Question

我想在将dataTable导出到excel

时添加超链接

但是excel不能显示超链接属性，只能显示字符串。

dataTable输入字段是否有任何限制？

下面是我格式化DATATABLE的代码

       int dt_current_row = 0;
        string[] Days = testDays.ToArray();

        for (int i = 0; i < tableOriginal.Rows.Count; i++)
        {
            string wo_number = handle(tableOriginal.Rows[i]["WO_NUMBER"].ToString());
            string date = handle(tableOriginal.Rows[i]["CREATE_DATE"].ToString());

            if (i == 0)
            {

                // Insert New
                DataRow dr = dt.NewRow();
                dt.Rows.Add(dr);
                dr["WO_NUMBER"] = wo_number;

                for (int x = 1; x < dt.Columns.Count; x++)
                {
                    int z = Convert.ToInt32(Math.Floor(0.5 * (x - 1)));
                    //search Date
                    if (tableOriginal.Rows[i]["CREATE_DATE"].ToString() == Days[z])
                    {
                        //if equal , insert num and ID 
                        object xx = tableOriginal.Rows[i]["NUM"];
                        int num = Convert.ToInt32(xx);
                        dr["PHOTO_" + z.ToString()] = num;

                        object yy = tableOriginal.Rows[i]["PHOTO_ID"];
                        string photo = Convert.ToString(yy);
                        dr["ID_" + z.ToString()] = HttpContext.Current.Server.HtmlEncode(httpLink + photo);

                        break;
                    }
                }
            }

....以及将DataTable中的单元格导出到excel文档xls中的单元格的部分我试图设置公式，但它不起作用

foreach (DataRow r in result.Rows)
    {
        currentCol = 1;
        foreach (DataColumn c in result.Columns)
        {
            string temp = c.ColumnName.ToString().Substring(0,2);
            if (temp.Equals("ID")) 
            {
                httpLinkForPhoto = r[currentCol - 1].ToString();
                if (!httpLinkForPhoto.Equals(null))
                {
                    string formula = "=HYPERLINK(" + httpLinkForPhoto + "," + httpLinkForPhoto + ")";
                    excelDoc2.SetFormula(1, 1, currentRow, currentCol, currentRow, currentCol, formula);
                }
            }
            else
            { 
                excelDoc2.setCell(1, 1, currentRow, currentCol, r[currentCol - 1].ToString()); 
            }            
            currentCol++;
        }
        currentRow++;
    }

Answer 1

.net DataTable 只能包含 .net Types 。因此，无法在dataTable中添加“超链接”。但当然您可以添加指向excel Cell的超链接。有关向Excel添加超链接的详细信息，请参阅this question或MSDN。根据您的代码，这可能看起来像

// common syntax to  add a Hyperlink to Excel
object Add(
[In] object Anchor, 
[In] string Address, 
[In, Optional] object SubAddress, 
[In, Optional] object ScreenTip, 
[In, Optional] object TextToDisplay
);

// your code
for (int rowIndex=0; rowIndex<result.Rows.Count; rowIndex++)
{
    for (int columnIndex=0; columnIndex<result.Columns.Count; columnIndex++)
    {
        string yourValue = result.Rows[rowIndex].Item[columnIndex].ToString();
        if (columnIndex!=YOUR_HYPERLINK_COLUMN_INDEX)
            excelDoc2.setCell(1, 1, rowIndex, columnIndex, yourValue);      
        else
        {
             Excel.Range range = (Range) YOUR_SHEET.Cells[rowIndex, columnIndex];

             CURRENT_WORKSHEET.Hyperlinks.Add(
                           range, 
                           yourValue, 
                           Type.Missing,"YOUR_SCREEN_TIP",
                           "YOUR_TEXT_TO_DISPLAY");
        } 
    }
}

Answer 2

Excel中有一个功能。语法是

=HYPERLINK(url;friendlyname)

只需确保单元格中的文字看起来像这样，url和friendlyname当然是占位符，您应该用它们替换您要显示的URL和文本。

在DataTable C＃中插入超链接

2 个答案: