表中我有2列。我只想将第二列的值导出到excel。对于我下面的代码,它从excel中的两列导出数据。如何编写仅导出特定列?

    private void button2_Click(object sender, EventArgs e)
    {
        using (ExcelPackage pck = new ExcelPackage())
        {
            string filepath = "C:\\Trial.xlsx";
            ExcelWorksheet ws = pck.Workbook.Worksheets.Add("test");
            ws.Cells["A1"].LoadFromDataTable(dt1, false);
            pck.SaveAs(new FileInfo(filepath));
        }
        this.Close();
    }
winforms datatable epplus
1个回答
1
投票

DataTable复制到临时表并删除列,您不需要然后导出到excel。

例:

DataTable tempDataTable;
tempDataTable = table.Copy();
tempDataTable.Columns.Remove("NameOfColumnYouDontWant");

在你的代码中:

private void button2_Click(object sender, EventArgs e)
    {
        using (ExcelPackage pck = new ExcelPackage())
        {
            string filepath = "C:\\Trial.xlsx";
            ExcelWorksheet ws = pck.Workbook.Worksheets.Add("test");
            DataTable tempDataTable;
            tempDataTable = dt1.Copy();
            tempDataTable.Columns.Remove("NameOfColumnYouDontWant");
            # Remove all columns you don't need
            ws.Cells["A1"].LoadFromDataTable(tempDataTable, false);
            pck.SaveAs(new FileInfo(filepath));
        }
        this.Close();
    }
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